\u4ee5\u4e0b\u662f\u9488\u5bf9PostgreSQL\u7684\u4e0d\u540c\u96c6\u7fa4\u914d\u7f6e\u7684\u591a\u79cd\u9009\u62e9\u3002\u6bcf\u6b21\u6784\u5efa\u90fd\u5f88\u7e41\u7410\uff0c\u6240\u4ee5\u6211\u4e2a\u4eba\u4f7f\u7528Ansible\u8fdb\u884c\u81ea\u52a8\u5316\u3002\u56e0\u4e3a\u6211\u5df2\u7ecf\u7f16\u5199\u4e86\u8fd9\u4e9bPlaybooks\uff0c\u6240\u4ee5\u51b3\u5b9a\u5728GitHub\u4e0a\u516c\u5f00\u5b83\u4eec\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5c06\u4ecb\u7ecd\u8fd9\u4e9b\u540d\u4e3a”Ansible Playbooks for PostgreSQL Clusters”\u7684Playbooks\u3002<\/p>\n
Ansible Playbooks for PostgreSQL Clusters \u662f\u7528\u4e8e\u6784\u5efa\u4e0d\u540c\u7684 PostgreSQL \u96c6\u7fa4\u914d\u7f6e\u7684 Ansible Playbooks\u3002\u6b64\u9879\u76ee\u9075\u5faa BSD \u8bb8\u53ef\u8bc1\uff0c\u4ee3\u7801\u6258\u7ba1\u5728 GitHub \u4e0a\u3002<\/p>\n
Ansible Playbooks \u7528\u4e8e\u7ba1\u7406 PostgreSQL \u96c6\u7fa4
\nhttps:\/\/github.com\/tom-sato\/ansible-postgresql-cluster<\/p>\n
\u622a\u81f32021\u5e742\u6708\uff0cPlaybook\u652f\u6301\u4ee5\u4e0b\u96c6\u7fa4\u914d\u7f6e\u3002<\/p>\n
<\/p>\n
Pacemaker + DRBD<\/p>\n
Pacemaker + \u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3
\nPostgreSQL Automated Failover (PAF)
\nrepmgr (Replication Manager for PostgreSQL clusters)<\/p>\n
\u4eca\u540e\uff0c\u6211\u4eec\u5e0c\u671b\u6269\u5927\u652f\u6301\u7684\u96c6\u7fa4\u914d\u7f6e\uff0c\u5982\u903b\u8f91\u590d\u5236\u548cPatroni\u7b49\u3002<\/p>\n
\u8981\u4f7f\u7528Ansible Playbooks for PostgreSQL Clusters\uff0c\u9700\u8981\u4ee5\u4e0b\u8f6f\u4ef6\u624d\u53ef\u4ee5\u3002<\/p>\n
<\/p>\n
<\/p>\n
Ansible 2.9.x<\/p>\n
\u53ea\u8981\u8f6f\u4ef6\u7684\u7248\u672c\u6bd4\u4e0a\u8ff0\u7684\u7248\u672c\u66f4\u65b0\uff0c\u5e94\u8be5\u5c31\u6ca1\u6709\u95ee\u9898\u3002\u5982\u679cVagrant Box\u4e5f\u662fRedHat\/CentOS\u7cfb\u5217\u7684\u8bdd\uff0c\u5176\u4ed6\u7684Box\u4e5f\u5e94\u8be5\u6ca1\u95ee\u9898\u3002\u4f46\u662f\uff0c\u9664\u4e86\u4e0a\u9762\u63d0\u5230\u7684\u7248\u672c\uff0c\u6211\u6ca1\u6709\u9a8c\u8bc1\u5176\u4ed6\u7248\u672c\u7684\u8fd0\u884c\u60c5\u51b5\uff0c\u6240\u4ee5\u53ef\u80fd\u4f1a\u5b58\u5728\u4e00\u4e9b\u95ee\u9898\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528Ansible Playbooks\u90e8\u7f72PostgreSQL\u96c6\u7fa4\u7684\u65b9\u6cd5\u3002<\/p>\n
$ git clone https:\/\/github.com\/tom-sato\/ansible-postgresql-cluster.git
\n\u6b63\u5728\u514b\u9686\u5230 ‘ansible-postgresql-cluster’…
\n\u8fdc\u7a0b\uff1a\u679a\u4e3e\u5bf9\u8c61\uff1a145\uff0c\u5b8c\u6210\u3002
\n\u8fdc\u7a0b\uff1a\u8ba1\u6570\u5bf9\u8c61\uff1a100\uff05\uff08145\/145\uff09\uff0c\u5b8c\u6210\u3002
\n\u8fdc\u7a0b\uff1a\u538b\u7f29\u5bf9\u8c61\uff1a100\uff05\uff0879\/79\uff09\uff0c\u5b8c\u6210\u3002
\n\u8fdc\u7a0b\uff1a\u5171\u53d1\u9001145\u4e2a\u5bf9\u8c61\uff08\u5df2\u66f4\u653944\u4e2a\uff09\uff0c\u91cd\u7528\u4e86135\u4e2a\u5bf9\u8c61\uff08\u5df2\u66f4\u653934\u4e2a\uff09\uff0cpacking 0
\n\u6b63\u5728\u63a5\u6536\u5bf9\u8c61\uff1a100\uff05\uff08145\/145\uff09\uff0c29.67 KiB | 5.93 MiB\/s, \u5b8c\u6210\u3002
\n\u6b63\u5728\u89e3\u51b3\u5dee\u5f02\uff1a100\uff05\uff0844\/44\uff09\uff0c\u5b8c\u6210\u3002<\/p>\n
\u5207\u6362\u5230\u5b58\u50a8\u5e93\u76ee\u5f55\u3002<\/p>\n
$ cd ansible-postgresql-cluster<\/p>\n
\u542f\u52a8\u865a\u62df\u673a\u5e76\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n
$ PLAYBOOK=pgpool2 vagrant up –provosion
\n\u6b63\u5728\u4f7f\u7528’virtualbox’\u63d0\u4f9b\u7a0b\u5e8f\u542f\u52a8’master’\u865a\u62df\u673a…
\n\u6b63\u5728\u4f7f\u7528’virtualbox’\u63d0\u4f9b\u7a0b\u5e8f\u542f\u52a8’slave’\u865a\u62df\u673a…
\n\u7701\u7565…
\nPLAY RECAP *********************************************************************
\nmaster : ok=64 changed=47 unreachable=0 failed=0 skipped=28 rescued=0 ignored=0
\nslave : ok=61 changed=44 unreachable=0 failed=0 skipped=31 rescued=0 ignored=0<\/p>\n
PLAYBOOK=pgpool2\u4f7f\u7528\u73af\u5883\u53d8\u91cf\u6307\u5b9a\u4e86\u914d\u7f6e\u6587\u4ef6\u3002\u4f7f\u7528\u6b64\u914d\u7f6e\u6587\u4ef6\uff0c\u5c06\u5728\u75313\u4e2a\u8282\u70b9\u7ec4\u6210\u7684CentOS 8\u4e2d\u6784\u5efa\u4f7f\u7528Pgpool-II\u7684\u96c6\u7fa4\u7ed3\u6784\u3002\u8bf7\u53c2\u8003\u201c\u5982\u4f55\u81ea\u5b9a\u4e49\u201d\u4ee5\u4e86\u89e3\u53ef\u4ee5\u6307\u5b9a\u7684\u73af\u5883\u53d8\u91cf\u3002<\/p>\n
\u8fde\u63a5\u5230\u865a\u62df\u673a\u5e76\u8fdb\u884c\u64cd\u4f5c\u786e\u8ba4\u3002<\/p>\n
$ PLAYBOOK=pgpool2 vagrant ssh master<\/p>\n
\u4e3b\u673a\u540d\u5c06\u4e3amaster\uff0cslave-1\uff0c…\u7b49\u3002<\/p>\n
\u5982\u679c\u4f7f\u7528Pgpool-II\u8fdb\u884c\u96c6\u7fa4\u914d\u7f6e\uff0c\u4f8b\u5982\uff0c\u53ef\u4ee5\u5207\u6362\u5230postgres\u7528\u6237\u5e76\u67e5\u770bPgpool-II\u7ba1\u7406\u7684\u8282\u70b9\u5217\u8868\uff0c<\/p>\n
$ sudo su – postgres
\n$ psql -h vip-1 -p 9999 -c “SHOW pool_nodes”
\nnode_id | hostname | port | status | lb_weight | role | select_cnt | load_balance_node | replication_delay | replication_state | replication_sync_state | last_status_change
\n———+———-+——+——–+———–+———+————+——————-+——————-+——————-+————————+———————
\n0 | master | 5432 | up | 0.333333 | primary | 0 | false | 0 | | | 2021-02-10 10:52:45
\n1 | slave-1 | 5432 | up | 0.333333 | standby | 0 | false | 0 | streaming | async | 2021-02-10 10:52:45
\n2 | slave-2 | 5432 | up | 0.333333 | standby | 0 | true | 0 | streaming | async | 2021-02-10 10:52:45
\n(3 \u884c)<\/p>\n
\u53ef\u4ee5\u505c\u6b62\u4e3b\u8282\u70b9\uff0c\u7b49\u5f85\u4e00\u6bb5\u65f6\u95f4\uff0c\u7136\u540e\u89c2\u5bdf\u53d1\u751f\u7684\u6545\u969c\u8f6c\u79fb\u3002<\/p>\n
$ \/usr\/pgsql-13\/bin\/pg_ctl stop -m i
\n\u6b63\u5728\u7b49\u5f85\u670d\u52a1\u5668\u505c\u6b62\u5904\u7406… \u5b8c\u6210
\n\u670d\u52a1\u5668\u5df2\u505c\u6b62
\n\uff08\u7b49\u5f85\u7247\u523b\uff09
\n$ psql -h vip-1 -p 9999 -c “show pool_nodes”
\nnode_id | hostname | port | status | lb_weight | role | select_cnt | load_balance_node | replication_delay | replication_state | replication_sync_state | last_status_change
\n———+———-+——+——–+———–+———+————+——————-+——————-+——————-+————————+———————
\n0 | master | 5432 | down | 0.333333 | standby | 0 | false | 0 | | | 2021-02-10 11:00:34
\n1 | slave-1 | 5432 | up | 0.333333 | primary | 0 | true | 0 | | | 2021-02-10 11:00:34
\n2 | slave-2 | 5432 | up | 0.333333 | standby | 0 | false | 0 | | | 2021-02-10 11:00:36
\n(3 \u884c)<\/p>\n
\u4e0d\u9700\u8981\u76f4\u63a5\u7f16\u8f91Vagrantfile\u6587\u4ef6\uff0c\u53ef\u4ee5\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u6765\u6307\u5b9aPlaybook\u7b49\u3002\u53ef\u6307\u5b9a\u7684\u73af\u5883\u53d8\u91cf\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
PLAYBOOK – \u30d7\u30ec\u30a4\u30d6\u30c3\u30af\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306f postgresql \u3067\u3059\u3002<\/p>\n
NUM_NODES – \u30ce\u30fc\u30c9\u6570\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306f 3 \u30ce\u30fc\u30c9\u3067\u3001DRBD \u306e\u307f 2 \u30ce\u30fc\u30c9\u3067\u3059\u3002<\/p>\n
BOX – \u30dc\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306f centos\/8 \u3067\u3059\u3002<\/p>\n
PROXY – \u4eee\u60f3\u30de\u30b7\u30f3\u306b\u8a2d\u5b9a\u3059\u308b\u30d7\u30ed\u30ad\u30b7\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u7a7a\u6587\u5b57\u5217\u3067\u3059\u3002\u4e8b\u524d\u306b vagrant-proxyconf \u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n
\u5982\u679c\u8981\u5728CentOS 7\u4e0a\u6784\u5efa\u4e00\u4e2a\u7531\u4e24\u4e2a\u8282\u70b9\u7ec4\u6210\u7684\u6d41\u590d\u5236\u96c6\u7fa4\u914d\u7f6e\uff0c\u60a8\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u6307\u5b9a\u73af\u5883\u53d8\u91cf\u3002<\/p>\n
$<\/span> NUM_NODES<\/span>=<\/span>2 BOX<\/span>=<\/span>centos\/7 vagrant up\r\n<\/code><\/pre>\n\u5982\u679c\u5df2\u7ecf\u8fdb\u884c\u4e86\u914d\u7f6e\uff0c\u5219\u53ef\u80fd\u65e0\u6cd5\u6210\u529f\u8fdb\u884c\u6784\u5efa\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5efa\u8bae\u5148\u8fd0\u884c “vagrant destroy -f” \u547d\u4ee4\u6765\u9500\u6bc1\u865a\u62df\u673a\uff0c\u7136\u540e\u518d\u8bd5\u4e00\u6b21\u3002<\/p>\n
\u53ef\u4ee5\u6307\u5b9a\u7684 Playbook \u662f\u4ece\u5b58\u50a8\u5e93\u7684\u9876\u7ea7\u76ee\u5f55\u4e2d\u7684 *.yml \u6587\u4ef6\u4e2d\u53bb\u9664\u6269\u5c55\u540d\u7684\u5185\u5bb9\u3002<\/p>\n
postgresql – \u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u308b\u30af\u30e9\u30b9\u30bf\u69cb\u6210\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002<\/p>\n
pgpool2 – Pgpool-II \u306b\u3088\u308b\u30af\u30e9\u30b9\u30bf\u69cb\u6210\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u30e2\u30fc\u30c9\u306f\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u30cd\u30a4\u30c6\u30a3\u30d6\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u30a2\u30a4\u30bd\u30ec\u30fc\u30b7\u30e7\u30f3 (Pgpool-II 4.2 \u4ee5\u964d)\u3001raw \u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
pacemaker-drbd – Pacemaker + DRBD \u306b\u3088\u308b\u30af\u30e9\u30b9\u30bf\u69cb\u6210\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002<\/p>\n
pacemaker-replication – Pacemaker + \u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u308b\u30af\u30e9\u30b9\u30bf\u69cb\u6210\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002PostgreSQL 12 \u4ee5\u964d\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n
pacemaker-paf PAF \u306b\u3088\u308b\u30af\u30e9\u30b9\u30bf\u69cb\u6210\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002CentOS 8 \u306b\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n
repmgr – repmgr \u306b\u3088\u308b\u30af\u30e9\u30b9\u30bf\u69cb\u6210\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002\u5b9f\u9a13\u7684\u3067\u3059\u3002<\/p>\n
\u53ef\u4ee5\u4f7f\u7528\u89d2\u8272\u53d8\u91cf\u6765\u6307\u5b9aPostgreSQL\u7684\u7248\u672c\u3001\u6570\u636e\u76ee\u5f55\u548c\u5176\u4ed6\u8f6f\u4ef6\u8bbe\u7f6e\u3002\u6240\u6709\u53ef\u6307\u5b9a\u7684\u89d2\u8272\u53d8\u91cf\u90fd\u5728README.md\u4e2d\u8bf4\u660e\u3002\u867d\u7136\u6211\u4e0d\u77e5\u9053\u600e\u6837\u6307\u5b9a\u6700\u597d\uff0c\u4f46\u4f60\u53ef\u4ee5\u5148\u5c06\u5176\u5199\u5728playbook\u5185\u7684vars:\u4e2d\u3002<\/p>\n
\u5982\u679c\u4f60\u60f3\u5728Pgpool-II\u7684\u96c6\u7fa4\u914d\u7f6e\u4e2d\u6307\u5b9aPgpool-II\u7684\u7248\u672c\u4e3a4.1\uff0c\u96c6\u7fa4\u6a21\u5f0f\u4e3a\u672c\u5730\u590d\u5236\uff0cPostgreSQL\u7684\u7248\u672c\u4e3a12\uff0c\u90a3\u4e48\u4f60\u9700\u8981\u5728pgpool2.yml\u6587\u4ef6\u7684vars:\u90e8\u5206\u6307\u5b9a\u89d2\u8272\u53d8\u91cf\u3002\u4ecepostgresql_extra_config_parameters\u5f00\u59cb\uff0c\u8fd9\u4e9b\u90fd\u662f\u9700\u8981\u5728playbook\u4e2d\u8986\u76d6\u7684\u89d2\u8272\u53d8\u91cf\u3002<\/p>\n
---<\/span>\r\n-<\/span> hosts<\/span>:<\/span> all<\/span>\r\n become<\/span>:<\/span> yes<\/span>\r\n vars<\/span>:<\/span>\r\n pgpool2_version<\/span>:<\/span> 4.1<\/span>\r\n pgpool2_backend_clustering_mode<\/span>:<\/span> native_replication<\/span>\r\n postgresql_version<\/span>:<\/span> 12<\/span>\r\n postgresql_extra_config_parameters<\/span>:<\/span> |<\/span>\r\n {% if pgpool2_backend_clustering_mode == 'snapshot_isolation' %}<\/span>\r\n default_transaction_isolation = 'repeatable read'<\/span>\r\n {% endif %}<\/span>\r\n restart_after_crash = off<\/span>\r\n postgresql_control_as_service<\/span>:<\/span> no<\/span>\r\n postgresql_setup_stage<\/span>:<\/span> \"<\/span>{{<\/span> (pgpool2_backend_clustering_mode<\/span> ==<\/span> 'streaming_replication')<\/span> |<\/span> ternary('write_recovery_conf',<\/span> 'basebackup')<\/span> }}\"<\/span>\r\n roles<\/span>:<\/span>\r\n -<\/span> common<\/span>\r\n -<\/span> hosts<\/span>\r\n -<\/span> locale<\/span>\r\n -<\/span> postgresql<\/span>\r\n -<\/span> pgpool2<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u4ee5\u4e0b\u662f\u9488\u5bf9PostgreSQL\u7684\u4e0d\u540c\u96c6\u7fa4\u914d\u7f6e\u7684\u591a\u79cd\u9009\u62e9\u3002\u6bcf\u6b21\u6784\u5efa\u90fd\u5f88\u7e41\u7410\uff0c\u6240\u4ee5\u6211\u4e2a\u4eba\u4f7f\u7528Ansible\u8fdb\u884c\u81ea\u52a8 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-42071","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
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