{"id":34329,"date":"2022-12-08T02:16:30","date_gmt":"2023-10-04T05:34:42","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-redis-sentinel-%e5%ae%9e%e7%8e%b0%e8%87%aa%e5%8a%a8%e6%95%85%e9%9a%9c%e8%bd%ac%e7%a7%bb\/"},"modified":"2024-04-29T04:13:16","modified_gmt":"2024-04-28T20:13:16","slug":"%e4%bd%bf%e7%94%a8-redis-sentinel-%e5%ae%9e%e7%8e%b0%e8%87%aa%e5%8a%a8%e6%95%85%e9%9a%9c%e8%bd%ac%e7%a7%bb","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-redis-sentinel-%e5%ae%9e%e7%8e%b0%e8%87%aa%e5%8a%a8%e6%95%85%e9%9a%9c%e8%bd%ac%e7%a7%bb\/","title":{"rendered":"\u4f7f\u7528 Redis Sentinel \u5b9e\u73b0\u81ea\u52a8\u6545\u969c\u8f6c\u79fb"},"content":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662f\u4ece\u6211\u81ea\u5df1\u7684\u535a\u5ba2\u6587\u7ae0\u4e2d\u62bd\u53d6\u51fa\u6765\u7684\u4e0eRedis Sentinel\u76f8\u5173\u7684\u5185\u5bb9\u3002\u5982\u679c\u6709\u8ffd\u52a0\u5185\u5bb9\uff0c\u6211\u4f1a\u5728\u535a\u5ba2\u4e0a\u7ee7\u7eed\u5199\u3002 &#8220;Redis\u76d1\u63a7\/\u5206\u6790\u5de5\u5177\u7efc\u8ff0&#8221; http:\/\/rest-term.com\/archives\/3045\/<\/p>\n<h1>\u54e8\u5175\u6a21\u5f0f\u7684 Redis<\/h1>\n<p>\u8fd9\u662f\u4e00\u4e2a\u7ba1\u7406\u670d\u52a1\u5668(redis-sentinel)\uff0c\u5b83\u5728Redis\u5b98\u65b9\u9879\u76ee\u4e2d\u8fdb\u884c\u5f00\u53d1\uff0c\u63d0\u4f9bRedis\u670d\u52a1\u5668\u7684\u5b58\u6d3b\u76d1\u63a7\/\u901a\u77e5\u548c\u81ea\u52a8\u6545\u969c\u8f6c\u79fb\u529f\u80fd\u3002\u5b83\u4ecev2.4.16\u62162.6.0-rc6\u53ca\u66f4\u9ad8\u7248\u672c\u5f00\u59cb\u53ef\u7528\u3002\u6211\u4eec\u5c06\u53c2\u8003\u5b98\u65b9\u6587\u6863\u8fdb\u884c\u64cd\u4f5c\u9a8c\u8bc1\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u74b0\u5883:<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">CentOS 5.9 (x86_64), Redis 2.6.10<\/ul>\n<h2>\u6784\u6210<\/h2>\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u4e24\u4e2a\u4e3b\u673a\uff0c\u7ec4\u62102\u4e2a\u8fdb\u7a0b\u7684\u4ece\u5c5e\u8282\u70b9\uff0c\u5e76\u4f7f\u75283\u4e2a\u8fdb\u7a0b\u7684\u54e8\u5175\u8282\u70b9\u8fdb\u884c\u8bd5\u9a8c\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Master db0:6379<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Slave db0:6380, db1:6379<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Sentinel db0:26379, db0:23680, db1:26379<\/ul>\n<h2>\u8bbe\u5b9a<\/h2>\n<pre class=\"post-pre\"><code><span class=\"c1\"># port &lt;sentinel-port&gt;\r\n<\/span><span class=\"n\">port<\/span> <span class=\"mi\">26379<\/span>\r\n<span class=\"c1\"># sentinel monitor &lt;master-name&gt; &lt;ip&gt; &lt;redis-port&gt; &lt;quorum&gt;\r\n<\/span><span class=\"n\">sentinel<\/span> <span class=\"n\">monitor<\/span> <span class=\"n\">mymaster<\/span> <span class=\"n\">db0<\/span> <span class=\"mi\">6379<\/span> <span class=\"mi\">2<\/span>\r\n<span class=\"c1\"># sentinel down-after-milliseconds &lt;master-name&gt; &lt;milliseconds&gt;\r\n<\/span><span class=\"n\">sentinel<\/span> <span class=\"n\">down<\/span><span class=\"o\">-<\/span><span class=\"n\">after<\/span><span class=\"o\">-<\/span><span class=\"n\">milliseconds<\/span> <span class=\"n\">mymaster<\/span> <span class=\"mi\">5000<\/span>\r\n<span class=\"c1\"># sentinel failover-timeout &lt;master-name&gt; &lt;milliseconds&gt;\r\n<\/span><span class=\"n\">sentinel<\/span> <span class=\"n\">failover<\/span><span class=\"o\">-<\/span><span class=\"n\">timeout<\/span> <span class=\"n\">mymaster<\/span> <span class=\"mi\">900000<\/span>\r\n<span class=\"c1\"># sentinel can-failover &lt;master-name&gt; &lt;yes|no&gt;\r\n<\/span><span class=\"n\">sentinel<\/span> <span class=\"n\">can<\/span><span class=\"o\">-<\/span><span class=\"n\">failover<\/span> <span class=\"n\">mymaster<\/span> <span class=\"n\">yes<\/span>\r\n<span class=\"c1\"># sentinel parallel-syncs &lt;master-name&gt; &lt;numslaves&gt;\r\n<\/span><span class=\"n\">sentinel<\/span> <span class=\"n\">parallel<\/span><span class=\"o\">-<\/span><span class=\"n\">syncs<\/span> <span class=\"n\">mymaster<\/span> <span class=\"mi\">1<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u662f\u5173\u4e8e\u6bcf\u4e2a\u8bbe\u7f6e\u9879\u76ee\u7684\u8868\u683c\u3002 Sentinel\u901a\u8fc7\u6240\u8c13\u7684Quorum-Based\u6295\u7968\u65b9\u6cd5\u6765\u76d1\u89c6\u96c6\u7fa4\u3002\u591a\u4e2aSentinel\u76d1\u89c6Master\uff0c\u5f53\u5176\u4e2d\u8d85\u8fc7\u9608\u503c\u6570\u91cf\u7684Sentinel\u68c0\u6d4b\u5230Master\u5b95\u673a\u65f6\uff0c\u5c06\u542f\u52a8\u6545\u969c\u8f6c\u79fb\u5904\u7406\u3002<\/p>\n<div>\n<div class=\"post-table\">\u8a2d\u5b9a\u9805\u76ee\u6982\u8981monitorMaster\u306e\u30db\u30b9\u30c8\u3068\u30dd\u30fc\u30c8\u304a\u3088\u3073\u72b6\u614b\u304c<strong>ODOWN(objectively down)<\/strong>\u306b\u79fb\u884c\u3059\u308b\u305f\u3081\u306e\u5b9a\u8db3\u6570(quorum)down-after-millisecondsMaster\/Slave\u306e\u30c0\u30a6\u30f3\u691c\u77e5\u5f8c\u3001\u72b6\u614b\u304c<strong>SDOWN(subjectively down)<\/strong>\u306b\u79fb\u884c\u3059\u308b\u307e\u3067\u306e\u6642\u9593(ms)failover-timeout\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u51e6\u7406\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8(ms)can-failover\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u51e6\u7406\u304c\u5b9f\u884c\u53ef\u80fd\u304b(yes\/no)parallel-syncsSlave\u3092Master\u306b\u6607\u683c\u3055\u305b\u305f\u5f8c\u3001\u3044\u304f\u3064\u306eSlave\u3068\u540c\u671f\u3055\u305b\u308b\u304b<\/div>\n<\/div>\n<p>Sentinel\u5c06\u5bf9Master\u548cSlave\u8fdb\u884c\u751f\u6b7b\u72b6\u6001\u76d1\u6d4b\uff0c\u4f46\u53ea\u6709Master\u7684\u72b6\u6001\u8f6c\u4e3aODOWN\u65f6\u8bf7\u6ce8\u610f\u3002\u5c06can-failover\u8bbe\u7f6e\u4e3ano\u542f\u52a8\u7684Sentinel\u8fdb\u7a0b\u4e0d\u4f1a\u6267\u884c\u6545\u969c\u8f6c\u79fb\u8fc7\u7a0b\uff08\u5c06\u7531\u5176\u4ed6Sentinel\u8d1f\u8d23\uff09\uff0c\u53ea\u8fdb\u884c\u81ea\u8eab\u7684\u5b95\u673a\u68c0\u6d4b\u548c\u6295\u7968\u5904\u7406\u3002<\/p>\n<h2>\u5f00\u52a8<\/h2>\n<p>\u5728\u542f\u52a8Sentinel\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u590d\u5236\u6b63\u5728\u8fd0\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">redis<\/span> <span class=\"n\">db0<\/span><span class=\"p\">:<\/span><span class=\"mi\">6379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">info<\/span> <span class=\"n\">replication<\/span>\r\n<span class=\"c1\"># Replication\r\n<\/span><span class=\"n\">role<\/span><span class=\"p\">:<\/span><span class=\"n\">master<\/span>\r\n<span class=\"n\">connected_slaves<\/span><span class=\"p\">:<\/span><span class=\"mi\">1<\/span>\r\n<span class=\"n\">slave0<\/span><span class=\"p\">:<\/span><span class=\"n\">db0<\/span><span class=\"p\">,<\/span><span class=\"mi\">6380<\/span><span class=\"p\">,<\/span><span class=\"n\">online<\/span>\r\n<span class=\"n\">slave1<\/span><span class=\"p\">:<\/span><span class=\"n\">db1<\/span><span class=\"p\">,<\/span><span class=\"mi\">6379<\/span><span class=\"p\">,<\/span><span class=\"n\">online<\/span>\r\n<\/code><\/pre>\n<p>\u63a5\u7740\u542f\u52a8\u4e09\u4e2aSentinel\u8fdb\u7a0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">$<\/span> <span class=\"n\">redis<\/span><span class=\"o\">-<\/span><span class=\"n\">sentinel<\/span> <span class=\"o\">\/<\/span><span class=\"n\">etc<\/span><span class=\"o\">\/<\/span><span class=\"n\">redis<\/span><span class=\"o\">\/<\/span><span class=\"n\">sentinel<\/span><span class=\"p\">.<\/span><span class=\"n\">conf<\/span>\r\n<span class=\"c1\">## \u307e\u305f\u306f redis-server \u3092sentinel\u30e2\u30fc\u30c9\u3067\u8d77\u52d5\u3059\u308b\r\n<\/span><span class=\"err\">$<\/span> <span class=\"n\">redis<\/span><span class=\"o\">-<\/span><span class=\"n\">server<\/span> <span class=\"o\">\/<\/span><span class=\"n\">etc<\/span><span class=\"o\">\/<\/span><span class=\"n\">redis<\/span><span class=\"o\">\/<\/span><span class=\"n\">sentinel<\/span><span class=\"p\">.<\/span><span class=\"n\">conf<\/span> <span class=\"o\">--<\/span><span class=\"n\">sentinel<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u65e5\u5fd7\u4e2d\u53ef\u4ee5\u786e\u8ba4\u4e0e\u6bcf\u4e2a Slave \u548c Sentinel \u8fdb\u884c\u4e86\u8fde\u63a5\u3002<\/p>\n<pre class=\"post-pre\"><code>[19069] 14 May 16:30:31.909 * +slave slave db1:6379 db1 6379 @ mymaster db0 6379\r\n[19069] 14 May 16:30:31.909 * +slave slave db0:6380 db0 6380 @ mymaster db0 6379\r\n[19069] 14 May 16:30:38.320 * +sentinel sentinel db0:26380 db0 26380 @ mymaster db0 6379\r\n[19069] 14 May 16:30:39.655 * +sentinel sentinel db1:26379 db1 26379 @ mymaster db0 6379\r\n<\/code><\/pre>\n<p>\u6b64\u5916\uff0c\u5728Sentinel\u542f\u52a8\u540e\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528INFO\u547d\u4ee4\u6765\u67e5\u770b\u4e0eSentinel\u76f8\u5173\u7684\u4fe1\u606f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">redis<\/span> <span class=\"n\">db0<\/span><span class=\"p\">:<\/span><span class=\"mi\">26379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">info<\/span> <span class=\"n\">sentinel<\/span>\r\n<span class=\"c1\"># Sentinel\r\n<\/span><span class=\"n\">sentinel_masters<\/span><span class=\"p\">:<\/span><span class=\"mi\">1<\/span>\r\n<span class=\"n\">sentinel_tilt<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span>\r\n<span class=\"n\">sentinel_running_scripts<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span>\r\n<span class=\"n\">sentinel_scripts_queue_length<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span>\r\n<span class=\"n\">master0<\/span><span class=\"p\">:<\/span><span class=\"n\">name<\/span><span class=\"o\">=<\/span><span class=\"n\">mymaster<\/span><span class=\"p\">,<\/span><span class=\"n\">status<\/span><span class=\"o\">=<\/span><span class=\"n\">ok<\/span><span class=\"p\">,<\/span><span class=\"n\">address<\/span><span class=\"o\">=<\/span><span class=\"n\">db0<\/span><span class=\"p\">:<\/span><span class=\"mi\">6379<\/span><span class=\"p\">,<\/span><span class=\"n\">slaves<\/span><span class=\"o\">=<\/span><span class=\"mi\">2<\/span><span class=\"p\">,<\/span><span class=\"n\">sentinels<\/span><span class=\"o\">=<\/span><span class=\"mi\">3<\/span>\r\n<\/code><\/pre>\n<p>\u53ea\u9700\u67e5\u770b\u5e95\u90e8\u9879\u76ee\uff0c\u5373\u53ef\u76d1\u89c6Sentinel\u8fdb\u7a0b\u672c\u8eab\u3002<\/p>\n<p>\u4e3a\u4e86\u9a8c\u8bc1\u6545\u969c\u8f6c\u79fb\u5904\u7406\u7684\u64cd\u4f5c\uff0c\u6b64\u5904\u5c06\u5173\u95ed\u4e3b\u670d\u52a1\u5668\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">redis<\/span> <span class=\"n\">db0<\/span><span class=\"p\">:<\/span><span class=\"mi\">6379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">shutdown<\/span>\r\n<\/code><\/pre>\n<p>\u30ed\u30b0\u306b\u3066\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u51e6\u7406\u306e\u9032\u6357\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>[19069] 14 May 16:30:51.170 # +sdown master mymaster db0 6379\r\n[19069] 14 May 16:30:52.386 # +odown master mymaster db0 6379 #quorum 2\/2\r\n[19069] 14 May 16:30:52.386 # +failover-triggered master mymaster db0 6379\r\n[19069] 14 May 16:30:52.386 # +failover-state-wait-start master mymaster db0 6379 #starting in 13910 milliseconds\r\n[19069] 14 May 16:31:06.379 # +failover-state-select-slave master mymaster db0 6379\r\n[19069] 14 May 16:31:06.480 # +selected-slave slave db1:6379 db1 6379 @ mymaster db0 6379\r\n[19069] 14 May 16:31:06.480 * +failover-state-send-slaveof-noone slave db1:6379 db1 6379 @ mymaster db0 6379\r\n[19069] 14 May 16:31:06.583 * +failover-state-wait-promotion slave db1:6379 db1 6379 @ mymaster db0 6379\r\n[19069] 14 May 16:31:06.901 # +promoted-slave slave db1:6379 db1 6379 @ mymaster db0 6379\r\n[19069] 14 May 16:31:06.902 # +failover-state-reconf-slaves master mymaster db0 6379\r\n[19069] 14 May 16:31:06.991 * +slave-reconf-sent slave db0:6380 db0 6380 @ mymaster db0 6379\r\n[19069] 14 May 16:31:07.294 * +slave-reconf-inprog slave db0:6380 db0 6380 @ mymaster db0 6379\r\n[19069] 14 May 16:31:08.316 * +slave-reconf-done slave db0:6380 db0 6380 @ mymaster db0 6379\r\n[19069] 14 May 16:31:08.417 # +failover-end master mymaster db0 6379\r\n[19069] 14 May 16:31:08.417 # +switch-master mymaster db0 6379 db1 6379\r\n[19069] 14 May 16:31:08.548 * +slave slave db0:6380 db0 6380 @ mymaster db1 6379\r\n[19069] 14 May 16:31:09.068 * +sentinel sentinel db0:26380 db0 26380 @ mymaster db1 6379\r\n[19069] 14 May 16:31:12.258 * +sentinel sentinel db1:26379 db1 26379 @ mymaster db1 6379\r\n<\/code><\/pre>\n<p>Sentinel\u304cMaster\u306e\u30c0\u30a6\u30f3\u3092\u691c\u77e5\u3059\u308b\u3068\u72b6\u614b\u304cSDOWN\u306b\u3001quorum\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u6307\u5b9a\u3057\u305f\u6570\u306eSDOWN\u304c\u63c3\u3046\u3068\u6b21\u306fODOWN\u3078\u3068\u9077\u79fb\u3001\u305d\u306e\u5f8c\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u51e6\u7406\u304c\u958b\u59cb\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u6700\u540e\u786e\u4fdd\u65b0\u7684\u4e3b\u8282\u70b9\u548c\u4ece\u8282\u70b9\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">redis<\/span> <span class=\"n\">db1<\/span><span class=\"p\">:<\/span><span class=\"mi\">6379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">info<\/span> <span class=\"n\">replication<\/span>\r\n<span class=\"c1\"># Replication\r\n<\/span><span class=\"n\">role<\/span><span class=\"p\">:<\/span><span class=\"n\">master<\/span>\r\n<span class=\"n\">connected_slaves<\/span><span class=\"p\">:<\/span><span class=\"mi\">1<\/span>\r\n<span class=\"n\">slave0<\/span><span class=\"p\">:<\/span><span class=\"n\">db0<\/span><span class=\"p\">,<\/span><span class=\"mi\">6380<\/span><span class=\"p\">,<\/span><span class=\"n\">online<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u5df2\u7ecf\u5c1d\u8bd5\u8fc7\u4e86\u4ee5\u4e0a\u548c Sentinel \u7684\u6545\u969c\u8f6c\u79fb\u529f\u80fd\u7684\u64cd\u4f5c\u786e\u8ba4\u3002<\/p>\n<h2>\u54e8\u5175 API<\/h2>\n<p>\u7531\u4e8eSentinel\u63d0\u4f9b\u4e86\u4e00\u4e9bAPI\uff0c\u6240\u4ee5\u6211\u60f3\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">## SENTINEL masters\r\n# \u76e3\u8996\u5bfe\u8c61\u306eMaster\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u78ba\u8a8d\r\n<\/span><span class=\"n\">redis<\/span> <span class=\"mf\">127.0<\/span><span class=\"p\">.<\/span><span class=\"mf\">0.1<\/span><span class=\"p\">:<\/span><span class=\"mi\">26379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">sentinel<\/span> <span class=\"n\">masters<\/span>\r\n<span class=\"mi\">1<\/span><span class=\"p\">)<\/span>  <span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"name\"<\/span>\r\n    <span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"mymaster\"<\/span>\r\n    <span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"ip\"<\/span>\r\n    <span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"127.0.0.1\"<\/span>\r\n    <span class=\"mi\">5<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"port\"<\/span>\r\n    <span class=\"mi\">6<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"6379\"<\/span>\r\n    <span class=\"mi\">7<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"runid\"<\/span>\r\n    <span class=\"mi\">8<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"b3b31e6c6d1fbb0cec5d179fd666ce00ea103746\"<\/span>\r\n    <span class=\"mi\">9<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"flags\"<\/span>\r\n   <span class=\"mi\">10<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"master\"<\/span>\r\n   <span class=\"mi\">11<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"pending-commands\"<\/span>\r\n   <span class=\"mi\">12<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"0\"<\/span>\r\n   <span class=\"mi\">13<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"last-ok-ping-reply\"<\/span>\r\n   <span class=\"mi\">14<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"568\"<\/span>\r\n   <span class=\"mi\">15<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"last-ping-reply\"<\/span>\r\n   <span class=\"mi\">16<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"568\"<\/span>\r\n   <span class=\"mi\">17<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"info-refresh\"<\/span>\r\n   <span class=\"mi\">18<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"9745\"<\/span>\r\n   <span class=\"mi\">19<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"num-slaves\"<\/span>\r\n   <span class=\"mi\">20<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"1\"<\/span>\r\n   <span class=\"mi\">21<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"num-other-sentinels\"<\/span>\r\n   <span class=\"mi\">22<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"1\"<\/span>\r\n   <span class=\"mi\">23<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"quorum\"<\/span>\r\n   <span class=\"mi\">24<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"2\"<\/span>\r\n\r\n<span class=\"c1\">## SENTINEL slaves &lt;master name&gt;\r\n# Slave\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u78ba\u8a8d\r\n<\/span><span class=\"n\">redis<\/span> <span class=\"mf\">127.0<\/span><span class=\"p\">.<\/span><span class=\"mf\">0.1<\/span><span class=\"p\">:<\/span><span class=\"mi\">26379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">sentinel<\/span> <span class=\"n\">slaves<\/span> <span class=\"n\">mymaster<\/span>\r\n<span class=\"mi\">1<\/span><span class=\"p\">)<\/span>  <span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"name\"<\/span>\r\n    <span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"127.0.0.1:6380\"<\/span>\r\n    <span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"ip\"<\/span>\r\n    <span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"127.0.0.1\"<\/span>\r\n    <span class=\"mi\">5<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"port\"<\/span>\r\n    <span class=\"mi\">6<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"6380\"<\/span>\r\n    <span class=\"mi\">7<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"runid\"<\/span>\r\n    <span class=\"mi\">8<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"17c0f7e7e4d2af0f5f6140ea0ceb0d82d0010aed\"<\/span>\r\n    <span class=\"mi\">9<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"flags\"<\/span>\r\n   <span class=\"mi\">10<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"s_down,slave,disconnected\"<\/span>\r\n   <span class=\"mi\">11<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"pending-commands\"<\/span>\r\n   <span class=\"mi\">12<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"0\"<\/span>\r\n   <span class=\"mi\">13<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"last-ok-ping-reply\"<\/span>\r\n   <span class=\"mi\">14<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"709377\"<\/span>\r\n   <span class=\"mi\">15<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"last-ping-reply\"<\/span>\r\n   <span class=\"mi\">16<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"709377\"<\/span>\r\n   <span class=\"mi\">17<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"s-down-time\"<\/span>\r\n   <span class=\"mi\">18<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"704333\"<\/span>\r\n   <span class=\"mi\">19<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"info-refresh\"<\/span>\r\n   <span class=\"mi\">20<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"712808\"<\/span>\r\n   <span class=\"mi\">21<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"master-link-down-time\"<\/span>\r\n   <span class=\"mi\">22<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"0\"<\/span>\r\n   <span class=\"mi\">23<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"master-link-status\"<\/span>\r\n   <span class=\"mi\">24<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"ok\"<\/span>\r\n   <span class=\"mi\">25<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"master-host\"<\/span>\r\n   <span class=\"mi\">26<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"127.0.0.1\"<\/span>\r\n   <span class=\"mi\">27<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"master-port\"<\/span>\r\n   <span class=\"mi\">28<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"6379\"<\/span>\r\n   <span class=\"mi\">29<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"slave-priority\"<\/span>\r\n   <span class=\"mi\">30<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"100\"<\/span>\r\n\r\n<span class=\"c1\">## SENTINEL is-master-down-by-addr &lt;ip&gt; &lt;port&gt;\r\n# Master\u306e\u6b7b\u6d3b\u78ba\u8a8d\r\n<\/span><span class=\"n\">redis<\/span> <span class=\"mf\">127.0<\/span><span class=\"p\">.<\/span><span class=\"mf\">0.1<\/span><span class=\"p\">:<\/span><span class=\"mi\">26379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">sentinel<\/span> <span class=\"ow\">is<\/span><span class=\"o\">-<\/span><span class=\"n\">master<\/span><span class=\"o\">-<\/span><span class=\"n\">down<\/span><span class=\"o\">-<\/span><span class=\"n\">by<\/span><span class=\"o\">-<\/span><span class=\"n\">addr<\/span> <span class=\"mf\">127.0<\/span><span class=\"p\">.<\/span><span class=\"mf\">0.1<\/span> <span class=\"mi\">6379<\/span>\r\n<span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"n\">integer<\/span><span class=\"p\">)<\/span> <span class=\"mi\">0<\/span>  <span class=\"c1\">## 0:UP, 1:DOWN\r\n<\/span><span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"397dec99760d5d30043941fe4c1c35ba99e99ebf\"<\/span>  <span class=\"c1\">## Sentinel(subjective leader)\u306erun_id\r\n<\/span>\r\n<span class=\"c1\">## SENTINEL get-master-addr-by-name &lt;master name&gt;\r\n# Master\u306eIP, Port\u3092\u78ba\u8a8d\r\n<\/span><span class=\"n\">redis<\/span> <span class=\"mf\">127.0<\/span><span class=\"p\">.<\/span><span class=\"mf\">0.1<\/span><span class=\"p\">:<\/span><span class=\"mi\">26379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">sentinel<\/span> <span class=\"n\">get<\/span><span class=\"o\">-<\/span><span class=\"n\">master<\/span><span class=\"o\">-<\/span><span class=\"n\">addr<\/span><span class=\"o\">-<\/span><span class=\"n\">by<\/span><span class=\"o\">-<\/span><span class=\"n\">name<\/span> <span class=\"n\">mymaster<\/span>\r\n<span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"127.0.0.1\"<\/span>\r\n<span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"6379\"<\/span>\r\n\r\n<span class=\"c1\">## SENTINEL reset\r\n# Sentinel\u306e\u73fe\u5728\u306e\u72b6\u614b\u3092\u30ea\u30bb\u30c3\u30c8(\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u51e6\u7406\u4e2d\u3067\u3042\u3063\u3066\u3082)\r\n<\/span><span class=\"n\">redis<\/span> <span class=\"mf\">127.0<\/span><span class=\"p\">.<\/span><span class=\"mf\">0.1<\/span><span class=\"p\">:<\/span><span class=\"mi\">26379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">sentinel<\/span> <span class=\"n\">reset<\/span> <span class=\"n\">mymaster<\/span>\r\n<span class=\"p\">(<\/span><span class=\"n\">integer<\/span><span class=\"p\">)<\/span> <span class=\"mi\">1<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u8ba4\u4e3a\u5728\u521b\u5efa\u4e0e Sentinel \u76f8\u5173\u7684\u7ba1\u7406\u5de5\u5177\u65f6\uff0c\u4f7f\u7528\u652f\u6301 Sentinel API \u7684\u5ba2\u6237\u7aef\u5e93\u4f1a\u66f4\u52a0\u65b9\u4fbf\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u5173\u4e8e\u6545\u969c\u8f6c\u79fb\u5904\u7406\u884c\u4e3a\u7684\u90e8\u5206\u5185\u5bb9\u3002<\/p>\n<h2>\u5347\u8077\u5974\u96b6\u7684\u9009\u62e9<\/h2>\n<p>\u5f53\u7136\uff0c\u6211\u4eec\u8981\u627e\u7684\u662f\u4f5c\u4e3a\u4ece\u670d\u52a1\u5668\u6b63\u5e38\u8fd0\u884c\u7684\u8fdb\u7a0b\u3002\u7b80\u5355\u6765\u8bf4\uff0c\u6211\u4eec\u5e0c\u671b\u4ece\u670d\u52a1\u5668\u4e0e\u4e3b\u670d\u52a1\u5668\u8fde\u63a5\u7a33\u5b9a\uff08\u6ca1\u6709\u5b95\u673a\u65f6\u95f4\uff09\uff0c\u5e76\u4e14\u5728\u6700\u8fd1\u76845000\u6beb\u79d2\u5185\u80fd\u591f\u5bf9Sentinel\u7684PING\/INFO\u547d\u4ee4\u505a\u51fa\u54cd\u5e94\uff08\u8be6\u7ec6\u4fe1\u606f\u8bf7\u53c2\u8003\u5b98\u65b9\u6587\u6863\u548csrc\/sentinel.c\uff09\u3002<\/p>\n<p>\u5982\u679c\u6709\u591a\u4e2a\u53ef\u9009\u62e9\u7684\u53d7\u63a7\u8282\u70b9\uff0c\u5219\u9009\u62e9slave_priority\u503c\u8f83\u5c0f\u7684Slave\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">redis<\/span> <span class=\"n\">db0<\/span><span class=\"p\">:<\/span><span class=\"mi\">6380<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">info<\/span> <span class=\"n\">replication<\/span>\r\n<span class=\"c1\"># Replication\r\n<\/span><span class=\"n\">role<\/span><span class=\"p\">:<\/span><span class=\"n\">slave<\/span>\r\n<span class=\"n\">master_host<\/span><span class=\"p\">:<\/span><span class=\"mf\">127.0<\/span><span class=\"p\">.<\/span><span class=\"mf\">0.1<\/span>\r\n<span class=\"n\">master_port<\/span><span class=\"p\">:<\/span><span class=\"mi\">6379<\/span>\r\n<span class=\"n\">master_link_status<\/span><span class=\"p\">:<\/span><span class=\"n\">up<\/span>\r\n<span class=\"n\">master_last_io_seconds_ago<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span>\r\n<span class=\"n\">master_sync_in_progress<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span>\r\n<span class=\"n\">slave_priority<\/span><span class=\"p\">:<\/span><span class=\"mi\">100<\/span>  <span class=\"c1\">## &lt;- \u3053\u306e\u5024\r\n<\/span><span class=\"n\">slave_read_only<\/span><span class=\"p\">:<\/span><span class=\"mi\">1<\/span>\r\n<span class=\"n\">connected_slaves<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u5b58\u5728\u5177\u6709\u76f8\u540cslave_priority\u7684\u4ece\u8282\u70b9\uff0c\u5c06\u9009\u62e9run_id\u8f83\u5c0f\u7684\u4ece\u8282\u70b9\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">redis<\/span> <span class=\"n\">db0<\/span><span class=\"p\">:<\/span><span class=\"mi\">6380<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">info<\/span>\r\n<span class=\"c1\"># Server\r\n<\/span><span class=\"n\">redis_version<\/span><span class=\"p\">:<\/span><span class=\"mf\">2.6<\/span><span class=\"p\">.<\/span><span class=\"mi\">10<\/span>\r\n<span class=\"n\">redis_git_sha1<\/span><span class=\"p\">:<\/span><span class=\"mi\">00000000<\/span>\r\n<span class=\"n\">redis_git_dirty<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span>\r\n<span class=\"n\">redis_mode<\/span><span class=\"p\">:<\/span><span class=\"n\">standalone<\/span>\r\n<span class=\"n\">os<\/span><span class=\"p\">:<\/span><span class=\"n\">Linux<\/span> <span class=\"mf\">2.6<\/span><span class=\"p\">.<\/span><span class=\"mi\">18<\/span><span class=\"o\">-<\/span><span class=\"mf\">194.26<\/span><span class=\"p\">.<\/span><span class=\"mf\">1.<\/span><span class=\"n\">el5<\/span> <span class=\"n\">x86_64<\/span>\r\n<span class=\"n\">arch_bits<\/span><span class=\"p\">:<\/span><span class=\"mi\">64<\/span>\r\n<span class=\"n\">multiplexing_api<\/span><span class=\"p\">:<\/span><span class=\"n\">epoll<\/span>\r\n<span class=\"n\">gcc_version<\/span><span class=\"p\">:<\/span><span class=\"mf\">4.1<\/span><span class=\"p\">.<\/span><span class=\"mi\">2<\/span>\r\n<span class=\"n\">process_id<\/span><span class=\"p\">:<\/span><span class=\"mi\">17468<\/span>\r\n<span class=\"n\">run_id<\/span><span class=\"p\">:<\/span><span class=\"mi\">17<\/span><span class=\"n\">c0f7e7e4d2af0f5f6140ea0ceb0d82d0010aed<\/span>  <span class=\"c1\">## &lt;- \u3053\u306e\u5024\r\n<\/span><span class=\"n\">tcp_port<\/span><span class=\"p\">:<\/span><span class=\"mi\">6380<\/span>\r\n<span class=\"n\">uptime_in_seconds<\/span><span class=\"p\">:<\/span><span class=\"mi\">1738<\/span>\r\n<span class=\"n\">uptime_in_days<\/span><span class=\"p\">:<\/span><span class=\"mi\">0<\/span>\r\n<span class=\"n\">lru_clock<\/span><span class=\"p\">:<\/span><span class=\"mi\">538965<\/span>\r\n<\/code><\/pre>\n<p>\u622a\u6b62\u52302013\u5e746\u6708\uff0c\u76ee\u524d\u5e76\u6ca1\u6709\u516c\u5f00\u53ef\u7528\u4e8e\u66f4\u6539slave_priority\u7684API\uff0c\u56e0\u6b64\u53ea\u662f\u7b80\u5355\u5730\u9009\u62e9run_id\u8f83\u5c0f\u7684slave\u3002\u9009\u62e9slave\u7684\u7b97\u6cd5\u5c06\u6765\u53ef\u80fd\u4f1a\u6709\u53d8\u5316\u3002<\/p>\n<h2>Sentinels\/Slaves\u7684\u81ea\u52a8\u68c0\u6d4b<\/h2>\n<p>\u4e0d\u9700\u8981\u5728Sentinel\u7684\u914d\u7f6e\u4e2d\u5305\u542bSlave\u5217\u8868\u7684\u539f\u56e0\u662f\u56e0\u4e3aSentinel\u901a\u8fc7Pub\/Sub\u8fdb\u884c\u4fe1\u606f\u5171\u4eab\u3002\u5373\u4f7f\u5728\u9014\u4e2d\u5728\u7ebf\u6dfb\u52a0\u4e86\u53e6\u4e00\u4e2aSentinel\u6216Slave\uff0c\u8be5\u4fe1\u606f\u4e5f\u4f1a\u4f20\u9012\u7ed9\u5176\u4ed6Sentinel\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">## Sentinel\u306f \"__sentinel__:hello\" \u30c1\u30e3\u30f3\u30cd\u30eb\u3092\u5229\u7528\u3057\u3066\u3044\u308b\r\n<\/span><span class=\"n\">redis<\/span> <span class=\"n\">db0<\/span><span class=\"p\">:<\/span><span class=\"mi\">6379<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">subscribe<\/span> <span class=\"n\">__sentinel__<\/span><span class=\"p\">:<\/span><span class=\"n\">hello<\/span>\r\n<span class=\"n\">Reading<\/span> <span class=\"n\">messages<\/span><span class=\"p\">...<\/span> <span class=\"p\">(<\/span><span class=\"n\">press<\/span> <span class=\"n\">Ctrl<\/span><span class=\"o\">-<\/span><span class=\"n\">C<\/span> <span class=\"n\">to<\/span> <span class=\"n\">quit<\/span><span class=\"p\">)<\/span>\r\n<span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"subscribe\"<\/span>\r\n<span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"__sentinel__:hello\"<\/span>\r\n<span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"n\">integer<\/span><span class=\"p\">)<\/span> <span class=\"mi\">1<\/span>\r\n<span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"message\"<\/span>\r\n<span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"__sentinel__:hello\"<\/span>\r\n<span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"127.0.0.1:26380:77887a367e1c76ee9dc15f67a2fb3dc49bb00bf4:1\"<\/span>\r\n<span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"message\"<\/span>\r\n<span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"__sentinel__:hello\"<\/span>\r\n<span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"127.0.0.1:26379:3a92da7269b69fa1dcce5915068c4af6e8caf161:1\"<\/span>\r\n<span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"message\"<\/span>\r\n<span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"__sentinel__:hello\"<\/span>\r\n<span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"127.0.0.1:26380:77887a367e1c76ee9dc15f67a2fb3dc49bb00bf4:1\"<\/span>\r\n<span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"message\"<\/span>\r\n<span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"__sentinel__:hello\"<\/span>\r\n<span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"s\">\"127.0.0.1:26379:3a92da7269b69fa1dcce5915068c4af6e8caf161:1\"<\/span>\r\n<\/code><\/pre>\n<p>\u6d88\u606f\u7684\u5185\u5bb9\u662f host:port:run_id:can-failover\uff0c\u6bcf5\u79d2\u53d1\u5e03\u5230 __sentinel__:hello \u9891\u9053\uff0c\u6240\u6709\u7684 Sentinel \u90fd\u8ba2\u9605\u6b64\u9891\u9053\u4ee5\u8fdb\u884c\u4fe1\u606f\u5171\u4eab\u3002<\/p>\n<h2>\u590d\u5236\u7684\u6ce8\u610f\u4e8b\u9879<\/h2>\n<p>Redis\u7684\u590d\u5236\u4e0eMySQL\u7b49\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684\u590d\u5236\u6709\u5f88\u591a\u4e0d\u540c\u4e4b\u5904\u3002\u5728Redis\u5f00\u59cb\u590d\u5236\u65f6\uff0c\u5b83\u4f1a\u5c06\u6240\u6709\u6570\u636e\u5199\u5165\u78c1\u76d8\uff0c\u7136\u540e\u518d\u4f20\u8f93\u5230\u4ece\u670d\u52a1\u5668\uff0c\u56e0\u6b64\u9700\u8981\u6ce8\u610fI\/O\u548c\u7f51\u7edc\u5e26\u5bbd\u3002\u4e0d\u8fc7\uff0c\u636e\u8bf4Redis v2.8\u5df2\u7ecf\u5b9e\u73b0\u4e86PSYNC\uff08\u90e8\u5206\u91cd\u65b0\u540c\u6b65\uff09\uff0c\u56e0\u6b64\u8fd9\u4e2a\u95ee\u9898\u4f3c\u4e4e\u5df2\u7ecf\u5f97\u5230\u89e3\u51b3\u3002<\/p>\n<p>\u6211\u5e0c\u671b\u80fd\u591f\u7ee7\u7eed\u8fdb\u884cSentinel\u7684\u9a8c\u8bc1\u5de5\u4f5c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662f\u4ece\u6211\u81ea\u5df1\u7684\u535a\u5ba2\u6587\u7ae0\u4e2d\u62bd\u53d6\u51fa\u6765\u7684\u4e0eRedis Sentinel\u76f8\u5173\u7684\u5185\u5bb9\u3002\u5982\u679c\u6709\u8ffd\u52a0\u5185\u5bb9\uff0c\u6211\u4f1a\u5728\u535a\u5ba2\u4e0a [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-34329","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO 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