[Pgpool-general] pgpool-II 2.2 on Debian not allowing new connections

Wed Mar 25 17:37:49 UTC 2009

Dear All

Installed pgpool-ii 2.2 on Debian 5 (lenny) amd64. (newest file is
pool_auth.c 2009-02-24 02:20)

Currently running against psql 8.3.5 on 2nd physical machine (Debian 5
(lenny) amd-64), prior to replicating/load-balancing against two
external psql servers (the pgpool machine is not running psql server).

Had two instances today of new clients failing to connect to pgpool
(timing out), approximately 4 hours apart. Existing connections keep
working (~10 concurrent connections). I am still able to connect from
the machine running pgpool to the psql server directly so not running
out of connections at the back end.

I have attached the pgpool.conf file below.

#
# pgpool-II configuration file sample
# $Header: /cvsroot/pgpool/pgpool-II/pgpool.conf.sample,v 1.4.2.3
2007/10/12 09:15:02 y-asaba Exp $

# Host name or IP address to listen on: '*' for all, '' for no TCP/IP
# connections
listen_addresses = '*'

# Port number for pgpool
port = 5432

# Port number for pgpool communication manager
pcp_port = 9898

# Unix domain socket path.  (The Debian package defaults to
# /var/run/postgresql.)
socket_dir = '/var/run/postgresql'

# Unix domain socket path for pgpool communication manager.
# (Debian package defaults to /var/run/postgresql)
pcp_socket_dir = '/var/run/postgresql'

# Unix domain socket path for the backend. Debian package defaults to
/var/run/postgresql!
backend_socket_dir = '/var/run/postgresql'

# pgpool communication manager timeout. 0 means no timeout, but strongly
not recommended!
pcp_timeout = 10

# number of pre-forked child process
num_init_children = 32

# Number of connection pools allowed for a child process
max_pool = 4

# If idle for this many seconds, child exits.  0 means no timeout.
child_life_time = 300

# If idle for this many seconds, connection to PostgreSQL closes.
# 0 means no timeout.
connection_life_time = 500

# If child_max_connections connections were received, child exits.
# 0 means no exit.
child_max_connections = 250

# Maximum time in seconds to complete client authentication.
# 0 means no timeout.
authentication_timeout = 60

# Logging directory (more accurately, the directory for the PID file)
logdir = '/var/run/postgresql'

# Replication mode
replication_mode = true

# Set this to true if you want to avoid deadlock situations when
# replication is enabled.  There will, however, be a noticable performance
# degradation.  A workaround is to set this to false and insert a /*STRICT*/
# comment at the beginning of the SQL command.
replication_strict = true

# When replication_strict is set to false, there will be a chance for
# deadlocks.  Set this to nonzero (in milliseconds) to detect this
# situation and resolve the deadlock by aborting current session.
replication_timeout = 5000

# Load balancing mode, i.e., all SELECTs except in a transaction block
# are load balanced.  This is ignored if replication_mode is false.
load_balance_mode = true

# if there's a data mismatch between master and secondary
# start degeneration to stop replication mode
replication_stop_on_mismatch = true

# If true, replicate SELECT statement when load balancing is disabled.
# If false, it is only sent to the master node.
replicate_select = false

# Semicolon separated list of queries to be issued at the end of a session
#reset_query_list = 'ABORT; RESET ALL; SET SESSION AUTHORIZATION DEFAULT'
reset_query_list = 'ABORT; DISCARD ALL'

# If true print timestamp on each log line.
print_timestamp = true

# If true, operate in master/slave mode.
master_slave_mode = false

# If true, cache connection pool.
connection_cache = false

# Health check timeout.  0 means no timeout.
health_check_timeout = 20

# Health check period.  0 means no health check.
health_check_period = 0

# Health check user
health_check_user = 'nobody'

# If true, automatically lock table with INSERT statements to keep SERIAL
# data consistency.  An /*INSERT LOCK*/ comment has the same effect.  A
# /NO INSERT LOCK*/ comment disables the effect.
insert_lock = false

# If true, ignore leading white spaces of each query while pgpool judges
# whether the query is a SELECT so that it can be load balanced.  This
# is useful for certain APIs such as DBI/DBD which is known to adding an
# extra leading white space.
ignore_leading_white_space = false

# If true, print all statements to the log.  Like the log_statement option
# to PostgreSQL, this allows for observing queries without engaging in full
# debugging.
log_statement = false

# If true, incoming connections will be printed to the log.
log_connections = false

# If true, hostname will be shown in ps status. Also shown in
# connection log if log_connections = true.
# Be warned that this feature will add overhead to look up hostname.
log_hostname = false

# if non 0, run in parallel query mode
parallel_mode = false

# if non 0, use query cache
enable_query_cache = false

#set pgpool2 hostname
pgpool2_hostname = 'tmsdb'

# system DB info
system_db_hostname = 'localhost'
system_db_port = 5432
system_db_dbname = 'pgpool'
system_db_schema = 'pgpool_catalog'
system_db_user = 'pgpool'
system_db_password = ''

# backend_hostname, backend_port, backend_weight
# here are examples
backend_hostname0 = '172.20.9.20'
backend_port0 = 5432
backend_weight0 = 1
#backend_hostname1 = '172.20.9.19'
#backend_port1 = 5432
#backend_weight1 = 1

# - HBA -

# If true, use pool_hba.conf for client authentication. In pgpool-II
# 1.1, the default value is false. The default value will be true in
# 1.2.
enable_pool_hba = false

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: multipart/alternative
Size: 0 bytes
Desc: not available
Url : http://pgfoundry.org/pipermail/pgpool-general/attachments/20090325/03a59b4d/attachment.bin 
-------------- next part --------------

No virus found in this outgoing message.
Checked by AVG - www.avg.com 
Version: 8.5.281 / Virus Database: 270.11.28/2022 - Release Date: 03/25/09 07:16:00