+++ /dev/null
-20xx-xx-xx - PgBouncer 1.7 - ""
-
- = Features =
-
- * SSL connection, auth via client cert.
-
- * HBA-style access control file.
-
- * Unix sockets support "peer" auth.
-
-2015-08-01 - PgBouncer 1.6 - "Zombies of the future"
-
- = Features =
-
- * Load user password hash from postgres database.
- New parameters:
- auth_user - user to use for connecting same db and fetching user info.
- Can be set per-database too.
- auth_query - SQL query to run under auth_user.
- Default: "SELECT usename, passwd FROM pg_shadow WHERE usename=$1"
-
- (Cody Cutrer)
-
- * Pooling mode can be configured both per-database and per-user.
- (Cody Cutrer)
-
- * Per-database and per-user connection limits: max_db_connections and
- max_user_connections.
- (Cody Cutrer / Pavel Stehule)
-
- * Add DISABLE/ENABLE commands to prevent new connections.
- (William Grant)
-
- * New DNS backend: c-ares. Only DNS backend that supports all
- interesting features: /etc/hosts with refresh, SOA lookup,
- large replies (via TCP/EDNS+UDP), IPv6. It is the preferred
- backend now, and probably will be *only* backend in the future,
- as it's pointless to support zoo of inadequate libraries.
-
- SNAFU: c-ares versions <= 1.10 have bug which breaks CNAME-s support
- when IPv6 has been enabled. (Fixed upstream.) As a workaround,
- c-ares <= 1.10 is used IPv4-only. So PgBouncer will drop other backends
- only when c-ares >1.10 (still unreleased) has been out some time...
-
- * Show remote_pid in SHOW CLIENTS/SERVERS. Available for clients that
- connect over unix sockets and both tcp and unix socket server.
- In case of tcp-server, the pid is taken from cancel key.
-
- * Add separate config param (dns_nxdomain_ttl) for controlling
- negative dns caching.
- (Cody Cutrer)
-
- * Add the client host IP address and port to application_name.
- This is enabled by a config parameter application_name_add_host
- which defaults to 'off'.
- (Andrew Dunstan)
-
- * Config files have '%include FILENAME' directive to allow configuration
- to be split into several files.
- (Andrew Dunstan)
-
- = Cleanups =
-
- * log: wrap ipv6 address with []
-
- * log: On connect to server, show local ip and port
-
- * win32: use gnu-style for long args: --foo
-
- * Allow numbers in hostname, always try to parse with inet_pton
-
- * Fix deallocate_all() in FAQ
-
- * Fix incorrect keyword in example config file
- (Magnus Hagander)
-
- * Allow comments (with ';') in auth files.
- (Guillaume Aubert)
-
- * Fix spelling mistakes in log messages and comments.
- (Dmitriy Olshevskiy)
-
- = Fixes =
-
- * fix launching new connections during maintenance
- (Cody Cutrer)
-
- * don't load auth file twice at boot
- (Cody Cutrer)
-
- * Proper invalidation for autodbs
-
- * ipv6: Set IPV6_V6ONLY on listen socket.
-
- * win32: Don't set SO_REUSEADDR on listen socket.
-
- * Fix IPv6 address memcpy
-
- * Fix cancellation of of waiting clients.
- (Mathieu Fenniak)
-
- * Small bug fix, must check calloc result
- (Heikki Linnakangas)
-
- * Add newline at the end of the PID file
- (Peter Eisentraut)
-
- * Don't allow new server connections when PAUSE <db> was issued.
- (Petr Jelinek)
-
- * Fix 'bad packet' during login when header is delayed.
- (Michał Trojnara, Marko Kreen)
-
- * Fix errors detected by Coverty.
- (Euler Taveira)
-
- * Disable server_idle_timeout when server count gets below min_pool (#60)
- (Marko Kreen)
-
-
-2012-11-28 - PgBouncer 1.5.4 - "No Leaks, Potty-Training Successful"
-
- = Fixes =
-
- * DNS: Fix memory leak in getaddrinfo_a() backend.
-
- * DNS: Fix memory leak in udns backend.
-
- * DNS: Fix stats calculation.
-
- * DNS: Improve error message handling for getaddrinfo_a().
-
- * Fix win32 compile.
-
- * Fix compiler dependency support check in configure.
-
- * Few documentation fixes.
-
-2012-09-12 - PgBouncer 1.5.3 - "Quantum Toaster"
-
- = Critical fix =
-
- * Too long database names can lead to crash, which
- is remotely triggerable if autodbs are enabled.
-
- The original checks assumed all names come from config files,
- thus using fatal() was fine, but when autodbs are enabled
- - by '*' in [databases] section - the database name can come
- from network thus making remote shutdown possible.
-
- = Minor Features =
-
- * max_packet_size - config parameter to tune maximum packet size
- that is allowed through. Default is kept same: (2G-1), but now
- it can be made smaller.
-
- * In case of unparseable packet header, show it in hex in log and
- error message.
-
- = Fixes =
-
- * AntiMake: it used $(relpath) and $(abspath) to manupulate pathnames,
- but the result was build failure when source tree path contained
- symlinks. The code is now changed to work on plain strings only.
-
- * console: now SET can be used to set empty string values.
-
- * config.txt: show that all timeouts can be set in floats.
- This is well-hidden feature introduced in 1.4.
-
-2012-05-29 - PgBouncer 1.5.2 - "Don't Chew, Just Swallow"
-
- = Fixes =
-
- * Due to mistake, reserve_pool_timeout was taken in microseconds,
- not seconds, effectively activating reserve pool immediately
- when pool got full. Now use it as seconds, as was intended.
- (Noticed by Keyur Govande)
-
-2012-04-17 - PgBouncer 1.5.1 - "Abort, Retry, Ignore?"
-
- = Features =
-
- * Parameters to tune permissions on unix socket:
- unix_socket_mode=0777, unix_socket_group=''.
-
- = Fixes =
-
- * Allow empty string for server-side variable - this is
- needed to get "application_name" properly working, as it's
- the only parameter that does not have server-side default.
-
- * If connect string changes, require refresh of server parameters.
- Previously PgBouncer continued with old parameters,
- which breaks in case of Postgres upgrade.
-
- * If autodb connect string changes, drop old connections.
-
- * cf_setint: Use strtol() instead atoi() to parse integer config
- parameters. It allows hex, octal and better error detection.
-
- * Use sigqueue() to detect union sigval existence - fixes
- compilation on HPUX.
-
- * Remove 'git' command from Makefile, it throws random errors
- in case of plain-tarball build.
-
- * Document stats_period parameter. This tunes the period for
- stats output.
-
- * Require Asciidoc >= 8.4, seems docs are not compatible with
- earlier versions anymore.
-
- * Stop trying to retry on EINTR from close().
-
-2012-01-05 - PgBouncer 1.5 - "Bouncing Satisified Clients Since 2007"
-
- If you use more than 8 IPs behind one DNS name, you now need to
- use EDNS0 protocol to query. Only getaddrinfo_a()/getaddrinfo()
- and UDNS backends support it, libevent 1.x/2.x does not.
- To enable it for libc, add 'options edns0' to /etc/resolv.conf.
-
- GNU Make 3.81+ is required for building.
-
- = Features =
-
- * Detect DNS reply changes and invalidate connections to IPs no longer
- present in latest reply.
- (Petr Jelinek)
-
- * DNS zone serial based hostname invalidation. When option
- dns_zone_check_period is set, all DNS zones will be queried
- for SOA, and when serial has changed, all hostnames
- will be queried. This is needed to get deterministic
- connection invalidation, because invalidation on lookup
- is useless when no lookups are performed.
- Works only with new UDNS backend.
-
- * New SHOW DNS_HOSTS, SHOW DNS_ZONES commands to examine DNS cache.
-
- * New param: min_pool_size - avoids dropping all connections
- when there is no load.
- (Filip Rembiałkowski)
-
- * idle_in_transaction_timeout - kill transaction if idle too long.
- Not set by default.
-
- * New libudns backend for DNS lookups. More featureful than evdns.
- Use --with-udns to activate. Does not work with IPv6 yet.
-
- * KILL command, to immediately kill all connections for one database.
- (Michael Tharp)
-
- * Move to Antimake build system to have better looking Makefiles.
- Now GNU Make 3.81+ is required for building.
-
- = Fixes =
-
- * DNS now works with IPv6 hostnames.
-
- * Don't change connection state when NOTIFY arrives from server.
-
- * Various documentation fixes.
- (Dan McGee)
-
- * Console: Support ident quoting with "". Originally we did not
- have any commands that took database names, so no quoting was needed.
-
- * Console: allow numbers at the stard of word regex. Trying
- to use strict parser makes things too complex here.
-
- * Don't expire auto DBs that are paused.
- (Michael Tharp)
-
- * Create auto databases as needed when doing PAUSE.
- (Michael Tharp)
-
- * Fix wrong log message issued by RESUME command.
- (Peter Eisentraut)
-
- * When user= without password= is in database connect string,
- password will be taken from userlist.
-
- * Parse '*' properly in takeover code.
-
- * autogen.sh: work with older autoconf/automake.
-
- * Fix run-as-service crash on win32 due to bad basename() from
- mingw/msvc runtime. Now compat basename() is always used.
-
-2011-06-16 - PgBouncer 1.4.2 - "Strike-First Algorithm"
-
- Affected OS-es: *BSD, Solaris, Win32.
-
- = Portability Fixes =
-
- * Give CFLAGS to linker. Needed when using pthread-based
- getaddrinfo_a() fallback.
-
- * lib/find_modules.sh: Replace split() with index()+substr().
- This should make it work with older AWKs.
-
- * <usual/endian.h>: Ignore system htoX/Xtoh defines. There
- may be only subset of macros defined.
-
- * <usual/signal.h>: Separate compat sigval from compat sigevent
-
- * <usual/socket.h>: Include <sys/uio.h> to get iovec
-
- * <usual/time.h>: Better function autodetection on win32
-
- * <usual/base_win32.h>: Remove duplicate sigval/sigevent declaration
-
-2011-04-01 - PgBouncer 1.4.1 - "It Was All An Act"
-
- = Features =
-
- * Support listening/connect for IPv6 addresses.
- (Hannu Krosing)
-
- * Multiple listen addresses in 'listen_addr'. For each getaddrinfo()
- is called, so names can also be used.
-
- * console: Send PgBouncer version as 'server_version' to client.
-
- = Important Fixes =
-
- * Disable getaddrinfo_a() on glibc < 2.9 as it crashes on older versions.
-
- Notable affected OS'es: RHEL/CentOS 5.x (glibc 2.5), Ubuntu 8.04 (glibc 2.7).
- Also Debian/lenny (glibc 2.7) which has non-crashing getaddrinfo_a()
- but we have no good way to detect it.
-
- Please use libevent 2.x on such OS'es, fallback getaddrinfo_a() is not
- meant for production systems. And read new 'DNS lookup support' section
- in README to see how DNS backend is picked.
-
- (Hubert Depesz Lubaczewski, Dominique Hermsdorff, David Sommerseth)
-
- * Default to --enable-evdns if libevent 2.x is used.
-
- * Turn on tcp_keepalive by default, as that's what Postgres also does.
- (Hubert Depesz Lubaczewski)
-
- * Set default server_reset_query to DISCARD ALL to be compatible
- with Postgres by default.
-
- * win32: Fix crashes with NULL unix socket addr.
- (Hiroshi Saito)
-
- * Fix autodb cleanup: old cleanup code was mixing up databases and pools
- - as soon as one empty pool was found, the database was tagged as 'idle',
- potentially later killing database with active users.
-
- Reported-By: Hubert Depesz Lubaczewski
-
- = Fixes =
-
- * Make compat getaddrinfo_a() non-blocking, by using single parallel
- thread to do lookups.
-
- * Enable pthread compilation if compat getaddrinfo_a is used.
-
- * release_server missed setting ->last_lifetime_disconnect on lifetime disconnect.
- (Emmanuel Courreges)
-
- * win32: fix auth file on DOS line endings - load_file() did not take
- account of file shringage when loading.
- (Rich Schaaf)
-
- * <usual/endian.h>: add autoconf detection for enc/dec functions
- so it would not create conflicts on BSD.
- (James Pye)
-
- * Don't crash when config file does not exist.
- (Lou Picciano)
-
- * Don't crash on DNS lookup failure when logging on noise level (-v -v).
- (Hubert Depesz Lubaczewski, Dominique Hermsdorff)
-
- * Use backticks instead of $(cmd) in find_modules.sh to make it more portable.
- (Lou Picciano)
-
- * Use 'awk' instead of 'sed' in find_modules.sh to make it more portable.
- (Giorgio Valoti)
-
- * Log active async DNS backend info on startup.
-
- * Fix --disable-evdns to mean 'no' instead 'yes'.
-
- * Mention in docs that -R requires unix_socket_dir.
-
- * Discuss server_reset_query in faq.txt.
-
- * Restore lost memset in slab allocator
-
- * Various minor portability fixes in libusual.
-
-2011-01-11 - PgBouncer 1.4 - "Gore Code"
-
- = Features =
-
- * Async DNS lookup - instead of resolving hostnames at reload time,
- the names are now resolved at connect time, with configurable caching.
- (See dns_max_ttl parameter.)
-
- By default it uses getaddrinfo_a() (glibc) as backend, if it does not
- exist, then getaddrinfo_a() is emulated via blocking(!) getaddrinfo().
-
- When --enable-evdns argument to configure, libevent's evdns is used
- as backend. It is not used by default, because libevent 1.3/1.4
- contain buggy implementation. Only evdns in libevent 2.0 seems OK.
-
- * New config var: syslog_ident, to tune syslog name.
-
- * Proper support for `application_name` startup parameter.
-
- * Command line long options (Guillaume Lelarge)
-
- * Solaris portability fixes (Hubert Depesz Lubaczewski)
-
- * New config var: disable_pqexec. Highly-paranoid environments
- can disable Simple Query Protocol with that. Requires apps
- that use only Extended Query Protocol.
-
- * Postgres compat: if database name is empty in startup packet,
- use user name as database.
-
- = Fixes =
-
- * DateStyle and TimeZone server params need to use exact case.
-
- * Console: send datetime, timezone and stdstr server params to client.
-
- = Internal cleanups =
-
- * Use libusual library for low-level utility functions.
-
- * Remove fixed-length limit from server params.
-
-2010-09-09 - PgBouncer 1.3.4 - "Bouncer is always right"
-
- = Fixes =
-
- * Apply fast-fail logic at connect time. So if server is failing,
- the clients get error when connecting.
-
- * Don't tag automatically generated databases for checking on reload time,
- otherwise they get killed, because they don't exist in config.
-
- * Ignore application_name parameter by default. This avoids the need
- for all Postgres 9.0 users to add it into ignore_startup_parameters=
- themselves.
-
- * Correct pg_auth quoting. '\' is not used there.
-
- * Better error reporting on console, show incoming query to user.
-
- * Support OS'es (OpenBSD) where tv_sec is not time_t.
-
- * Avoid too noisy warnings on gcc 4.5.
-
-2010-05-10 - PgBouncer 1.3.3 - "NSFW"
-
- = Improvements =
-
- * Make listen(2) argument configurable: listen_backlog. This is
- useful on OS'es, where system max allowed is configurable.
-
- * Improve disconnect messages to show what username or dbname caused
- login to fail.
-
- = Fixes =
-
- * Move fast-fail relaunch logic around. Old one was annoying in case of
- permanently broken databases or users, by trying to retry even if
- there is no clients who want to login.
-
- * Make logging functions keep old errno, otherwise pgbouncer may act funny
- on higher loglevels and logging problems.
-
- * Increase the size of various startup-related buffers to handle
- EDB more noisy startup.
-
- * Detect V2 protocol startup request and give clear reason for disconnect.
-
-2010-03-15 - PgBouncer 1.3.2 - "Boomerang Bullet"
-
- = Fixes =
-
- * New config var 'query_wait_timeout'. If client does not get
- server connection in this many seconds, it will be killed.
-
- * If no server connection in pool and last connect failed, then
- don't put client connections on hold but send error immediately.
-
- This together with previous fix avoids unnecessary stalls if
- a database has gone down.
-
- * Track libevent state in sbuf.c to avoid double event_del(). Although
- it usually is safe, it does not seem to work 100%. Now we should always
- know whether it has been called or not.
-
- * Disable maintenance during SUSPEND. Otherwise with short timeouts
- the old bouncer could close few connections after sending them over.
-
- * Apply client_login_timeout to clients waiting for welcome packet
- (first server connection). Otherwise they can stay waiting
- infinitely, unless there is query_timeout set.
-
- * win32: Add switch -U/-P to -regservice to let user pick account
- to run service under. Old automatic choice between Local Service and
- Local System was not reliable enough.
-
- * console: Remove \0 from end of text columns. It was hard to notice,
- as C clients were fine with it.
-
- * Documentation improvements. (Greg Sabino Mullane)
-
- * Clarify few login-related log messages.
-
- * Change logging level for pooler-sent errors (usually on disconnect) from INFO
- to WARNING, as they signify problems.
-
- * Change log message for query_timeout to "query timeout".
-
-2009-07-06 - PgBouncer 1.3.1 - "Now fully conforming to NSA monitoring requirements"
-
- = Fixes =
-
- * Fix problem with sbuf_loopcnt which could make connections hang.
- If query or result length is nearby of multiple of (pktlen*sbuf_loopcnt)
- [10k by default], it could stay waiting for more data which will not
- appear.
-
- * Make database reconfigure immediate. Currently old connections
- could be reused after SIGHUP.
-
- * Fix SHOW DATABASES which was broken due to column addition.
-
- * Console access was disabled when "auth_mode=any" as pgbouncer dropped username.
- Fix: if "auth_mode=any", allow any user to console as admin.
-
- * Fix bad CUSTOM_ALIGN macro. Luckily it's unused if OS already
- defines ALIGN macro thus seems the bug has not happened in wild.
-
- * win32: call WSAStartup() always, not only in daemon mode
- as config parsing wants to resolve hosts.
-
- * win32: put quotes around config filename in service
- cmdline to allow spaces in paths. Executable path
- does not seem to need it due to some win32 magic.
-
- * Add STATS to SHOW HELP text.
-
- * doc/usage.txt: the time units in console results are in
- microseconds, not milliseconds.
-
-2009-02-18 - PgBouncer 1.3 - "New Ki-Smash Finishing Move"
-
- = Features =
-
- * IANA has assigned port 6432 to be official port for PgBouncer.
- Thus the default port number has changed to 6432. Existing
- individual users do not need to change, but if you distribute
- packages of PgBouncer, please change the package default
- to official port.
-
- * Dynamic database creation (David Galoyan)
-
- Now you can define database with name "*". If defined, it's connect
- string will be used for all undefined databases. Useful mostly
- for test / dev environments.
-
- * Windows support (Hiroshi Saito)
-
- PgBouncer runs on Windows 2000+ now. Command line usage stays same,
- except it cannot run as daemon and cannot do online reboot.
- To run as service, define parameter service_name in config. Then:
-
- > pgbouncer.exe config.ini -regservice
- > net start SERVICE_NAME
-
- To stop and unregister:
-
- > net stop SERVICE_NAME
- > pgbouncer.exe config.ini -unregservice
-
- To use Windows Event Log, event DLL needs to be registered first:
-
- > regsrv32 pgbevent.dll
-
- Afterwards you can set "syslog = 1" in config.
-
- = Minor features =
-
- * Database names in config file can now be quoted with standard SQL
- ident quoting, to allow non-standard characters in db names.
-
- * New tunables: 'reserve_pool_size' and 'reserve_pool_timeout'.
- In case there are clients in pool that have waited more that
- 'reserve_pool_timeout' seconds, 'reserve_pool_size' specifies
- the number of connections that can be added to pool. It can also
- set per-pool with 'reserve_pool' connection variable.
-
- * New tunable 'sbuf_loopcnt' to limit time spent on one socket.
-
- In some situations - eg SMP server, local Postgres and fast network -
- pgbouncer can run recv()->send() loop many times without blocking
- on either side. But that means other connections will stall for
- a long time. To make processing more fair, limit the times
- of doing recv()->send() one socket. If count reaches limit,
- just proceed processing other sockets. The processing for
- that socket will resume on next event loop.
-
- Thanks to Alexander Schöcke for report and testing.
-
- * crypt() authentication is now optional, as it was removed from Postgres.
- If OS does not provide it, pgbouncer works fine without it.
-
- * Add milliseconds to log timestamps.
-
- * Replace old MD5 implementation with more compact one.
-
- * Update ISC licence with the FSF clarification.
-
- = Fixes =
-
- * In case event_del() reports failure, just proceed with cleanup.
- Previously pgbouncer retried it, in case the failure was due ENOMEM.
- But this has caused log floods with inifinite repeats, so it seems
- libevent does not like it.
-
- Why event_del() report failure first time is still mystery.
-
- * --enable-debug now just toggles whether debug info is stripped from binary.
- It no longer plays with -fomit-frame-pointer as it's dangerous.
-
- * Fix include order, as otherwise system includes could come before
- internal ones. Was problem for new md5.h include file.
-
- * Include COPYRIGHT file in .tgz...
-
-2008-08-08 - PgBouncer 1.2.3 - "Carefully Selected Bytes"
-
- * Disable SO_ACCEPTFILTER code for BSDs which did not work.
- * Include example etc/userlist.txt in tgz.
- * Use '$(MAKE)' instead 'make' for recursion (Jørgen Austvik)
- * Define _GNU_SOURCE as glibc is useless otherwise.
- * Let the libevent 1.1 pass link test so we can later report "1.3b+ needed"
- * Detect stale pidfile and remove it.
-
- Thanks to Devrim GÜNDÜZ and Bjoern Metzdorf for problem reports and testing.
-
-2008-08-06 - PgBouncer 1.2.2 - "Barf-bag Included"
-
- * Remove 'drop_on_error', it was a bad idea. It was added as workaround
- for broken plan cache behaviour in Postgres, but can cause damage
- in common case when some queries always return error.
-
-2008-08-04 - PgBouncer 1.2.1 - "Waterproof"
-
- = Features =
-
- * New parameter 'drop_on_error' - if server throws error the connection
- will not be reused but dropped after client finished with it. This is
- needed to refresh plan cache. Automatic refresh does not work even in 8.3.
- Defaults to 1.
-
- = Fixes =
-
- * SHOW SOCKETS/CLIENTS/SERVERS: Don't crash if socket has no buffer.
- * Fix infinite loop on SUSPEND if suspend_timeout triggers.
-
- = Minor cleanups =
-
- * Use <sys/uio.h> for 'struct iovec'.
- * Cancel shutdown (from SIGINT) on RESUME/SIGUSR2,
- otherwise it will trigger on next PAUSE.
- * Proper log message if console operation is canceled.
-
-2008-07-29 - PgBouncer 1.2 - "Ordinary Magic Flute"
-
- PgBouncer 1.2 now requires libevent version 1.3b or newer.
- Older libevent versions crash with new restart code.
-
- = Features =
-
- * Command line option (-u) and config parameter (user=) to support user
- switching at startup. Also now pgbouncer refuses to run as root.
- (Jacob Coby)
- * More descriptive usage text (-h). (Jacob Coby)
- * New database option: connect_query to allow run a query on new
- connections before they are taken into use. (Teodor Sigaev)
- * New config var 'ignore_startup_parameters' to allow and ignore
- extra parameters in startup packet. By default only 'database'
- and 'user' are allowed, all others raise error. This is needed
- to tolerate overenthusiastic JDBC wanting to unconditionally
- set 'extra_float_digits=2' in startup packet.
- * Logging to syslog: new parameters syslog=0/1 and
- syslog_facility=daemon/user/local0.
- * Less scary online restart (-R)
- - Move FD loading before fork, so it logs to console and can be canceled by ^C
- - Keep SHUTDOWN after fork, so ^C would be safe
- - A connect() is attempted to unix socket to see if anyone is listening.
- Now -R can be used even when no previous process was running. If there
- is previous process, but -R is not used, startup fails.
- * New console commands:
- - SHOW TOTALS that shows stats summary (as goes to log) plus mem usage.
- - SHOW ACTIVE_SOCKETS - like show sockets; but filter only active ones.
-
- = Less visible features =
-
- * suspend_timeout - drop stalled conns and long logins. This brings
- additional safety to reboot.
- * When remote database throws error on logging in, notify clients.
- * Removing a database from config and reloading works - all connections
- are killed and the database is removed.
- * Fake some parameters on console SHOW/SET commands to be more Postgres-like.
- That was needed to allow psycopg to connect to console.
- (client_encoding/default_transaction_isolation/datestyle/timezone)
- * Make server_lifetime=0 disconnect server connection immediately
- after first use. Previously "0" made PgBouncer ignore server age.
- As this behavior was undocumented, there should not be any users
- depending on it.
- * Internal improvements:
- - Packet buffers are allocated lazily and reused. This should bring
- huge decrease in memory usage. This also makes realistic to use
- big pktbuf with lot of connections.
- - Lot's of error handling improvements, PgBouncer should now
- survive OOM situations gracefully.
- - Use slab allocator for memory management.
- - Lots of code cleanups.
-
- = Fixes =
-
- * Only single accept() was issued per event loop which could
- cause connection backlog when having high amount of connection
- attempts. Now the listening socket is always drained fully,
- which should fix this.
- * Handle EINTR from connect().
- * Make configure.ac compatible with autoconf 2.59.
- * Solaris compatibility fixes (Magne Mæhre)
-
-2007-12-10 - PgBouncer 1.1.2 - "The Hammer"
-
- = Features =
-
- * Disconnects because of server_lifetime are now separated by
- (server_lifetime / pool_size) seconds. This avoids pgbouncer
- causing reconnect floods.
-
- = Fixes =
-
- * Online upgrade 1.0 -> 1.1 problems:
- - 1.0 does not track server parameters, so they stay NULL
- but 1.1 did not expect it and crashed.
- - If server params are unknown, but client ones are set,
- then issue a SET for them, instead complaining.
- * Remove temp debug statements that were accidentally left
- in code on INFO level, so they polluted logs.
- * Unbroke debian/changelog
-
- = Cleanup =
-
- * reorder struct SBuf fields to get better alignment for buffer.
-
-2007-10-26 - PgBouncer 1.1.1 - "Breakdancing Bee"
-
- = Fixes =
-
- * Server parameter cache could stay uninitialized, which caused
- unnecessary SET of them. This caused problem on 8.1 which
- does not allow touching standard_conforming_strings.
- (Thanks to Dimitri Fontaine for report & testing.)
-
- * Some doc fixes.
- * Include doc/fixman.py in .tgz.
-
-2007-10-09 - PgBouncer 1.1 - "Mad-Hat Toolbox"
-
- = Features =
-
- * Keep track of following server parameters:
-
- client_encoding datestyle, timezone, standard_conforming_strings
-
- * Database connect string enhancements:
- - Accept hostname in host=
- - Accept custom unix socket location in host=
- - Accept quoted values: password=' asd''foo'
-
- * New config var: server_reset_query, to be sent immidiately after release
- * New config var: server_round_robin, to switch between LIFO and RR.
- * Cancel pkt sent for idle connection does not drop it anymore.
- * Cancel with ^C from psql works for SUSPEND / PAUSE.
- * Print FD limits on startup.
- * When suspending, try to hit packet boundary ASAP.
- * Add 'timezone' to database parameters.
- * Use longlived logfile fd. Reopened on SIGHUP / RELOAD;
- * Local connection endpoint info in SHOW SERVERS/CLIENTS/SOCKETS.
-
- = Code cleanup =
-
- * More debug log messages include socket info.
- * Magic number removal and error message cleanup. (David Fetter)
- * Wrapper struct for current pkt info. Removes lot of compexity.
-
- = Fixes =
-
- * Detect invalid pkt headers better.
- * auth_file modification check was broken, which made pgbouncer
- reload it too often.
-
-2007-06-18 - PgBouncer 1.0.8 - "Undead Shovel Jutsu"
-
- = Fixes =
-
- * Fix crash in cancel packet handling. (^C from psql)
-
- = Features =
-
- * PAUSE <db>; RESUME <db>; works now.
- * Cleanup of console command parsing.
- * Disable expensive in-list assert check.
-
-2007-04-19 - PgBouncer 1.0.7 - "With Vitamin A-Z"
-
- * Several error/notice packets with send() blocking between
- triggered assert. Fix it by removing flushing logic altogether.
- As pgbouncer does not actively buffer anything, its not needed.
- It was a remnant from the time when buffering was pushed to
- kernel with MSG_MORE.
- * Additionally avoid calling recv() logic when sending unblocks.
- * List search code for admin_users and stats_users
- mishandled partial finds. Fix it.
- * Standardise UNIX socket peer UID finding to getpeereid().
-
-2007-04-12 - PgBouncer 1.0.6 - "Daily Dose"
-
- * The "Disable maintenance during the takeover" fix could
- disable maintenance altogether. Fix it.
- * Compilation fix for FreeBSD, <sys/ucred.h> requires <sys/param.h> there.
- Thanks go to Robert Gogolok for report.
-
-2007-04-11 - PgBouncer 1.0.5 - "Enough for today"
-
- * Fix online-restart bugs:
- - Set ->ready for idle servers.
- - Remove obsolete code from use_client_socket()
- - Disable maintenance during the takeover.
-
-2007-04-11 - PgBouncer 1.0.4 - "Last 'last' bug"
-
- * Notice from idle server tagged server dirty.
- release_server() did not expect it. Fix it
- by dropping them.
-
-2007-04-11 - PgBouncer 1.0.3 - "Fearless Fork"
-
- = Fixes =
-
- * Some error handling was missing in login path, so dying
- connection there could trigger asserts.
- * Cleanup of asserts in sbuf.c to catch problems earlier.
- * Create core when Assert() triggers.
-
- = New stuff =
-
- * New config vars: log_connections, log_disconnections,
- log_pooler_errors to turn on/off noise.
- * Config var: client_login_timeout to kill dead connections
- in login phase that could stall SUSPEND and thus online restart.
-
-2007-03-28 - PgBouncer 1.0.2 - "Supersonic Spoon"
-
- * libevent may report a deleted event inside same loop.
- Avoid socket reuse for one loop.
- * release_server() from disconnect_client() didnt look
- it the packet was actually sent.
-
-2007-03-15 - PgBouncer 1.0.1 - "Alien technology"
-
- = Fixes =
-
- * Mixed usage of cached and non-cached time, plus unsiged usec_t typedef
- created spurious query_timeout errors.
- * Fix rare case when socket woken up from send-wait could stay stalling.
- * More fair queueing of server connections. Before, a new query could
- get a server connections before older one.
- * Delay server release until everything is guaranteed to be sent.
-
- = Features =
-
- * SHOW SOCKETS command to have detailed info about state state.
- * Put PgSocket ptr to log, to help tracking one connection.
- * In console, allow SELECT in place of SHOW.
- * Various code cleanups.
-
-2007-03-13 - PgBouncer 1.0 - "Tuunitud bemm"
-
- * First public release.
-
--- /dev/null
+PgBouncer changelog
+===================
+
+Unreleased
+----------
+
+- Features
+
+ * SSL connection, auth via client cert.
+
+ * HBA-style access control file.
+
+ * Unix sockets support "peer" auth.
+
+PgBouncer 1.6.x
+---------------
+
+**2015-08-01 - PgBouncer 1.6 - "Zombies of the future"**
+
+- Features
+
+ * Load user password hash from postgres database.
+ New parameters:
+
+ auth_user
+ user to use for connecting same db and fetching user info.
+ Can be set per-database too.
+
+ auth_query
+ SQL query to run under auth_user.
+ Default: "SELECT usename, passwd FROM pg_shadow WHERE usename=$1"
+
+ (Cody Cutrer)
+
+ * Pooling mode can be configured both per-database and per-user.
+ (Cody Cutrer)
+
+ * Per-database and per-user connection limits: max_db_connections and
+ max_user_connections.
+ (Cody Cutrer / Pavel Stehule)
+
+ * Add DISABLE/ENABLE commands to prevent new connections.
+ (William Grant)
+
+ * New DNS backend: c-ares. Only DNS backend that supports all
+ interesting features: /etc/hosts with refresh, SOA lookup,
+ large replies (via TCP/EDNS+UDP), IPv6. It is the preferred
+ backend now, and probably will be **only** backend in the future,
+ as it's pointless to support zoo of inadequate libraries.
+
+ SNAFU: c-ares versions <= 1.10 have bug which breaks CNAME-s support
+ when IPv6 has been enabled. (Fixed upstream.) As a workaround,
+ c-ares <= 1.10 is used IPv4-only. So PgBouncer will drop other backends
+ only when c-ares >1.10 (still unreleased) has been out some time...
+
+ * Show remote_pid in SHOW CLIENTS/SERVERS. Available for clients that
+ connect over unix sockets and both tcp and unix socket server.
+ In case of tcp-server, the pid is taken from cancel key.
+
+ * Add separate config param (dns_nxdomain_ttl) for controlling
+ negative dns caching.
+ (Cody Cutrer)
+
+ * Add the client host IP address and port to application_name.
+ This is enabled by a config parameter application_name_add_host
+ which defaults to 'off'.
+ (Andrew Dunstan)
+
+ * Config files have '%include FILENAME' directive to allow configuration
+ to be split into several files.
+ (Andrew Dunstan)
+
+- Cleanups
+
+ * log: wrap ipv6 address with []
+
+ * log: On connect to server, show local ip and port
+
+ * win32: use gnu-style for long args: --foo
+
+ * Allow numbers in hostname, always try to parse with inet_pton
+
+ * Fix deallocate_all() in FAQ
+
+ * Fix incorrect keyword in example config file
+ (Magnus Hagander)
+
+ * Allow comments (with ';') in auth files.
+ (Guillaume Aubert)
+
+ * Fix spelling mistakes in log messages and comments.
+ (Dmitriy Olshevskiy)
+
+- Fixes
+
+ * fix launching new connections during maintenance
+ (Cody Cutrer)
+
+ * don't load auth file twice at boot
+ (Cody Cutrer)
+
+ * Proper invalidation for autodbs
+
+ * ipv6: Set IPV6_V6ONLY on listen socket.
+
+ * win32: Don't set SO_REUSEADDR on listen socket.
+
+ * Fix IPv6 address memcpy
+
+ * Fix cancellation of of waiting clients.
+ (Mathieu Fenniak)
+
+ * Small bug fix, must check calloc result
+ (Heikki Linnakangas)
+
+ * Add newline at the end of the PID file
+ (Peter Eisentraut)
+
+ * Don't allow new server connections when PAUSE <db> was issued.
+ (Petr Jelinek)
+
+ * Fix 'bad packet' during login when header is delayed.
+ (Michał Trojnara, Marko Kreen)
+
+ * Fix errors detected by Coverty.
+ (Euler Taveira)
+
+ * Disable server_idle_timeout when server count gets below min_pool (#60)
+ (Marko Kreen)
+
+PgBouncer 1.5.x
+---------------
+
+**2012-11-28 - PgBouncer 1.5.4 - "No Leaks, Potty-Training Successful"**
+
+- Fixes
+
+ * DNS: Fix memory leak in getaddrinfo_a() backend.
+
+ * DNS: Fix memory leak in udns backend.
+
+ * DNS: Fix stats calculation.
+
+ * DNS: Improve error message handling for getaddrinfo_a().
+
+ * Fix win32 compile.
+
+ * Fix compiler dependency support check in configure.
+
+ * Few documentation fixes.
+
+**2012-09-12 - PgBouncer 1.5.3 - "Quantum Toaster"**
+
+- Critical fix
+
+ * Too long database names can lead to crash, which
+ is remotely triggerable if autodbs are enabled.
+
+ The original checks assumed all names come from config files,
+ thus using fatal() was fine, but when autodbs are enabled
+ - by '*' in [databases] section - the database name can come
+ from network thus making remote shutdown possible.
+
+- Minor Features
+
+ * max_packet_size - config parameter to tune maximum packet size
+ that is allowed through. Default is kept same: (2G-1), but now
+ it can be made smaller.
+
+ * In case of unparseable packet header, show it in hex in log and
+ error message.
+
+- Fixes
+
+ * AntiMake: it used $(relpath) and $(abspath) to manupulate pathnames,
+ but the result was build failure when source tree path contained
+ symlinks. The code is now changed to work on plain strings only.
+
+ * console: now SET can be used to set empty string values.
+
+ * config.txt: show that all timeouts can be set in floats.
+ This is well-hidden feature introduced in 1.4.
+
+**2012-05-29 - PgBouncer 1.5.2 - "Don't Chew, Just Swallow"**
+
+- Fixes
+
+ * Due to mistake, reserve_pool_timeout was taken in microseconds,
+ not seconds, effectively activating reserve pool immediately
+ when pool got full. Now use it as seconds, as was intended.
+ (Noticed by Keyur Govande)
+
+**2012-04-17 - PgBouncer 1.5.1 - "Abort, Retry, Ignore?"**
+
+- Features
+
+ * Parameters to tune permissions on unix socket:
+ unix_socket_mode=0777, unix_socket_group=''.
+
+- Fixes
+
+ * Allow empty string for server-side variable - this is
+ needed to get "application_name" properly working, as it's
+ the only parameter that does not have server-side default.
+
+ * If connect string changes, require refresh of server parameters.
+ Previously PgBouncer continued with old parameters,
+ which breaks in case of Postgres upgrade.
+
+ * If autodb connect string changes, drop old connections.
+
+ * cf_setint: Use strtol() instead atoi() to parse integer config
+ parameters. It allows hex, octal and better error detection.
+
+ * Use sigqueue() to detect union sigval existence - fixes
+ compilation on HPUX.
+
+ * Remove 'git' command from Makefile, it throws random errors
+ in case of plain-tarball build.
+
+ * Document stats_period parameter. This tunes the period for
+ stats output.
+
+ * Require Asciidoc >= 8.4, seems docs are not compatible with
+ earlier versions anymore.
+
+ * Stop trying to retry on EINTR from close().
+
+**2012-01-05 - PgBouncer 1.5 - "Bouncing Satisified Clients Since 2007"**
+
+If you use more than 8 IPs behind one DNS name, you now need to
+use EDNS0 protocol to query. Only getaddrinfo_a()/getaddrinfo()
+and UDNS backends support it, libevent 1.x/2.x does not.
+To enable it for libc, add 'options edns0' to /etc/resolv.conf.
+
+GNU Make 3.81+ is required for building.
+
+- Features
+
+ * Detect DNS reply changes and invalidate connections to IPs no longer
+ present in latest reply.
+ (Petr Jelinek)
+
+ * DNS zone serial based hostname invalidation. When option
+ dns_zone_check_period is set, all DNS zones will be queried
+ for SOA, and when serial has changed, all hostnames
+ will be queried. This is needed to get deterministic
+ connection invalidation, because invalidation on lookup
+ is useless when no lookups are performed.
+ Works only with new UDNS backend.
+
+ * New SHOW DNS_HOSTS, SHOW DNS_ZONES commands to examine DNS cache.
+
+ * New param: min_pool_size - avoids dropping all connections
+ when there is no load.
+ (Filip Rembiałkowski)
+
+ * idle_in_transaction_timeout - kill transaction if idle too long.
+ Not set by default.
+
+ * New libudns backend for DNS lookups. More featureful than evdns.
+ Use --with-udns to activate. Does not work with IPv6 yet.
+
+ * KILL command, to immediately kill all connections for one database.
+ (Michael Tharp)
+
+ * Move to Antimake build system to have better looking Makefiles.
+ Now GNU Make 3.81+ is required for building.
+
+- Fixes
+
+ * DNS now works with IPv6 hostnames.
+
+ * Don't change connection state when NOTIFY arrives from server.
+
+ * Various documentation fixes.
+ (Dan McGee)
+
+ * Console: Support ident quoting with "". Originally we did not
+ have any commands that took database names, so no quoting was needed.
+
+ * Console: allow numbers at the stard of word regex. Trying
+ to use strict parser makes things too complex here.
+
+ * Don't expire auto DBs that are paused.
+ (Michael Tharp)
+
+ * Create auto databases as needed when doing PAUSE.
+ (Michael Tharp)
+
+ * Fix wrong log message issued by RESUME command.
+ (Peter Eisentraut)
+
+ * When user= without password= is in database connect string,
+ password will be taken from userlist.
+
+ * Parse '*' properly in takeover code.
+
+ * autogen.sh: work with older autoconf/automake.
+
+ * Fix run-as-service crash on win32 due to bad basename() from
+ mingw/msvc runtime. Now compat basename() is always used.
+
+PgBouncer 1.4.x
+---------------
+
+**2011-06-16 - PgBouncer 1.4.2 - "Strike-First Algorithm"**
+
+Affected OS-es: \*BSD, Solaris, Win32.
+
+- Portability Fixes
+
+ * Give CFLAGS to linker. Needed when using pthread-based
+ getaddrinfo_a() fallback.
+
+ * lib/find_modules.sh: Replace split() with index()+substr().
+ This should make it work with older AWKs.
+
+ * <usual/endian.h>: Ignore system htoX/Xtoh defines. There
+ may be only subset of macros defined.
+
+ * <usual/signal.h>: Separate compat sigval from compat sigevent
+
+ * <usual/socket.h>: Include <sys/uio.h> to get iovec
+
+ * <usual/time.h>: Better function autodetection on win32
+
+ * <usual/base_win32.h>: Remove duplicate sigval/sigevent declaration
+
+**2011-04-01 - PgBouncer 1.4.1 - "It Was All An Act"**
+
+- Features
+
+ * Support listening/connect for IPv6 addresses.
+ (Hannu Krosing)
+
+ * Multiple listen addresses in 'listen_addr'. For each getaddrinfo()
+ is called, so names can also be used.
+
+ * console: Send PgBouncer version as 'server_version' to client.
+
+- Important Fixes
+
+ * Disable getaddrinfo_a() on glibc < 2.9 as it crashes on older versions.
+
+ Notable affected OS'es: RHEL/CentOS 5.x (glibc 2.5), Ubuntu 8.04 (glibc 2.7).
+ Also Debian/lenny (glibc 2.7) which has non-crashing getaddrinfo_a()
+ but we have no good way to detect it.
+
+ Please use libevent 2.x on such OS'es, fallback getaddrinfo_a() is not
+ meant for production systems. And read new 'DNS lookup support' section
+ in README to see how DNS backend is picked.
+
+ (Hubert Depesz Lubaczewski, Dominique Hermsdorff, David Sommerseth)
+
+ * Default to --enable-evdns if libevent 2.x is used.
+
+ * Turn on tcp_keepalive by default, as that's what Postgres also does.
+ (Hubert Depesz Lubaczewski)
+
+ * Set default server_reset_query to DISCARD ALL to be compatible
+ with Postgres by default.
+
+ * win32: Fix crashes with NULL unix socket addr.
+ (Hiroshi Saito)
+
+ * Fix autodb cleanup: old cleanup code was mixing up databases and pools:
+ as soon as one empty pool was found, the database was tagged as 'idle',
+ potentially later killing database with active users.
+
+ Reported-By: Hubert Depesz Lubaczewski
+
+- Fixes
+
+ * Make compat getaddrinfo_a() non-blocking, by using single parallel
+ thread to do lookups.
+
+ * Enable pthread compilation if compat getaddrinfo_a is used.
+
+ * release_server missed setting ->last_lifetime_disconnect on lifetime disconnect.
+ (Emmanuel Courreges)
+
+ * win32: fix auth file on DOS line endings - load_file() did not take
+ account of file shringage when loading.
+ (Rich Schaaf)
+
+ * <usual/endian.h>: add autoconf detection for enc/dec functions
+ so it would not create conflicts on BSD.
+ (James Pye)
+
+ * Don't crash when config file does not exist.
+ (Lou Picciano)
+
+ * Don't crash on DNS lookup failure when logging on noise level (-v -v).
+ (Hubert Depesz Lubaczewski, Dominique Hermsdorff)
+
+ * Use backticks instead of $(cmd) in find_modules.sh to make it more portable.
+ (Lou Picciano)
+
+ * Use 'awk' instead of 'sed' in find_modules.sh to make it more portable.
+ (Giorgio Valoti)
+
+ * Log active async DNS backend info on startup.
+
+ * Fix --disable-evdns to mean 'no' instead 'yes'.
+
+ * Mention in docs that -R requires unix_socket_dir.
+
+ * Discuss server_reset_query in faq.txt.
+
+ * Restore lost memset in slab allocator
+
+ * Various minor portability fixes in libusual.
+
+**2011-01-11 - PgBouncer 1.4 - "Gore Code"**
+
+- Features
+
+ * Async DNS lookup - instead of resolving hostnames at reload time,
+ the names are now resolved at connect time, with configurable caching.
+ (See dns_max_ttl parameter.)
+
+ By default it uses getaddrinfo_a() (glibc) as backend, if it does not
+ exist, then getaddrinfo_a() is emulated via blocking(!) getaddrinfo().
+
+ When --enable-evdns argument to configure, libevent's evdns is used
+ as backend. It is not used by default, because libevent 1.3/1.4
+ contain buggy implementation. Only evdns in libevent 2.0 seems OK.
+
+ * New config var: syslog_ident, to tune syslog name.
+
+ * Proper support for `application_name` startup parameter.
+
+ * Command line long options (Guillaume Lelarge)
+
+ * Solaris portability fixes (Hubert Depesz Lubaczewski)
+
+ * New config var: disable_pqexec. Highly-paranoid environments
+ can disable Simple Query Protocol with that. Requires apps
+ that use only Extended Query Protocol.
+
+ * Postgres compat: if database name is empty in startup packet,
+ use user name as database.
+
+- Fixes
+
+ * DateStyle and TimeZone server params need to use exact case.
+
+ * Console: send datetime, timezone and stdstr server params to client.
+
+- Internal cleanups
+
+ * Use libusual library for low-level utility functions.
+
+ * Remove fixed-length limit from server params.
+
+PgBouncer 1.3.x
+---------------
+
+**2010-09-09 - PgBouncer 1.3.4 - "Bouncer is always right"**
+
+- Fixes
+
+ * Apply fast-fail logic at connect time. So if server is failing,
+ the clients get error when connecting.
+
+ * Don't tag automatically generated databases for checking on reload time,
+ otherwise they get killed, because they don't exist in config.
+
+ * Ignore application_name parameter by default. This avoids the need
+ for all Postgres 9.0 users to add it into ignore_startup_parameters=
+ themselves.
+
+ * Correct pg_auth quoting. '\' is not used there.
+
+ * Better error reporting on console, show incoming query to user.
+
+ * Support OS'es (OpenBSD) where tv_sec is not time_t.
+
+ * Avoid too noisy warnings on gcc 4.5.
+
+**2010-05-10 - PgBouncer 1.3.3 - "NSFW"**
+
+- Improvements
+
+ * Make listen(2) argument configurable: listen_backlog. This is
+ useful on OS'es, where system max allowed is configurable.
+
+ * Improve disconnect messages to show what username or dbname caused
+ login to fail.
+
+- Fixes
+
+ * Move fast-fail relaunch logic around. Old one was annoying in case of
+ permanently broken databases or users, by trying to retry even if
+ there is no clients who want to login.
+
+ * Make logging functions keep old errno, otherwise pgbouncer may act funny
+ on higher loglevels and logging problems.
+
+ * Increase the size of various startup-related buffers to handle
+ EDB more noisy startup.
+
+ * Detect V2 protocol startup request and give clear reason for disconnect.
+
+**2010-03-15 - PgBouncer 1.3.2 - "Boomerang Bullet"**
+
+- Fixes
+
+ * New config var 'query_wait_timeout'. If client does not get
+ server connection in this many seconds, it will be killed.
+
+ * If no server connection in pool and last connect failed, then
+ don't put client connections on hold but send error immediately.
+
+ This together with previous fix avoids unnecessary stalls if
+ a database has gone down.
+
+ * Track libevent state in sbuf.c to avoid double event_del(). Although
+ it usually is safe, it does not seem to work 100%. Now we should always
+ know whether it has been called or not.
+
+ * Disable maintenance during SUSPEND. Otherwise with short timeouts
+ the old bouncer could close few connections after sending them over.
+
+ * Apply client_login_timeout to clients waiting for welcome packet
+ (first server connection). Otherwise they can stay waiting
+ infinitely, unless there is query_timeout set.
+
+ * win32: Add switch -U/-P to -regservice to let user pick account
+ to run service under. Old automatic choice between Local Service and
+ Local System was not reliable enough.
+
+ * console: Remove \0 from end of text columns. It was hard to notice,
+ as C clients were fine with it.
+
+ * Documentation improvements. (Greg Sabino Mullane)
+
+ * Clarify few login-related log messages.
+
+ * Change logging level for pooler-sent errors (usually on disconnect) from INFO
+ to WARNING, as they signify problems.
+
+ * Change log message for query_timeout to "query timeout".
+
+**2009-07-06 - PgBouncer 1.3.1 - "Now fully conforming to NSA monitoring requirements"**
+
+- Fixes
+
+ * Fix problem with sbuf_loopcnt which could make connections hang.
+ If query or result length is nearby of multiple of (pktlen*sbuf_loopcnt)
+ [10k by default], it could stay waiting for more data which will not
+ appear.
+
+ * Make database reconfigure immediate. Currently old connections
+ could be reused after SIGHUP.
+
+ * Fix SHOW DATABASES which was broken due to column addition.
+
+ * Console access was disabled when "auth_mode=any" as pgbouncer dropped username.
+ Fix: if "auth_mode=any", allow any user to console as admin.
+
+ * Fix bad CUSTOM_ALIGN macro. Luckily it's unused if OS already
+ defines ALIGN macro thus seems the bug has not happened in wild.
+
+ * win32: call WSAStartup() always, not only in daemon mode
+ as config parsing wants to resolve hosts.
+
+ * win32: put quotes around config filename in service
+ cmdline to allow spaces in paths. Executable path
+ does not seem to need it due to some win32 magic.
+
+ * Add STATS to SHOW HELP text.
+
+ * doc/usage.txt: the time units in console results are in
+ microseconds, not milliseconds.
+
+**2009-02-18 - PgBouncer 1.3 - "New Ki-Smash Finishing Move"**
+
+- Features
+
+ * IANA has assigned port 6432 to be official port for PgBouncer.
+ Thus the default port number has changed to 6432. Existing
+ individual users do not need to change, but if you distribute
+ packages of PgBouncer, please change the package default
+ to official port.
+
+ * Dynamic database creation (David Galoyan)
+
+ Now you can define database with name "*". If defined, it's connect
+ string will be used for all undefined databases. Useful mostly
+ for test / dev environments.
+
+ * Windows support (Hiroshi Saito)
+
+ PgBouncer runs on Windows 2000+ now. Command line usage stays same,
+ except it cannot run as daemon and cannot do online reboot.
+ To run as service, define parameter service_name in config. Then::
+
+ > pgbouncer.exe config.ini -regservice
+ > net start SERVICE_NAME
+
+ To stop and unregister::
+
+ > net stop SERVICE_NAME
+ > pgbouncer.exe config.ini -unregservice
+
+ To use Windows Event Log, event DLL needs to be registered first::
+
+ > regsrv32 pgbevent.dll
+
+ Afterwards you can set "syslog = 1" in config.
+
+- Minor features
+
+ * Database names in config file can now be quoted with standard SQL
+ ident quoting, to allow non-standard characters in db names.
+
+ * New tunables: 'reserve_pool_size' and 'reserve_pool_timeout'.
+ In case there are clients in pool that have waited more that
+ 'reserve_pool_timeout' seconds, 'reserve_pool_size' specifies
+ the number of connections that can be added to pool. It can also
+ set per-pool with 'reserve_pool' connection variable.
+
+ * New tunable 'sbuf_loopcnt' to limit time spent on one socket.
+
+ In some situations - eg SMP server, local Postgres and fast network -
+ pgbouncer can run recv()->send() loop many times without blocking
+ on either side. But that means other connections will stall for
+ a long time. To make processing more fair, limit the times
+ of doing recv()->send() one socket. If count reaches limit,
+ just proceed processing other sockets. The processing for
+ that socket will resume on next event loop.
+
+ Thanks to Alexander Schöcke for report and testing.
+
+ * crypt() authentication is now optional, as it was removed from Postgres.
+ If OS does not provide it, pgbouncer works fine without it.
+
+ * Add milliseconds to log timestamps.
+
+ * Replace old MD5 implementation with more compact one.
+
+ * Update ISC licence with the FSF clarification.
+
+- Fixes
+
+ * In case event_del() reports failure, just proceed with cleanup.
+ Previously pgbouncer retried it, in case the failure was due ENOMEM.
+ But this has caused log floods with inifinite repeats, so it seems
+ libevent does not like it.
+
+ Why event_del() report failure first time is still mystery.
+
+ * --enable-debug now just toggles whether debug info is stripped from binary.
+ It no longer plays with -fomit-frame-pointer as it's dangerous.
+
+ * Fix include order, as otherwise system includes could come before
+ internal ones. Was problem for new md5.h include file.
+
+ * Include COPYRIGHT file in .tgz...
+
+PgBouncer 1.2.x
+---------------
+
+**2008-08-08 - PgBouncer 1.2.3 - "Carefully Selected Bytes"**
+
+- Fixes
+
+ * Disable SO_ACCEPTFILTER code for BSDs which did not work.
+ * Include example etc/userlist.txt in tgz.
+ * Use '$(MAKE)' instead 'make' for recursion (Jørgen Austvik)
+ * Define _GNU_SOURCE as glibc is useless otherwise.
+ * Let the libevent 1.1 pass link test so we can later report "1.3b+ needed"
+ * Detect stale pidfile and remove it.
+
+Thanks to Devrim GÜNDÜZ and Bjoern Metzdorf for problem reports and testing.
+
+**2008-08-06 - PgBouncer 1.2.2 - "Barf-bag Included"**
+
+- Fixes
+
+ * Remove 'drop_on_error', it was a bad idea. It was added as workaround
+ for broken plan cache behaviour in Postgres, but can cause damage
+ in common case when some queries always return error.
+
+**2008-08-04 - PgBouncer 1.2.1 - "Waterproof"**
+
+- Features
+
+ * New parameter 'drop_on_error' - if server throws error the connection
+ will not be reused but dropped after client finished with it. This is
+ needed to refresh plan cache. Automatic refresh does not work even in 8.3.
+ Defaults to 1.
+
+- Fixes
+
+ * SHOW SOCKETS/CLIENTS/SERVERS: Don't crash if socket has no buffer.
+ * Fix infinite loop on SUSPEND if suspend_timeout triggers.
+
+- Minor cleanups
+
+ * Use <sys/uio.h> for 'struct iovec'.
+ * Cancel shutdown (from SIGINT) on RESUME/SIGUSR2,
+ otherwise it will trigger on next PAUSE.
+ * Proper log message if console operation is canceled.
+
+**2008-07-29 - PgBouncer 1.2 - "Ordinary Magic Flute"**
+
+PgBouncer 1.2 now requires libevent version 1.3b or newer.
+Older libevent versions crash with new restart code.
+
+- Features
+
+ * Command line option (-u) and config parameter (user=) to support user
+ switching at startup. Also now pgbouncer refuses to run as root.
+
+ (Jacob Coby)
+
+ * More descriptive usage text (-h). (Jacob Coby)
+
+ * New database option: connect_query to allow run a query on new
+ connections before they are taken into use.
+
+ (Teodor Sigaev)
+
+ * New config var 'ignore_startup_parameters' to allow and ignore
+ extra parameters in startup packet. By default only 'database'
+ and 'user' are allowed, all others raise error. This is needed
+ to tolerate overenthusiastic JDBC wanting to unconditionally
+ set 'extra_float_digits=2' in startup packet.
+
+ * Logging to syslog: new parameters syslog=0/1 and
+ syslog_facility=daemon/user/local0.
+
+ * Less scary online restart (-R)
+ - Move FD loading before fork, so it logs to console and can be canceled by ^C
+ - Keep SHUTDOWN after fork, so ^C would be safe
+ - A connect() is attempted to unix socket to see if anyone is listening.
+ Now -R can be used even when no previous process was running. If there
+ is previous process, but -R is not used, startup fails.
+
+ * New console commands:
+ - SHOW TOTALS that shows stats summary (as goes to log) plus mem usage.
+ - SHOW ACTIVE_SOCKETS - like show sockets; but filter only active ones.
+
+- Less visible features
+
+ * suspend_timeout - drop stalled conns and long logins. This brings
+ additional safety to reboot.
+
+ * When remote database throws error on logging in, notify clients.
+
+ * Removing a database from config and reloading works - all connections
+ are killed and the database is removed.
+
+ * Fake some parameters on console SHOW/SET commands to be more Postgres-like.
+ That was needed to allow psycopg to connect to console.
+ (client_encoding/default_transaction_isolation/datestyle/timezone)
+
+ * Make server_lifetime=0 disconnect server connection immediately
+ after first use. Previously "0" made PgBouncer ignore server age.
+ As this behavior was undocumented, there should not be any users
+ depending on it.
+
+ * Internal improvements:
+ - Packet buffers are allocated lazily and reused. This should bring
+ huge decrease in memory usage. This also makes realistic to use
+ big pktbuf with lot of connections.
+ - Lot's of error handling improvements, PgBouncer should now
+ survive OOM situations gracefully.
+ - Use slab allocator for memory management.
+ - Lots of code cleanups.
+
+- Fixes
+
+ * Only single accept() was issued per event loop which could
+ cause connection backlog when having high amount of connection
+ attempts. Now the listening socket is always drained fully,
+ which should fix this.
+ * Handle EINTR from connect().
+ * Make configure.ac compatible with autoconf 2.59.
+ * Solaris compatibility fixes (Magne Mæhre)
+
+PgBouncer 1.1.x
+---------------
+
+**2007-12-10 - PgBouncer 1.1.2 - "The Hammer"**
+
+- Features
+
+ * Disconnects because of server_lifetime are now separated by
+ (server_lifetime / pool_size) seconds. This avoids pgbouncer
+ causing reconnect floods.
+
+- Fixes
+
+ * Online upgrade 1.0 -> 1.1 problems:
+
+ - 1.0 does not track server parameters, so they stay NULL
+ but 1.1 did not expect it and crashed.
+
+ - If server params are unknown, but client ones are set,
+ then issue a SET for them, instead complaining.
+
+ * Remove temp debug statements that were accidentally left
+ in code on INFO level, so they polluted logs.
+
+ * Unbroke debian/changelog
+
+- Cleanup
+
+ * reorder struct SBuf fields to get better alignment for buffer.
+
+**2007-10-26 - PgBouncer 1.1.1 - "Breakdancing Bee"**
+
+- Fixes
+
+ * Server parameter cache could stay uninitialized, which caused
+ unnecessary SET of them. This caused problem on 8.1 which
+ does not allow touching standard_conforming_strings.
+ (Thanks to Dimitri Fontaine for report & testing.)
+
+ * Some doc fixes.
+
+ * Include doc/fixman.py in .tgz.
+
+**2007-10-09 - PgBouncer 1.1 - "Mad-Hat Toolbox"**
+
+- Features
+
+ * Keep track of following server parameters::
+
+ client_encoding datestyle, timezone, standard_conforming_strings
+
+ * Database connect string enhancements:
+
+ - Accept hostname in host=
+ - Accept custom unix socket location in host=
+ - Accept quoted values: password=' asd''foo'
+
+ * New config var: server_reset_query, to be sent immidiately after release
+ * New config var: server_round_robin, to switch between LIFO and RR.
+ * Cancel pkt sent for idle connection does not drop it anymore.
+ * Cancel with ^C from psql works for SUSPEND / PAUSE.
+ * Print FD limits on startup.
+ * When suspending, try to hit packet boundary ASAP.
+ * Add 'timezone' to database parameters.
+ * Use longlived logfile fd. Reopened on SIGHUP / RELOAD;
+ * Local connection endpoint info in SHOW SERVERS/CLIENTS/SOCKETS.
+
+- Code cleanup
+
+ * More debug log messages include socket info.
+ * Magic number removal and error message cleanup. (David Fetter)
+ * Wrapper struct for current pkt info. Removes lot of compexity.
+
+- Fixes
+
+ * Detect invalid pkt headers better.
+ * auth_file modification check was broken, which made pgbouncer
+ reload it too often.
+
+PgBouncer 1.0.x
+---------------
+
+**2007-06-18 - PgBouncer 1.0.8 - "Undead Shovel Jutsu"**
+
+- Fixes
+
+ * Fix crash in cancel packet handling. (^C from psql)
+
+- Features
+
+ * PAUSE <db>; RESUME <db>; works now.
+ * Cleanup of console command parsing.
+ * Disable expensive in-list assert check.
+
+**2007-04-19 - PgBouncer 1.0.7 - "With Vitamin A-Z"**
+
+- Fixes
+
+ * Several error/notice packets with send() blocking between
+ triggered assert. Fix it by removing flushing logic altogether.
+ As pgbouncer does not actively buffer anything, its not needed.
+ It was a remnant from the time when buffering was pushed to
+ kernel with MSG_MORE.
+ * Additionally avoid calling recv() logic when sending unblocks.
+ * List search code for admin_users and stats_users
+ mishandled partial finds. Fix it.
+ * Standardise UNIX socket peer UID finding to getpeereid().
+
+**2007-04-12 - PgBouncer 1.0.6 - "Daily Dose"**
+
+- Fixes
+
+ * The "Disable maintenance during the takeover" fix could
+ disable maintenance altogether. Fix it.
+ * Compilation fix for FreeBSD, <sys/ucred.h> requires <sys/param.h> there.
+ Thanks go to Robert Gogolok for report.
+
+**2007-04-11 - PgBouncer 1.0.5 - "Enough for today"**
+
+- Fixes
+
+ * Fix online-restart bugs:
+ - Set ->ready for idle servers.
+ - Remove obsolete code from use_client_socket()
+ - Disable maintenance during the takeover.
+
+**2007-04-11 - PgBouncer 1.0.4 - "Last 'last' bug"**
+
+- Fixes
+
+ * Notice from idle server tagged server dirty.
+ release_server() did not expect it. Fix it
+ by dropping them.
+
+**2007-04-11 - PgBouncer 1.0.3 - "Fearless Fork"**
+
+- Fixes
+
+ * Some error handling was missing in login path, so dying
+ connection there could trigger asserts.
+ * Cleanup of asserts in sbuf.c to catch problems earlier.
+ * Create core when Assert() triggers.
+
+- New stuff
+
+ * New config vars: log_connections, log_disconnections,
+ log_pooler_errors to turn on/off noise.
+ * Config var: client_login_timeout to kill dead connections
+ in login phase that could stall SUSPEND and thus online restart.
+
+**2007-03-28 - PgBouncer 1.0.2 - "Supersonic Spoon"**
+
+- Fixes
+
+ * libevent may report a deleted event inside same loop.
+ Avoid socket reuse for one loop.
+ * release_server() from disconnect_client() didnt look
+ it the packet was actually sent.
+
+**2007-03-15 - PgBouncer 1.0.1 - "Alien technology"**
+
+- Fixes
+
+ * Mixed usage of cached and non-cached time, plus unsiged usec_t typedef
+ created spurious query_timeout errors.
+ * Fix rare case when socket woken up from send-wait could stay stalling.
+ * More fair queueing of server connections. Before, a new query could
+ get a server connections before older one.
+ * Delay server release until everything is guaranteed to be sent.
+
+- Features
+
+ * SHOW SOCKETS command to have detailed info about state state.
+ * Put PgSocket ptr to log, to help tracking one connection.
+ * In console, allow SELECT in place of SHOW.
+ * Various code cleanups.
+
+**2007-03-13 - PgBouncer 1.0 - "Tuunitud bemm"**
+
+- First public release.
+
projects / pgbouncer.git / commitdiff