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#!/bin/bash
if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
echo "parameters: "
echo " -o, --operation : Executes cluster-wide operation. Operation can be 'get-state','change-state','shutdown','force-start','partial-start','get-cluster-version','change-cluster-version'."
echo " -s, --state : Updates state of the cluster to new state. New state can be 'active', 'frozen', 'passive', 'no_migration'."
echo " -a, --address : Defines which ip address hazelcast is running. Default value is '127.0.0.1'."
echo " -p, --port : Defines which port hazelcast is running. Default value is '5701'."
echo " -g, --groupname : Defines groupname of the cluster. Default value is 'dev'."
echo " -P, --password : Defines password of the cluster. Default value is 'dev-pass'."
echo " -v, --version : Defines the cluster version to change to. To be used in conjunction with '-o change-cluster-version'."
echo " -d, --debug : Prints error output."
echo
echo "HTTPs related (when TLS is enabled):"
echo " --https : Uses HTTPs protocol for REST calls. (no parameter value expected)"
echo " --cacert : Defines trusted PEM-encoded certificate file path. It's used to verify member certificates."
echo " --cert : Defines PEM-encoded client certificate file path. Only needed when client certificate authentication is used."
echo " --key : Defines PEM-encoded client private key file path. Only needed when client certificate authentication is used."
echo " --insecure : Disables member certificate verification. (no parameter value expected)"
exit 0
fi
URL_SCHEME="http"
CURL_ARGS="--silent"
while [ $# -ge 1 ]
do
key="$1"
case "$key" in
-o|--operation)
OPERATION="$2"
shift # past argument
;;
-s|--state)
STATE="$2"
shift # past argument
;;
-p|--port)
PORT="$2"
shift # past argument
;;
-g|--groupname)
GROUPNAME="$2"
shift # past argument
;;
-P|--password)
PASSWORD="$2"
shift # past argument
;;
-a|--address)
ADDRESS="$2"
shift # past argument
;;
-v|--version)
CLUSTER_VERSION="$2"
shift # past argument
;;
-d|--debug)
CURL_ARGS="$CURL_ARGS --show-error"
;;
--https)
URL_SCHEME="https"
;;
--cert|--key)
CURL_ARGS="$CURL_ARGS $1 $2"
shift # past argument
;;
--cacert)
CURL_ARGS="$CURL_ARGS --capath /dev/null $1 $2"
shift # past argument
;;
--insecure)
echo "WARNING: You're using the insecure switch. Hazelcast member TLS certificates will not be verified!" >&2
CURL_ARGS="$CURL_ARGS $1"
;;
*)
esac
shift # past argument or value
done
if [ -z "$OPERATION" ]; then
echo "No operation is defined, running script with default operation: 'get-state'."
OPERATION="get-state"
fi
if [ -z "$PORT" ]; then
echo "No port is defined, running script with default port: '5701'."
PORT="5701"
fi
if [ -z "$GROUPNAME" ]; then
echo "No groupname is defined, running script with default groupname: 'dev'."
GROUPNAME="dev"
fi
if [ -z "$ADDRESS" ]; then
echo "No specific ip address is defined, running script with default ip: '127.0.0.1'."
ADDRESS="127.0.0.1"
fi
command -v curl >/dev/null 2>&1 || { echo >&2 "Cluster state script requires curl but it's not installed. Aborting."; exit -1; }
URL_BASE="${URL_SCHEME}://${ADDRESS}:${PORT}/hazelcast/rest/management/cluster"
CURL_CMD="curl $CURL_ARGS"
if [ "$OPERATION" != "get-state" ] && [ "$OPERATION" != "change-state" ] && [ "$OPERATION" != "shutdown" ] && [ "$OPERATION" != "force-start" ] && [ "$OPERATION" != "partial-start" ] && [ "$OPERATION" != "get-cluster-version" ] && [ "$OPERATION" != "change-cluster-version" ]; then
echo "Not a valid cluster operation, valid operations are 'get-state' || 'change-state' || 'shutdown' || 'force-start' || 'partial-start' || 'get-cluster-version' || 'change-cluster-version'"
exit 2
fi
if [ "$OPERATION" = "get-state" ]; then
echo "Getting cluster state on address ${ADDRESS}:${PORT}"
response=$(${CURL_CMD} --data "${GROUPNAME}&${PASSWORD}" "${URL_BASE}/state")
CURL_EXIT_CODE=$?
STATUS=$(echo "${response}" | sed -e 's/^.*"status"[ ]*:[ ]*"//' -e 's/".*//')
if [ "$STATUS" = "success" ];then
CURRSTATE=$(echo "${response}" | sed -e 's/^.*"state"[ ]*:[ ]*"//' -e 's/".*//')
echo "Cluster is in ${CURRSTATE} state."
exit 0
fi
elif [ "$OPERATION" = "change-state" ]; then
if [ -z "$STATE" ]; then
echo "No new state is defined. Please define new state with --state 'active', 'no_migration, 'frozen', 'passive'"
exit 2
fi
if [ "$STATE" != "frozen" ] && [ "$STATE" != "active" ] && [ "$STATE" != "no_migration" ] && [ "$STATE" != "passive" ]; then
echo "Not a valid cluster state, valid states are 'active' || 'frozen' || 'passive' || 'no_migration'"
exit 2
fi
echo "Changing cluster state to ${STATE} on address ${ADDRESS}:${PORT}"
response=$(${CURL_CMD} --data "${GROUPNAME}&${PASSWORD}&${STATE}" "${URL_BASE}/changeState")
CURL_EXIT_CODE=$?
STATUS=$(echo "${response}" | sed -e 's/^.*"status"[ ]*:[ ]*"//' -e 's/".*//')
if [ "$STATUS" = "fail" ];then
NEWSTATE=$(echo "${response}" | sed -e 's/^.*"state"[ ]*:[ ]*"//' -e 's/".*//')
if [ "$NEWSTATE" != "null" ]; then
echo "Cluster is already in ${STATE} state}"
else
echo "An error occured while changing cluster state!";
fi
exit 3
fi
if [ "$STATUS" = "success" ];then
NEWSTATE=$(echo "${response}" | sed -e 's/^.*"state"[ ]*:[ ]*"//' -e 's/".*//')
echo "State of the cluster changed to ${NEWSTATE} state"
exit 0
fi
elif [ "$OPERATION" = "force-start" ]; then
echo "Force-start makes cluster operational if cluster start is blocked by problematic members."
echo "Starting cluster from member on address ${ADDRESS}:${PORT}"
response=$(${CURL_CMD} --data "${GROUPNAME}&${PASSWORD}" "${URL_BASE}/forceStart")
CURL_EXIT_CODE=$?
STATUS=$(echo "${response}" | sed -e 's/^.*"status"[ ]*:[ ]*"//' -e 's/".*//')
if [ "$STATUS" = "success" ];then
echo "Cluster force-start completed!"
exit 0
fi
elif [ "$OPERATION" = "partial-start" ]; then
echo "Partial-start makes cluster operational by starting only a portion of available members if cluster start is blocked by problematic members."
echo "Starting cluster from member on address ${ADDRESS}:${PORT}"
response=$(${CURL_CMD} --data "${GROUPNAME}&${PASSWORD}" "${URL_BASE}/partialStart")
CURL_EXIT_CODE=$?
STATUS=$(echo "${response}" | sed -e 's/^.*"status"[ ]*:[ ]*"//' -e 's/".*//')
if [ "$STATUS" = "success" ];then
echo "Cluster partial-start completed!"
exit 0
fi
elif [ "$OPERATION" = "shutdown" ]; then
echo "You are shutting down the cluster."
echo "Shutting down from member on address ${ADDRESS}:${PORT}"
response=$(${CURL_CMD} --data "${GROUPNAME}&${PASSWORD}" "${URL_BASE}/clusterShutdown")
CURL_EXIT_CODE=$?
STATUS=$(echo "${response}" | sed -e 's/^.*"status"[ ]*:[ ]*"//' -e 's/".*//')
if [ "$STATUS" = "success" ];then
echo "Cluster shutdown completed!"
exit 0
fi
elif [ "$OPERATION" = "get-cluster-version" ]; then
echo "Getting cluster version on address ${ADDRESS}:${PORT}"
response=$(${CURL_CMD} "${URL_BASE}/version")
CURL_EXIT_CODE=$?
STATUS=$(echo "${response}" | sed -e 's/^.*"status"[ ]*:[ ]*"//' -e 's/".*//')
if [ "$STATUS" = "success" ];then
CURRVERSION=$(echo "${response}" | sed -e 's/^.*"version"[ ]*:[ ]*"//' -e 's/".*//')
echo "Cluster operates in version ${CURRVERSION}."
exit 0
fi
elif [ "$OPERATION" = "change-cluster-version" ]; then
if [ -z "$CLUSTER_VERSION" ]; then
echo "No new cluster version is defined. Please define new cluster version with --version MAJOR.MINOR (for example --version 3.8)"
exit 2
fi
echo "Changing cluster version to ${CLUSTER_VERSION} on address ${ADDRESS}:${PORT}"
response=$(${CURL_CMD} --data "${GROUPNAME}&${PASSWORD}&${CLUSTER_VERSION}" "${URL_BASE}/version")
CURL_EXIT_CODE=$?
STATUS=$(echo "${response}" | sed -e 's/^.*"status"[ ]*:[ ]*"//' -e 's/".*//')
if [ "$STATUS" = "fail" ]; then
MESSAGE=$(echo "${response}" | sed -e 's/^.*"message"[ ]*:[ ]*"//' -e 's/".*//')
# when there is no "message" element in response, above sed process returns "{"
if [ "$MESSAGE" != "{" ]; then
echo "Cluster version change failed: ${MESSAGE}"
else
echo "An error occured while changing cluster version!";
fi
exit 3
fi
if [ "$STATUS" = "success" ]; then
NEWVERSION=$(echo "${response}" | sed -e 's/^.*"version"[ ]*:[ ]*"//' -e 's/".*//')
echo "Cluster version changed to ${NEWVERSION}."
exit 0
fi
fi
if [ "$STATUS" = "fail" ];then
echo "An error occurred while performing HTTP REST operation on the Hazelcast cluster!";
exit 3
fi
if [ "$STATUS" = "forbidden" ];then
echo "Please make sure you provide valid group name (or valid username/password combination when the Hazelcast security is enabled).";
exit 4
fi
if [ $CURL_EXIT_CODE -ne 0 ]; then
echo "HTTP REST call on address ${ADDRESS}:${PORT} failed. "
exit $CURL_EXIT_CODE
fi
