diff --git a/heartbeat/pgsql b/heartbeat/pgsql index 511c23958..bdeed8df5 100755 --- a/heartbeat/pgsql +++ b/heartbeat/pgsql @@ -1,2072 +1,2072 @@ #!/bin/sh # # Description: Manages a PostgreSQL Server as an OCF High-Availability # resource # # Authors: Serge Dubrouski (sergeyfd@gmail.com) -- original RA # Florian Haas (florian@linbit.com) -- makeover # Takatoshi MATSUO (matsuo.tak@gmail.com) -- support replication # David Corlette (dcorlette@netiq.com) -- add support for non-standard library locations and non-standard port # # Copyright: 2006-2012 Serge Dubrouski # and other Linux-HA contributors # License: GNU General Public License (GPL) # ############################################################################### # Initialization: : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs # Use runuser if available for SELinux. if [ -x /sbin/runuser ]; then SU=runuser else SU=su fi # # Get PostgreSQL Configuration parameter # get_pgsql_param() { local param_name param_name=$1 perl_code="if (/^\s*$param_name[\s=]+\s*(.*)$/) { \$dir=\$1; \$dir =~ s/\s*\#.*//; \$dir =~ s/^'(\S*)'/\$1/; print \$dir;}" perl -ne "$perl_code" < $OCF_RESKEY_config } # Defaults OCF_RESKEY_pgctl_default=/usr/bin/pg_ctl OCF_RESKEY_psql_default=/usr/bin/psql OCF_RESKEY_pgdata_default=/var/lib/pgsql/data OCF_RESKEY_pgdba_default=postgres OCF_RESKEY_pghost_default="" OCF_RESKEY_pgport_default=5432 OCF_RESKEY_pglibs_default=/usr/lib OCF_RESKEY_start_opt_default="" OCF_RESKEY_ctl_opt_default="" OCF_RESKEY_pgdb_default=template1 OCF_RESKEY_logfile_default=/dev/null OCF_RESKEY_stop_escalate_default=30 OCF_RESKEY_monitor_user_default="" OCF_RESKEY_monitor_password_default="" OCF_RESKEY_monitor_sql_default="select now();" OCF_RESKEY_check_wal_receiver_default="false" # Defaults for replication OCF_RESKEY_rep_mode_default=none OCF_RESKEY_node_list_default="" OCF_RESKEY_restore_command_default="" OCF_RESKEY_archive_cleanup_command_default="" OCF_RESKEY_recovery_end_command_default="" OCF_RESKEY_master_ip_default="" OCF_RESKEY_repuser_default="postgres" OCF_RESKEY_primary_conninfo_opt_default="" OCF_RESKEY_restart_on_promote_default="false" OCF_RESKEY_tmpdir_default="/var/lib/pgsql/tmp" OCF_RESKEY_xlog_check_count_default="3" OCF_RESKEY_crm_attr_timeout_default="5" OCF_RESKEY_stop_escalate_in_slave_default=30 OCF_RESKEY_replication_slot_name_default="" : ${OCF_RESKEY_pgctl=${OCF_RESKEY_pgctl_default}} : ${OCF_RESKEY_psql=${OCF_RESKEY_psql_default}} : ${OCF_RESKEY_pgdata=${OCF_RESKEY_pgdata_default}} : ${OCF_RESKEY_pgdba=${OCF_RESKEY_pgdba_default}} : ${OCF_RESKEY_pghost=${OCF_RESKEY_pghost_default}} : ${OCF_RESKEY_pgport=${OCF_RESKEY_pgport_default}} : ${OCF_RESKEY_pglibs=${OCF_RESKEY_pglibs_default}} : ${OCF_RESKEY_config=${OCF_RESKEY_pgdata}/postgresql.conf} : ${OCF_RESKEY_start_opt=${OCF_RESKEY_start_opt_default}} : ${OCF_RESKEY_ctl_opt=${OCF_RESKEY_ctl_opt_default}} : ${OCF_RESKEY_pgdb=${OCF_RESKEY_pgdb_default}} : ${OCF_RESKEY_logfile=${OCF_RESKEY_logfile_default}} : ${OCF_RESKEY_stop_escalate=${OCF_RESKEY_stop_escalate_default}} : ${OCF_RESKEY_monitor_user=${OCF_RESKEY_monitor_user_default}} : ${OCF_RESKEY_monitor_password=${OCF_RESKEY_monitor_password_default}} : ${OCF_RESKEY_monitor_sql=${OCF_RESKEY_monitor_sql_default}} : ${OCF_RESKEY_check_wal_receiver=${OCF_RESKEY_check_wal_receiver_default}} # for replication : ${OCF_RESKEY_rep_mode=${OCF_RESKEY_rep_mode_default}} : ${OCF_RESKEY_node_list=${OCF_RESKEY_node_list_default}} : ${OCF_RESKEY_restore_command=${OCF_RESKEY_restore_command_default}} : ${OCF_RESKEY_archive_cleanup_command=${OCF_RESKEY_archive_cleanup_command_default}} : ${OCF_RESKEY_recovery_end_command=${OCF_RESKEY_recovery_end_command_default}} : ${OCF_RESKEY_master_ip=${OCF_RESKEY_master_ip_default}} : ${OCF_RESKEY_repuser=${OCF_RESKEY_repuser_default}} : ${OCF_RESKEY_primary_conninfo_opt=${OCF_RESKEY_primary_conninfo_opt_default}} : ${OCF_RESKEY_restart_on_promote=${OCF_RESKEY_restart_on_promote_default}} : ${OCF_RESKEY_tmpdir=${OCF_RESKEY_tmpdir_default}} : ${OCF_RESKEY_xlog_check_count=${OCF_RESKEY_xlog_check_count_default}} : ${OCF_RESKEY_crm_attr_timeout=${OCF_RESKEY_crm_attr_timeout_default}} : ${OCF_RESKEY_stop_escalate_in_slave=${OCF_RESKEY_stop_escalate_in_slave_default}} : ${OCF_RESKEY_replication_slot_name=${OCF_RESKEY_replication_slot_name_default}} usage() { cat < 1.0 Resource script for PostgreSQL. It manages a PostgreSQL as an HA resource. Manages a PostgreSQL database instance Path to pg_ctl command. pgctl Start options (-o start_opt in pg_ctl). "-i -p 5432" for example. start_opt Additional pg_ctl options (-w, -W etc..). ctl_opt Path to psql command. psql Path to PostgreSQL data directory. pgdata User that owns PostgreSQL. pgdba Hostname/IP address where PostgreSQL is listening pghost Port where PostgreSQL is listening pgport Custom location of the Postgres libraries. If not set, the standard location will be used. pglibs PostgreSQL user that pgsql RA will user for monitor operations. If it's not set pgdba user will be used. monitor_user Password for monitor user. monitor_password SQL script that will be used for monitor operations. monitor_sql Path to the PostgreSQL configuration file for the instance. Configuration file Database that will be used for monitoring. pgdb Path to PostgreSQL server log output file. logfile Unix socket directory for PostgreSQL. If you use PostgreSQL 9.3 or higher and define unix_socket_directories in the postgresql.conf, then you must set socketdir to determine which directory is used for psql command. socketdir Number of shutdown retries (using -m fast) before resorting to -m immediate stop escalation Replication mode may be set to "async" or "sync" or "slave". They require PostgreSQL 9.1 or later. Once set, "async" and "sync" require node_list, master_ip, and restore_command parameters,as well as configuring PostgreSQL for replication (in postgresql.conf and pg_hba.conf). "slave" means that RA only makes recovery.conf before starting to connect to primary which is running somewhere. It dosen't need master/slave setting. It requires master_ip restore_command parameters. rep_mode All node names. Please separate each node name with a space. This is required for replication. node list restore_command for recovery.conf. This is required for replication. restore_command archive_cleanup_command for recovery.conf. This is used for replication and is optional. archive_cleanup_command recovery_end_command for recovery.conf. This is used for replication and is optional. recovery_end_command Master's floating IP address to be connected from hot standby. This parameter is used for "primary_conninfo" in recovery.conf. This is required for replication. master ip User used to connect to the master server. This parameter is used for "primary_conninfo" in recovery.conf. This is required for replication. repuser primary_conninfo options of recovery.conf except host, port, user and application_name. This is optional for replication. primary_conninfo_opt If this is true, RA deletes recovery.conf and restarts PostgreSQL on promote to keep Timeline ID. It probably makes fail-over slower. It's recommended to set on-fail of promote up as fence. This is optional for replication. restart_on_promote Set this option when using replication slots. When the master node has 1 slave node,one replication slot would be created with the name "replication_slot_name". When the master node has 2 or more slave nodes,the replication slots would be created for each node, with the name adding the node name as postfix. For example, replication_slot_name is "sample" and 2 slaves which are "node_a" and "node_b" connect to their slots, the slots names are "sample_node_a" and "sample_node_b". pgsql RA doesn't monitor and delete the repliation slot. When the slave node has been disconnected in failure or the like, execute one of the following manually. Otherwise it may eventually cause a disk full because the master node will continue to accumulate the unsent WAL. 1. recover and reconnect the slave node to the master node as soon as possible. 2. delete the slot on the master node by following psql command. $ select pg_drop_replication_slot('replication_slot_name'); replication_slot_name Path to temporary directory. This is optional for replication. tmpdir Number of checks of xlog on monitor before promote. This is optional for replication. xlog check count The timeout of crm_attribute forever update command. Default value is 5 seconds. This is optional for replication. The timeout of crm_attribute forever update command. Number of shutdown retries (using -m fast) before resorting to -m immediate in slave state. This is optional for replication. stop escalation_in_slave If this is true, RA checks wal_receiver process on monitor and notifies its status using "(resource name)-receiver-status" attribute. It's useful for checking whether PostgreSQL (hot standby) connects to primary. The attribute shows status as "normal" or "normal (master)" or "ERROR". Note that if you configure PostgreSQL as master/slave resource, then wal receiver is not running in the master and the attribute shows status as "normal (master)" consistently because it is normal status. check_wal_receiver EOF } # # Run the given command in the Resource owner environment... # runasowner() { local quietrun="" local loglevel="-err" local var for var in 1 2 do case "$1" in "-q") quietrun="-q" shift 1;; "warn"|"err") loglevel="-$1" shift 1;; *) ;; esac done ocf_run $quietrun $loglevel $SU $OCF_RESKEY_pgdba -c "cd $OCF_RESKEY_pgdata; $*" } # # Shell escape # escape_string() { echo "$*" | sed -e "s/'/'\\\\''/g" } # # methods: What methods/operations do we support? # pgsql_methods() { cat </dev/null 2>&1" return $? fi # No PID file false } pgsql_wal_receiver_status() { local PID local receiver_parent_pids local pgsql_real_monitor_status=$1 PID=`head -n 1 $PIDFILE` receiver_parent_pids=`ps -ef | tr -s " " | grep "[w]al receiver process" | cut -d " " -f 3` if echo "$receiver_parent_pids" | grep -q -w "$PID" ; then attrd_updater -n "$PGSQL_WAL_RECEIVER_STATUS_ATTR" -v "normal" -q return 0 fi if [ $pgsql_real_monitor_status -eq "$OCF_RUNNING_MASTER" ]; then attrd_updater -n "$PGSQL_WAL_RECEIVER_STATUS_ATTR" -v "normal (master)" -q return 0 fi attrd_updater -n "$PGSQL_WAL_RECEIVER_STATUS_ATTR" -v "ERROR" -q ocf_log warn "wal receiver process is not running" return 1 } # # pgsql_real_monitor # pgsql_real_monitor() { local loglevel local rc local output # Set the log level of the error message loglevel=${1:-err} if ! pgsql_status then ocf_log info "PostgreSQL is down" return $OCF_NOT_RUNNING fi if is_replication; then #Check replication state output=`exec_sql "${CHECK_MS_SQL}"` rc=$? if [ $rc -ne 0 ]; then report_psql_error $rc $loglevel "Can't get PostgreSQL recovery status." return $OCF_ERR_GENERIC fi case "$output" in f) ocf_log debug "PostgreSQL is running as a primary." if [ "$OCF_RESKEY_monitor_sql" = "$OCF_RESKEY_monitor_sql_default" ]; then return $OCF_RUNNING_MASTER fi ;; t) ocf_log debug "PostgreSQL is running as a hot standby." return $OCF_SUCCESS;; *) ocf_exit_reason "$CHECK_MS_SQL output is $output" return $OCF_ERR_GENERIC;; esac fi OCF_RESKEY_monitor_sql=`escape_string "$OCF_RESKEY_monitor_sql"` runasowner -q $loglevel "$OCF_RESKEY_psql $psql_options \ -c '$OCF_RESKEY_monitor_sql'" rc=$? if [ $rc -ne 0 ]; then report_psql_error $rc $loglevel "PostgreSQL $OCF_RESKEY_pgdb isn't running." return $OCF_ERR_GENERIC fi if is_replication; then return $OCF_RUNNING_MASTER fi return $OCF_SUCCESS } pgsql_replication_monitor() { local rc rc=$1 if [ $rc -ne $OCF_SUCCESS -a $rc -ne "$OCF_RUNNING_MASTER" ]; then return $rc fi # If I am Master if [ $rc -eq $OCF_RUNNING_MASTER ]; then change_data_status "$NODENAME" "LATEST" change_pgsql_status "$NODENAME" "PRI" control_slave_status || return $OCF_ERR_GENERIC if [ "$RE_CONTROL_SLAVE" = "true" ]; then sleep 2 ocf_log info "re-controlling slave status." RE_CONTROL_SLAVE="none" control_slave_status || return $OCF_ERR_GENERIC fi return $rc fi # I can't get master node name from $OCF_RESKEY_CRM_meta_notify_master_uname on monitor, # so I will get master node name using crm_mon -n - print_crm_mon | tr -d "\t" | tr -d " " | grep -q "^${RESOURCE_NAME}[(:].*[):]Master" + print_crm_mon | tr -d "\t" | tr -d " " | grep -q "^${RESOURCE_NAME}[(:].*[):].*Master" if [ $? -ne 0 ] ; then # If I am Slave and Master is not exist ocf_log info "Master does not exist." change_pgsql_status "$NODENAME" "HS:alone" have_master_right if [ $? -eq 0 ]; then rm -f ${XLOG_NOTE_FILE}.* fi else output=`exec_with_retry 0 $CRM_ATTR_FOREVER -N "$NODENAME" \ -n "$PGSQL_DATA_STATUS_ATTR" -G -q` if [ "$output" = "DISCONNECT" ]; then change_pgsql_status "$NODENAME" "HS:alone" fi fi return $rc } #pgsql_monitor: pgsql_real_monitor() wrapper for replication pgsql_monitor() { local rc pgsql_real_monitor rc=$? if ocf_is_true ${OCF_RESKEY_check_wal_receiver}; then pgsql_wal_receiver_status $rc fi if ! is_replication; then return $rc else pgsql_replication_monitor $rc return $? fi } # pgsql_post_demote pgsql_post_demote() { DEMOTE_NODE=`echo $OCF_RESKEY_CRM_meta_notify_demote_uname | sed "s/ /\n/g" | head -1 | tr '[A-Z]' '[a-z]'` ocf_log debug "post-demote called. Demote uname is $DEMOTE_NODE" if [ "$DEMOTE_NODE" != "$NODENAME" ]; then if ! echo $OCF_RESKEY_CRM_meta_notify_master_uname | tr '[A-Z]' '[a-z]' | grep $NODENAME; then show_master_baseline change_pgsql_status "$NODENAME" "HS:alone" fi fi return $OCF_SUCCESS } pgsql_pre_promote() { local master_baseline local my_master_baseline local cmp_location local number_of_nodes # If my data is newer than new master's one, I fail my resource. PROMOTE_NODE=`echo $OCF_RESKEY_CRM_meta_notify_promote_uname | \ sed "s/ /\n/g" | head -1 | tr '[A-Z]' '[a-z]'` number_of_nodes=`echo $NODE_LIST | wc -w` if [ $number_of_nodes -ge 3 -a \ "$OCF_RESKEY_rep_mode" = "sync" -a \ "$PROMOTE_NODE" != "$NODENAME" ]; then master_baseline=`$CRM_ATTR_REBOOT -N "$PROMOTE_NODE" -n \ "$PGSQL_MASTER_BASELINE" -G -q 2>/dev/null` if [ $? -eq 0 ]; then my_master_baseline=`$CRM_ATTR_REBOOT -N "$NODENAME" -n \ "$PGSQL_MASTER_BASELINE" -G -q 2>/dev/null` # get older location cmp_location=`printf "$master_baseline\n$my_master_baseline\n" |\ sort | head -1` if [ "$cmp_location" != "$my_master_baseline" ]; then ocf_exit_reason "My data is newer than new master's one. New master's location : $master_baseline" exec_with_retry 0 $CRM_FAILCOUNT -r $OCF_RESOURCE_INSTANCE -U $NODENAME -v INFINITY return $OCF_ERR_GENERIC fi fi fi return $OCF_SUCCESS } pgsql_notify() { local type="${OCF_RESKEY_CRM_meta_notify_type}" local op="${OCF_RESKEY_CRM_meta_notify_operation}" local rc if ! is_replication; then return $OCF_SUCCESS fi ocf_log debug "notify: ${type} for ${op}" case $type in pre) case $op in promote) pgsql_pre_promote return $? ;; esac ;; post) case $op in promote) delete_xlog_location PROMOTE_NODE=`echo $OCF_RESKEY_CRM_meta_notify_promote_uname | \ sed "s/ /\n/g" | head -1 | tr '[A-Z]' '[a-z]'` if [ "$PROMOTE_NODE" != "$NODENAME" ]; then delete_master_baseline fi return $OCF_SUCCESS ;; demote) pgsql_post_demote return $? ;; start|stop) MASTER_NODE=`echo $OCF_RESKEY_CRM_meta_notify_master_uname | \ sed "s/ /\n/g" | head -1 | tr '[A-Z]' '[a-z]'` if [ "$NODENAME" = "$MASTER_NODE" ]; then control_slave_status fi return $OCF_SUCCESS ;; esac ;; esac return $OCF_SUCCESS } control_slave_status() { local rc local data_status local target local all_data_status local tmp_data_status local number_of_nodes all_data_status=`exec_sql "${CHECK_REPLICATION_STATE_SQL}"` rc=$? if [ $rc -eq 0 ]; then if [ -n "$all_data_status" ]; then all_data_status=`echo $all_data_status | sed "s/\n/ /g"` fi else report_psql_error $rc err "Can't get PostgreSQL replication status." return 1 fi number_of_nodes=`echo $NODE_LIST | wc -w` for target in $NODE_LIST; do if [ "$target" = "$NODENAME" ]; then continue fi data_status="DISCONNECT" if [ -n "$all_data_status" ]; then for tmp_data_status in $all_data_status; do if ! echo $tmp_data_status | grep -q "^${target}|"; then continue fi data_status=`echo $tmp_data_status | cut -d "|" -f 2,3` ocf_log debug "node_name and data_status is $tmp_data_status" break done fi case "$data_status" in "STREAMING|SYNC") change_data_status "$target" "$data_status" change_master_score "$target" "$CAN_PROMOTE" change_pgsql_status "$target" "HS:sync" ;; "STREAMING|ASYNC") change_data_status "$target" "$data_status" if [ "$OCF_RESKEY_rep_mode" = "sync" ]; then change_master_score "$target" "$CAN_NOT_PROMOTE" set_sync_mode "$target" else if [ $number_of_nodes -le 2 ]; then change_master_score "$target" "$CAN_PROMOTE" else # I can't determine which slave's data is newest in async mode. change_master_score "$target" "$CAN_NOT_PROMOTE" fi fi change_pgsql_status "$target" "HS:async" ;; "STREAMING|POTENTIAL") change_data_status "$target" "$data_status" change_master_score "$target" "$CAN_NOT_PROMOTE" change_pgsql_status "$target" "HS:potential" ;; "DISCONNECT") change_data_status "$target" "$data_status" change_master_score "$target" "$CAN_NOT_PROMOTE" if [ "$OCF_RESKEY_rep_mode" = "sync" ]; then set_async_mode "$target" fi ;; *) change_data_status "$target" "$data_status" change_master_score "$target" "$CAN_NOT_PROMOTE" if [ "$OCF_RESKEY_rep_mode" = "sync" ]; then set_async_mode "$target" fi change_pgsql_status "$target" "HS:connected" ;; esac done return 0 } have_master_right() { local old local new local output local data_status local node local mylocation local count local newestXlog local oldfile local newfile ocf_log debug "Checking if I have a master right." data_status=`$CRM_ATTR_FOREVER -N "$NODENAME" -n \ "$PGSQL_DATA_STATUS_ATTR" -G -q 2>/dev/null` if [ "$OCF_RESKEY_rep_mode" = "sync" ]; then if [ -n "$data_status" -a "$data_status" != "STREAMING|SYNC" -a \ "$data_status" != "LATEST" ]; then ocf_log warn "My data is out-of-date. status=$data_status" return 1 fi else if [ -n "$data_status" -a "$data_status" != "STREAMING|SYNC" -a \ "$data_status" != "STREAMING|ASYNC" -a \ "$data_status" != "LATEST" ]; then ocf_log warn "My data is out-of-date. status=$data_status" return 1 fi fi ocf_log info "My data status=$data_status." show_xlog_location if [ $? -ne 0 ]; then ocf_exit_reason "Failed to show my xlog location." exit $OCF_ERR_GENERIC fi old=0 for count in `seq $OCF_RESKEY_xlog_check_count`; do if [ -f ${XLOG_NOTE_FILE}.$count ]; then old=$count continue fi break done new=`expr $old + 1` # get xlog locations of all nodes for node in ${NODE_LIST}; do output=`$CRM_ATTR_REBOOT -N "$node" -n \ "$PGSQL_XLOG_LOC_NAME" -G -q 2>/dev/null` if [ $? -ne 0 ]; then ocf_log warn "Can't get $node xlog location." continue else ocf_log info "$node xlog location : $output" echo "$node $output" >> ${XLOG_NOTE_FILE}.${new} if [ "$node" = "$NODENAME" ]; then mylocation=$output fi fi done oldfile=`cat ${XLOG_NOTE_FILE}.${old} 2>/dev/null` newfile=`cat ${XLOG_NOTE_FILE}.${new} 2>/dev/null` if [ "$oldfile" != "$newfile" ]; then # reset counter rm -f ${XLOG_NOTE_FILE}.* printf "$newfile\n" > ${XLOG_NOTE_FILE}.0 return 1 fi if [ "$new" -ge "$OCF_RESKEY_xlog_check_count" ]; then newestXlog=`printf "$newfile\n" | sort -t " " -k 2,3 -r | \ head -1 | cut -d " " -f 2` if [ "$newestXlog" = "$mylocation" ]; then ocf_log info "I have a master right." exec_with_retry 5 $CRM_MASTER -v $PROMOTE_ME return 0 fi change_data_status "$NODENAME" "DISCONNECT" ocf_log info "I don't have correct master data." # reset counter rm -f ${XLOG_NOTE_FILE}.* printf "$newfile\n" > ${XLOG_NOTE_FILE}.0 fi return 1 } is_replication() { if [ "$OCF_RESKEY_rep_mode" != "none" -a "$OCF_RESKEY_rep_mode" != "slave" ]; then return 0 fi return 1 } use_replication_slot() { if [ -n "$OCF_RESKEY_replication_slot_name" ]; then return 0 fi return 1 } create_replication_slot_name() { local number_of_nodes=0 local target local replication_slot_name local replication_slot_name_list_tmp local replication_slot_name_list if [ -n "$NODE_LIST" ]; then number_of_nodes=`echo $NODE_LIST | wc -w` fi # If the number of nodes 2 or less, Master node has 1 or less Slave node. # The Master node should have 1 slot for the Slave, which is named "$OCF_RES_KEY_replication_slot_name". if [ $number_of_nodes -le 2 ]; then replication_slot_name_list="$OCF_RESKEY_replication_slot_name" # If the number of nodes 3 or more, the Master has some Slave nodes. # The Master node should have some slots equal to the number of Slaves, and # the Slave nodes connect to their dedicated slot on the Master. # To ensuring that the slots name are each unique, add postfix to $OCF_RESKEY_replication_slot. # The postfix is "_$target". else for target in $NODE_LIST do if [ "$target" != "$NODENAME" ]; then replication_slot_name="$OCF_RESKEY_replication_slot_name"_"$target" replication_slot_name_list_tmp="$replication_slot_name_list" replication_slot_name_list="$replication_slot_name_list_tmp $replication_slot_name" fi done fi echo $replication_slot_name_list } create_replication_slot() { local replication_slot_name local replication_slot_name_list local output local rc local CREATE_REPLICATION_SLOT_sql local DELETE_REPLICATION_SLOT_sql replication_slot_name_list=`create_replication_slot_name` ocf_log debug "replication slot names are $replication_slot_name_list." for replication_slot_name in $replication_slot_name_list do # If the same name slot is already exists, initialize(delete and create) the slot. if [ `check_replication_slot $replication_slot_name` = "1" ]; then DELETE_REPLICATION_SLOT_sql="SELECT pg_drop_replication_slot('$replication_slot_name');" output=`exec_sql "$DELETE_REPLICATION_SLOT_sql"` rc=$? if [ $rc -eq 0 ]; then ocf_log info "PostgreSQL delete the replication slot($replication_slot_name)." else ocf_exit_reason "$output" return $OCF_ERR_GENERIC fi fi CREATE_REPLICATION_SLOT_sql="SELECT pg_create_physical_replication_slot('$replication_slot_name');" output=`exec_sql "$CREATE_REPLICATION_SLOT_sql"` rc=$? if [ $rc -eq 0 ]; then ocf_log info "PostgreSQL creates the replication slot($replication_slot_name)." else ocf_exit_reason "$output" return $OCF_ERR_GENERIC fi done return 0 } # This function check the replication slot does exists. check_replication_slot(){ local replication_slot_name=$1 local output local CHECK_REPLICATION_SLOT_sql="SELECT count(*) FROM pg_replication_slots WHERE slot_name = '$replication_slot_name'" output=`exec_sql "$CHECK_REPLICATION_SLOT_sql"` echo "$output" } get_my_location() { local rc local output local replay_loc local receive_loc local output1 local output2 local log1 local log2 local newer_location output=`exec_sql "$CHECK_XLOG_LOC_SQL"` rc=$? if [ $rc -ne 0 ]; then report_psql_error $rc err "Can't get my xlog location." return 1 fi replay_loc=`echo $output | cut -d "|" -f 1` receive_loc=`echo $output | cut -d "|" -f 2` output1=`echo "$replay_loc" | cut -d "/" -f 1` output2=`echo "$replay_loc" | cut -d "/" -f 2` log1=`printf "%08s\n" $output1 | sed "s/ /0/g"` log2=`printf "%08s\n" $output2 | sed "s/ /0/g"` replay_loc="${log1}${log2}" output1=`echo "$receive_loc" | cut -d "/" -f 1` output2=`echo "$receive_loc" | cut -d "/" -f 2` log1=`printf "%08s\n" $output1 | sed "s/ /0/g"` log2=`printf "%08s\n" $output2 | sed "s/ /0/g"` receive_loc="${log1}${log2}" newer_location=`printf "$replay_loc\n$receive_loc" | sort -r | head -1` echo "$newer_location" return 0 } show_xlog_location() { local location location=`get_my_location` || return 1 exec_with_retry 0 $CRM_ATTR_REBOOT -N "$NODENAME" -n "$PGSQL_XLOG_LOC_NAME" -v "$location" } delete_xlog_location() { exec_with_retry 5 $CRM_ATTR_REBOOT -N "$NODENAME" -n "$PGSQL_XLOG_LOC_NAME" -D } show_master_baseline() { local rc local location location=`get_my_location` ocf_log info "My master baseline : $location." exec_with_retry 0 $CRM_ATTR_REBOOT -N "$NODENAME" -n "$PGSQL_MASTER_BASELINE" -v "$location" } delete_master_baseline() { exec_with_retry 5 $CRM_ATTR_REBOOT -N "$NODENAME" -n "$PGSQL_MASTER_BASELINE" -D } set_async_mode_all() { [ "$OCF_RESKEY_rep_mode" = "sync" ] || return 0 ocf_log info "Set all nodes into async mode." runasowner -q err "echo \"synchronous_standby_names = ''\" > \"$REP_MODE_CONF\"" if [ $? -ne 0 ]; then ocf_exit_reason "Can't set all nodes into async mode." return 1 fi return 0 } set_async_mode() { cat $REP_MODE_CONF | grep -q -e "[,' ]$1[,' ]" if [ $? -eq 0 ]; then ocf_log info "Setup $1 into async mode." runasowner -q err "echo \"synchronous_standby_names = ''\" > \"$REP_MODE_CONF\"" else ocf_log debug "$1 is already in async mode." return 0 fi exec_with_retry 0 reload_conf } set_sync_mode() { local sync_node_in_conf sync_node_in_conf=`cat $REP_MODE_CONF | cut -d "'" -f 2` if [ -n "$sync_node_in_conf" ]; then ocf_log debug "$sync_node_in_conf is already sync mode." else ocf_log info "Setup $1 into sync mode." runasowner -q err "echo \"synchronous_standby_names = '$1'\" > \"$REP_MODE_CONF\"" [ "$RE_CONTROL_SLAVE" = "false" ] && RE_CONTROL_SLAVE="true" exec_with_retry 0 reload_conf fi } reload_conf() { # Invoke pg_ctl runasowner "$OCF_RESKEY_pgctl -D $OCF_RESKEY_pgdata reload" if [ $? -eq 0 ]; then ocf_log info "Reload configuration file." else ocf_exit_reason "Can't reload configuration file." return 1 fi return 0 } user_recovery_conf() { local number_of_nodes # put archive_cleanup_command and recovery_end_command only when defined by user if [ -n "$OCF_RESKEY_archive_cleanup_command" ]; then echo "archive_cleanup_command = '${OCF_RESKEY_archive_cleanup_command}'" fi if [ -n "$OCF_RESKEY_recovery_end_command" ]; then echo "recovery_end_command = '${OCF_RESKEY_recovery_end_command}'" fi if use_replication_slot; then number_of_nodes=`echo $NODE_LIST | wc -w` if [ $number_of_nodes -le 2 ]; then echo "primary_slot_name = '${OCF_RESKEY_replication_slot_name}'" else echo "primary_slot_name = '${OCF_RESKEY_replication_slot_name}_$NODENAME'" fi fi } make_recovery_conf() { runasowner "touch $RECOVERY_CONF" if [ $? -ne 0 ]; then ocf_exit_reason "Can't create recovery.conf." return 1 fi cat > $RECOVERY_CONF <> $RECOVERY_CONF ocf_log debug "Created recovery.conf. host=${OCF_RESKEY_master_ip}, user=${OCF_RESKEY_repuser}" return 0 } # change pgsql-status. # arg1:node, arg2: value change_pgsql_status() { local output if ! is_node_online $1; then return 0 fi output=`$CRM_ATTR_REBOOT -N "$1" -n "$PGSQL_STATUS_ATTR" -G -q 2>/dev/null` if [ "$output" != "$2" ]; then # If slave's disk is broken, RA cannot read PID file # and misjudges the PostgreSQL as down while it is running. # It causes overwriting of pgsql-status by Master because replication is still connected. if [ "$output" = "STOP" -o "$output" = "UNKNOWN" ]; then if [ "$1" != "$NODENAME" ]; then ocf_log warn "Changing $PGSQL_STATUS_ATTR on $1 : $output->$2 by $NODENAME is prohibited." return 0 fi fi ocf_log info "Changing $PGSQL_STATUS_ATTR on $1 : $output->$2." exec_with_retry 0 $CRM_ATTR_REBOOT -N "$1" -n "$PGSQL_STATUS_ATTR" -v "$2" fi return 0 } # change pgsql-data-status. # arg1:node, arg2: value change_data_status() { local output if ! node_exist $1; then return 0 fi while : do output=`$CRM_ATTR_FOREVER -N "$1" -n "$PGSQL_DATA_STATUS_ATTR" -G -q 2>/dev/null` if [ "$output" != "$2" ]; then ocf_log info "Changing $PGSQL_DATA_STATUS_ATTR on $1 : $output->$2." exec_with_retry 0 exec_with_timeout 0 "$CRM_ATTR_FOREVER" -N $1 -n $PGSQL_DATA_STATUS_ATTR -v "$2" else break fi done return 0 } # set master-score # arg1:node, arg2: score, arg3: resoure set_master_score() { local current_score current_score=`$CRM_ATTR_REBOOT -N "$1" -n "master-$3" -G -q 2>/dev/null` if [ -n "$current_score" -a "$current_score" != "$2" ]; then ocf_log info "Changing $3 master score on $1 : $current_score->$2." exec_with_retry 0 $CRM_ATTR_REBOOT -N "$1" -n "master-$3" -v "$2" fi return 0 } # change master-score # arg1:node, arg2: score change_master_score() { local instance if ! is_node_online $1; then return 0 fi if echo $OCF_RESOURCE_INSTANCE | grep -q ":"; then # If Pacemaker version is 1.0.x instance=0 while : do if [ "$instance" -ge "$OCF_RESKEY_CRM_meta_clone_max" ]; then break fi if [ "${RESOURCE_NAME}:${instance}" = "$OCF_RESOURCE_INSTANCE" ]; then instance=`expr $instance + 1` continue fi set_master_score $1 $2 "${RESOURCE_NAME}:${instance}" || return 1 instance=`expr $instance + 1` done else # If globally-unique=false and Pacemaker version is 1.1.8 or higher # Master/Slave resource has no instance number set_master_score $1 $2 ${RESOURCE_NAME} || return 1 fi return 0 } report_psql_error() { local rc local loglevel local message rc=$1 loglevel=${2:-err} message="$3" ocf_log $loglevel "$message rc=$rc" if [ $rc -eq 1 ]; then ocf_exit_reason "Fatal error (out of memory, file not found, etc.) occurred while executing the psql command." elif [ $rc -eq 2 ]; then ocf_log $loglevel "Connection error (connection to the server went bad and the session was not interactive) occurred while executing the psql command." elif [ $rc -eq 3 ]; then ocf_exit_reason "Script error (the variable ON_ERROR_STOP was set) occurred while executing the psql command." fi } # # timeout management function # arg1 timeout >= 0 (if arg1 is 0, OCF_RESKEY_crm_attr_timeout is used.) # arg2 : command # arg3 : command's args exec_with_timeout() { local func_pid local count=$OCF_RESKEY_crm_attr_timeout local rc if [ "$1" -ne 0 ]; then count=$1 fi shift $* & func_pid=$! sleep .1 while kill -s 0 $func_pid >/dev/null 2>&1; do sleep 1 count=`expr $count - 1` if [ $count -le 0 ]; then ocf_exit_reason "\"$*\" (pid=$func_pid) timed out." kill -s 9 $func_pid >/dev/null 2>&1 return 1 fi ocf_log info "Waiting($count). \"$*\" (pid=$func_pid)." done wait $func_pid } # retry command when command doesn't return 0 # arg1 : count >= 0 (if arg1 is 0, it retries command in infinitum(1day)) # arg2..argN : command and args exec_with_retry() { local count="86400" local output local rc if [ "$1" -ne 0 ]; then count=$1 fi shift while [ $count -gt 0 ]; do output=`$*` rc=$? if [ $rc -ne 0 ]; then ocf_log warn "Retrying(remain $count). \"$*\" failed. rc=$rc. stdout=\"$output\"." count=`expr $count - 1` sleep 1 else printf "${output}" return 0 fi done ocf_exit_reason "giving up executing \"$*\"" return $rc } is_node_online() { print_crm_mon | tr '[A-Z]' '[a-z]' | grep -e "^node $1 " -e "^node $1:" | grep -q -v "offline" } node_exist() { print_crm_mon | tr '[A-Z]' '[a-z]' | grep -q "^node $1" } check_binary2() { if ! have_binary "$1"; then ocf_exit_reason "Setup problem: couldn't find command: $1" return 1 fi return 0 } check_config() { local rc=0 if [ ! -f "$1" ]; then if ocf_is_probe; then ocf_log info "Configuration file is $1 not readable during probe." rc=1 else ocf_exit_reason "Configuration file $1 doesn't exist" rc=2 fi fi return $rc } # Validate most critical parameters pgsql_validate_all() { local version local check_config_rc local rep_mode_string local socket_directories version=`cat $OCF_RESKEY_pgdata/PG_VERSION` if ! check_binary2 "$OCF_RESKEY_pgctl" || ! check_binary2 "$OCF_RESKEY_psql"; then return $OCF_ERR_INSTALLED fi check_config "$OCF_RESKEY_config" check_config_rc=$? [ $check_config_rc -eq 2 ] && return $OCF_ERR_INSTALLED if [ $check_config_rc -eq 0 ]; then ocf_version_cmp "$version" "9.3" if [ $? -eq 0 ]; then : ${OCF_RESKEY_socketdir=`get_pgsql_param unix_socket_directory`} else # unix_socket_directories is used by PostgreSQL 9.3 or higher. socket_directories=`get_pgsql_param unix_socket_directories` if [ -n "$socket_directories" ]; then # unix_socket_directories may have multiple socket directories and the pgsql RA can not know which directory is used for psql command. # Therefore, the user must set OCF_RESKEY_socketdir explicitly. if [ -z "$OCF_RESKEY_socketdir" ]; then ocf_log err "In PostgreSQL 9.3 or higher, socketdir can't be empty if you define unix_socket_directories in the postgresql.conf." return $OCF_ERR_CONFIGURED fi fi fi fi getent passwd $OCF_RESKEY_pgdba >/dev/null 2>&1 if [ ! $? -eq 0 ]; then ocf_exit_reason "User $OCF_RESKEY_pgdba doesn't exist"; return $OCF_ERR_INSTALLED; fi if ocf_is_probe; then ocf_log info "Don't check $OCF_RESKEY_pgdata during probe" else if ! runasowner "test -w $OCF_RESKEY_pgdata"; then ocf_exit_reason "Directory $OCF_RESKEY_pgdata is not writable by $OCF_RESKEY_pgdba" return $OCF_ERR_PERM; fi fi if [ -n "$OCF_RESKEY_monitor_user" -a ! -n "$OCF_RESKEY_monitor_password" ] then ocf_exit_reason "monitor password can't be empty" return $OCF_ERR_CONFIGURED fi if [ ! -n "$OCF_RESKEY_monitor_user" -a -n "$OCF_RESKEY_monitor_password" ] then ocf_exit_reason "monitor_user has to be set if monitor_password is set" return $OCF_ERR_CONFIGURED fi if is_replication || [ "$OCF_RESKEY_rep_mode" = "slave" ]; then if [ `printf "$version\n9.1" | sort -n | head -1` != "9.1" ]; then ocf_exit_reason "Replication mode needs PostgreSQL 9.1 or higher." return $OCF_ERR_INSTALLED fi if [ ! -n "$OCF_RESKEY_master_ip" ]; then ocf_exit_reason "master_ip can't be empty." return $OCF_ERR_CONFIGURED fi fi if is_replication; then if ! ocf_is_ms; then ocf_exit_reason "Replication(rep_mode=async or sync) requires Master/Slave configuration." return $OCF_ERR_CONFIGURED fi if [ ! "$OCF_RESKEY_rep_mode" = "sync" -a ! "$OCF_RESKEY_rep_mode" = "async" ]; then ocf_exit_reason "Invalid rep_mode : $OCF_RESKEY_rep_mode" return $OCF_ERR_CONFIGURED fi if [ ! -n "$NODE_LIST" ]; then ocf_exit_reason "node_list can't be empty." return $OCF_ERR_CONFIGURED fi if [ $check_config_rc -eq 0 ]; then rep_mode_string="include '$REP_MODE_CONF' # added by pgsql RA" if [ "$OCF_RESKEY_rep_mode" = "sync" ]; then if ! grep -q "$rep_mode_string" $OCF_RESKEY_config; then ocf_log info "adding include directive into $OCF_RESKEY_config" echo "$rep_mode_string" >> $OCF_RESKEY_config fi else if grep -q "$rep_mode_string" $OCF_RESKEY_config; then ocf_log info "deleting include directive from $OCF_RESKEY_config" rep_mode_string=`echo $rep_mode_string | sed -e 's|/|\\\\/|g'` sed -i "/$rep_mode_string/d" $OCF_RESKEY_config fi fi fi if ! mkdir -p $OCF_RESKEY_tmpdir || ! chown $OCF_RESKEY_pgdba $OCF_RESKEY_tmpdir || ! chmod 700 $OCF_RESKEY_tmpdir; then ocf_exit_reason "Can't create directory $OCF_RESKEY_tmpdir or it is not readable by $OCF_RESKEY_pgdba" return $OCF_ERR_PERM fi fi if [ "$OCF_RESKEY_rep_mode" = "slave" ]; then if ocf_is_ms; then ocf_exit_reason "Replication(rep_mode=slave) does not support Master/Slave configuration." return $OCF_ERR_CONFIGURED fi fi if use_replication_slot; then ocf_version_cmp "$version" "9.4" if [ $? -eq 0 -o $? -eq 3 ]; then ocf_exit_reason "Replication slot needs PostgreSQL 9.4 or higher." return $OCF_ERR_CONFIGURED fi fi return $OCF_SUCCESS } # # Check if we need to create a log file # check_log_file() { if [ ! -f "$1" ] then touch $1 > /dev/null 2>&1 chown $OCF_RESKEY_pgdba:`getent passwd $OCF_RESKEY_pgdba | cut -d ":" -f 4` $1 fi #Check if $OCF_RESKEY_pgdba can write to the log file if ! runasowner "test -w $1" then return 1 fi return 0 } # # Check socket directory # check_socket_dir() { if [ ! -d "$OCF_RESKEY_socketdir" ]; then if ! mkdir "$OCF_RESKEY_socketdir"; then ocf_exit_reason "Can't create directory $OCF_RESKEY_socketdir" exit $OCF_ERR_PERM fi if ! chown $OCF_RESKEY_pgdba:`getent passwd \ $OCF_RESKEY_pgdba | cut -d ":" -f 4` "$OCF_RESKEY_socketdir" then ocf_exit_reason "Can't change ownership for $OCF_RESKEY_socketdir" exit $OCF_ERR_PERM fi if ! chmod 2775 "$OCF_RESKEY_socketdir"; then ocf_exit_reason "Can't change permissions for $OCF_RESKEY_socketdir" exit $OCF_ERR_PERM fi else if ! runasowner "touch $OCF_RESKEY_socketdir/test.$$"; then ocf_exit_reason "$OCF_RESKEY_pgdba can't create files in $OCF_RESKEY_socketdir" exit $OCF_ERR_PERM fi rm $OCF_RESKEY_socketdir/test.$$ fi } print_crm_mon() { if [ -z "$CRM_MON_OUTPUT" ]; then CRM_MON_OUTPUT=`exec_with_retry 0 crm_mon -n1` fi printf "${CRM_MON_OUTPUT}\n" } # # 'main' starts here... # if [ $# -ne 1 ] then usage exit $OCF_ERR_GENERIC fi PIDFILE=${OCF_RESKEY_pgdata}/postmaster.pid BACKUPLABEL=${OCF_RESKEY_pgdata}/backup_label RESOURCE_NAME=`echo $OCF_RESOURCE_INSTANCE | cut -d ":" -f 1` PGSQL_WAL_RECEIVER_STATUS_ATTR="${RESOURCE_NAME}-receiver-status" RECOVERY_CONF=${OCF_RESKEY_pgdata}/recovery.conf NODENAME=$(ocf_local_nodename | tr '[A-Z]' '[a-z]') if is_replication; then REP_MODE_CONF=${OCF_RESKEY_tmpdir}/rep_mode.conf PGSQL_LOCK=${OCF_RESKEY_tmpdir}/PGSQL.lock XLOG_NOTE_FILE=${OCF_RESKEY_tmpdir}/xlog_note CRM_MASTER="${HA_SBIN_DIR}/crm_master -l reboot" CRM_ATTR_REBOOT="${HA_SBIN_DIR}/crm_attribute -l reboot" CRM_ATTR_FOREVER="${HA_SBIN_DIR}/crm_attribute -l forever" CRM_FAILCOUNT="${HA_SBIN_DIR}/crm_failcount" CAN_NOT_PROMOTE="-INFINITY" CAN_PROMOTE="100" PROMOTE_ME="1000" CHECK_MS_SQL="select pg_is_in_recovery()" CHECK_XLOG_LOC_SQL="select pg_last_xlog_replay_location(),pg_last_xlog_receive_location()" CHECK_REPLICATION_STATE_SQL="select application_name,upper(state),upper(sync_state) from pg_stat_replication" PGSQL_STATUS_ATTR="${RESOURCE_NAME}-status" PGSQL_DATA_STATUS_ATTR="${RESOURCE_NAME}-data-status" PGSQL_XLOG_LOC_NAME="${RESOURCE_NAME}-xlog-loc" PGSQL_MASTER_BASELINE="${RESOURCE_NAME}-master-baseline" NODE_LIST=`echo $OCF_RESKEY_node_list | tr '[A-Z]' '[a-z]'` RE_CONTROL_SLAVE="false" fi case "$1" in methods) pgsql_methods exit $?;; meta-data) meta_data exit $OCF_SUCCESS;; esac pgsql_validate_all rc=$? [ "$1" = "validate-all" ] && exit $rc if [ $rc -ne 0 ] then case "$1" in stop) if is_replication; then change_pgsql_status "$NODENAME" "UNKNOWN" fi exit $OCF_SUCCESS;; monitor) exit $OCF_NOT_RUNNING;; status) exit $OCF_NOT_RUNNING;; *) exit $rc;; esac fi US=`id -u -n` if [ $US != root -a $US != $OCF_RESKEY_pgdba ] then ocf_exit_reason "$0 must be run as root or $OCF_RESKEY_pgdba" exit $OCF_ERR_GENERIC fi # make psql command options if [ -n "$OCF_RESKEY_monitor_user" ]; then PGUSER=$OCF_RESKEY_monitor_user; export PGUSER PGPASSWORD=$OCF_RESKEY_monitor_password; export PGPASSWORD psql_options="-p $OCF_RESKEY_pgport $OCF_RESKEY_pgdb" else psql_options="-p $OCF_RESKEY_pgport -U $OCF_RESKEY_pgdba $OCF_RESKEY_pgdb" fi if [ -n "$OCF_RESKEY_pghost" ]; then psql_options="$psql_options -h $OCF_RESKEY_pghost" else if [ -n "$OCF_RESKEY_socketdir" ]; then psql_options="$psql_options -h $OCF_RESKEY_socketdir" fi fi if [ -n "$OCF_RESKEY_pgport" ]; then export PGPORT=$OCF_RESKEY_pgport fi if [ -n "$OCF_RESKEY_pglibs" ]; then if [ -n "$LD_LIBRARY_PATH" ]; then export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OCF_RESKEY_pglibs else export LD_LIBRARY_PATH=$OCF_RESKEY_pglibs fi fi # What kind of method was invoked? case "$1" in status) if pgsql_status then ocf_log info "PostgreSQL is up" exit $OCF_SUCCESS else ocf_log info "PostgreSQL is down" exit $OCF_NOT_RUNNING fi;; monitor) pgsql_monitor exit $?;; start) pgsql_start exit $?;; promote) pgsql_promote exit $?;; demote) pgsql_demote exit $?;; notify) pgsql_notify exit $?;; stop) pgsql_stop exit $?;; *) exit $OCF_ERR_UNIMPLEMENTED;; esac