High Available croit Management Containers

docker exec -it croit mysqldump croit > croit.sql

create database croit;

database:
  user: 
  password: 
  url: jdbc:mariadb:sequential//,/croit
  driverClass: org.mariadb.jdbc.Driver

# server from where the dashboard fetches statistics
graphiteServer: http://:@:
# prefix used for all metrics, can be adjusted
graphiteMetricPrefix: croit.
# (optional) use a proxy server
#graphiteProxy:

# server to which the servers send their metrics, usually the same server as above
graphiteTarget: 
graphiteTargetPort: 

#!/bin/bash

: ${OCF_FUNCTIONS=${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs}
. ${OCF_FUNCTIONS}
: ${__OCF_ACTION=$1}

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

<longdesc lang="en">
This resource agent manages a croit docker container and its associated PXE boot IP.
</longdesc>
<shortdesc lang="en">croit resource agent</shortdesc>

<parameters>
<parameter name="ip" unique="1" required="1">
<shortdesc lang="en">IP address used for PXE in CIDR notation</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="nic" unique="1" required="1">
<shortdesc lang="en">interface on which to bind the IP</shortdesc>
<content type="string" default="" />
</parameter>
</parameters>

<actions>
<action name="start"     timeout="20s" />
<action name="stop"      timeout="20s" />
<action name="monitor"   timeout="20s" interval="10s" depth="0"/>
<action name="meta-data" timeout="5s" />
</actions>
</resource-agent>
END
}

croit_usage() {
	echo "usage: $0 {start|stop|monitor|meta-data}"
}

croit_start() {
	ip link set up dev $OCF_RESKEY_nic
	ip address add $OCF_RESKEY_ip dev $OCF_RESKEY_nic
	if ! ip address show dev "$OCF_RESKEY_nic" | grep "$OCF_RESKEY_ip" ; then
		ocf_log err "failed to add IP address"
		return $OCF_ERROR
	fi
	arping -c 1 -I $OCF_RESKEY_nic -S $OCF_RESKEY_ip -A $OCF_RESKEY_ip -q
	arping -c 1 -I $OCF_RESKEY_nic -S $OCF_RESKEY_ip -U $OCF_RESKEY_ip -q
	docker start croit
	if [[ $? != 0 ]]; then
		ocf_log err "failed to start croit container"
		return $OCF_ERROR
	fi
	return $OCF_SUCCESS
}

croit_stop() {
	ip address delete $OCF_RESKEY_ip dev $OCF_RESKEY_nic
	docker stop croit
	return $OCF_SUCCESS
}

croit_monitor() {
	status=$(docker inspect croit | jq -r .[0].State.Status)
	if [[ $status == "" ]] ; then
		ocf_log err "could not find croit container status -- is the container deployed?"
		return $OCF_ERR_GENERIC
	fi
	if [[ $status == "exited" ]] ; then
		return $OCF_NOT_RUNNING
	fi
	if ! ip address show dev "$OCF_RESKEY_nic" | grep "$OCF_RESKEY_ip" ; then
		ocf_log err "ip address is not bound but container not in state exited"
		return $OCF_ERROR
	fi
	health=$(docker inspect croit | jq -r .[0].State.Health.Status)
	if [[ $health == "unhealthy" ]] ; then
		ocf_log err "croit container is unhealthy, check container"
		return $OCF_ERR_GENERIC
	fi
	return $OCF_SUCCESS
}

case $__OCF_ACTION in
meta-data)      croit_meta_data
                exit $OCF_SUCCESS
                ;;
start)          croit_start;;
stop)           croit_stop;;
monitor)        croit_monitor;;
usage|help)     croit_usage
                exit $OCF_SUCCESS
                ;;
*)              croit_usage
                exit $OCF_ERR_UNIMPLEMENTED
                ;;
esac
rc=$?
ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc"
exit $rc