* pgpool: a language independent connection pool server for PostgreSQL
* written by Tatsuo Ishii
*
- * Copyright (c) 2003-2024 PgPool Global Development Group
+ * Copyright (c) 2003-2023 PgPool Global Development Group
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
/* save last query string for logging purpose */
strlcpy(query_string_buffer, contents, sizeof(query_string_buffer));
- /*
- * Check if extended query protocol message ended. If not, reject the
- * query and raise an error to terminate the session to avoid hanging up.
- */
- if (SL_MODE)
- {
- if (pool_is_doing_extended_query_message() ||
- pool_pending_message_head_message())
-
- ereport(FATAL,
- (errmsg("simple query \"%s\" arrived before ending an extended query message",
- query_string_buffer)));
- }
-
/* show ps status */
query_ps_status(contents, backend);
+++ /dev/null
-#!/usr/bin/env bash
-#-------------------------------------------------------------------
-# test script for that detach_false_primary could bring down all backends.
-# See [pgpool-hackers: 4431] for more details.
-#
-# It is possible that all DB nodes go down if detach_false_primary is enabled.
-# Story:
-# There are 3 watchdog nodes pgpool0, pgpool1 and pgpool2.
-# There are 2 DB nodes node0 and node1 (initially node 0 is primary).
-# follow_primary_command is disabled.
-# 1) Node 0 goes down at pgpool0 due to a network trouble. BUT actually
-# node 0 is alive.
-# 2) Node 0 goes down at pgpool1 due to a network trouble. BUT actually
-# node 0 is alive.
-# 3) Failover is triggered. Since pgpool0 and pgpool1 agree, node 0 is set to down.
-# node 1 is promoted.
-# 4) Before new status is synched with pgpool2, pgpool2's sr_check
-# finds that there are two primary nodes due to
-# #3. detach_false_primary is triggered and node 1 goes down.
-# 5) Now all backends are in down status.
-
-# wait for watchdog starting up by looking for "lifecheck started" in
-# the pgpool.log. argument: $log: absolute path to the pgpool.log.
-function wait_for_watchdog_startup
-{
- while :
- do
- grep "lifecheck started" $log >/dev/null
- if [ $? = 0 ];then
- break;
- fi
- sleep 1
- done
-}
-
-source $TESTLIBS
-TESTDIR=testdir
-PSQL=$PGBIN/psql
-PG_CTL=$PGBIN/pg_ctl
-export PGDATABASE=test
-
-rm -fr $TESTDIR
-mkdir $TESTDIR
-cd $TESTDIR
-
-version=`$PSQL --version|awk '{print $3}'`
-result=`echo "$version >= 9.6"|bc`
-if [ $result = 0 ];then
- echo "PostgreSQL version $version is 9.5 or before. Skipping test."
- exit 0
-fi
-
-# create 3 node pgpool with 2 backends.
-$WATCHDOG_SETUP -wn 3 -n 2
-
-# enable detach_false_primary and health_check_test. We need to
-# disable follow_primary_command, othewise node 0 goes down by
-# follow_primary_command and the test may not reveals the problem.
-# Also we set sr_check_period to very short so that
-# detach_false_primary is triggered before the new status is synched
-# by watchdog leader.
-for i in 0 1 2
-do
- echo "detach_false_primary = on" >> pgpool$i/etc/pgpool.conf
- echo "health_check_test = on" >> pgpool$i/etc/pgpool.conf
- echo "follow_primary_command = ''" >> pgpool$i/etc/pgpool.conf
- echo "sr_check_period = 1" >> pgpool$i/etc/pgpool.conf
-done
-
-cd pgpool0
-source ./bashrc.ports
-cd ..
-
-./startall
-
-echo -n "waiting for watchdog node 0 starting up... "
-log=pgpool0/log/pgpool.log
-wait_for_watchdog_startup $log
-echo "done."
-
-$PGPOOL_INSTALL_DIR/bin/pcp_watchdog_info -v -w -h localhost -p $PCP_PORT
-$PGPOOL_INSTALL_DIR/bin/pcp_node_info -h localhost -p $PCP_PORT
-
-# Let node 0 down at pgpool0
-echo "0 down" > pgpool0/log/backend_down_request
-# Let node 0 down at pgpool1
-echo "0 down" > pgpool1/log/backend_down_request
-
-# Wait up to 30 seconds before the problem (all nodes go down).
-# Observe that pgpool1 and pgpool2 print:
-# LOG: pgpool_worker_child: invalid node found 1
-# which means sr_check ran detach_false_primary but did not trigger failover:
-# LOG: do not detach invalid node 1 because I am not the leader or quorum does not exist
-for t in {1..30}
-do
- for i in 0 1 2
- do
- date
- echo "node info after failover at pgppol$i"
- cd pgpool$i
- source ./bashrc.ports
- cd ..
- $PGPOOL_INSTALL_DIR/bin/pcp_node_info -h localhost -p $PCP_PORT
- done
- # check whether all node down.
- n0=`$PGPOOL_INSTALL_DIR/bin/pcp_node_info -h localhost -p $PCP_PORT 0|awk '{print $5}'`
- n1=`$PGPOOL_INSTALL_DIR/bin/pcp_node_info -h localhost -p $PCP_PORT 1|awk '{print $5}'`
- if [ $n0 = "down" -a $n1 = "down" ];then
- echo "all nodes go down."
- ./shutdownall
- exit 1
- fi
- sleep 1
-done
-echo "test succeeded."
-
-./shutdownall
-
-exit 0
projects / pgpool2.git / commitdiff