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#!/bin/bash
# Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this code except in compliance
# with the License. You may obtain a copy of the License
# at http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing
# permissions and limitations under the License.
# NAME
# list_masters - loop through the nodes in the cluster, using pgwget to determine if any are a master.
CDF=/opt/app/cdf
if [ -d /opt/app/postgresql-9.5.2 ]
then PGDIR=/opt/app/postgresql-9.5.2
else PGDIR=/usr/lib/postgresql/9.5
fi
if [ -d /opt/app/postgresql-config-9.5.2/ ]
then CFGDIR=/opt/app/postgresql-config-9.5.2/
else CFGDIR=/opt/app/postgresql-config/
fi
PATH=$PGDIR/bin:$CDF/bin:/opt/app/pgaas/bin:/opt/app/postgresql-prep/bin:$PATH
# loop through the nodes in the cluster, using pgwget to determine if any are a master. Save in $@
for i in $(getpropvalue -n pgnodes | sed 's/|/ /g')
do
if pgwget --quiet -O/dev/null http://$i:8000/rw
then set -- "$@" $i
fi
done
echo "$@"
case $# in
1 ) exit 0 ;; # one master exists and is running
0 ) exit 1 ;; # no masters exist
* ) exit 2 ;; # more than one master exist
esac
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