Sentry Active-Passive HA on Linux CentOS 7

sentry-cron.service

[Unit]
Description=Sentry Cron Container
After=docker.service

[Service]
Restart=always
ExecStart=/usr/bin/docker start -a sentry-cron
ExecStop=/usr/bin/docker stop sentry-cron

[Install]
WantedBy=local.target

sentry-postgres.service

[Unit]
Description=Sentry Postgres Container
After=docker.service

[Service]
Restart=always
ExecStart=/usr/bin/docker start -a sentry-postgres
ExecStop=/usr/bin/docker stop sentry-postgres

[Install]
WantedBy=local.target

sentry-redis.service

[Unit]
Description=Sentry Redis Container
After=docker.service

[Service]
Restart=always
ExecStart=/usr/bin/docker start -a sentry-redis
ExecStop=/usr/bin/docker stop sentry-redis

[Install]
WantedBy=local.target

sentry-server.service

[Unit]
Description=Sentry Server Container
After=docker.service

[Service]
Restart=always
ExecStart=/usr/bin/docker start -a sentry-server
ExecStop=/usr/bin/docker stop sentry-server

[Install]
WantedBy=local.target

sentry-worker-1.service

[Unit]
Description=Sentry Worker Container
After=docker.service

[Service]
Restart=always
ExecStart=/usr/bin/docker start -a sentry-worker-1
ExecStop=/usr/bin/docker stop sentry-worker-1

[Install]
WantedBy=local.target

sentry-worker-2.service

[Unit]
Description=Sentry Worker Container
After=docker.service

[Service]
Restart=always
ExecStart=/usr/bin/docker start -a sentry-worker-2
ExecStop=/usr/bin/docker stop sentry-worker-2

[Install]
WantedBy=local.target

setup.sh

#!/bin/bash
HOST1='sentry01'
HOST2='sentry02'
passwd hacluster

pcs cluster auth ${HOST1} ${HOST2}
pcs cluster setup --name sentry_cluster ${HOST1} ${HOST2}
pcs cluster start --all
pcs property set stonith-enabled=false
pcs property set no-quorum-policy=ignore
pcs status

pvcreate /dev/sdb
vgcreate vg_drbd /dev/sdb
lvcreate -n lv_drbd0 -l +100%FREE vg_drbd

-- SETUP DRBD FIRST ---

pcs cluster cib add_drbd
pcs resource create sentry_data ocf:linbit:drbd drbd_resource=drbd0 op monitor interval=60s
pcs resource master sentry_data_sync sentry_data master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true
pcs -f add_drbd resource show
pcs cluster cib-push add_drbd
chmod 777 /var/lib/pacemaker/cores

pcs cluster cib add_fs
pcs -f add_fs resource create sentry_fs Filesystem device="/dev/drbd0" directory="/var/lib/docker" fstype="xfs"
pcs -f add_fs constraint colocation add sentry_fs sentry_data_sync INFINITY with-rsc-role=Master

pcs -f add_fs constraint order promote sentry_data_
sync then start sentry_fs
pcs cluster cib-push add_fs

pcs resource create service_docker systemd:docker op monitor interval=60s
pcs constraint colocation add service_docker sentry_fs INFINITY with-rsc-role=Master
pcs constraint order sentry_fs then service_docker

docker run -d --name sentry-redis redis
docker run -d --name sentry-postgres -e POSTGRES_PASSWORD=secret -e POSTGRES_USER=sentry postgres

docker run --rm sentry config generate-secret-key
SECRET='PLACE IN OUTPUT LINE OF PREVIOUS CONTAINER'
docker run -it --rm -e SENTRY_SECRET_KEY="${SECRET}" --link sentry-postgres:postgres --link sentry-redis:redis sentry upgrade

docker run -d --name sentry-server -p 9000:9000 -e SENTRY_SECRET_KEY="${SECRET}" --link sentry-redis:redis --link sentry-postgres:postgres sentry

docker run -d --name sentry-cron -e SENTRY_SECRET_KEY="${SECRET}" --link sentry-postgres:postgres --link sentry-redis:redis sentry run cron

docker run -d --name sentry-worker-1 -e SENTRY_SECRET_KEY="${SECRET}" --link sentry-postgres:postgres --link sentry-redis:redis sentry run worker
docker run -d --name sentry-worker-2 -e SENTRY_SECRET_KEY="${SECRET}" --link sentry-postgres:postgres --link sentry-redis:redis sentry run worker

docker stop sentry-worker-2
docker stop sentry-worker-1
docker stop sentry-cron
docker stop sentry-server
docker stop sentry-postgres
docker stop sentry-redis

pcs resource create service_sentry-redis systemd:sentry-redis
pcs constraint colocation add service_sentry-redis service_docker INFINITY with-rsc-role=Master
pcs constraint order service_docker then service_sentry-redis

pcs resource create service_sentry-postgres systemd:sentry-postgres
pcs constraint colocation add service_sentry-postgres service_docker INFINITY with-rsc-role=Master
pcs constraint order service_docker then service_sentry-postgres


pcs resource create service_sentry-server systemd:sentry-server
pcs constraint colocation add service_sentry-server service_docker INFINITY with-rsc-role=Master
pcs constraint order service_sentry-postgres then service_sentry-server


pcs resource create service_sentry-cron systemd:sentry-cron
pcs constraint colocation add service_sentry-cron service_docker INFINITY with-rsc-role=Master
pcs constraint order service_sentry-server then service_sentry-cron


pcs resource create service_sentry-worker-1 systemd:sentry-worker-1
pcs constraint colocation add service_sentry-worker-1 service_docker INFINITY with-rsc-role=Master
pcs constraint order service_sentry-cron then service_sentry-worker-1


pcs resource create service_sentry-worker-2 systemd:sentry-worker-2
pcs constraint colocation add service_sentry-worker-2 service_docker INFINITY with-rsc-role=Master
pcs constraint order service_sentry-cron then service_sentry-worker-2