[pgpool-general: 2962] Re: Connections stuck in CLOSE_WAIT, again
Juan Jose Perez
jperez at oteara.com
Wed Jun 25 00:11:43 JST 2014
Hi Tatsuo,
This is a copy of the pgpool.conf, with some changes in the name of
users, hosts, etc., that have been replaced with "xxxxxxxx". I guess you
don't need any of these data but if so, please let me know.
Best regards,
--
Juanjo Pérez
www.oteara.com
El 24/06/14 15:49, Tatsuo Ishii escribió:
> Juanjo,
>
> I need pgpool.conf. Can you please post it?
>
> Best regards,
> --
> Tatsuo Ishii
> SRA OSS, Inc. Japan
> English: http://www.sraoss.co.jp/index_en.php
> Japanese:http://www.sraoss.co.jp
>
>> The backend processes (there are two backends) are both connected in
>> idle state.
>> Network connections between pgpool and postgres backends are in
>> ESTABLISHED state. There are four connections with each backend since
>> we are using four databases.
>> The network connection between pgpool child and the client, remains in
>> CLOSE_WAIT state for a while.
>>
>> Regards,
>>
>> --
>> Juanjo Pérez
>>
>> www.oteara.com
>>
>> El 24/06/14 11:03, Tatsuo Ishii escribió:
>>> Looks like pgpool-II waiting for data coming from the socket connected
>>> to the backend connection. I would like to know corresponding backend
>>> was gone or not and network state (CLOSE_WAIT etc.).
>>>
>>> You can find backend pid (if exists) by using "show pool_pools"
>>> command. Then you can get network state by using netstat.
>>>
>>> Could you please do that?
>>>
>>> Best regards,
>>> --
>>> Tatsuo Ishii
>>> SRA OSS, Inc. Japan
>>> English: http://www.sraoss.co.jp/index_en.php
>>> Japanese:http://www.sraoss.co.jp
>>>
>>>> Thanks. I'll look into this.
>>>>
>>>> Best regards,
>>>> --
>>>> Tatsuo Ishii
>>>> SRA OSS, Inc. Japan
>>>> English: http://www.sraoss.co.jp/index_en.php
>>>> Japanese:http://www.sraoss.co.jp
>>>>
>>>>> This is the full output of gdb attached to one of the pgpool children
>>>>> in DISCARD state:
>>>>>
>>>>> #0 0x00007fa8da59fbe3 in select () from /lib/x86_64-linux-gnu/libc.so.6
>>>>> #1 0x0000000000416621 in pool_check_fd (cp=cp at entry=0x1cd86c0) at
>>>>> #pool_process_query.c:951
>>>>> #2 0x0000000000416826 in pool_check_fd (cp=cp at entry=0x1cd86c0) at
>>>>> #pool_process_query.c:971
>>>>> #3 0x000000000041d99c in pool_read (cp=0x1cd86c0,
>>>>> #buf=buf at entry=0x7fffb797e053, len=len at entry=1) at pool_stream.c:139
>>>>> #4 0x000000000041c4ce in read_kind_from_backend
>>>>> #(frontend=frontend at entry=0x1ccb7c0, backend=backend at entry=0x1cb5c28,
>>>>> decided_kind=decided_kind at entry=0x7fffb797e45f "") at
>>>>> pool_process_query.c:3771
>>>>> #5 0x000000000044e291 in ProcessBackendResponse
>>>>> #(frontend=frontend at entry=0x1ccb7c0, backend=backend at entry=0x1cb5c28,
>>>>> state=state at entry=0x7fffb797e4c8,
>>>>> num_fields=num_fields at entry=0x7fffb797e4c6) at
>>>>> pool_proto_modules.c:2742
>>>>> #6 0x0000000000419d85 in pool_process_query
>>>>> #(frontend=frontend at entry=0x1ccb7c0, backend=backend at entry=0x1cb5c28,
>>>>> reset_request=reset_request at entry=1) at pool_process_query.c:289
>>>>> #7 0x000000000040c68f in do_child (unix_fd=unix_fd at entry=4,
>>>>> #inet_fd=inet_fd at entry=5) at child.c:403
>>>>> #8 0x00000000004077ff in fork_a_child (unix_fd=4, inet_fd=5, id=42) at
>>>>> #main.c:1238
>>>>> #9 0x0000000000407e63 in reaper () at main.c:2457
>>>>> #10 reaper () at main.c:2369
>>>>> #11 0x00000000004087ed in pool_sleep (second=<optimized out>) at
>>>>> #main.c:2654
>>>>> #12 0x00000000004064c9 in main (argc=<optimized out>, argv=<optimized
>>>>> #out>) at main.c:836
>>>>>
>>>>> Many thanks,
>>>>>
>>>>> --
>>>>> Juanjo Pérez
>>>>>
>>>>> www.oteara.com
>>>>>
>>>>> El 20/06/14 01:19, Tatsuo Ishii escribió:
>>>>>> Can you please post stack trace with symbols? I need identify the
>>>>>> code path. There are too may similar code path like this.
>>>>>>
>>>>>> Best regards,
>>>>>> --
>>>>>> Tatsuo Ishii
>>>>>> SRA OSS, Inc. Japan
>>>>>> English: http://www.sraoss.co.jp/index_en.php
>>>>>> Japanese:http://www.sraoss.co.jp
>>>>>>
>>>>>>> I have the same problem with PuppetDB fortend.
>>>>>>> When I stop the service of PuppetDB, all connections from pgpool is
>>>>>>> CLOSE_WAIT and in DISCARD state, even with connection timeout set to 1
>>>>>>> minute.
>>>>>>> here is the summery from gdb:
>>>>>>>
>>>>>>> the hanged function is:
>>>>>>> __select_no_cancel() from /lib64/libc.so.6.
>>>>>>>
>>>>>>> stacktrace output:
>>>>>>>
>>>>>>> 0 __select_no_cancel() from /lib64/libc.so.6.
>>>>>>> 1 pool_check_fd
>>>>>>> 2 pool_read
>>>>>>> 3 read_kind_from_backend
>>>>>>> 4 ProcessBackendResponse
>>>>>>> 5 pool_process_query
>>>>>>> 6 fork_a_child()
>>>>>>> 7 reaper
>>>>>>> 8 pool_sleep
>>>>>>> 9 main
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Jun 19, 2014 at 2:29 AM, Tatsuo Ishii <ishii at postgresql.org>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> You said your developer found pgpool child process in DISCARD state.
>>>>>>>>
>>>>>>>> Please attach gdb to the process in DISCARD state and take
>>>>>>>> backtrace. Also I need actual netsta -anp outputs.
>>>>>>>>
>>>>>>>> Best regards,
>>>>>>>> --
>>>>>>>> Tatsuo Ishii
>>>>>>>> SRA OSS, Inc. Japan
>>>>>>>> English: http://www.sraoss.co.jp/index_en.php
>>>>>>>> Japanese:http://www.sraoss.co.jp
>>>>>>>>
>>>>>>>>> Hi Tatsuo,
>>>>>>>>>
>>>>>>>>> We are facing this same problem, and as I see it remains unsolved (or
>>>>>>>>> perhaps they didn't report the solution).
>>>>>>>>> We are using pgpool 3.3.3, with two postgres 9.1 in streaming
>>>>>>>>> replication. The OS is Debian 3.2.54-2 (64bits).
>>>>>>>>>
>>>>>>>>> The log shows messages like this:
>>>>>>>>>
>>>>>>>>> ProcessFrontendResponse: failed to read kind from frontend.
>>>>>>>> frontend
>>>>>>>>> abnormally exited
>>>>>>>>>
>>>>>>>>> I'm not sure but it looks like one for each connection left unclosed.
>>>>>>>>>
>>>>>>>>> Also, a ps -ef returns a lot of pgpool children in DISCARD state. And
>>>>>>>>> the netstat -anp, gives the correspondent TCP connection in
>>>>>>>> CLOSE_WAIT
>>>>>>>>> state.
>>>>>>>>>
>>>>>>>>> The developer has checked the client process is closing the
>>>>>>>>> connections and we try connecting directly to the postgres and it
>>>>>>>>> worked fine.
>>>>>>>>>
>>>>>>>>> When you say "to attach debugger", do you mean change log_statment =
>>>>>>>>> true or debug_level to a value other than 0 or any other procedure?
>>>>>>>>>
>>>>>>>>> Many thanks,
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Juanjo Pérez
>>>>>>>>>
>>>>>>>>> www.oteara.com
>>>>>>>>>
>>>>>>>>> El 02/04/14 01:05, Tatsuo Ishii escribió:
>>>>>>>>>>> We have a client on 3.3 experiencing the the problem noted here:
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>> http://www.sraoss.jp/pipermail/pgpool-general/2012-December/001283.html
>>>>>>>>>>> strace is showing the child processes at:
>>>>>>>>>>>
>>>>>>>>>>> clone(child_stack=0,
>>>>>>>>>>> flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
>>>>>>>>>>> child_tidptr=0x7fcf659f3a10) = 6258
>>>>>>>>>>>
>>>>>>>>>>> I didn't see any resolution of that issue; is there data we can gather
>>>>>>>>>>> to assist?
>>>>>>>>>> I followed the old 2012 posting with:
>>>>>>>>>>
>>>>>>>>>>> That means pgpool does not close the socket connected to by your
>>>>>>>>>>> applications. Is it possible to attach debugger to such that pgpool
>>>>>>>>>>> process to see what pgpool is doing?
>>>>>>>>>> But I got no response until now. Can you please do this?
>>>>>>>>>>
>>>>>>>>>> Best regards,
>>>>>>>>>> --
>>>>>>>>>> Tatsuo Ishii
>>>>>>>>>> SRA OSS, Inc. Japan
>>>>>>>>>> English: http://www.sraoss.co.jp/index_en.php
>>>>>>>>>> Japanese: http://www.sraoss.co.jp
>>>>>>>>>> _______________________________________________
>>>>>>>>>> pgpool-general mailing list
>>>>>>>>>> pgpool-general at pgpool.net
>>>>>>>>>> http://www.pgpool.net/mailman/listinfo/pgpool-general
>>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> pgpool-general mailing list
>>>>>>>>> pgpool-general at pgpool.net
>>>>>>>>> http://www.pgpool.net/mailman/listinfo/pgpool-general
>>>>>>>> _______________________________________________
>>>>>>>> pgpool-general mailing list
>>>>>>>> pgpool-general at pgpool.net
>>>>>>>> http://www.pgpool.net/mailman/listinfo/pgpool-general
>>>>>>>>
>>>> _______________________________________________
>>>> pgpool-general mailing list
>>>> pgpool-general at pgpool.net
>>>> http://www.pgpool.net/mailman/listinfo/pgpool-general
-------------- next part --------------
# ----------------------------
# pgPool-II configuration file
# ----------------------------
#
# This file consists of lines of the form:
#
# name = value
#
# Whitespace may be used. Comments are introduced with "#" anywhere on a line.
# The complete list of parameter names and allowed values can be found in the
# pgPool-II documentation.
#
# This file is read on server startup and when the server receives a SIGHUP
# signal. If you edit the file on a running system, you have to SIGHUP the
# server for the changes to take effect, or use "pgpool reload". Some
# parameters, which are marked below, require a server shutdown and restart to
# take effect.
#
#------------------------------------------------------------------------------
# CONNECTIONS
#------------------------------------------------------------------------------
# - pgpool Connection Settings -
listen_addresses = '*'
# Host name or IP address to listen on:
# '*' for all, '' for no TCP/IP connections
# (change requires restart)
port = 9999
# Port number
# (change requires restart)
socket_dir = '/tmp'
# Unix domain socket path
# The Debian package defaults to
# /var/run/postgresql
# (change requires restart)
# - pgpool Communication Manager Connection Settings -
pcp_port = 9898
# Port number for pcp
# (change requires restart)
pcp_socket_dir = '/tmp'
# Unix domain socket path for pcp
# The Debian package defaults to
# /var/run/postgresql
# (change requires restart)
# - Backend Connection Settings -
# Host name or IP address to connect to for backend 0
# Port number for backend 0
# Weight for backend 0 (only in load balancing mode)
# Data directory for backend 0
# Controls various backend behavior
# ALLOW_TO_FAILOVER or DISALLOW_TO_FAILOVER
# - Authentication -
enable_pool_hba = off
# Use pool_hba.conf for client authentication
pool_passwd = 'xxxxxxxx'
# File name of pool_passwd for md5 authentication.
# "" disables pool_passwd.
# (change requires restart)
authentication_timeout = 60
# Delay in seconds to complete client authentication
# 0 means no timeout.
# - SSL Connections -
ssl = off
# Enable SSL support
# (change requires restart)
#ssl_key = './server.key'
# Path to the SSL private key file
# (change requires restart)
#ssl_cert = './server.cert'
# Path to the SSL public certificate file
# (change requires restart)
#ssl_ca_cert = ''
# Path to a single PEM format file
# containing CA root certificate(s)
# (change requires restart)
#ssl_ca_cert_dir = ''
# Directory containing CA root certificate(s)
# (change requires restart)
#------------------------------------------------------------------------------
# POOLS
#------------------------------------------------------------------------------
# - Pool size -
num_init_children = 64
# Number of pools
# (change requires restart)
max_pool = 4
# Number of connections per pool
# (change requires restart)
# - Life time -
child_life_time = 300
# Pool exits after being idle for this many seconds
child_max_connections = 0
# Pool exits after receiving that many connections
# 0 means no exit
connection_life_time = 0
# Connection to backend closes after being idle for this many seconds
# 0 means no close
client_idle_limit = 600
# Client is disconnected after being idle for that many seconds
# (even inside an explicit transactions!)
# 0 means no disconnection
#------------------------------------------------------------------------------
# LOGS
#------------------------------------------------------------------------------
# - Where to log -
log_destination = 'stderr'
# Where to log
# Valid values are combinations of stderr,
# and syslog. Default to stderr.
# - What to log -
print_timestamp = on
# Print timestamp on each line
# (change requires restart)
log_connections = off
# Log connections
log_hostname = off
# Hostname will be shown in ps status
# and in logs if connections are logged
log_statement = off
# Log all statements
log_per_node_statement = off
# Log all statements
# with node and backend informations
log_standby_delay = 'none'
# Log standby delay
# Valid values are combinations of always,
# if_over_threshold, none
# - Syslog specific -
syslog_facility = 'LOCAL0'
# Syslog local facility. Default to LOCAL0
syslog_ident = 'pgpool'
# Syslog program identification string
# Default to 'pgpool'
# - Debug -
debug_level = 0
# Debug message verbosity level
# 0 means no message, 1 or more mean verbose
#------------------------------------------------------------------------------
# FILE LOCATIONS
#------------------------------------------------------------------------------
pid_file_name = '/var/run/pgpool/pgpool.pid'
# PID file name
# (change requires restart)
logdir = '/var/log/pgpool'
# Directory of pgPool status file
# (change requires restart)
#------------------------------------------------------------------------------
# CONNECTION POOLING
#------------------------------------------------------------------------------
connection_cache = on
# Activate connection pools
# (change requires restart)
# Semicolon separated list of queries
# to be issued at the end of a session
# The default is for 8.3 and later
reset_query_list = 'ABORT; DISCARD ALL'
# The following one is for 8.2 and before
#reset_query_list = 'ABORT; RESET ALL; SET SESSION AUTHORIZATION DEFAULT'
#------------------------------------------------------------------------------
# REPLICATION MODE
#------------------------------------------------------------------------------
replication_mode = off
# Activate replication mode
# (change requires restart)
replicate_select = off
# Replicate SELECT statements
# when in replication or parallel mode
# replicate_select is higher priority than
# load_balance_mode.
insert_lock = off
# Automatically locks a dummy row or a table
# with INSERT statements to keep SERIAL data
# consistency
# Without SERIAL, no lock will be issued
lobj_lock_table = ''
# When rewriting lo_creat command in
# replication mode, specify table name to
# lock
# - Degenerate handling -
replication_stop_on_mismatch = off
# On disagreement with the packet kind
# sent from backend, degenerate the node
# which is most likely "minority"
# If off, just force to exit this session
failover_if_affected_tuples_mismatch = off
# On disagreement with the number of affected
# tuples in UPDATE/DELETE queries, then
# degenerate the node which is most likely
# "minority".
# If off, just abort the transaction to
# keep the consistency
#------------------------------------------------------------------------------
# LOAD BALANCING MODE
#------------------------------------------------------------------------------
load_balance_mode = on
# Activate load balancing mode
# (change requires restart)
ignore_leading_white_space = on
# Ignore leading white spaces of each query
white_function_list = ''
# Comma separated list of function names
# that don't write to database
# Regexp are accepted
black_function_list = 'currval,lastval,nextval,setval'
# Comma separated list of function names
# that write to database
# Regexp are accepted
#------------------------------------------------------------------------------
# MASTER/SLAVE MODE
#------------------------------------------------------------------------------
master_slave_mode = on
# Activate master/slave mode
# (change requires restart)
master_slave_sub_mode = 'stream'
# Master/slave sub mode
# Valid values are combinations slony or
# stream. Default is slony.
# (change requires restart)
# - Streaming -
sr_check_period = 10
# Streaming replication check period
# Disabled (0) by default
sr_check_user = 'xxxxxxxx'
# Streaming replication check user
# This is neccessary even if you disable streaming
# replication delay check by sr_check_period = 0
sr_check_password = 'xxxxxxxx'
# Password for streaming replication check user
delay_threshold = 0
# Threshold before not dispatching query to standby node
# Unit is in bytes
# Disabled (0) by default
# - Special commands -
follow_master_command = ''
# Executes this command after master failover
# Special values:
# %d = node id
# %h = host name
# %p = port number
# %D = database cluster path
# %m = new master node id
# %H = hostname of the new master node
# %M = old master node id
# %P = old primary node id
# %r = new master port number
# %R = new master database cluster path
# %% = '%' character
#------------------------------------------------------------------------------
# PARALLEL MODE
#------------------------------------------------------------------------------
parallel_mode = off
# Activates parallel query mode
# (change requires restart)
pgpool2_hostname = ''
# Set pgpool2 hostname
# (change requires restart)
# - System DB info -
#system_db_hostname = 'localhost'
# (change requires restart)
#system_db_port = 5432
# (change requires restart)
#system_db_dbname = 'pgpool'
# (change requires restart)
#system_db_schema = 'pgpool_catalog'
# (change requires restart)
#system_db_user = 'pgpool'
# (change requires restart)
#system_db_password = ''
# (change requires restart)
#------------------------------------------------------------------------------
# HEALTH CHECK
#------------------------------------------------------------------------------
health_check_period = 10
# Health check period
# Disabled (0) by default
health_check_timeout = 20
# Health check timeout
# 0 means no timeout
health_check_user = 'xxxxxxxx'
# Health check user
health_check_password = 'xxxxxxxx'
# Password for health check user
health_check_max_retries = 0
# Maximum number of times to retry a failed health check before giving up.
health_check_retry_delay = 1
# Amount of time to wait (in seconds) between retries.
#------------------------------------------------------------------------------
# FAILOVER AND FAILBACK
#------------------------------------------------------------------------------
failover_command = '/etc/failover.sh %d "%h" %p %D %m %M "%H" %P'
# Executes this command at failover
# Special values:
# %d = node id
# %h = host name
# %p = port number
# %D = database cluster path
# %m = new master node id
# %H = hostname of the new master node
# %M = old master node id
# %P = old primary node id
# %r = new master port number
# %R = new master database cluster path
# %% = '%' character
failback_command = '/bin/rm -f /var/log/pgpool/trigger/trigger_file1'
# Executes this command at failback.
# Special values:
# %d = node id
# %h = host name
# %p = port number
# %D = database cluster path
# %m = new master node id
# %H = hostname of the new master node
# %M = old master node id
# %P = old primary node id
# %r = new master port number
# %R = new master database cluster path
# %% = '%' character
fail_over_on_backend_error = on
# Initiates failover when reading/writing to the
# backend communication socket fails
# If set to off, pgpool will report an
# error and disconnect the session.
search_primary_node_timeout = 10
# Timeout in seconds to search for the
# primary node when a failover occurs.
# 0 means no timeout, keep searching
# for a primary node forever.
#------------------------------------------------------------------------------
# ONLINE RECOVERY
#------------------------------------------------------------------------------
recovery_user = 'xxxxxxxx'
# Online recovery user
recovery_password = 'xxxxxxxx'
# Online recovery password
recovery_1st_stage_command = 'basebackup.sh'
# Executes a command in first stage
recovery_2nd_stage_command = ''
# Executes a command in second stage
recovery_timeout = 90
# Timeout in seconds to wait for the
# recovering node's postmaster to start up
# 0 means no wait
client_idle_limit_in_recovery = 0
# Client is disconnected after being idle
# for that many seconds in the second stage
# of online recovery
# 0 means no disconnection
# -1 means immediate disconnection
#------------------------------------------------------------------------------
# WATCHDOG
#------------------------------------------------------------------------------
# - Enabling -
use_watchdog = on
# Activates watchdog
# (change requires restart)
# -Connection to up stream servers -
trusted_servers = 'xxxxxxxx'
# trusted server list which are used
# to confirm network connection
# (hostA,hostB,hostC,...)
# (change requires restart)
ping_path = '/bin'
# ping command path
# (change requires restart)
# - Watchdog communication Settings -
wd_hostname = 'xxxxxxxx'
# Host name or IP address of this watchdog
# (change requires restart)
wd_port = 9000
# port number for watchdog service
# (change requires restart)
wd_authkey = 'xxxxxxxx'
# Authentication key for watchdog communication
# (change requires restart)
# - Virtual IP control Setting -
delegate_IP = 'xxxxxxxx'
# delegate IP address
# If this is empty, virtual IP never bring up.
# (change requires restart)
ifconfig_path = '/etc/apache2/sbin'
# ifconfig command path
# (change requires restart)
if_up_cmd = 'ifconfig eth0:0 inet $_IP_$ netmask 255.255.255.0'
# startup delegate IP command
# (change requires restart)
if_down_cmd = 'ifconfig eth0:0 down'
# shutdown delegate IP command
# (change requires restart)
arping_path = '/etc/apache2/sbin'
# (change requires restart)
arping_cmd = 'arping $_IP_$ -c 3'
# arping command
# (change requires restart)
# - Behaivor on escalation Setting -
clear_memqcache_on_escalation = on
# Clear all the query cache on shared memory
# when standby pgpool escalate to active pgpool
# (= virtual IP holder).
# This should be off if client connects to pgpool
# not using virtual IP.
# (change requires restart)
wd_escalation_command = ''
# Executes this command at escalation on new active pgpool.
# (change requires restart)
# - Lifecheck Setting -
# -- common --
wd_lifecheck_method = 'heartbeat'
# Method of watchdog lifecheck ('heartbeat' or 'query')
# (change requires restart)
wd_interval = 10
# lifecheck interval (sec) > 0
# (change requires restart)
# -- heartbeat mode --
wd_heartbeat_port = 9694
# Port number for receiving heartbeat signal
# (change requires restart)
wd_heartbeat_keepalive = 2
# Interval time of sending heartbeat signal (sec)
# (change requires restart)
wd_heartbeat_deadtime = 30
# Deadtime interval for heartbeat signal (sec)
# (change requires restart)
# Host name or IP address of destination 0
# for sending heartbeat signal.
# (change requires restart)
# Port number of destination 0 for sending
# heartbeat signal. Usually this is the
# same as wd_heartbeat_port.
# (change requires restart)
# Name of NIC device (such like 'eth0')
# used for sending/receiving heartbeat
# signal to/from destination 0.
# This works only when this is not empty
# and pgpool has root privilege.
# (change requires restart)
#heartbeat_destination1 = 'host0_ip2'
#heartbeat_destination_port1 = 9694
#heartbeat_device1 = ''
# -- query mode --
wd_life_point = 3
# lifecheck retry times
# (change requires restart)
wd_lifecheck_query = 'SELECT 1'
# lifecheck query to pgpool from watchdog
# (change requires restart)
wd_lifecheck_dbname = 'template1'
# Database name connected for lifecheck
# (change requires restart)
wd_lifecheck_user = 'xxxxxxxx'
# watchdog user monitoring pgpools in lifecheck
# (change requires restart)
wd_lifecheck_password = 'xxxxxxxx'
# Password for watchdog user in lifecheck
# (change requires restart)
# - Other pgpool Connection Settings -
#other_pgpool_hostname0 = 'host0'
# Host name or IP address to connect to for other pgpool 0
# (change requires restart)
#other_pgpool_port0 = 5432
# Port number for othet pgpool 0
# (change requires restart)
#other_wd_port0 = 9000
# Port number for othet watchdog 0
# (change requires restart)
#other_pgpool_hostname1 = 'host1'
#other_pgpool_port1 = 5432
#other_wd_port1 = 9000
#------------------------------------------------------------------------------
# OTHERS
#------------------------------------------------------------------------------
relcache_expire = 0
# Life time of relation cache in seconds.
# 0 means no cache expiration(the default).
# The relation cache is used for cache the
# query result against PostgreSQL system
# catalog to obtain various information
# including table structures or if it's a
# temporary table or not. The cache is
# maintained in a pgpool child local memory
# and being kept as long as it survives.
# If someone modify the table by using
# ALTER TABLE or some such, the relcache is
# not consistent anymore.
# For this purpose, cache_expiration
# controls the life time of the cache.
relcache_size = 256
# Number of relation cache
# entry. If you see frequently:
# "pool_search_relcache: cache replacement happend"
# in the pgpool log, you might want to increate this number.
check_temp_table = on
# If on, enable temporary table check in SELECT statements.
# This initiates queries against system catalog of primary/master
# thus increases load of master.
# If you are absolutely sure that your system never uses temporary tables
# and you want to save access to primary/master, you could turn this off.
# Default is on.
#------------------------------------------------------------------------------
# ON MEMORY QUERY MEMORY CACHE
#------------------------------------------------------------------------------
memory_cache_enabled = off
# If on, use the memory cache functionality, off by default
memqcache_method = 'shmem'
# Cache storage method. either 'shmem'(shared memory) or
# 'memcached'. 'shmem' by default
# (change requires restart)
memqcache_memcached_host = 'localhost'
# Memcached host name or IP address. Mandatory if
# memqcache_method = 'memcached'.
# Defaults to localhost.
# (change requires restart)
memqcache_memcached_port = 11211
# Memcached port number. Mondatory if memqcache_method = 'memcached'.
# Defaults to 11211.
# (change requires restart)
memqcache_total_size = 67108864
# Total memory size in bytes for storing memory cache.
# Mandatory if memqcache_method = 'shmem'.
# Defaults to 64MB.
# (change requires restart)
memqcache_max_num_cache = 1000000
# Total number of cache entries. Mandatory
# if memqcache_method = 'shmem'.
# Each cache entry consumes 48 bytes on shared memory.
# Defaults to 1,000,000(45.8MB).
# (change requires restart)
memqcache_expire = 0
# Memory cache entry life time specified in seconds.
# 0 means infinite life time. 0 by default.
# (change requires restart)
memqcache_auto_cache_invalidation = on
# If on, invalidation of query cache is triggered by corresponding
# DDL/DML/DCL(and memqcache_expire). If off, it is only triggered
# by memqcache_expire. on by default.
# (change requires restart)
memqcache_maxcache = 409600
# Maximum SELECT result size in bytes.
# Must be smaller than memqcache_cache_block_size. Defaults to 400KB.
# (change requires restart)
memqcache_cache_block_size = 1048576
# Cache block size in bytes. Mandatory if memqcache_method = 'shmem'.
# Defaults to 1MB.
# (change requires restart)
memqcache_oiddir = '/var/log/pgpool/oiddir'
# Temporary work directory to record table oids
# (change requires restart)
white_memqcache_table_list = ''
# Comma separated list of table names to memcache
# that don't write to database
# Regexp are accepted
black_memqcache_table_list = ''
# Comma separated list of table names not to memcache
# that don't write to database
# Regexp are accepted
ssl_key = ''
ssl_cert = ''
ssl_ca_cert = ''
ssl_ca_cert_dir = ''
backend_hostname0 = 'xxxxxxxx'
backend_port0 = 5432
backend_weight0 = 1
backend_data_directory0 = '/var/lib/postgresql/9.1/main/'
backend_flag0= 'ALLOW_TO_FAILOVER'
backend_hostname1 = 'xxxxxxxx'
backend_port1 = 5432
backend_weight1 = 1
backend_data_directory1 = '/var/lib/postgresql/9.1/main/'
backend_flag1= 'ALLOW_TO_FAILOVER'
other_pgpool_hostname0 = 'xxxxxxxx'
other_pgpool_port0 = 9999
other_wd_port0 = 9000
heartbeat_destination0 = 'xxxxxxxx'
heartbeat_destination_port0 = 9694
heartbeat_device0 = ''
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