This file is indexed.

/usr/lib/ocf/resource.d/heartbeat/pgsql is in resource-agents 1:3.9.2-5ubuntu4.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/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
#
# Copyright:    2006-2010 Serge Dubrouski <sergeyfd@gmail.com>
#                         and other Linux-HA contributors
# License:      GNU General Public License (GPL)
#
###############################################################################
# Initialization:

: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs

#
# Get PostgreSQL Configuration parameter
#
get_pgsql_param() {
    local config_file
    local param_name

    param_name=$1
 
    #Check that config file exists 
    if [ -n "$OCF_RESKEY_config" ]; then
        config=$OCF_RESKEY_config
    else
        config=$OCF_RESKEY_pgdata/postgresql.conf
    fi

    check_config "$config"
    [ $? -eq 0 ] || return

    perl_code="if (/^\s*$param_name[\s=]+\s*(.*)$/) {
       \$dir=\$1;
       \$dir =~ s/\s*\#.*//;
       \$dir =~ s/^'(\S*)'/\$1/;
       print \$dir;}"

    perl -ne "$perl_code" < $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_config_default=""
OCF_RESKEY_start_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();"

: ${OCF_RESKEY_pgctl=${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}}
: ${OCF_RESKEY_config=${OCF_RESKEY_config_default}}
: ${OCF_RESKEY_start_opt=${OCF_RESKEY_start_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}}

usage() {
    cat <<EOF
	usage: $0 start|stop|status|monitor|meta-data|validate-all|methods

	$0 manages a PostgreSQL Server as an HA resource.

        The 'start' operation starts the PostgreSQL server.
        The 'stop' operation stops the PostgreSQL server.
        The 'status' operation reports whether the PostgreSQL is up.
        The 'monitor' operation reports whether the PostgreSQL is running.
        The 'validate-all' operation reports whether the parameters are valid.
        The 'methods' operation reports on the methods $0 supports.
EOF
  return $OCF_ERR_ARGS
}

meta_data() {
	cat <<EOF
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="pgsql">
<version>1.0</version>

<longdesc lang="en">
Resource script for PostgreSQL. It manages a PostgreSQL as an HA resource.
</longdesc>
<shortdesc lang="en">Manages a PostgreSQL database instance</shortdesc>

<parameters>
<parameter name="pgctl" unique="0" required="0">
<longdesc lang="en">
Path to pg_ctl command.
</longdesc>
<shortdesc lang="en">pgctl</shortdesc>
<content type="string" default="${OCF_RESKEY_pgctl_default}" />
</parameter>

<parameter name="start_opt" unique="0" required="0">
<longdesc lang="en">
Start options (-o start_opt in pg_ctl). "-i -p 5432" for example.
</longdesc>
<shortdesc lang="en">start_opt</shortdesc>
<content type="string" default="${OCF_RESKEY_start_opt_default}" />

</parameter>
<parameter name="ctl_opt" unique="0" required="0">
<longdesc lang="en">
Additional pg_ctl options (-w, -W etc..).
</longdesc>
<shortdesc lang="en">ctl_opt</shortdesc>
<content type="string" default="${OCF_RESKEY_ctl_opt_default}" />
</parameter>

<parameter name="psql" unique="0" required="0">
<longdesc lang="en">
Path to psql command.
</longdesc>
<shortdesc lang="en">psql</shortdesc>
<content type="string" default="${OCF_RESKEY_psql_default}" />
</parameter>

<parameter name="pgdata" unique="0" required="0">
<longdesc lang="en">
Path to PostgreSQL data directory.
</longdesc>
<shortdesc lang="en">pgdata</shortdesc>
<content type="string" default="${OCF_RESKEY_pgdata_default}" />
</parameter>

<parameter name="pgdba" unique="0" required="0">
<longdesc lang="en">
User that owns PostgreSQL.
</longdesc>
<shortdesc lang="en">pgdba</shortdesc>
<content type="string" default="${OCF_RESKEY_pgdba_default}" />
</parameter>

<parameter name="pghost" unique="0" required="0">
<longdesc lang="en">
Hostname/IP address where PostgreSQL is listening
</longdesc>
<shortdesc lang="en">pghost</shortdesc>
<content type="string" default="${OCF_RESKEY_pghost_default}" />
</parameter>

<parameter name="pgport" unique="0" required="0">
<longdesc lang="en">
Port where PostgreSQL is listening
</longdesc>
<shortdesc lang="en">pgport</shortdesc>
<content type="integer" default="${OCF_RESKEY_pgport_default}" />
</parameter>

<parameter name="monitor_user" unique="0" required="0">
<longdesc lang="en">
PostgreSQL user that pgsql RA will user for monitor operations. If it's not set
pgdba user will be used.
</longdesc>
<shortdesc lang="en">monitor_user</shortdesc>
<content type="string" default="${OCF_RESKEY_monitor_user_default}" />
</parameter>

<parameter name="monitor_password" unique="0" required="0">
<longdesc lang="en">
Password for monitor user.
</longdesc>
<shortdesc lang="en">monitor_password</shortdesc>
<content type="string" default="${OCF_RESKEY_monitor_password_default}" />
</parameter>

<parameter name="monitor_sql" unique="0" required="0">
<longdesc lang="en">
SQL script that will be used for monitor operations.
</longdesc>
<shortdesc lang="en">monitor_sql</shortdesc>
<content type="string" default="${OCF_RESKEY_monitor_sql_default}" />
</parameter>


<parameter name="config" unique="0" required="0">
<longdesc lang="en">
Path to the PostgreSQL configuration file for the instance
</longdesc>
<shortdesc lang="en">Configuration file</shortdesc>
<content type="integer" default="${OCF_RESKEY_config_default}" />
</parameter>

<parameter name="pgdb" unique="0" required="0">
<longdesc lang="en">
Database that will be used for monitoring.
</longdesc>
<shortdesc lang="en">pgdb</shortdesc>
<content type="string" default="${OCF_RESKEY_pgdb_default}" />
</parameter>

<parameter name="logfile" unique="0" required="0">
<longdesc lang="en">
Path to PostgreSQL server log output file.
</longdesc>
<shortdesc lang="en">logfile</shortdesc>
<content type="string" default="${OCF_RESKEY_logfile_default}" />
</parameter>

<parameter name="socketdir" unique="0" required="0">
<longdesc lang="en">
Unix socket directory for PostgeSQL
</longdesc>
<shortdesc lang="en">socketdir</shortdesc>
<content type="string" default="" />
</parameter>

<parameter name="stop_escalate" unique="0" required="0">
<longdesc lang="en">
Number of shutdown retries (using -m fast) before resorting to -m immediate
</longdesc>
<shortdesc lang="en">stop escalation</shortdesc>
<content type="integer" default="${OCF_RESKEY_stop_escalation}" />
</parameter>
</parameters>

<actions>
<action name="start" timeout="120" />
<action name="stop" timeout="120" />
<action name="status" timeout="60" />
<action name="monitor" depth="0" timeout="30" interval="30"/>
<action name="meta-data" timeout="5" />
<action name="validate-all" timeout="5" />
<action name="methods" timeout="5" />
</actions>
</resource-agent>
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 <<EOF
	start
	stop
	status
	monitor
	methods
	meta-data
	validate-all
EOF
}


#pgsql_start: Starts PostgreSQL
pgsql_start() {
    local pgctl_options
    local postgres_options
    local rc

    if pgsql_status; then
        ocf_log info "PostgreSQL is already running. PID=`cat $PIDFILE`"
        return $OCF_SUCCESS
    fi

    # Remove postmaster.pid if it exists
    rm -f $PIDFILE

    # Remove backup_label if it exists
    if [ -f $BACKUPLABEL ]; then
	ocf_log info "Removing $BACKUPLABEL. The previous backup might have failed."
	rm -f $BACKUPLABEL
    fi

    # Check if we need to create a log file
    if ! check_log_file $OCF_RESKEY_logfile
    then
        ocf_log err "PostgreSQL can't write to the log file: $OCF_RESKEY_logfile"
	return $OCF_ERR_PERM
    fi

    # Check socket directory
    if [ -n "$OCF_RESKEY_socketdir" ]
    then
        check_socket_dir
    fi

    # Set options passed to pg_ctl
    pgctl_options="$OCF_RESKEY_ctl_opt -D $OCF_RESKEY_pgdata -l $OCF_RESKEY_logfile"

    # Set options passed to the PostgreSQL server process
    postgres_options=""
    if [ -n "$OCF_RESKEY_config" ]; then
	postgres_options="$postgres_options -c config_file=${OCF_RESKEY_config}"
    fi
    if [ -n "$OCF_RESKEY_pghost" ]; then
	postgres_options="$postgres_options -h $OCF_RESKEY_pghost"
    fi
    if [ -n "$OCF_RESKEY_start_opt" ]; then
	postgres_options="$postgres_options $OCF_RESKEY_start_opt"
    fi

    # Tack pass-through options onto pg_ctl options
    if [ -n "$postgres_options" ]; then
	pgctl_options="$pgctl_options -o '$postgres_options'"
    fi

    # Invoke pg_ctl
    runasowner "$OCF_RESKEY_pgctl $pgctl_options start"

    if [ $? -eq 0 ]; then
	# Probably started.....
        ocf_log info "PostgreSQL start command sent."
    else
	ocf_log err "Can't start PostgreSQL."
        return $OCF_ERR_GENERIC
    fi

    while :
    do
        pgsql_monitor warn
        rc=$?
        if [ $rc -eq 0 ]; then
            break;
        fi
        sleep 1
	ocf_log debug "PostgreSQL still hasn't started yet. Waiting..."
    done
    ocf_log info "PostgreSQL is started."

    return $OCF_SUCCESS
}

#pgsql_stop: Stop PostgreSQL
pgsql_stop() {
    local rc

    if ! pgsql_status
    then
        #Already stopped
        return $OCF_SUCCESS
    fi

    # Stop PostgreSQL, do not wait for clients to disconnect
    runasowner "$OCF_RESKEY_pgctl -D $OCF_RESKEY_pgdata stop -m fast"

    # stop waiting
    count=0
    while [ $count -lt $OCF_RESKEY_stop_escalate ]
    do
        if ! pgsql_status
        then
            #PostgreSQL stopped
            break;
        fi
        count=`expr $count + 1`
        sleep 1
    done

    if pgsql_status
    then
       #PostgreSQL is still up. Use another shutdown mode.
       ocf_log info "PostgreSQL failed to stop after ${OCF_RESKEY_stop_escalate}s using -m fast. Trying -m immediate..."
       runasowner "$OCF_RESKEY_pgctl -D $OCF_RESKEY_pgdata stop -m immediate"
    fi

    while :
    do
        pgsql_monitor
        rc=$?
        if [ $rc -eq $OCF_NOT_RUNNING ]; then
            # An unnecessary debug log is prevented.
            break;
        fi
	sleep 1
	ocf_log debug "PostgreSQL still hasn't stopped yet. Waiting..."
    done

    # Remove postmaster.pid if it exists
    rm -f $PIDFILE

    return $OCF_SUCCESS
}

#
# pgsql_status: is PostgreSQL up?
#

pgsql_status() {
     if [ -f $PIDFILE ]
     then
         PID=`head -n 1 $PIDFILE`
         runasowner "kill -s 0 $PID >/dev/null 2>&1"
         return $?
     fi

     # No PID file
     false
}

#
# pgsql_monitor
#

pgsql_monitor() {
    local loglevel
    local psql_options
    local rc

    # 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 [ -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

    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
	ocf_log $loglevel "PostgreSQL $OCF_RESKEY_pgdb isn't running"
        if [ $rc -eq 1 ]; then
            ocf_log err "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_log err "Script error (the variable ON_ERROR_STOP was set) occurred while executing the psql command."
        fi
	return $OCF_ERR_GENERIC
    fi

    return $OCF_SUCCESS
}

check_binary2() {
    if ! have_binary "$1"; then
        ocf_log err "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 $1 not readable during probe."
           rc=1
        else
           ocf_log err "Configuration file $1 doesn't exist"
           rc=2
        fi
    fi

    return $rc
}

# Validate most critical parameters
pgsql_validate_all() {
    if ! check_binary2 "$OCF_RESKEY_pgctl" || 
       ! check_binary2 "$OCF_RESKEY_psql"; then
        return $OCF_ERR_INSTALLED
    fi

    if [ -n "$OCF_RESKEY_config" -a ! -f "$OCF_RESKEY_config" ]; then
       check_config "$OCF_RESKEY_config"
       [ $? -eq 2 ] && return $OCF_ERR_INSTALLED
    fi

    getent passwd $OCF_RESKEY_pgdba >/dev/null 2>&1
    if [ ! $? -eq 0 ]; then
        ocf_log err "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_log err "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_log err "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_log err "monitor_user has to be set if monitor_password is set"
        return $OCF_ERR_CONFIGURED
    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_log err "Cannot 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_log err "Cannot change ownership for $OCF_RESKEY_socketdir"
            exit $OCF_ERR_PERM
        fi

        if ! chmod 2775 "$OCF_RESKEY_socketdir"; then
            ocf_log err "Cannot change permissions for $OCF_RESKEY_socketdir"
            exit $OCF_ERR_PERM
        fi
    else
        if ! runasowner "touch $OCF_RESKEY_socketdir/test.$$"; then
            ocf_log err "$OCF_RESKEY_pgdba cannot create files in $OCF_RESKEY_socketdir"
            exit $OCF_ERR_PERM
        fi
        rm $OCF_RESKEY_socketdir/test.$$
    fi
}

#
#   '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

case "$1" in
    methods)    pgsql_methods
                exit $?;;

    meta-data)  meta_data
                exit $OCF_SUCCESS;;
esac

# $OCF_RESKEY_pgdata has to be initialized at this momemnt
: ${OCF_RESKEY_socketdir=`get_pgsql_param unix_socket_directory`}

pgsql_validate_all
rc=$?

[ "$1" = "validate-all" ] && exit $rc

if [ $rc -ne 0 ]
then
    case "$1" in
        stop)    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_log err "$0 must be run as root or $OCF_RESKEY_pgdba"
    exit $OCF_ERR_GENERIC
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 $?;;

    stop)       pgsql_stop
                exit $?;;
    *)
                exit $OCF_ERR_UNIMPLEMENTED;;
esac