mirror of
https://github.com/outbackdingo/patroni.git
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Update docker-compose demo cluster (#980)
1. Multi-stage build with an extensive cleanup of useless files and optional image compression 2. Start three-node etcd cluster 3. Start three-node Patroni cluster 4. One container with haproxy 5. All container names are prefixed with "demo-" and don't have suffixes 6. Decommission dev_patroni_cluster.sh script, docker-compose is now standard de-facto. 7. Provide more examples in the docker/README.md
This commit is contained in:
Alexander Kukushkin
+103
-33
@@ -1,47 +1,117 @@
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# Patroni Dockerfile
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You can run Patroni in a docker container using this Dockerfile, or by using one of the Docker image at
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https://registry.opensource.zalan.do/v1/repositories/acid/patroni/tags
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You can run Patroni in a docker container using this Dockerfile
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This Dockerfile is meant in aiding development of Patroni and quick testing of features. It is not a production-worthy
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Dockerfile
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docker build -t patroni .
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# Examples
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## Standalone Patroni
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docker run -d registry.opensource.zalan.do/acid/patroni:1.0-SNAPSHOT
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docker run -d patroni
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## Multiple Patroni's communicating with a standalone etcd inside Docker
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Basically what you would do would be:
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* Run 1 container which provides etcd
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docker run -d <IMAGE> --etcd-only
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* Run n containers running Patroni, passing the `--etcd` option to the `docker run` command
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docker run -d <IMAGE> --etcd=<IP FROM etcd CONTAINER:PORT>
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To automate this you can run the following script:
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dev_patroni_cluster.sh [OPTIONS]
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Options:
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--image IMAGE The Docker image to use for the cluster
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--members INT The number of members for the cluster
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--name NAME The name of the new cluster
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## Three-node Patroni cluster with three-node etcd cluster and one haproxy container using docker-compose
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Example session:
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$ ./dev_patroni_cluster.sh --image registry.opensource.zalan.do/acid/patroni:1.0-SNAPSHOT --members=2 --name=bravo
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The etcd container is 6be871a11cb373406ca5ea1c6b39e1.0-SNAPSHOTfdde9fb1d6177212d6ad0c0d1bd9b563, ip=172.17.1.24
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Started Patroni container 67e611f2eca7c40f9e6e0e24a4a8f2cba7e3e56d22a420e15ab9240a37a9d7a4, ip=172.17.1.25
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Started Patroni container 47dd12ae635ab83b039f5889e250048b606ed5e48e3650b69e365e7e1d4acbcf, ip=172.17.1.26
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$ docker-compose up -d
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Creating demo-haproxy ...
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Creating demo-patroni2 ...
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Creating demo-patroni1 ...
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Creating demo-patroni3 ...
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Creating demo-etcd2 ...
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Creating demo-etcd1 ...
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Creating demo-etcd3 ...
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Creating demo-haproxy
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Creating demo-patroni2
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Creating demo-patroni1
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Creating demo-patroni3
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Creating demo-etcd1
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Creating demo-etcd2
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Creating demo-etcd2 ... done
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$ docker ps
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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47dd12ae635a registry.opensource.zalan.do/acid/patroni:1.0-SNAPSHOT "/bin/bash /entrypoi 10 seconds ago Up 8 seconds 4001/tcp, 5432/tcp, 2380/tcp bravo_OR64g8bx
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67e611f2eca7 registry.opensource.zalan.do/acid/patroni:1.0-SNAPSHOT "/bin/bash /entrypoi 11 seconds ago Up 10 seconds 2380/tcp, 4001/tcp, 5432/tcp bravo_si9no8iz
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6be871a11cb3 registry.opensource.zalan.do/acid/patroni:1.0-SNAPSHOT "/bin/bash /entrypoi 12 seconds ago Up 10 seconds 4001/tcp, 5432/tcp, 2380/tcp bravo_etcd
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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5b7a90b4cfbf patroni "/bin/sh /entrypoint…" 29 seconds ago Up 27 seconds demo-etcd2
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e30eea5222f2 patroni "/bin/sh /entrypoint…" 29 seconds ago Up 27 seconds demo-etcd1
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83bcf3cb208f patroni "/bin/sh /entrypoint…" 29 seconds ago Up 27 seconds demo-etcd3
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922532c56e7d patroni "/bin/sh /entrypoint…" 29 seconds ago Up 28 seconds demo-patroni3
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14f875e445f3 patroni "/bin/sh /entrypoint…" 29 seconds ago Up 28 seconds demo-patroni2
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110d1073b383 patroni "/bin/sh /entrypoint…" 29 seconds ago Up 28 seconds demo-patroni1
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5af5e6e36028 patroni "/bin/sh /entrypoint…" 29 seconds ago Up 28 seconds 0.0.0.0:5000-5001->5000-5001/tcp demo-haproxy
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$ docker logs demo-patroni1
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2019-02-20 08:19:32,714 INFO: Failed to import patroni.dcs.consul
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2019-02-20 08:19:32,737 INFO: Selected new etcd server http://etcd3:2379
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2019-02-20 08:19:35,140 INFO: Lock owner: None; I am patroni1
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2019-02-20 08:19:35,174 INFO: trying to bootstrap a new cluster
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...
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2019-02-20 08:19:39,310 INFO: postmaster pid=37
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2019-02-20 08:19:39.314 UTC [37] LOG: listening on IPv4 address "0.0.0.0", port 5432
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2019-02-20 08:19:39.321 UTC [37] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
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2019-02-20 08:19:39.353 UTC [39] LOG: database system was shut down at 2019-02-20 08:19:36 UTC
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2019-02-20 08:19:39.354 UTC [40] FATAL: the database system is starting up
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localhost:5432 - rejecting connections
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2019-02-20 08:19:39.369 UTC [37] LOG: database system is ready to accept connections
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localhost:5432 - accepting connections
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2019-02-20 08:19:39,383 INFO: establishing a new patroni connection to the postgres cluster
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2019-02-20 08:19:39,408 INFO: running post_bootstrap
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2019-02-20 08:19:39,432 WARNING: Could not activate Linux watchdog device: "Can't open watchdog device: [Errno 2] No such file or directory: '/dev/watchdog'"
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2019-02-20 08:19:39,515 INFO: initialized a new cluster
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2019-02-20 08:19:49,424 INFO: Lock owner: patroni1; I am patroni1
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2019-02-20 08:19:49,447 INFO: Lock owner: patroni1; I am patroni1
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2019-02-20 08:19:49,480 INFO: no action. i am the leader with the lock
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2019-02-20 08:19:59,422 INFO: Lock owner: patroni1; I am patroni1
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$ docker exec -ti demo-patroni1 bash
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postgres@patroni1:~$ patronictl list
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+-------------+----------+------------+--------+---------+----+-----------+
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| Cluster | Member | Host | Role | State | TL | Lag in MB |
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+-------------+----------+------------+--------+---------+----+-----------+
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| testcluster | patroni1 | 172.21.0.3 | Leader | running | 1 | 0 |
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| testcluster | patroni2 | 172.21.0.4 | | running | 1 | 0 |
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| testcluster | patroni3 | 172.21.0.5 | | running | 1 | 0 |
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+-------------+----------+------------+--------+---------+----+-----------+
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postgres@patroni1:~$ etcdctl ls --recursive --sort -p /service/testcluster
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/service/testcluster/config
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/service/testcluster/initialize
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/service/testcluster/leader
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/service/testcluster/members/
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/service/testcluster/members/patroni1
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/service/testcluster/members/patroni2
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/service/testcluster/members/patroni3
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/service/testcluster/optime/
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/service/testcluster/optime/leader
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postgres@patroni1:~$ etcdctl member list
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1bab629f01fa9065: name=etcd3 peerURLs=http://etcd3:2380 clientURLs=http://etcd3:2379 isLeader=false
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8ecb6af518d241cc: name=etcd2 peerURLs=http://etcd2:2380 clientURLs=http://etcd2:2379 isLeader=true
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b2e169fcb8a34028: name=etcd1 peerURLs=http://etcd1:2380 clientURLs=http://etcd1:2379 isLeader=false
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postgres@patroni1:~$ exit
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$ psql -h localhost -p 5000 -U postgres -W
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Password: postgres
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psql (11.2 (Ubuntu 11.2-1.pgdg18.04+1), server 10.7 (Debian 10.7-1.pgdg90+1))
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Type "help" for help.
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localhost/postgres=# select pg_is_in_recovery();
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pg_is_in_recovery
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───────────────────
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f
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(1 row)
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localhost/postgres=# \q
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$ psql -h localhost -p 5001 -U postgres -W
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Password: postgres
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psql (11.2 (Ubuntu 11.2-1.pgdg18.04+1), server 10.7 (Debian 10.7-1.pgdg90+1))
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Type "help" for help.
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localhost/postgres=# select pg_is_in_recovery();
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pg_is_in_recovery
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───────────────────
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t
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(1 row)
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@@ -1,104 +0,0 @@
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#!/bin/bash
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DOCKER_IMAGE="registry.opensource.zalan.do/acid/patroni:1.0-SNAPSHOT"
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MEMBERS=3
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function usage()
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{
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cat <<__EOF__
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Usage: $0
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Options:
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--image IMAGE The Docker image to use for the cluster
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--members INT The number of members for the cluster
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--name NAME The name of the new cluster
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Examples:
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$0 --image ${DOCKER_IMAGE}
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$0
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$0 --image ${DOCKER_IMAGE} --members=2
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__EOF__
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}
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optspec=":-:"
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while getopts "$optspec" optchar; do
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case "${optchar}" in
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-)
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case "${OPTARG}" in
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help)
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usage
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exit 0
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;;
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name)
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PATRONI_SCOPE="${!OPTIND}"; OPTIND=$(( $OPTIND + 1 ))
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;;
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name=*)
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PATRONI_SCOPE="${OPTARG#*=}"
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;;
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image)
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DOCKER_IMAGE="${!OPTIND}"; OPTIND=$(( $OPTIND + 1 ))
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;;
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image=*)
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DOCKER_IMAGE="${OPTARG#*=}"
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;;
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members)
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MEMBERS="${!OPTIND}"; OPTIND=$(( $OPTIND + 1 ))
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;;
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members=*)
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MEMBERS="${OPTARG#*=}"
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;;
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*)
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if [ "$OPTERR" = 1 ] && [ "${optspec:0:1}" != ":" ]; then
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echo "Unknown option --${OPTARG}" >&2
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fi
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;;
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esac;;
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*)
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if [ "$OPTERR" != 1 ] || [ "${optspec:0:1}" = ":" ]; then
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echo "Non-option argument: '-${OPTARG}'" >&2
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usage
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exit 1
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fi
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;;
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esac
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done
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if [ -z ${PATRONI_SCOPE} ]; then
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PATRONI_SCOPE=$(cat /dev/urandom | LC_ALL=C tr -dc 'a-z0-9' | head -c 8)
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fi
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function docker_run()
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{
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local name=$1
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shift
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container=$(docker run -d --name=$name $*)
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container_ip=$(docker inspect --format '{{ .NetworkSettings.IPAddress }}' ${container})
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echo "Started container ${name}, ip=${container_ip}"
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}
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ETCD_CONTAINER="${PATRONI_SCOPE}_etcd"
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docker_run ${ETCD_CONTAINER} ${DOCKER_IMAGE} --etcd
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DOCKER_ARGS="--link=${ETCD_CONTAINER}:${ETCD_CONTAINER} -e PATRONI_SCOPE=${PATRONI_SCOPE} -e PATRONI_ETCD_URL=http://${ETCD_CONTAINER}:2379"
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PATRONI_ENV=$(sed 's/#.*//g' docker/patroni-secrets.env | sed -n 's/^PATRONI_.*$/-e &/p' | tr '\n' ' ')
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PATRONI_VOLUME="-v $(dirname $(dirname $(realpath $0)))/patroni:/patroni"
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for i in $(seq 1 "${MEMBERS}"); do
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container_name=postgres${i}
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docker_run "${PATRONI_SCOPE}_${container_name}" \
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$PATRONI_VOLUME \
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$DOCKER_ARGS \
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$PATRONI_ENV \
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-e PATRONI_NAME=${container_name} \
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${DOCKER_IMAGE}
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done
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docker_run "${PATRONI_SCOPE}_haproxy" \
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-p=5000 -p=5001 \
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$DOCKER_ARGS \
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${DOCKER_IMAGE} --confd
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+44
-99
@@ -1,115 +1,60 @@
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#!/bin/bash
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#!/bin/sh
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function usage()
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{
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cat <<__EOF__
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Usage: $0
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if [ -f /a.tar.xz ]; then
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echo "decompressing image..."
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sudo tar xpJf /a.tar.xz -C / > /dev/null 2>&1
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sudo rm /a.tar.xz
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sudo ln -snf dash /bin/sh
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fi
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Options:
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readonly PATRONI_SCOPE=${PATRONI_SCOPE:-batman}
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PATRONI_NAMESPACE=${PATRONI_NAMESPACE:-/service}
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readonly PATRONI_NAMESPACE=${PATRONI_NAMESPACE%/}
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readonly DOCKER_IP=$(hostname --ip-address)
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--etcd Do not run Patroni, run a standalone etcd
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--confd Do not run Patroni, run a standalone confd
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--zookeeper Do not run Patroni, run a standalone zookeeper
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Examples:
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$0 --etcd
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$0 --confd
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$0 --zookeeper
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$0
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__EOF__
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}
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DOCKER_IP=$(hostname --ip-address)
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PATRONI_SCOPE=${PATRONI_SCOPE:-batman}
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ETCD_ARGS="--data-dir /tmp/etcd.data -advertise-client-urls=http://${DOCKER_IP}:2379 -listen-client-urls=http://0.0.0.0:2379"
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optspec=":vh-:"
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while getopts "$optspec" optchar; do
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case "${optchar}" in
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-)
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case "${OPTARG}" in
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confd)
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haproxy -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -D
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CONFD="confd -prefix=${PATRONI_NAMESPACE:-/service}/$PATRONI_SCOPE -interval=10 -backend"
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if [ ! -z ${PATRONI_ZOOKEEPER_HOSTS} ]; then
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while ! /usr/share/zookeeper/bin/zkCli.sh -server ${PATRONI_ZOOKEEPER_HOSTS} ls /; do
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sleep 1
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done
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exec $CONFD zookeeper -node ${PATRONI_ZOOKEEPER_HOSTS}
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else
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while ! curl -s ${PATRONI_ETCD_URL}/v2/members | jq -r '.members[0].clientURLs[0]' | grep -q http; do
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sleep 1
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done
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exec $CONFD etcd -node $PATRONI_ETCD_URL
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fi
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;;
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etcd)
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exec etcd $ETCD_ARGS
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;;
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zookeeper)
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exec /usr/share/zookeeper/bin/zkServer.sh start-foreground
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;;
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cheat)
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CHEAT=1
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;;
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help)
|
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usage
|
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exit 0
|
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;;
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*)
|
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if [ "$OPTERR" = 1 ] && [ "${optspec:0:1}" != ":" ]; then
|
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echo "Unknown option --${OPTARG}" >&2
|
||||
fi
|
||||
;;
|
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esac;;
|
||||
*)
|
||||
if [ "$OPTERR" != 1 ] || [ "${optspec:0:1}" = ":" ]; then
|
||||
echo "Non-option argument: '-${OPTARG}'" >&2
|
||||
usage
|
||||
exit 1
|
||||
fi
|
||||
;;
|
||||
esac
|
||||
done
|
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case "$1" in
|
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haproxy)
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haproxy -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -D
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CONFD="confd -prefix=$PATRONI_NAMESPACE/$PATRONI_SCOPE -interval=10 -backend"
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if [ ! -z "$PATRONI_ZOOKEEPER_HOSTS" ]; then
|
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while ! /usr/share/zookeeper/bin/zkCli.sh -server $PATRONI_ZOOKEEPER_HOSTS ls /; do
|
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sleep 1
|
||||
done
|
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exec dumb-init $CONFD zookeeper -node $PATRONI_ZOOKEEPER_HOSTS
|
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else
|
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while ! etcdctl cluster-health 2> /dev/null; do
|
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sleep 1
|
||||
done
|
||||
exec dumb-init $CONFD etcd -node $(echo $ETCDCTL_ENDPOINTS | sed 's/,/ -node /g')
|
||||
fi
|
||||
;;
|
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etcd)
|
||||
exec "$@" -advertise-client-urls http://$DOCKER_IP:2379
|
||||
;;
|
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zookeeper)
|
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exec /usr/share/zookeeper/bin/zkServer.sh start-foreground
|
||||
;;
|
||||
esac
|
||||
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||||
## We start an etcd
|
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if [[ -z ${PATRONI_ETCD_URL} && -z ${PATRONI_ZOOKEEPER_HOSTS} ]]; then
|
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etcd $ETCD_ARGS > /var/log/etcd.log 2> /var/log/etcd.err &
|
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if [ -z "$PATRONI_ETCD_HOSTS" ] && [ -z "$PATRONI_ZOOKEEPER_HOSTS" ]; then
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export PATRONI_ETCD_URL="http://127.0.0.1:2379"
|
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etcd --data-dir /tmp/etcd.data -advertise-client-urls=$PATRONI_ETCD_URL -listen-client-urls=http://0.0.0.0:2379 > /var/log/etcd.log 2> /var/log/etcd.err &
|
||||
fi
|
||||
|
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export PATRONI_SCOPE
|
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export PATRONI_NAME="${PATRONI_NAME:-${HOSTNAME}}"
|
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export PATRONI_RESTAPI_CONNECT_ADDRESS="${DOCKER_IP}:8008"
|
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export PATRONI_NAMESPACE
|
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export PATRONI_NAME="${PATRONI_NAME:-$(hostname)}"
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export PATRONI_RESTAPI_CONNECT_ADDRESS="$DOCKER_IP:8008"
|
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export PATRONI_RESTAPI_LISTEN="0.0.0.0:8008"
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export PATRONI_admin_PASSWORD="${PATRONI_admin_PASSWORD:=admin}"
|
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export PATRONI_admin_PASSWORD="${PATRONI_admin_PASSWORD:-admin}"
|
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export PATRONI_admin_OPTIONS="${PATRONI_admin_OPTIONS:-createdb, createrole}"
|
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export PATRONI_POSTGRESQL_CONNECT_ADDRESS="${DOCKER_IP}:5432"
|
||||
export PATRONI_POSTGRESQL_CONNECT_ADDRESS="$DOCKER_IP:5432"
|
||||
export PATRONI_POSTGRESQL_LISTEN="0.0.0.0:5432"
|
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export PATRONI_POSTGRESQL_DATA_DIR="data/${PATRONI_SCOPE}"
|
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export PATRONI_POSTGRESQL_DATA_DIR="${PATRONI_POSTGRESQL_DATA_DIR:-$PGDATA}"
|
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export PATRONI_REPLICATION_USERNAME="${PATRONI_REPLICATION_USERNAME:-replicator}"
|
||||
export PATRONI_REPLICATION_PASSWORD="${PATRONI_REPLICATION_PASSWORD:-abcd}"
|
||||
export PATRONI_REPLICATION_PASSWORD="${PATRONI_REPLICATION_PASSWORD:-replicate}"
|
||||
export PATRONI_SUPERUSER_USERNAME="${PATRONI_SUPERUSER_USERNAME:-postgres}"
|
||||
export PATRONI_SUPERUSER_PASSWORD="${PATRONI_SUPERUSER_PASSWORD:-postgres}"
|
||||
export PATRONI_POSTGRESQL_PGPASS="$HOME/.pgpass"
|
||||
|
||||
cat > /patroni.yml <<__EOF__
|
||||
bootstrap:
|
||||
dcs:
|
||||
postgresql:
|
||||
use_pg_rewind: true
|
||||
|
||||
pg_hba:
|
||||
- host all all 0.0.0.0/0 md5
|
||||
- host replication replicator ${DOCKER_IP}/16 md5
|
||||
__EOF__
|
||||
|
||||
mkdir -p "$HOME/.config/patroni"
|
||||
[ -h "$HOME/.config/patroni/patronictl.yaml" ] || ln -s /patroni.yml "$HOME/.config/patroni/patronictl.yaml"
|
||||
|
||||
[ -z $CHEAT ] && exec python3 /patroni.py /patroni.yml
|
||||
|
||||
while true; do
|
||||
sleep 60
|
||||
done
|
||||
exec python3 /patroni.py postgres0.yml
|
||||
|
||||
@@ -0,0 +1,5 @@
|
||||
ETCD_LISTEN_PEER_URLS=http://0.0.0.0:2380
|
||||
ETCD_LISTEN_CLIENT_URLS=http://0.0.0.0:2379
|
||||
ETCD_INITIAL_CLUSTER=etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380
|
||||
ETCD_INITIAL_CLUSTER_STATE=new
|
||||
ETCD_INITIAL_CLUSTER_TOKEN=tutorial
|
||||
@@ -1,3 +1,6 @@
|
||||
PATRONI_SCOPE=testcluster
|
||||
PATRONI_ETCD_HOSTS='etcd1:2379','etcd2:2379','etcd3:2379'
|
||||
|
||||
PATRONI_RESTAPI_USERNAME=admin
|
||||
PATRONI_RESTAPI_PASSWORD=admin
|
||||
PATRONI_SUPERUSER_USERNAME=postgres
|
||||
@@ -6,3 +9,6 @@ PATRONI_REPLICATION_USERNAME=replicator
|
||||
PATRONI_REPLICATION_PASSWORD=replicate
|
||||
PATRONI_admin_PASSWORD=admin
|
||||
PATRONI_admin_OPTIONS=createdb,createrole
|
||||
|
||||
# for etcdctl
|
||||
ETCDCTL_ENDPOINTS=http://etcd1:2379,http://etcd2:2379,http://etcd3:2379
|
||||
Reference in New Issue
Block a user