{"id":31692,"date":"2025-04-22T04:01:00","date_gmt":"2025-04-21T20:01:00","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/31692.html"},"modified":"2025-04-22T04:01:00","modified_gmt":"2025-04-21T20:01:00","slug":"redis%e8%ae%be%e8%ae%a1%e4%b8%8e%e5%ae%9e%e7%8e%b0%e7%ac%ac16%e7%ab%a0-sentinel-%e6%80%bb%e7%bb%931%ef%bc%88%e5%88%9d%e5%a7%8b%e5%8c%96%e3%80%81%e4%b8%bb%e4%bb%8e%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/31692.html","title":{"rendered":"Redis\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\u7b2c16\u7ae0 -- Sentinel \u603b\u7ed31\uff08\u521d\u59cb\u5316\u3001\u4e3b\u4ece\u670d\u52a1\u5668\u83b7\u53d6\u4fe1\u606f\u3001\u53d1\u9001\u4fe1\u606f\u3001\u63a5\u6536\u4fe1\u606f\uff09"},"content":{"rendered":"<p>Sentinel\u662fRedis\u7684\u9ad8\u53ef\u7528\u89e3\u51b3\u65b9\u6848&#xff1a;\u7531\u4e00\u4e2a\u6216\u591a\u4e2aSentinel\u5b9e\u4f8b\u7ec4\u6210\u7684Sentinel\u7cfb\u7edf\u53ef\u4ee5\u76d1\u89c6\u4efb\u610f\u591a\u4e2a\u4e3b\u670d\u52a1\u5668&#xff0c;\u4ee5\u53ca\u8fd9\u4e9b\u4e3b\u670d\u52a1\u5668\u5c5e\u4e0b\u7684\u6240\u6709\u4ece\u670d\u52a1\u5668&#xff0c;\u88ab\u76d1\u89c6\u7684\u4e3b\u670d\u52a1\u5668\u8fdb\u5165\u4e0b\u7ebf\u72b6\u6001\u65f6&#xff0c;\u81ea\u52a8\u5c06\u4e0b\u7ebf\u4e3b\u670d\u52a1\u5668\u5c5e\u4e0b\u7684\u67d0\u4e2a\u4ece\u670d\u52a1\u5668\u5347\u7ea7\u4e3a\u65b0\u7684\u4e3b\u670d\u52a1\u5668&#xff0c;\u7136\u540e\u7531\u65b0\u7684\u4e3b\u670d\u52a1\u5668\u66ff\u4ee3\u5df2\u4e0b\u7ebf\u7684\u4e3b\u670d\u52a1\u5668\u7ee7\u7eed\u5904\u7406\u547d\u4ee4\u8bf7\u6c42\u3002<\/p>\n<h3>16.1 \u542f\u52a8\u5e76\u521d\u59cb\u5316Sentinel<\/h3>\n<p>\u5f53\u4e00\u4e2aSentinel\u542f\u52a8\u7684\u65f6\u5019&#xff0c;\u9700\u8981\u6267\u884c5\u4e2a\u6b65\u9aa4<\/p>\n<h4>16.1.1 \u521d\u59cb\u5316\u670d\u52a1\u5668<\/h4>\n<p>Sentinel\u672c\u8d28\u4e0a\u53ea\u662f\u4e00\u4e2a\u8fd0\u884c\u5728\u7279\u6b8a\u6a21\u5f0f\u4e0b\u7684Redis\u670d\u52a1\u5668&#xff0c;\u6240\u4ee5\u542f\u52a8Sentinel\u7684\u7b2c\u4e00\u6b65&#xff0c;\u5c31\u662f\u521d\u59cb\u5316\u4e00\u4e2a\u666e\u901a\u7684Redis\u670d\u52a1\u5668\u3002<\/p>\n<p>\u533a\u522b\u5728\u4e8e\u90e8\u5206\u529f\u80fdSentinel\u5e76\u4e0d\u4f1a\u4f7f\u7528&#xff0c;\u6bd4\u5982\u4e0d\u4f1a\u8f7d\u5165RDB\u548cAOF\u6587\u4ef6&#xff0c;\u4e0d\u4f1a\u4f7f\u7528\u6570\u636e\u5e93\u548c\u952e\u503c\u5bf9\u65b9\u9762\u7684\u547d\u4ee4\u3001\u4e0d\u4f1a\u4f7f\u7528\u4e8b\u52a1\/\u811a\u672c\u547d\u4ee4&#xff1b;\u590d\u5236\u547d\u4ee4\u5728Sentinel\u5185\u90e8\u53ef\u4ee5\u4f7f\u7528&#xff0c;\u53d1\u5e03\u548c\u8ba2\u9605\u91ccPublish\u547d\u4ee4\u53ea\u80fd\u5728Sentinel\u5185\u90e8\u4f7f\u7528&#xff1b;\u6587\u4ef6\u4e8b\u4ef6\u5904\u7406\u5668\u548c\u65f6\u95f4\u4e8b\u4ef6\u5904\u7406\u5668\u4e5f\u540c\u7406\u3002<\/p>\n<h4>16.1.2 \u4f7f\u7528Sentinel\u4e13\u7528\u4ee3\u7801<\/h4>\n<p>\u5c06\u4e00\u90e8\u5206\u666e\u901aRedis\u670d\u52a1\u5668\u4f7f\u7528\u7684\u4ee3\u7801\u66ff\u6362\u6210Sentinel\u4e13\u7528\u4ee3\u7801&#xff0c;\u6bd4\u5982&#xff0c;\u666e\u901aRedis\u670d\u52a1\u5668\u4f7f\u7528redis.h\/REDIS_SERVERPORT\u5e38\u91cf\u7684\u503c\u4f5c\u4e3a\u670d\u52a1\u5668\u7aef\u53e3&#xff0c;\u800cSentinel\u5219\u4f7f\u7528REDIS_SENTINEL_PORT\u5e38\u91cf\u4f5c\u4e3a\u670d\u52a1\u5668\u7aef\u53e3\u3002\u524d\u8005\u7684\u9ed8\u8ba4\u503c\u662f6379&#xff0c;\u540e\u8005\u7684\u9ed8\u8ba4\u503c\u662f26379<\/p>\n<p>\u5176\u6b21&#xff0c;\u666e\u901aRedis\u670d\u52a1\u5668\u4f7f\u7528redis.c\/redisCommandTable\u4f5c\u4e3a\u547d\u4ee4\u8868&#xff0c;Sentinel\u4f7f\u7528sentinel.c\/sentinelcmds\u4f5c\u4e3a\u547d\u4ee4\u8868\u3002<\/p>\n<h4>16.1.3 \u521d\u59cb\u5316Sentinel\u72b6\u6001<\/h4>\n<p>\u670d\u52a1\u5668\u4f1a\u521d\u59cb\u5316\u4e00\u4e2asentinel.c\/sentinelState\u7ed3\u6784&#xff0c;\u8fd9\u4e2a\u7ed3\u6784\u4fdd\u5b58\u4e86\u670d\u52a1\u5668\u91cc\u6240\u6709\u548cSentinel\u529f\u80fd\u6709\u5173\u7684\u72b6\u6001<\/p>\n<p><span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sentinelState<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">uint64_t<\/span> current_epoch<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u5f53\u524d\u7eaa\u5143 \u7528\u4e8e\u5b9e\u73b0\u6545\u969c\u8f6c\u79fb;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u4fdd\u5b58\u4e86\u6240\u6709\u88ab\u8fd9\u4e2asentinel\u76d1\u89c6\u7684\u4e3b\u670d\u52a1\u5668<\/span><br \/>\n    <span class=\"token comment\">\/\/\u5b57\u5178\u7684\u952e\u662f\u4e3b\u670d\u52a1\u5668\u7684\u540d\u5b57<\/span><br \/>\n    <span class=\"token comment\">\/\/\u5b57\u5178\u7684\u503c\u5219\u662f\u4e00\u4e2a\u6307\u5411sentinelRedisInstance\u7ed3\u6784\u7684\u6307\u9488<\/span><br \/>\n    dict <span class=\"token operator\">*<\/span>masters<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u662f\u5426\u8fdb\u5165\u4e86TILT\u6a21\u5f0f?<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> tilt<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u76ee\u524d\u6b63\u5728\u6267\u884c\u7684\u811a\u672c\u7684\u6570\u91cf<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> running_scripts<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u8fdb\u5165TILT\u6a21\u5f0f\u7684\u65f6\u95f4<\/span><br \/>\n    mstime_t tilt_start_time<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u6700\u540e\u4e00\u6b21\u6267\u884c\u65f6\u95f4\u5904\u7406\u5668\u7684\u65f6\u95f4<\/span><br \/>\n    mstime_t previous_time<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u4e00\u4e2aEIEO\u961f\u5217&#xff0c;\u5305\u542b\u4e86\u6240\u6709\u9700\u8981\u6267\u884c\u7684\u7528\u6237\u811a\u672c<\/span><br \/>\n    list <span class=\"token operator\">*<\/span>scripts_queue<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>sentinel<span class=\"token punctuation\">;<\/span><\/p>\n<h4>16.1.4 \u521d\u59cb\u5316Sentinel\u72b6\u6001\u7684masters\u5c5e\u6027<\/h4>\n<p>masters\u5b57\u6bb5\u8bb0\u5f55\u4e86\u6240\u6709\u88abSentinel\u76d1\u89c6\u7684\u4e3b\u670d\u52a1\u5668\u7684\u76f8\u5173\u4fe1\u606f&#xff0c;\u5b57\u5178\u7684key\u662f\u88ab\u76d1\u89c6\u4e3b\u670d\u52a1\u5668\u7684\u540d\u5b57&#xff1b;value\u662f\u5bf9\u5e94\u7684sentinelRedisInstance\u7ed3\u6784\u3002<\/p>\n<p>\u6bcf\u4e2asentinelRedisInstance\u7ed3\u6784&#xff08;\u5b9e\u4f8b\u7ed3\u6784&#xff09;\u4ee3\u8868\u4e00\u4e2a\u88abSentinel\u76d1\u89c6\u7684Redis\u670d\u52a1\u5668\u5b9e\u4f8b&#xff0c;\u53ef\u4ee5\u662f\u4e3b\u670d\u52a1\u5668\u3001\u4ece\u670d\u52a1\u5668\u6216\u53e6\u4e00\u4e2aSentinel<\/p>\n<p><span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">sentinelRedisInstance<\/span><br \/>\n<span class=\"token comment\">\/\/\u6807\u8bc6\u503c&#xff0c;\u8bb0\u5f55\u4e86\u5b9e\u4f8b\u7684\u7c7b\u578b&#xff0c;\u4ee5\u53ca\u8be5\u5b9e\u4f8b\u7684\u5f53\u524d\u72b6\u6001<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> flags<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u5b9e\u4f8b\u7684\u540d\u5b57<\/span><br \/>\n<span class=\"token comment\">\/\/\u4e3b\u670d\u52a1\u5668\u7684\u540d\u5b57\u7531\u7528\u6237\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u8bbe\u7f6e<\/span><br \/>\n<span class=\"token comment\">\/\/\u4ece\u670d\u52a1\u5668\u4ee5\u53caSentinel\u7684\u540d\u5b57\u7531Sentinel\u81ea\u52a8\u8bbe\u7f6e\/\/\u683c\u5f0f\u4e3aip:port&#xff0c;\u4f8b\u5982&#034;127.0.0.1:26379&#034;<\/span><br \/>\n    <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>name<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5b9e\u4f8b\u7684\u8fd0\u884c ID<\/span><br \/>\n    <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>runid<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u914d\u7f6e\u7eaa\u5143&#xff0c;\u7528\u4e8e\u5b9e\u73b0\u6545\u969c\u8f6c\u79fb<\/span><br \/>\n    <span class=\"token keyword\">uint64_t<\/span> config_epoch<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u5b9e\u4f8b\u7684\u5730\u5740<\/span><br \/>\n    sentinelAddr <span class=\"token operator\">*<\/span>addr<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/SENTINEL down-after-milliseconds\u9009\u9879\u8bbe\u5b9a\u7684\u503c<\/span><br \/>\n<span class=\"token comment\">\/\/\u5b9e\u4f8b\u65e0\u54cd\u5e94\u591a\u5c11\u6beb\u79d2\u4e4b\u540e\u624d\u4f1a\u88ab\u5224\u65ad\u4e3a\u4e3b\u89c2\u4e0b\u7ebf(subjectively down)<\/span><br \/>\n    mstime_t down_after_period<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/SENTINEL monitor&lt;master-name&gt;&lt;IP&gt;&lt;port&gt;&lt;quorum&gt;\u9009\u9879\u4e2d\u7684quorum\u53c2\u6570<\/span><br \/>\n<span class=\"token comment\">\/\/\u5224\u65ad\u8fd9\u4e2a\u5b9e\u4f8b\u4e3a\u5ba2\u89c2\u4e0b\u7ebf(objectively down)\u6240\u9700\u7684\u652f\u6301\u6295\u7968\u6570\u91cf<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> quorum<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/SENTINEL parallel-syncs&lt;master-name&gt;&lt;number&gt;\u9009\u9879\u7684\u503c<\/span><br \/>\n<span class=\"token comment\">\/\/\u5728\u6267\u884c\u6545\u969c\u8f6c\u79fb\u64cd\u4f5c\u65f6&#xff0c;\u53ef\u4ee5\u540c\u65f6\u5bf9\u65b0\u7684\u4e3b\u670d\u52a1\u5668\u8fdb\u884c\u540c\u6b65\u7684\u4ece\u670d\u52a1\u5668\u6570\u91cf<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> parallel_syncs<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/SENTINEL failover-timeout &lt;master-name&gt;&lt;ms&gt;\u9009\u9879\u7684\u503c<\/span><br \/>\n<span class=\"token comment\">\/\/\u5237\u65b0\u6545\u969c\u8fc1\u79fb\u72b6\u6001\u7684\u6700\u5927\u65f6\u9650<\/span><br \/>\n    mstime_t failover_timeout<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span>sentinelRedisInstance<span class=\"token punctuation\">;<\/span><\/p>\n<p>addr\u5c5e\u6027\u662f\u4e00\u4e2a\u6307\u5411sentinelAddr\u7ed3\u6784\u7684\u6307\u9488&#xff0c;\u4fdd\u5b58\u7740\u5b9e\u4f8b\u7684IP\u5730\u5740\u548c\u7aef\u53e3\u53f7\u3002<\/p>\n<p>masters\u5b57\u5178\u7684\u521d\u59cb\u5316\u662f\u6839\u636e\u88ab\u8f7d\u5165\u7684Sentinel\u914d\u7f6e\u6587\u4ef6\u6765\u8fdb\u884c\u7684<\/p>\n<h4>16.1.5 \u521b\u5efa\u8fde\u5411\u4e3b\u670d\u52a1\u5668\u7684\u7f51\u7edc\u8fde\u63a5<\/h4>\n<p>Sentinel\u5c06\u79f0\u4e3a\u4e3b\u670d\u52a1\u5668\u7684\u5ba2\u6237\u7aef&#xff0c;\u53ef\u4ee5\u5411\u4e3b\u670d\u52a1\u5668\u53d1\u9001\u547d\u4ee4&#xff0c;\u4f1a\u521b\u5efa2\u4e2a\u5f02\u6b65\u7f51\u7edc\u8fde\u63a5&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u547d\u4ee4\u8fde\u63a5&#xff1a;\u4e13\u95e8\u5411\u4e3b\u670d\u52a1\u5668\u53d1\u9001\u547d\u4ee4&#xff0c;\u5e76\u63a5\u6536\u547d\u4ee4\u56de\u590d<\/p>\n<\/li>\n<li>\n<p>\u8ba2\u9605\u8fde\u63a5&#xff1a;\u8ba2\u9605\u4e3b\u670d\u52a1\u5668\u7684_sentinel_:hello\u9891\u9053<\/p>\n<\/li>\n<\/ul>\n<p>\u4e3a\u4e86\u4e0d\u4e22\u5931\u9891\u9053\u7684\u4efb\u4f55\u4fe1\u606f&#xff0c;\u5fc5\u987b\u8981\u6709\u8ba2\u9605\u8fde\u63a5<\/p>\n<h3>16.2 \u83b7\u53d6\u4e3b\u670d\u52a1\u5668\u4fe1\u606f<\/h3>\n<p>Sentinel\u9ed8\u8ba4\u4f1a\u4ee5\u6bcf\u5341\u79d2\u4e00\u6b21\u7684\u9891\u7387&#xff0c;\u901a\u8fc7\u547d\u4ee4\u8fde\u63a5\u5411\u88ab\u76d1\u89c6\u7684\u4e3b\u670d\u52a1\u5668\u53d1\u9001INFO\u547d\u4ee4&#xff0c;\u5e76\u901a\u8fc7\u5206\u6790INFO\u547d\u4ee4\u7684\u56de\u590d\u6765\u83b7\u53d6\u4e3b\u670d\u52a1\u5668\u7684\u5f53\u524d\u4fe1\u606f\u3002<\/p>\n<p>\u6839\u636erun_id\u57df\u548crole\u57df\u8bb0\u5f55\u7684\u4fe1\u606f&#xff0c;Sentinel\u5c06\u5bf9\u4e3b\u670d\u52a1\u5668\u7684\u5b9e\u4f8b\u7ed3\u6784\u8fdb\u884c\u66f4\u65b0&#xff1b;\u4e3b\u670d\u52a1\u5668\u8fd4\u56de\u7684\u4ece\u670d\u52a1\u5668\u4fe1\u606f&#xff0c;\u5c06\u4f1a\u88ab\u7528\u4e8e\u66f4\u65b0\u4e3b\u670d\u52a1\u5668\u5b9e\u4f8b\u7ed3\u6784\u7684salves\u5b57\u5178&#xff0c;\u8fd9\u4e2a\u5b57\u5178\u8bb0\u5f55\u4e86\u4e3b\u670d\u52a1\u5668\u5c5e\u4e0b\u4ece\u670d\u52a1\u5668\u7684\u540d\u5355\u3002\u5b57\u5178\u7684key\u662f\u7531Sentinel\u81ea\u52a8\u8bbe\u7f6e\u7684\u4ece\u670d\u52a1\u5668\u540d\u5b57&#xff0c;\u683c\u5f0f\u4e3aip:port&#xff1b;\u5b57\u5178\u7684value\u662f\u4ece\u670d\u52a1\u5668\u5bf9\u5e94\u7684\u5b9e\u4f8b\u7ed3\u6784\u3002<\/p>\n<p>\u4e3b\u670d\u52a1\u5668\u5b9e\u4f8b\u7ed3\u6784\u7684flags\u5c5e\u6027\u7684\u503c\u662fSRI_MASTER&#xff0c;\u800c\u4ece\u670d\u52a1\u5668\u5b9e\u4f8b\u7ed3\u6784\u7684flags\u5c5e\u6027\u7684\u503c\u662fSRI_SLAVE\u3002\u4e3b\u670d\u52a1\u5668\u5b9e\u4f8b\u7ed3\u6784\u7684name\u7684\u503c\u662f\u7528\u6237\u4f7f\u7528Sentinel\u914d\u7f6e\u6587\u4ef6\u8bbe\u7f6e\u7684&#xff0c;\u800c\u4ece\u670d\u52a1\u5668\u5b9e\u4f8b\u7ed3\u6784\u7684name\u5c5e\u6027\u7684\u503c\u5219\u662fSentinel\u6839\u636e\u4ece\u670d\u52a1\u5668\u7684IP\u5730\u5740\u548c\u7aef\u53e3\u53f7\u81ea\u52a8\u8bbe\u7f6e\u7684\u3002<\/p>\n<h3>16.3 \u83b7\u53d6\u4ece\u670d\u52a1\u5668\u4fe1\u606f<\/h3>\n<p>\u5f53Sentinel\u53d1\u73b0\u4e3b\u670d\u52a1\u5668\u6709\u65b0\u7684\u4ece\u670d\u52a1\u5668\u51fa\u73b0\u65f6&#xff0c;\u4f1a\u4e3a\u8fd9\u4e2a\u65b0\u7684\u4ece\u670d\u52a1\u5668\u521b\u5efa\u76f8\u5e94\u7684\u5b9e\u4f8b\u7ed3\u6784&#xff0c;\u8fd8\u4f1a\u521b\u5efa\u8fde\u63a5\u5230\u4ece\u670d\u52a1\u5668\u7684\u547d\u4ee4\u8fde\u63a5\u548c\u8ba2\u9605\u94fe\u63a5\u3002<\/p>\n<p>\u521b\u5efa\u547d\u4ee4\u8fde\u63a5\u540e&#xff0c;\u9ed8\u8ba410\u79d2\u4e00\u6b21\u901a\u8fc7\u547d\u4ee4\u8fde\u63a5\u5411\u4ece\u670d\u52a1\u5668\u53d1\u9001INFO\u547d\u4ee4&#xff0c;\u5f97\u5230\u4e0b\u9762\u4fe1\u606f&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u4ece\u670d\u52a1\u5668\u7684\u8fd0\u884c ID run_id<\/p>\n<\/li>\n<li>\n<p>\u4ece\u670d\u52a1\u5668\u7684\u89d2\u8272 role<\/p>\n<\/li>\n<li>\n<p>\u4e3b\u670d\u52a1\u5668\u7684IP\u5730\u5740 master_host&#xff0c;\u4ee5\u53ca\u4e3b\u670d\u52a1\u5668\u7684\u7aef\u53e3\u53f7master_port<\/p>\n<\/li>\n<li>\n<p>\u4e3b\u4ece\u670d\u52a1\u5668\u7684\u8fde\u63a5\u72b6\u6001master_link_status<\/p>\n<\/li>\n<li>\n<p>\u4ece\u670d\u52a1\u5668\u7684\u4f18\u5148\u7ea7slave_priority<\/p>\n<\/li>\n<li>\n<p>\u4ece\u670d\u52a1\u5668\u7684\u590d\u5236\u504f\u79fb\u91cfslave_repl_offset<\/p>\n<\/li>\n<\/ul>\n<h3>16.4 \u5411\u4e3b\u670d\u52a1\u5668\u548c\u4ece\u670d\u52a1\u5668\u53d1\u9001\u4fe1\u606f<\/h3>\n<p>\u4f1a\u4ee5\u9ed8\u8ba42\u79d2\u4e00\u6b21\u7684\u9891\u7387&#xff0c;\u901a\u8fc7\u547d\u4ee4\u8fde\u63a5\u5411\u6240\u6709\u88ab\u76d1\u89c6\u7684\u4e3b\u670d\u52a1\u5668\u548c\u4ece\u670d\u52a1\u5668\u53d1\u9001\u547d\u4ee4<\/p>\n<p>PUBLISH _sentinel_:hello <span class=\"token string\">&#034;&lt;s_ip&gt;,&lt;s_port&gt;,&lt;s_runid&gt;,<br \/>\n&lt;s_epoch&gt;,&lt;m_name&gt;,&lt;m_ip&gt;,&lt;m_port&gt;,&lt;m_epoch&gt;&#034;<\/span><\/p>\n<p>\u5411\u670d\u52a1\u5668\u7684_sentinel_:hello\u9891\u9053\u53d1\u9001\u4e86\u4e00\u6761\u4fe1\u606f&#xff0c;\u7531\u591a\u4e2a\u53c2\u6570\u7ec4\u6210&#xff0c;\u5176\u4e2ds_\u5f00\u5934\u7684\u662fSentinel\u672c\u8eab\u7684\u4fe1\u606f&#xff0c;\u4ee5m_\u5f00\u5934\u7684\u662f\u4e3b\u670d\u52a1\u5668\u7684\u4fe1\u606f&#xff0c;\u5982\u679c\u6b63\u5728\u76d1\u89c6\u7684\u662f\u4e3b\u670d\u52a1\u5668&#xff0c;\u8fd9\u4e9b\u53c2\u6570\u5c31\u662f\u8be5\u4e3b\u670d\u52a1\u5668\u7684\u4fe1\u606f&#xff1b;\u5982\u679c\u76d1\u89c6\u7684\u662f\u4ece\u670d\u52a1\u5668&#xff0c;\u8fd9\u4e9b\u53c2\u6570\u5c31\u662f\u4ece\u670d\u52a1\u5668\u6b63\u5728\u590d\u5236\u7684\u4e3b\u670d\u52a1\u5668\u7684\u4fe1\u606f\u3002<\/p>\n<p>s_epoch\u8868\u793aSentinel\u5f53\u524d\u7684\u914d\u7f6e\u7eaa\u5143&#xff0c;m_epoch\u8868\u793a\u4e3b\u670d\u52a1\u5668\u5f53\u524d\u7684\u914d\u7f6e\u7eaa\u5143\u3002<\/p>\n<h3>16.5 \u63a5\u6536\u6765\u81ea\u4e3b\u670d\u52a1\u5668\u548c\u4ece\u670d\u52a1\u5668\u7684\u9891\u9053\u4fe1\u606f<\/h3>\n<p>\u5f53Sentinel\u4e0e\u4e00\u4e2a\u4e3b\u670d\u52a1\u5668\u6216\u4ece\u670d\u52a1\u5668\u5efa\u7acb\u8d77\u8ba2\u9605\u8fde\u63a5\u4e4b\u540e&#xff0c;Sentinel\u5c31\u4f1a\u901a\u8fc7\u8ba2\u9605\u8fde\u63a5&#xff0c;\u5411\u670d\u52a1\u5668\u53d1\u9001\u4ee5\u4e0b\u547d\u4ee4&#xff0c;<\/p>\n<p>SUBSCRIBE _sentinel_:hello<\/p>\n<p>\u6bcf\u4e2a\u4e0eSentinel\u8fde\u63a5\u7684\u670d\u52a1\u5668&#xff0c;Sentinel\u65e2\u901a\u8fc7\u547d\u4ee4\u8fde\u63a5\u5411\u670d\u52a1\u5668\u7684_sentinel_:hello \u9891\u9053\u53d1\u9001\u4fe1\u606f&#xff0c;\u53c8\u901a\u8fc7\u8ba2\u9605\u8fde\u63a5\u4ece\u670d\u52a1\u5668\u7684_sentinel_:hello \u9891\u9053\u63a5\u6536\u4fe1\u606f\u3002<\/p>\n<p>\u5bf9\u4e8e\u76d1\u89c6\u540c\u4e00\u4e2a\u670d\u52a1\u5668\u7684\u591a\u4e2aSentinel\u6765\u8bf4&#xff0c;\u4e00\u4e2aSentinel\u53d1\u9001\u7684\u4fe1\u606f\u4f1a\u88ab\u5176\u4ed6Sentinel\u63a5\u6536\u5230&#xff0c;\u8fd9\u4e9b\u4fe1\u606f\u4f1a\u88ab\u7528\u4e8e\u66f4\u65b0\u5176\u4ed6 Sentinel\u5bf9\u53d1\u9001\u4fe1\u606f Sentinel \u7684\u8ba4\u77e5\u4e5f\u4f1a\u88ab\u7528\u4e8e\u66f4\u65b0\u5176\u4ed6Sentinel\u5bf9\u88ab\u76d1\u89c6\u670d\u52a1\u5668\u7684\u8ba4\u77e5\u3002<\/p>\n<p>\u5f53\u4e00\u4e2aSentinel\u4ece\u8be5\u9891\u9053\u6536\u5230\u4e00\u6761\u4fe1\u606f\u65f6&#xff0c;Sentinel\u4f1a\u5bf9\u8fd9\u6761\u4fe1\u606f\u8fdb\u884c\u5206\u6790&#xff0c;\u63d0\u53d6\u51fa\u4fe1\u606f\u4e2d\u7684Sentinel IP\u5730\u5740&#xff0c;Sentinel\u7aef\u53e3\u53f7\u3001Sentinel\u8fd0\u884cID\u7b498\u4e2a\u53c2\u6570&#xff0c;\u5e76\u8fdb\u884c\u68c0\u67e5&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5982\u679c\u4fe1\u606f\u4e2d\u8bb0\u5f55\u7684Sentinel\u8fd0\u884cID\u548c\u63a5\u6536\u4fe1\u606f\u7684Sentinel\u7684\u8fd0\u884cID\u76f8\u540c&#xff0c;\u8fd9\u6761\u4fe1\u606f\u5c31\u662f\u672c\u8eab\u53d1\u9001\u7684&#xff0c;\u4e22\u5f03<\/p>\n<\/li>\n<li>\n<p>\u5426\u5219&#xff0c;\u6839\u636e\u6536\u5230\u7684\u4fe1\u606f&#xff0c;\u5bf9\u76f8\u5e94\u4e3b\u670d\u52a1\u5668\u7684\u5b9e\u4f8b\u7ed3\u6784\u8fdb\u884c\u66f4\u65b0<\/p>\n<\/li>\n<\/ul>\n<h4>16.5.1 \u66f4\u65b0sentinels\u5b57\u5178<\/h4>\n<p>Sentinel\u4e3a\u4e3b\u670d\u52a1\u5668\u521b\u5efa\u7684\u5b9e\u4f8b\u7ed3\u6784\u4e2d\u7684sentinels\u5b57\u5178\u4fdd\u5b58\u7684\u662f\u9664\u4e86\u8be5Sentinel\u672c\u8eab&#xff0c;\u6240\u6709\u540c\u6837\u76d1\u89c6\u8fd9\u4e2a\u4e3b\u670d\u52a1\u5668\u7684\u5176\u4ed6Sentinel\u7684\u8d44\u6599&#xff1a;\u5b57\u5178\u7684key\u662f\u5176\u4e2d\u4e00\u4e2aSentinel\u7684\u540d\u5b57&#xff0c;\u683c\u5f0f\u662fip:port&#xff1b;\u5b57\u5178\u7684value\u662f\u952e\u5bf9\u5e94Sentinel\u7684\u5b9e\u4f8b\u7ed3\u6784\u3002<\/p>\n<p>\u5f53\u76ee\u6807Sentinel\u6536\u5230\u6e90Sentinel\u53d1\u6765\u7684\u4fe1\u606f\u65f6&#xff0c;\u4f1a\u4ece\u4fe1\u606f\u4e2d\u5206\u6790\u5e76\u63d0\u53d6\u51fa\u6e90Sentinel\u7684\u76f8\u5173\u53c2\u6570\u548c\u6e90Sentinel\u6b63\u5728\u76d1\u89c6\u7684\u4e3b\u670d\u52a1\u5668\u7684\u53c2\u6570&#xff0c;\u5e76\u4e14\u5728\u81ea\u5df1\u7684Sentinel\u72b6\u6001\u7684masters\u5b57\u5178\u91cc\u67e5\u627e\u5bf9\u5e94\u7684\u4e3b\u670d\u52a1\u5668\u5b9e\u4f8b\u7ed3\u6784&#xff0c;\u68c0\u67e5\u4e3b\u670d\u52a1\u5668\u5b9e\u4f8b\u7ed3\u6784\u7684sentinels\u5b57\u5178\u91cc&#xff0c;\u6e90Sentinel\u7684\u5b9e\u4f8b\u662f\u5426\u5b58\u5728\u3002<\/p>\n<ul>\n<li>\n<p>\u5982\u679c\u6e90Sentinel\u7684\u5b9e\u4f8b\u7ed3\u6784\u5b58\u5728&#xff0c;\u5bf9\u6e90Sentinel\u7684\u5b9e\u4f8b\u7ed3\u6784\u8fdb\u884c\u66f4\u65b0<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u4e0d\u5b58\u5728&#xff0c;\u8bf4\u660e\u6e90Sentinel\u662f\u521a\u521a\u5f00\u59cb\u76d1\u89c6\u4e3b\u670d\u52a1\u5668\u7684&#xff0c;\u76ee\u6807Sentinel\u4f1a\u4e3a\u6e90Sentinel\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f8b\u7ed3\u6784&#xff0c;\u5e76\u4e14\u6dfb\u52a0\u5230sentinels\u5b57\u5178\u91cc\u3002<\/p>\n<\/li>\n<\/ul>\n<p>masters\u5b57\u6bb5\u8bb0\u5f55\u4e86\u6240\u6709\u88abSentinel\u76d1\u89c6\u7684\u4e3b\u670d\u52a1\u5668\u7684\u76f8\u5173\u4fe1\u606f&#xff0c;\u4e3b\u670d\u52a1\u5668\u7684\u4fe1\u606f\u5305\u542b\u4e86\u5176\u4ed6\u6b63\u5728\u76d1\u89c6\u8be5\u4e3b\u670d\u52a1\u5668\u7684Sentinel\u4fe1\u606f\u3002\u4e5f\u5c31\u662f\u8bf4\u76d1\u89c6\u540c\u4e00\u4e2a\u4e3b\u670d\u52a1\u5668\u7684\u591a\u4e2aSentinel\u662f\u53ef\u4ee5\u4e92\u76f8\u81ea\u52a8\u53d1\u73b0\u7684\u3002<\/p>\n<h4>16.5.2 \u521b\u5efa\u8fde\u5411\u5176\u4ed6Sentinel\u7684\u547d\u4ee4\u8fde\u63a5<\/h4>\n<p>\u5f53Sentinel\u901a\u8fc7\u9891\u9053\u4fe1\u606f\u53d1\u73b0\u4e00\u4e2a\u65b0\u7684Sentinel\u65f6&#xff0c;\u5b83\u4e0d\u4ec5\u4f1a\u4e3a\u65b0Sentinel\u5728sentinels\u5b57\u5178\u4e2d\u521b\u5efa\u76f8\u5e94\u7684\u5b9e\u4f8b\u7ed3\u6784&#xff0c;\u8fd8\u4f1a\u521b\u5efa\u4e00\u4e2a\u8fde\u5411\u65b0Sentinel\u7684\u547d\u4ee4\u8fde\u63a5&#xff0c;\u800c\u65b0Sentinel\u4e5f\u540c\u6837\u4f1a\u521b\u5efa\u8fde\u5411\u8fd9\u4e2aSentinel\u7684\u547d\u4ee4\u8fde\u63a5&#xff0c;\u6700\u7ec8\u76d1\u89c6\u540c\u4e00\u4e3b\u670d\u52a1\u5668\u7684\u591a\u4e2aSentinel\u5c06\u5f62\u6210\u76f8\u4e92\u8fde\u63a5\u7684\u7f51\u7edc&#xff1a;Sentinel A\u6709\u8fde\u5411Sentinel B\u7684\u547d\u4ee4\u8fde\u63a5&#xff0c;\u800cSentinel B\u4e5f\u6709\u8fde\u5411Sentinel 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