{"id":201585,"date":"2025-05-10T08:59:52","date_gmt":"2025-05-10T00:59:52","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201585\/"},"modified":"2025-05-10T08:59:52","modified_gmt":"2025-05-10T00:59:52","slug":"redis%e5%ae%9e%e7%8e%b0sentinel%e5%93%a8%e5%85%b5%e6%9e%b6%e6%9e%84%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201585\/","title":{"rendered":"redis\u5b9e\u73b0sentinel\u54e8\u5175\u67b6\u6784\u7684\u65b9\u6cd5"},"content":{"rendered":"

<\/b> <\/p>\n

redis\u5b9e\u73b0sentinel\u54e8\u5175\u67b6\u6784\u7684\u65b9\u6cd5<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u5bf9\u4e8e\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0cgolang\u5b66\u4e60\u7f51\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300aredis\u5b9e\u73b0sentinel\u54e8\u5175\u67b6\u6784\u7684\u65b9\u6cd5\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\u67b6\u6784\u3001Redis\u54e8\u5175\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01<\/p>\n

1\u3001redis\u54e8\u5175\uff08Sentinel\uff09<\/h2>\n

1.1\u3001redis\u96c6\u7fa4\u4ecb\u7ecd<\/h3>\n

\u524d\u9762\u6587\u7ae0\u8bb2\u7684\u4e3b\u4ece\u590d\u5236\u96c6\u7fa4\u662f\u65e0\u6cd5\u5b9e\u73b0master\u548cslave\u89d2\u8272\u7684\u81ea\u52a8\u5207\u6362\u7684\uff0c\u5982\u679cmaster\u8282\u70b9\u51fa\u73b0\u73b0redis\u670d\u52a1\u5f02\u5e38\u3001\u4e3b\u673a\u65ad\u7535\u3001\u78c1\u76d8\u635f\u574f\u7b49\u95ee\u9898\u5bfc\u81f4master\u65e0\u6cd5\u4f7f\u7528\uff0c\u800credis\u4e3b\u4ece\u590d\u5236\u65e0\u6cd5\u5b9e\u73b0\u81ea\u52a8\u7684\u6545\u969c\u8f6c\u79fb(\u5c06slave \u81ea\u52a8\u63d0\u5347\u4e3a\u65b0master)\uff0c\u9700\u8981\u624b\u52a8\u4fee\u6539\u73af\u5883\u914d\u7f6e,\u624d\u80fd\u5207\u6362\u5230slave redis\u670d\u52a1\u5668\uff0c\u53e6\u5916\u5f53\u5355\u53f0Redis\u670d\u52a1\u5668\u6027\u80fd\u65e0\u6cd5\u6ee1\u8db3\u4e1a\u52a1\u5199\u5165\u9700\u6c42\u7684\u65f6\u5019,\u4e5f\u65e0\u6cd5\u6a2a\u5411\u6269\u5c55Redis\u670d\u52a1\u7684\u5e76\u884c\u5199\u5165\u6027\u80fd\u3002
\u9700\u8981\u89e3\u51b3\u4ee5\u4e0a\u7684\u4e24\u4e2a\u6838\u5fc3\u95ee\u9898\uff1a<\/p>\n

    \n
  • master\u548cslave\u89d2\u8272\u7684\u65e0\u7f1d\u5207\u6362\uff0c\u8ba9\u4e1a\u52a1\u65e0\u611f\u77e5\u4ece\u800c\u4e0d\u5f71\u54cd\u4e1a\u52a1\u4f7f\u7528\uff1b<\/li>\n
  • \u53ef\u6a2a\u5411\u52a8\u6001\u6269\u5c55Redis\u670d\u52a1\u5668\uff0c\u4ece\u800c\u5b9e\u73b0\u591a\u53f0\u670d\u52a1\u5668\u5e76\u884c\u5199\u5165\u4ee5\u5b9e\u73b0\u66f4\u9ad8\u5e76\u53d1\u7684\u76ee\u7684\u3002<\/li>\n<\/ul>\n

    Redis\u96c6\u7fa4\u5b9e\u73b0\u7684\u65b9\u5f0f\uff1a<\/p>\n

      \n
    • \u5ba2\u6237\u7aef\u5206\u7247: \u7531\u5e94\u7528\u51b3\u5b9a\u5c06\u4e0d\u540c\u7684KEY\u53d1\u9001\u5230\u4e0d\u540c\u7684Redis\u670d\u52a1\u5668<\/li>\n
    • \u4ee3\u7406\u5206\u7247: \u7531\u4ee3\u7406\u51b3\u5b9a\u5c06\u4e0d\u540c\u7684KEY\u53d1\u9001\u5230\u4e0d\u540c\u7684Redis\u670d\u52a1\u5668,\u4ee3\u7406\u7a0b\u5e8f\u5982:codis,twemproxy\u7b49<\/li>\n
    • Redis Cluster<\/li>\n<\/ul>\n

      1.2\u3001redis\u54e8\u5175\uff08Sentinel\uff09\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n

      Sentinel\u53ef\u4ee5\u7ba1\u7406\u591a\u4e2aredis\u4e3b\u4ece\u96c6\u7fa4<\/p>\n

      <\/p>\n

      <\/p>\n

      Sentinel \u8fdb\u7a0b\u662f\u7528\u4e8e\u76d1\u63a7redis\u96c6\u7fa4\u4e2dMaster\u4e3b\u670d\u52a1\u5668\u5de5\u4f5c\u7684\u72b6\u6001\uff0c\u5728Master\u4e3b\u670d\u52a1\u5668\u53d1\u751f\u6545\u969c\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u5b9e\u73b0Master\u548cSlave\u670d\u52a1\u5668\u7684\u5207\u6362\uff0c\u4fdd\u8bc1\u7cfb\u7edf\u7684\u9ad8\u53ef\u7528\uff0c\u6b64\u529f\u80fd\u5728redis2.6+\u7684\u7248\u672c\u5df2\u5f15\u7528\uff0cRedis\u7684\u54e8\u5175\u6a21\u5f0f\u5230\u4e862.8\u7248\u672c\u4e4b\u540e\u5c31\u7a33\u5b9a\u4e86\u4e0b\u6765\u3002\u4e00\u822c\u5728\u751f\u4ea7\u73af\u5883\u4e5f\u5efa\u8bae\u4f7f\u7528Redis\u76842.8\u7248\u672c\u7684\u4ee5\u540e\u7248\u672c<\/p>\n

      \u54e8\u5175(Sentinel) \u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u7cfb\u7edf\uff0c\u53ef\u4ee5\u5728\u4e00\u4e2a\u67b6\u6784\u4e2d\u8fd0\u884c\u591a\u4e2a\u54e8\u5175(sentinel) \u8fdb\u7a0b\uff0c\u8fd9\u4e9b\u8fdb\u7a0b\u4f7f\u7528\u6d41\u8a00\u534f\u8bae(gossip protocols)\u6765\u63a5\u6536\u5173\u4e8eMaster\u4e3b\u670d\u52a1\u5668\u662f\u5426\u4e0b\u7ebf\u7684\u4fe1\u606f\uff0c\u5e76\u4f7f\u7528\u6295\u7968\u534f\u8bae(Agreement Protocols)\u6765\u51b3\u5b9a\u662f\u5426\u6267\u884c\u81ea\u52a8\u6545\u969c\u8fc1\u79fb,\u4ee5\u53ca\u9009\u62e9\u54ea\u4e2aSlave\u4f5c\u4e3a\u65b0\u7684Master<\/p>\n

      \u6bcf\u4e2a\u54e8\u5175(Sentinel)\u8fdb\u7a0b\u4f1a\u5411\u5176\u5b83\u54e8\u5175(Sentinel)\u3001Master\u3001Slave\u5b9a\u65f6\u53d1\u9001\u6d88\u606f\uff0c\u4ee5\u786e\u8ba4\u5bf9\u65b9\u662f\u5426\u201d\u6d3b\u201d\u7740\uff0c\u5982\u679c\u53d1\u73b0\u5bf9\u65b9\u5728\u6307\u5b9a\u914d\u7f6e\u65f6\u95f4(\u6b64\u9879\u53ef\u914d\u7f6e)\u5185\u672a\u5f97\u5230\u56de\u5e94\uff0c\u5219\u6682\u65f6\u8ba4\u4e3a\u5bf9\u65b9\u5df2\u79bb\u7ebf\uff0c\u4e5f\u5c31\u662f\u6240\u8c13\u7684\u201d\u4e3b\u89c2\u8ba4\u4e3a\u5b95\u673a\u201d (\u4e3b\u89c2:\u662f\u6bcf\u4e2a\u6210\u5458\u90fd\u5177\u6709\u7684\u72ec\u81ea\u7684\u800c\u4e14\u53ef\u80fd\u76f8\u540c\u4e5f\u53ef\u80fd\u4e0d\u540c\u7684\u610f\u8bc6)\uff0c\u82f1\u6587\u540d\u79f0\uff1aSubjective Down\uff0c\u7b80\u79f0SDOWN<\/p>\n

      \u6709\u4e3b\u89c2\u5b95\u673a\uff0c\u5bf9\u5e94\u7684\u6709\u5ba2\u89c2\u5b95\u673a\u3002\u5f53\u201c\u54e8\u5175\u7fa4\u201d\u4e2d\u7684\u591a\u6570Sentinel\u8fdb\u7a0b\u5728\u5bf9Master\u4e3b\u670d\u52a1\u5668\u505a\u51faSDOWN \u7684\u5224\u65ad\uff0c\u5e76\u4e14\u901a\u8fc7 SENTINEL is-master-down-by-addr \u547d\u4ee4\u4e92\u76f8\u4ea4\u6d41\u4e4b\u540e\uff0c\u5f97\u51fa\u7684Master Server\u4e0b\u7ebf\u5224\u65ad\uff0c\u8fd9\u79cd\u65b9\u5f0f\u5c31\u662f\u201c\u5ba2\u89c2\u5b95\u673a\u201d(\u5ba2\u89c2:\u662f\u4e0d\u4f9d\u8d56\u4e8e\u67d0\u79cd\u610f\u8bc6\u800c\u5df2\u7ecf\u5b9e\u9645\u5b58\u5728\u7684\u4e00\u5207\u4e8b\u7269)\uff0c\u82f1\u6587\u540d\u79f0\u662f\uff1aObjectively Down\uff0c \u7b80\u79f0 ODOWN
      \u901a\u8fc7\u4e00\u5b9a\u7684vote\u7b97\u6cd5\uff0c\u4ece\u5269\u4e0b\u7684slave\u4ece\u670d\u52a1\u5668\u8282\u70b9\u4e2d\uff0c\u9009\u4e00\u53f0\u63d0\u5347\u4e3aMaster\u670d\u52a1\u5668\u8282\u70b9\uff0c\u7136\u540e\u81ea\u52a8\u4fee\u6539\u76f8\u5173\u914d\u7f6e\uff0c\u5e76\u5f00\u542f\u6545\u969c\u8f6c\u79fb\uff08failover\uff09<\/p>\n

      Sentinel \u673a\u5236\u53ef\u4ee5\u89e3\u51b3master\u548cslave\u89d2\u8272\u7684\u81ea\u52a8\u5207\u6362\u95ee\u9898\uff0c\u4f46\u5355\u4e2a Master \u7684\u6027\u80fd\u74f6\u9888\u95ee\u9898\u65e0\u6cd5\u89e3\u51b3,\u7c7b\u4f3c\u4e8eMySQL\u4e2d\u7684MHA\u529f\u80fd<\/p>\n

      Redis Sentinel\u4e2d\u7684Sentinel\u8282\u70b9\u4e2a\u6570\u5e94\u8be5\u4e3a\u5927\u4e8e\u7b49\u4e8e3\u4e14\u6700\u597d\u4e3a\u5947\u6570<\/p>\n

      \u5ba2\u6237\u7aef\u521d\u59cb\u5316\u65f6\u8fde\u63a5\u7684\u662fSentinel\u8282\u70b9\u96c6\u5408\uff0c\u4e0d\u518d\u662f\u5177\u4f53\u7684Redis\u8282\u70b9\uff0c\u4f46Sentinel\u53ea\u662f\u914d\u7f6e\u4e2d\u5fc3\u4e0d\u662f\u4ee3\u7406\u3002<\/p>\n

      Redis Sentinel\u8282\u70b9\u4e0e\u666e\u901aredis\u6ca1\u6709\u533a\u522b,\u8981\u5b9e\u73b0\u8bfb\u5199\u5206\u79bb\u4f9d\u8d56\u4e8e\u5ba2\u6237\u7aef\u7a0b\u5e8f<\/p>\n

      redis 3.0\u4e4b\u524d\u7248\u672c\u4e2d,\u751f\u4ea7\u73af\u5883\u4e00\u822c\u4f7f\u7528\u54e8\u5175\u6a21\u5f0f,3.0\u540e\u63a8\u51faredis cluster\u529f\u80fd,\u53ef\u4ee5\u652f\u6301\u66f4\u5927\u89c4\u6a21\u7684\u751f\u4ea7\u73af\u5883sentinel\u4e2d\u7684\u4e09\u4e2a\u5b9a\u65f6\u4efb\u52a1\uff1a<\/p>\n

      1.2.1sentinel\u4e2d\u7684\u4e09\u4e2a\u5b9a\u65f6\u4efb\u52a1\uff1a<\/h4>\n
        \n
      • \u6bcf10\u79d2\u6bcf\u4e2asentinel\u5bf9master\u548cslave\u6267\u884cinfo\uff0c\u53d1\u73b0slave\u8282\u70b9\uff0c\u786e\u8ba4\u4e3b\u4ece\u5173\u7cfb\u3002<\/li>\n
      • \u6bcf2\u79d2\u6bcf\u4e2asentinel\u901a\u8fc7master\u8282\u70b9\u7684channel\u4ea4\u6362\u4fe1\u606f(pub\/sub)\u901a\u8fc7sentinel__:hello\u9891\u9053\u4ea4\u4e92\uff0c\u4ea4\u4e92\u5bf9\u8282\u70b9\u7684\u201c\u770b\u6cd5\u201d\u548c\u81ea\u8eab\u4fe1\u606f<\/li>\n
      • \u6bcf1\u79d2\u6bcf\u4e2asentinel\u5bf9\u5176\u4ed6sentinel\u548credis\u6267\u884cping<\/li>\n<\/ul>\n

        1.3\u3001\u5b9e\u73b0\u54e8\u5175<\/h3>\n

        <\/p>\n

        \u73af\u5883\u51c6\u5907\uff1a<\/p>\n

        \u51c6\u5907\u4e09\u53f0\u4e3b\u673a\u642d\u5efa\u4e3b\u4ece\u96c6\u7fa4\uff0c\u518d\u5728\u6bcf\u4e2a\u673a\u5668\u4e0a\u642d\u5efasentinel<\/p>\n\n\n\n\n\n\n
        IP<\/td>\nredis\u7248\u672c<\/td>\n\u4e3b\u673a\u540d<\/td>\n<\/tr>\n
        10.0.0.101<\/td>\nredis-5.0.14<\/td>\nnode1<\/td>\n<\/tr>\n
        10.0.0.102<\/td>\nredis-5.0.14<\/td>\nnode2<\/td>\n<\/tr>\n
        10.0.0.103<\/td>\nredis-5.0.14<\/td>\nnode3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        1.3.1\u3001\u5b9e\u73b0\u54e8\u5175\u9700\u8981\u5148\u5b9e\u73b0\u4e00\u4e0b\u4e3b\u4ece\u590d\u5236\u7684\u67b6\u6784<\/h4>\n

        \u54e8\u5175\u7684\u524d\u63d0\u662f\u5df2\u7ecf\u5b9e\u73b0\u4e86\u4e00\u4e2aredis\u7684\u4e3b\u4ece\u590d\u5236\u7684\u8fd0\u884c\u73af\u5883\uff0c\u4ece\u800c\u5b9e\u73b0\u4e00\u4e2a\u4e00\u4e3b\u4e24\u4ece\u57fa\u4e8e\u54e8\u5175\u7684\u9ad8\u53ef\u7528redis\u67b6\u6784
        \u6ce8\u610f: master\u7684\u914d\u7f6e\u6587\u4ef6\u4e2dmasterauth\u548cslave\u90fd\u5fc5\u987b\u76f8\u540c<\/p>\n","protected":false},"excerpt":{"rendered":"

        redis\u5b9e\u73b0sentinel\u54e8...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-201585","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=201585"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201585\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}