{"id":33496,"date":"2024-01-05T05:18:41","date_gmt":"2023-01-16T11:16:42","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8-redis-sentinel-%e6%9e%b6%e6%9e%84%e5%89%8d%ef%bc%8c%e5%b0%86-haproxy-%e9%83%a8%e7%bd%b2%e5%b9%b6%e5%a7%8b%e7%bb%88%e8%bf%9e%e6%8e%a5%e5%88%b0%e4%b8%bb%e6%9c%8d%e5%8a%a1%e5%99%a8%ef%bc%8c\/"},"modified":"2024-05-04T16:55:23","modified_gmt":"2024-05-04T08:55:23","slug":"%e5%9c%a8-redis-sentinel-%e6%9e%b6%e6%9e%84%e5%89%8d%ef%bc%8c%e5%b0%86-haproxy-%e9%83%a8%e7%bd%b2%e5%b9%b6%e5%a7%8b%e7%bb%88%e8%bf%9e%e6%8e%a5%e5%88%b0%e4%b8%bb%e6%9c%8d%e5%8a%a1%e5%99%a8%ef%bc%8c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8-redis-sentinel-%e6%9e%b6%e6%9e%84%e5%89%8d%ef%bc%8c%e5%b0%86-haproxy-%e9%83%a8%e7%bd%b2%e5%b9%b6%e5%a7%8b%e7%bb%88%e8%bf%9e%e6%8e%a5%e5%88%b0%e4%b8%bb%e6%9c%8d%e5%8a%a1%e5%99%a8%ef%bc%8c\/","title":{"rendered":"\u5728 Redis Sentinel \u67b6\u6784\u524d\uff0c\u5c06 HAProxy \u90e8\u7f72\u5e76\u59cb\u7ec8\u8fde\u63a5\u5230\u4e3b\u670d\u52a1\u5668\uff0c\u4ee5\u786e\u4fdd\u59cb\u7ec8\u80fd\u591f\u8fde\u63a5\u5230\u4e3b\u670d\u52a1\u5668"},"content":{"rendered":"<p>Redis Sentinel\u662f\u4e00\u79cd\u9ad8\u53ef\u7528\u6027\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u68c0\u6d4b\u5230\u4e3b\u670d\u52a1\u5668\u7684\u6545\u969c\u5e76\u52a8\u6001\u5730\u5347\u7ea7\u4ece\u670d\u52a1\u5668\u4e3a\u4e3b\u670d\u52a1\u5668\u3002\u7136\u800c\uff0c\u4ece\u5e94\u7528\u7a0b\u5e8f\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u6709\u4e00\u4ef6\u4e8b\u8ba9\u4eba\u62c5\u5fc3\uff0c\u90a3\u5c31\u662f\u8981\u600e\u4e48\u77e5\u9053\u4e3b\u670d\u52a1\u5668\u7684IP\u5730\u5740\u3002Redis Sentinel\u5df2\u7ecf\u63d0\u4f9b\u4e86\u5173\u4e8e\u5ba2\u6237\u7aef\u6784\u5efa\u7684\u6587\u6863\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u901a\u8fc7\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e0eSentinel\u8fdb\u884c\u901a\u4fe1\u6765\u52a8\u6001\u83b7\u53d6\u4e3b\u670d\u52a1\u5668\u7684IP\u3002\u4f46\u5b9e\u9645\u4e0a\uff0c\u5f88\u591a\u60c5\u51b5\u4e0b\u4e0d\u5e0c\u671b\u66f4\u6539\u5e94\u7528\u7a0b\u5e8f\u7684\u89c4\u683c\u3002\u5728\u672c\u6587\u4e2d\uff0c\u5c06\u4ecb\u7ecd\u4f7f\u7528HAProxy\u7684\u65b9\u6cd5\uff0c\u4ee5\u907f\u514d\u66f4\u6539\u5e94\u7528\u7a0b\u5e8f\u7684\u89c4\u683c\uff0c\u5e76\u4fdd\u6301\u4e0e\u4e3b\u670d\u52a1\u5668\u7684\u6301\u7eed\u8fde\u63a5\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/3-0.jpeg\" alt=\"redis-haproxy-final.jpg.jpg\" \/><\/div>\n<div>\u5728\u672c\u6b21\u4ecb\u7ecd\u7684\u6848\u4f8b\u4e2d\uff0cHAProxy \u5c06\u6210\u4e3a SPOF\u3002\u901a\u8fc7\u5c06 HAProxy \u8fdb\u884c\u96c6\u7fa4\u5316\u5e76\u4f7f\u7528 IP \u5171\u4eab\u529f\u80fd\uff0c\u53ef\u4ee5\u6d88\u9664 SPOF\u3002\u5173\u4e8e IP \u5171\u4eab\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u8003\u4ee5\u4e0b\u6587\u7ae0\u3002<\/div>\n<p>&nbsp;<\/p>\n<h1>Redis\u54e8\u5175<\/h1>\n<p>\u51c6\u5907Redis Sentinel\u73af\u5883\u3002\u672c\u6b21\u5c06\u5728\u4ee5\u4e0b\u6587\u7ae0\u4e2d\u4ecb\u7ecd\u7684\u73af\u5883\u4e0b\u8fdb\u884c\u3002<\/p>\n<p>&nbsp;<\/p>\n<h1>\u4ece\u5e94\u7528\u7a0b\u5e8f\uff08Redis \u5ba2\u6237\u7aef\uff09\u80fd\u591f\u770b\u5230\u7684 Redis Sentinel<\/h1>\n<p>\u4ee5\u4e0b\u662f\u5173\u4e8e\u4e0d\u4f7f\u7528HAProxy\u7684\u4e00\u79cd\u60c5\u51b5\u7684\u8bf4\u660e\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/11-0.jpeg\" alt=\"redis-sentinel-1-first.jpg\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/12-0.jpeg\" alt=\"redis-sentinel-2-serverdown.jpg\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/13-0.jpeg\" alt=\"redis-sentinel-3-masterchange.jpg\" \/><\/div>\n<p>\u70ba\u4e86\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u672c\u6587\u5c07\u4ecb\u7d39\u4f7f\u7528 HAProxy \u7684\u4f8b\u5b50\u3002<\/p>\n<h1>\u51c6\u5907\u8fd0\u884cHAProxy\u7684\u5b9e\u4f8b\u3002<\/h1>\n<p>\u521b\u5efa Linode\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Tokyo Region<\/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\">Ubuntu 22.04 LTS<\/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\">Linode 2GB Plan<\/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\">Private IP \u3092\u30aa\u30f3\u306b\u3059\u308b (\u5f8c\u304b\u3089\u3067\u3082\u8ffd\u52a0\u53ef\u80fd\uff09<\/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\">Linode Label: haproxy-redis-tokyo<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Tags: Redis Sentinel \u3068\u540c\u3058<\/ul>\n<p>\u5c06\u8bbe\u7f6e\u597d\u7684\u79c1\u6709IP\u5730\u5740\u8bb0\u4e0b\u6765\uff0c\u4ee5\u540e\u4f1a\u7528\u5230\u3002<\/p>\n<pre class=\"post-pre\"><code>localhost:~# ip -4 a show dev eth0\r\n2: eth0: &lt;BROADCAST,MULTICAST,UP,LOWER_UP&gt; mtu 1500 qdisc mq state UP group default qlen 1000\r\n    inet 172.104.79.130\/24 brd 172.104.79.255 scope global eth0\r\n       valid_lft forever preferred_lft forever\r\n    inet {PUBLIC_IP_ADDRESS}\/17 brd 192.168.255.255 scope global eth0\r\n       valid_lft forever preferred_lft forever\r\n<\/code><\/pre>\n<p>\u5c06\u5b9e\u4f8b\u8bbe\u7f6e\u4e3a\u5b89\u5168\u6a21\u5f0f\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u4e3a\u4e86\u80fd\u591f\u8fde\u63a5\u5230Redis\u670d\u52a1\u5668\uff0c\u9700\u8981\u5728\/etc\/hosts\u6587\u4ef6\u4e2d\u6ce8\u518cIP\u5730\u5740\u3002<\/p>\n<pre class=\"post-pre\"><code># BEGIN redis servers\r\n# Redis\r\n192.168.198.87 redissentinel-tokyo1 redis_1\r\n192.168.198.103 redissentinel-tokyo2 redis_2\r\n192.168.198.112 redissentinel-tokyo3 redis_3\r\n# END redis servers\r\n<\/code><\/pre>\n<h1>Redis\u670d\u52a1\u5668\u7684\u914d\u7f6e\u8bbe\u7f6e<\/h1>\n<p>\u6211\u4f1a\u914d\u7f6e\u9632\u706b\u5899\u4ee5\u5141\u8bb8 HAProxy \u8bbf\u95ee\u3002<\/p>\n<pre class=\"post-pre\"><code>  &lt;source address=\"{PUBLIC_IP_ADDRESS}\"\/&gt;\r\n<\/code><\/pre>\n<p>\u9996\u5148\u5fc5\u987b\u5728\u4e3b\u670d\u52a1\u5668\u73af\u5883\u4e0b\u8fdb\u884c\u8bbe\u7f6e\uff0c\u6700\u7ec8\u9700\u8981\u5728\u6240\u6709Redis\u670d\u52a1\u5668\u6b63\u5e38\u8fd0\u884c\u7684Linux\u4e0a\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code>systemctl restart firewalld\r\n<\/code><\/pre>\n<h1>\u5b89\u88c5HAProxy<\/h1>\n<p>\u8bf7\u53c2\u8003 www.linode.com \u7684\u6587\u6863\uff0c\u5b89\u88c5 HAProxy\u3002<\/p>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code>apt update &amp;&amp; apt upgrade\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>sudo apt-get install haproxy\r\n<\/code><\/pre>\n<p>\u5f53\u5b89\u88c5\u6210\u529f\u540e\uff0c\u6211\u4eec\u5c06\u786e\u8ba4\u7248\u672c\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:\/etc\/haproxy# haproxy -v\r\nHAProxy version 2.4.22-0ubuntu0.22.04.1 2023\/03\/22 - https:\/\/haproxy.org\/\r\nStatus: long-term supported branch - will stop receiving fixes around Q2 2026.\r\nKnown bugs: http:\/\/www.haproxy.org\/bugs\/bugs-2.4.22.html\r\nRunning on: Linux 5.15.0-73-generic #80-Ubuntu SMP Mon May 15 15:18:26 UTC 2023 x86_64\r\n<\/code><\/pre>\n<h1>HAProxy \u7684\u914d\u7f6e\u6587\u4ef6<\/h1>\n<p>\u5728 &#8220;\/etc\/haproxy\/&#8221; \u76ee\u5f55\u4e0b\u6709\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:~# cd \/etc\/haproxy\/\r\nhaproxy-redis-tokyo:\/etc\/haproxy# ls\r\nerrors  haproxy.cfg\r\n<\/code><\/pre>\n<p>\u6211\u8981\u68c0\u67e5 haproxy.cfg \u6587\u4ef6\u3002\u6211\u9700\u8981\u5728\u8fd9\u4e2a\u6587\u4ef6\u4e0a\u6dfb\u52a0\u5185\u5bb9\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:\/etc\/haproxy# cat haproxy.cfg\r\nglobal\r\n    log \/dev\/log\tlocal0\r\n    log \/dev\/log\tlocal1 notice\r\n    chroot \/var\/lib\/haproxy\r\n    stats socket \/run\/haproxy\/admin.sock mode 660 level admin expose-fd listeners\r\n    stats timeout 30s\r\n    user haproxy\r\n    group haproxy\r\n    daemon\r\n\r\n\t# Default SSL material locations\r\n\tca-base \/etc\/ssl\/certs\r\n\tcrt-base \/etc\/ssl\/private\r\n\r\n\t# See: https:\/\/ssl-config.mozilla.org\/#server=haproxy&amp;server-version=2.0.3&amp;config=intermediate\r\n        ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384\r\n        ssl-default-bind-ciphersuites TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256\r\n        ssl-default-bind-options ssl-min-ver TLSv1.2 no-tls-tickets\r\n\r\ndefaults\r\n\tlog\tglobal\r\n\tmode\thttp\r\n\toption\thttplog\r\n\toption\tdontlognull\r\n        timeout connect 5000\r\n        timeout client  50000\r\n        timeout server  50000\r\n\terrorfile 400 \/etc\/haproxy\/errors\/400.http\r\n\terrorfile 403 \/etc\/haproxy\/errors\/403.http\r\n\terrorfile 408 \/etc\/haproxy\/errors\/408.http\r\n\terrorfile 500 \/etc\/haproxy\/errors\/500.http\r\n\terrorfile 502 \/etc\/haproxy\/errors\/502.http\r\n\terrorfile 503 \/etc\/haproxy\/errors\/503.http\r\n\terrorfile 504 \/etc\/haproxy\/errors\/504.http\r\n<\/code><\/pre>\n<h2>Redis\u7684\u914d\u7f6e<\/h2>\n<p>\u6211\u8981\u6dfb\u52a0\u4ee5\u4e0b\u8bbe\u7f6e\u3002\u8fd9\u4e2a\u4f8b\u5b50\u662f\u6ce8\u518c\u4f5c\u4e3a\u4e3b\u8282\u70b9\u8fd0\u884c\u7684 redis_2 \u7684\u4f8b\u5b50\u3002<\/p>\n<pre class=\"post-pre\"><code># Specifies TCP timeout on connect for use by the frontend ft_redis\r\n# Set the max time to wait for a connection attempt to a server to succeed\r\n# The server and client side expected to acknowledge or send data.\r\ndefaults REDIS\r\n    mode tcp\r\n    timeout connect 3s\r\n    timeout server 6s\r\n    timeout client 6s\r\n\r\n# Specifies listening socket for accepting client connections using the default\r\n# REDIS TCP timeout and backend bk_redis TCP health check.\r\nfrontend ft_redis\r\n    bind *:6379 name redis\r\n    default_backend bk_redis\r\n\r\n# Specifies the backend Redis proxy server TCP health settings\r\n# Ensure it only forward incoming connections to reach a master.\r\nbackend bk_redis\r\n    server redis_6379 redis_2:6379 check inter 1s\r\n<\/code><\/pre>\n<h2>\u8bbe\u7f6e\u7528\u4e8e\u7edf\u8ba1\u9875\u9762\u7684\u914d\u7f6e<\/h2>\n<p>\u5f53\u60a8\u4f7f\u7528\u6b64\u8bbe\u7f6e\u540e\uff0cHAProxy\u53ef\u4ee5\u663e\u793a\u8f6c\u53d1\u7684Redis\u670d\u52a1\u5668\u7684\u72b6\u6001\u3002\u7a0d\u540e\u5c06\u4e3a\u60a8\u4ecb\u7ecd\u4f7f\u7528\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code>#\r\nlisten stats\r\n    mode http\r\n    bind {HAproxy \u306e Public IP}:7000\r\n    stats uri \/\r\n    stats auth {\u30e6\u30fc\u30b6\u30fc\u540d}:{\u30d1\u30b9\u30ef\u30fc\u30c9}\r\n    stats refresh 10s\r\n    stats show-legends\r\n<\/code><\/pre>\n<p>stats auth \u662f\u8bbf\u95ee Stats \u7684\u51ed\u8bc1\u3002<\/p>\n<div>\u5f53\u4e0d\u4f7f\u7528\u65f6\uff0c\u8bf7\u6ce8\u91ca\u6389\u4ee5\u5c06\u5176\u5173\u95ed\u3002<\/div>\n<h1>redis\u547d\u4ee4\u884c\u754c\u9762<\/h1>\n<p>\u70ba\u4e86\u6aa2\u67e5\u8a2d\u5b9a\uff0c\u53d6\u5f97redis-cli\u3002<\/p>\n<pre class=\"post-pre\"><code>apt install redis\r\n<\/code><\/pre>\n<p>\u53d1\u751f\u4e86\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:\/etc\/haproxy# apt install redis\r\nReading package lists... Done\r\nBuilding dependency tree... Done\r\nReading state information... Done\r\nE: Unable to locate package redis-cli\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u89e3\u51b3\u4e86\u95ee\u9898\u3002<\/p>\n<pre class=\"post-pre\"><code>add-apt-repository universe\r\n<\/code><\/pre>\n<p>\u6211\u5c06\u5c1d\u8bd5\u91cd\u65b0\u5b89\u88c5\u3002<\/p>\n<pre class=\"post-pre\"><code>apt install redis\r\n<\/code><\/pre>\n<div>\u8bf7\u5b89\u88c5redis-server\u5e76\u542f\u52a8\u8fdb\u7a0b\u3002\u8bf7\u505c\u6b62\u4e0d\u9700\u8981\u7684\u8fdb\u7a0b\u3002\u5177\u4f53\u6b65\u9aa4\u5c06\u7a0d\u540e\u8bf4\u660e\u3002<\/div>\n<p>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u68c0\u67e5\u7248\u672c\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:~# redis-cli -v\r\nredis-cli 6.0.16\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u5efa\u7acbTLS\u8fde\u63a5\uff0c\u9700\u8981\u590d\u5236Redis Server\u4e2d\u7684\/etc\/redis\/tls\/ca.crt\u6587\u4ef6\u5230\u672c\u5730\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:\/etc\/haproxy# pwd\r\n\/etc\/haproxy\r\nhaproxy-redis-tokyo:\/etc\/haproxy# ls -l tls\r\ntotal 4\r\n-r--r----- 1 haproxy haproxy 2029 Jul  1 02:49 redissentinel-tokyo_ca.crt\r\n<\/code><\/pre>\n<p>\u5c06REdISCLI_AUTH\u8bbe\u7f6e\u4e3a\u73af\u5883\u53d8\u91cf\u3002<\/p>\n<pre class=\"post-pre\"><code>export REDISCLI_AUTH=`Redis \u306b\u63a5\u7d9a\u3059\u308b\u305f\u3081\u306e\u30d1\u30b9\u30ef\u30fc\u30c9`\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u7531\u4e8e redis_2 \u5df2\u7ecf\u88ab\u8bbe\u7f6e\u4e3a\u4e3b\u673a\uff0c\u6240\u4ee5\u53ef\u4ee5\u4f7f\u7528-h\u9009\u9879\u6765\u6307\u5b9a\u5b83\u3002\u8bc1\u4e66\u8bf7\u63d0\u524d\u590d\u5236\u6307\u5b9a\u7684\u6587\u4ef6\u3002\u5728\u8fd9\u91cc\u53ea\u662f\u8fdb\u884c redis-cli \u7684\u64cd\u4f5c\u9a8c\u8bc1\uff0c\u5e76\u975e\u901a\u8fc7 HAProxy \u8fdb\u884c\u8fde\u63a5\u9a8c\u8bc1\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:~# redis-cli -h redis_2 --tls --cacert \/etc\/haproxy\/tls\/redissentinel-tokyo_ca.crt\r\nredis_2:6379&gt; ping\r\nPONG\r\n<\/code><\/pre>\n<p>\u5982\u679c\u80fd\u6253\u4e52\u4e53\u7403\uff0c\u5c31\u8868\u793a\u8fde\u63a5\u5df2\u6210\u529f\u7ecf\u8fc7\u8ba4\u8bc1\u3002<\/p>\n<p>\u6211\u4f1a\u786e\u8ba4\u662f\u5426\u53ef\u4ee5\u8fdb\u884c\u4e66\u5199\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:~# redis-cli -h redis_2 --tls --cacert \/etc\/haproxy\/tls\/redissentinel-tokyo_ca.crt\r\n\r\nredis_2:6379&gt; get scott\r\n\"tiger\"\r\nredis_2:6379&gt; set scott lion\r\nOK\r\nredis_2:6379&gt; get scott\r\n\"lion\"\r\n<\/code><\/pre>\n<p>\u7531\u4e8e\u5ba2\u6237\u7aef\u6210\u529f\u8fde\u63a5\u5230\u4e3b\u670d\u52a1\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u6539Scott\u7684\u952e\u503c\u3002<\/p>\n<h2>\u5728 HAProxy \u4e0a\u505c\u6b62 Redis \u670d\u52a1\u5668<\/h2>\n<p>\u6211\u4e3a\u4e86\u4f7f\u7528redis-cli\uff0c\u5b89\u88c5\u4e86Redis\uff0c\u4f46\u662f\u5982\u679cRedis\u670d\u52a1\u5668\u6b63\u5728\u8fd0\u884c\uff0c\u53ef\u80fd\u4f1a\u5728\u4ee5\u540e\u51fa\u73b0\u95ee\u9898\uff0c\u6240\u4ee5\u6211\u5c06\u5176\u505c\u6b62\u3002<\/p>\n<pre class=\"post-pre\"><code>systemctl stop redis-server\r\nsystemctl disable redis-server\r\n<\/code><\/pre>\n<p>\u5b9e\u9645\u53d1\u751f\u7684\u95ee\u9898\u662f\u4e0eHAProxy\u7684\u7ed1\u5b9a\u8bbe\u7f6e\u51b2\u7a81\u3002\u5c3d\u7ba1\u672c\u6b21\u4e0d\u4f1a\u5b9e\u65bd\uff0c\u4f46\u5f53\u5728\u5b9e\u73b0HAProxy\u5197\u4f59\u65f6\uff0c\u5982\u679credis-server\u6b63\u5728\u76d1\u542c6379\u7aef\u53e3\uff0c\u5219\u7c7b\u4f3c\u5982\u4e0b\u7684\u7ed1\u5b9a\u8bbe\u7f6e\u4f1a\u5bfc\u81f4HAProxy\u542f\u52a8\u5931\u8d25\u3002<\/p>\n<pre class=\"post-pre\"><code>bind *:6379\r\n<\/code><\/pre>\n<p>\u56e0\u6b64\uff0c\u9700\u8981\u6307\u5b9a\u7279\u5b9a\u7684 IP\u3002\u4f8b\u5982\uff0c\u9700\u8981\u8fdb\u884c\u4ee5\u4e0b\u8bbe\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code>bind {Server \u306e IP address}:6379\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd9\u6837\u7684\u8bbe\u7f6e\uff0c\u95ee\u9898\u53ef\u4ee5\u5f97\u5230\u89e3\u51b3\uff0c\u4f46\u662f\u5728\u53e6\u4e00\u7bc7\u6587\u7ae0\u4e2d\u4ecb\u7ecd\u7684\u4f7f\u7528 keepalive \u8bbe\u7f6e\u7684 VIP\uff0c\u7531\u4e8e\u4f5c\u4e3a\u5907\u4efd\u7684\u670d\u52a1\u5668\u7aef\u6ca1\u6709\u8be5 VIP \u8fd0\u884c\uff0c\u6240\u4ee5\u65e0\u6cd5\u5728\u542f\u52a8 HAProxy \u65f6\u7ed1\u5b9a\u8be5 VIP\u3002\u56e0\u6b64\uff0c\u5373\u4f7f\u901a\u8fc7 keepalived \u8fdb\u884c\u6545\u969c\u8f6c\u79fb\uff0c\u4e5f\u65e0\u6cd5\u8fde\u63a5\u5230 HAProxy\uff0c\u56e0\u4e3a\u5b83\u6ca1\u6709\u7ed1\u5b9a\u5230 VIP\u3002\u540c\u6837\uff0c\u901a\u8fc7\u505c\u6b62 HAProxy \u4e0a\u7684 redis-server\uff0c\u4e5f\u53ef\u4ee5\u66f4\u8f7b\u677e\u5730\u8fdb\u884c\u50cf bind *:6379 \u8fd9\u6837\u7684\u8bbe\u7f6e\uff0c\u5e76\u4e14\u95ee\u9898\u4e5f\u4f1a\u5f97\u5230\u89e3\u51b3\u3002<\/p>\n<h1>\u5c06\u76d1\u6d4b\u529f\u80fd\u6dfb\u52a0\u5230HAProxy\u4e2d\u3002<\/h1>\n<h2>\u5916\u90e8\u68c0\u67e5<\/h2>\n<p>HAProxy\u7684external-check\u662f\u4e00\u4e2a\u975e\u5e38\u65b9\u4fbf\u7684\u529f\u80fd\uff0c\u5b83\u53ef\u4ee5\u542f\u52a8\u5916\u90e8\u547d\u4ee4\u6765\u76d1\u89c6\u72b6\u6001\u3002\u901a\u8fc7\u5229\u7528\u8fd9\u4e2a\u529f\u80fd\uff0c\u6211\u4eec\u53ef\u4ee5\u6ce8\u518c\u4e00\u4e2a\u811a\u672c\u3002\u5728\u811a\u672c\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u542f\u52a8\u4ee5\u4e0b\u547d\u4ee4\uff0c\u5e76\u4e14\u4e0d\u65ad\u5730\u76d1\u89c6\u54ea\u4e2a\u670d\u52a1\u5668\u662f\u4e3b\u670d\u52a1\u5668\u3002<\/p>\n<div>\u8fd8\u53ef\u4ee5\u4f7f\u7528tcp-check\u8fdb\u884c\u68c0\u67e5\uff0c\u4f46\u662f\u7531\u4e8e\u9700\u8981\u4f7f\u7528TLS\u8fdb\u884c\u8fde\u63a5\uff0c\u6240\u4ee5\u6211\u4eec\u4f7f\u7528external-check\u3002<\/div>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:~# \/usr\/bin\/redis-cli --no-auth-warning -a $password -h redis_1 -p 6379 --tls --cacert \/etc\/haproxy\/tls\/redissentinel-tokyo_ca.crt INFO REPLICATION | egrep role\r\nrole:slave\r\n\r\nhaproxy-redis-tokyo:~# \/usr\/bin\/redis-cli --no-auth-warning -a $password -h redis_2 -p 6379 --tls --cacert \/etc\/haproxy\/tls\/redissentinel-tokyo_ca.crt INFO REPLICATION | egrep role\r\nrole:master\r\n<\/code><\/pre>\n<p>\u5c06\u6307\u5b9a\u4e3a\u201cexternal_check\u201d\u7684\u811a\u672c\u653e\u7f6e\u5728\u67d0\u5904\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:\/etc\/haproxy# ls -l bin\r\ntotal 4\r\n-rwxr-x--- 1 haproxy haproxy 459 Jul  1 12:52 check_redis_master.sh\r\n<\/code><\/pre>\n<p>\u8fd9\u662f\u4e00\u4e2a\u7531\u5916\u90e8\u68c0\u67e5\u542f\u52a8\u7684\u811a\u672c\u3002<\/p>\n<pre class=\"post-pre\"><code>#!\/bin\/bash\r\npassword='YOUR_REDIS_SERVER_PASSWORD'\r\nip_adr=$(echo $@ | awk '{print$3}')\r\ncommand='INFO REPLICATION'\r\nredis_server_role=$(\/usr\/bin\/redis-cli --no-auth-warning -a $password -h $ip_adr -p 6379 --tls --cacert \/etc\/haproxy\/tls\/redissentinel-tokyo_ca.crt $command | grep role | awk -F ':' '{print $2}' | tr -d '\\r')\r\n\r\nif [[ $redis_server_role == 'master' ]]; then\r\n        exit 0\r\nelse\r\n        exit 1\r\nfi\r\n<\/code><\/pre>\n<h2>haproxy\u914d\u7f6e\u6587\u4ef6\u3002<\/h2>\n<p>\u5c06 haproxy.cfg \u4e2d\u7684 global \u90e8\u5206\u66f4\u6539\u4e3a\u4ee5\u4e0b\u5185\u5bb9\uff1a\u65b0\u589e insecure-fork-wanted\u3001insecure-setuid-wanted\u3001external-check \u9009\u9879\u3002<\/p>\n<pre class=\"post-pre\"><code>global\r\n    insecure-fork-wanted\r\n    insecure-setuid-wanted\r\n\texternal-check\r\n\tlog \/dev\/log\tlocal0\r\n\tlog \/dev\/log\tlocal1 notice\r\n#\tchroot \/var\/lib\/haproxy\r\n\tstats socket \/run\/haproxy\/admin.sock mode 660 level admin expose-fd listeners\r\n\tstats timeout 30s\r\n\tuser haproxy\r\n\tgroup haproxy\r\n\tdaemon\r\n<\/code><\/pre>\n<p>\u5c06\u540e\u7aef\u8bbe\u7f6e\u4e3a\u4f7f\u7528 external-check \u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code># Specifies the backend Redis proxy server TCP health settings\r\n# Ensure it only forward incoming connections to reach a master.\r\nbackend bk_redis\r\n    option external-check\r\n    external-check path \"\/usr\/bin:\/bin:\/usr\/local\/bin\"\r\n    external-check command \/etc\/haproxy\/bin\/check_redis_master.sh\r\n    server redis_6379 redis_2:6379 check inter 10s\r\n<\/code><\/pre>\n<p>\u91cd\u542fHAProxy\u3002<\/p>\n<pre class=\"post-pre\"><code>systemctl restart haproxy\r\n<\/code><\/pre>\n<p>\u5728\/var\/log\/haproxy.log\u4e2d\u663e\u793a\u4e86\u5bf9redis_2\u8fdb\u884c\u72b6\u6001\u68c0\u67e5\u7684\u65e5\u5fd7\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:\/etc\/haproxy# tail -f \/var\/log\/haproxy.log\r\nJul  1 04:22:33 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:22:33.071] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17812 - - LR-- 2\/2\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:22:43 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:22:43.143] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17812 - - LR-- 2\/2\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:22:53 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:22:53.255] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17812 - - LR-- 2\/2\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:23:03 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:23:03.337] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17810 - - LR-- 2\/2\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:23:13 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:23:13.435] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17812 - - LR-- 1\/1\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:23:23 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:23:23.539] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17812 - - LR-- 1\/1\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:23:33 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:23:33.626] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17812 - - LR-- 2\/2\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:23:43 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:23:43.698] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17812 - - LR-- 2\/2\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:23:53 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:23:53.802] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17812 - - LR-- 2\/2\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:24:03 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:24:03.879] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17810 - - LR-- 2\/2\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\nJul  1 04:24:13 haproxy-redis-tokyo haproxy[15891]: XX.XX.XX.XX:64282 [01\/Jul\/2023:04:24:13.954] stats stats\/&lt;STATS&gt; 0\/0\/0\/0\/0 200 17812 - - LR-- 1\/1\/0\/0\/0 0\/0 \"GET \/ HTTP\/1.1\"\r\n<\/code><\/pre>\n<p>Redis-cli\u4e5f\u5728\u8fd0\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:~# redis-cli -h redis_2 --tls --cacert \/etc\/haproxy\/tls\/redissentinel-tokyo_ca.crt\r\nredis_2:6379&gt; ping\r\nPONG\r\nredis_2:6379&gt; get scott\r\n\"lion\"\r\nredis_2:6379&gt; set dixson\r\n(error) ERR wrong number of arguments for 'set' command\r\nredis_2:6379&gt; set scott dixson\r\nOK\r\nredis_2:6379&gt; get scott\r\n\"dixson\"\r\nredis_2:6379&gt; quit\r\n<\/code><\/pre>\n<h2>\u7edf\u8ba1\u6570\u636e<\/h2>\n<p>\u8bf7\u8bbf\u95eehttp:\/\/\u516c\u5171IP\u5730\u5740\u7684HAProxy\u670d\u52a1\u5668\uff1a7000\/\u3002\u5c06\u663e\u793a\u4ee5\u4e0b\u9875\u9762\uff0c\u8bf7\u5148\u786e\u8ba4\u9875\u9762\u662f\u5426\u5df2\u6253\u5f00\u3002\u8f93\u5165\u5728haproxy.cfg\u6587\u4ef6\u7684auth\u4e2d\u6307\u5b9a\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/101-0.jpeg\" alt=\"haproxy-status.jpg\" \/><\/div>\n<p>\u7136\u540e\u5c06\u6240\u6709\u7684Redis\u670d\u52a1\u5668\u6ce8\u518c\u5230haproxy.cfg\u4e2d\u3002\u8fdb\u884c\u5982\u4e0b\u4fee\u6539\u3002<\/p>\n<pre class=\"post-pre\"><code>\u5909\u66f4\u524d\r\nserver redis_6379 redis_2:6379 check inter 10s\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>\u5909\u66f4\u5f8c\r\nserver redis_6379_1 redis_1:6379 check inter 1s\r\nserver redis_6379_2 redis_2:6379 check inter 1s\r\nserver redis_6379_3 redis_3:6379 check inter 1s\r\n<\/code><\/pre>\n<div>\u8bf7\u4e0d\u8981\u5fd8\u8bb0\u4e3a Redis \u670d\u52a1\u5668\u8bbe\u7f6e\u9632\u706b\u5899\u3002<\/div>\n<p>\u5c06HAProxy\u91cd\u65b0\u542f\u52a8\u3002<\/p>\n<pre class=\"post-pre\"><code>systemctl restart haproxy\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/108-0.jpeg\" alt=\"haproxy-status-3node.jpg\" \/><\/div>\n<h1>\u4e3b\u4eba\u7684\u5207\u6362<\/h1>\n<h2>\u6765\u81eaHAProxy\u670d\u52a1\u5668\u7684\u5ba2\u6237\u7aef\u786e\u8ba4\u3002<\/h2>\n<p>\u505c\u6b62 Redis_2 \u670d\u52a1\u5668\uff0c\u4f5c\u4e3a\u4e3b\u670d\u52a1\u5668\u8fd0\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code>systemctl stop redis-server\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/113-0.jpeg\" alt=\"haxproxy-status-masterdown.jpg\" \/><\/div>\n<p>\u4f7f\u7528HAProxy\u4e3b\u673a\u7684Redis-cli\u8fdb\u884c\u8fde\u63a5\u3002\u8fde\u63a5\u5230\u7684\u670d\u52a1\u5668\u7684\u89d2\u8272\u662fmaster\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:~# redis-cli --tls --cacert  redissentinel-tokyo_ca.crt info replication\r\n# Replication\r\nrole:master\r\nconnected_slaves:1\r\nslave0:ip=192.168.198.87,port=6379,state=online,offset=29561919,lag=1\r\nmaster_failover_state:no-failover\r\nmaster_replid:a284a16594fa8ce12b0db3b2d52eb4a185132ed5\r\nmaster_replid2:4831258c3aa4c7d8d6c9e0eb1244acb86c511c8a\r\nmaster_repl_offset:29562064\r\nsecond_repl_offset:29497534\r\nrepl_backlog_active:1\r\nrepl_backlog_size:1048576\r\nrepl_backlog_first_byte_offset:28493428\r\nrepl_backlog_histlen:1068637\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/116-0.jpeg\" alt=\"redis_haproxy-failover.jpg.jpg\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/117-0.jpeg\" alt=\"haproxy-status-3takesmasterrole.jpg\" \/><\/div>\n<h2>Redis\u5ba2\u6237\u7aef\u8fde\u63a5\u4ece\u5e94\u7528\u7a0b\u5e8f<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/119-0.jpeg\" alt=\"redis-haproxy-client.jpg.jpg\" \/><\/div>\n<p>\u5c06 HAProxy \u7684\u79c1\u6709 IP \u6ce8\u518c\u5230 \/etc\/hosts \u6587\u4ef6\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code>{PUBLIC_IP_ADDRESS} redis-haproxy\r\n<\/code><\/pre>\n<p>\u8bbe\u7f6eREDISCLI_AUTH\u73af\u5883\u53d8\u91cf\u3002\u8be5\u53d8\u91cf\u5bf9\u5e94\u4e8e\u5728\u5b89\u88c5\u4e86Redis Sentinel\u7684\u60c5\u51b5\u4e0b\uff0c\u7528\u6237\u7684\u4e3b\u76ee\u5f55\u4e0b\u521b\u5efa\u7684deployment-secrets.txt\u6587\u4ef6\u4e2d\u8bb0\u5f55\u7684redis\u5bc6\u7801\u3002<\/p>\n<p>\u8fde\u63a5\u5230HAProxy\u3002<\/p>\n<pre class=\"post-pre\"><code>redisclient:~# redis-cli -h redis-haproxy --tls --cacert redissentinel-tokyo_ca.crt ping\r\nPONG\r\n<\/code><\/pre>\n<p>\u901a\u8fc7HAProxy\uff0c\u5c06\u59cb\u7ec8\u8fde\u63a5\u5230\u4e3b\u670d\u52a1\u5668\u3002<\/p>\n<pre class=\"post-pre\"><code>redisclient:~# redis-cli -h redis-haproxy --tls --cacert redissentinel-tokyo_ca.crt info replication\r\n# Replication\r\nrole:master\r\nconnected_slaves:1\r\nslave0:ip=192.168.198.87,port=6379,state=online,offset=29619571,lag=1\r\nmaster_failover_state:no-failover\r\nmaster_replid:a284a16594fa8ce12b0db3b2d52eb4a185132ed5\r\nmaster_replid2:4831258c3aa4c7d8d6c9e0eb1244acb86c511c8a\r\nmaster_repl_offset:29619585\r\nsecond_repl_offset:29497534\r\nrepl_backlog_active:1\r\nrepl_backlog_size:1048576\r\nrepl_backlog_first_byte_offset:28554748\r\nrepl_backlog_histlen:1064838\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>redisclient:~# redis-cli -h redis-haproxy --tls --cacert redissentinel-tokyo_ca.crt role\r\n1) \"master\"\r\n2) (integer) 29621755\r\n3) 1) 1) \"192.168.198.87\"\r\n      2) \"6379\"\r\n      3) \"29621321\"\r\n<\/code><\/pre>\n<p>\u542f\u52a8\u505c\u6b62\u7684 Redis_2 \u7684 redis-server\u3002<\/p>\n<pre class=\"post-pre\"><code>redissentinel-tokyo2:~# systemctl start redis-server\r\n<\/code><\/pre>\n<p>\u6211\u5011\u4e5f\u53ef\u4ee5\u770b\u51fa\u5b83\u662f\u4ee5\u8907\u88fd\u54c1\u7684\u5f62\u5f0f\u555f\u52d5\uff0c\u800c\u4e0d\u662f\u539f\u672c\u7684\u7248\u672c\u3002<\/p>\n<pre class=\"post-pre\"><code>haproxy-redis-tokyo:~# \/usr\/bin\/redis-cli --no-auth-warning -a $password -h redis_2 -p 6379 --tls --cacert \/etc\/haproxy\/tls\/redissentinel-tokyo_ca.crt INFO REPLICATION | egrep role\r\nrole:slave\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/132-0.jpeg\" alt=\"redsi-haproxy-client-allup.jpg.jpg\" \/><\/div>\n<h2>\u505c\u6b62\u4e3b\u670d\u52a1\u5668<\/h2>\n<p>\u4f7f\u7528Redis Client\u5c06redis-cli\u8fde\u63a5\u5230HAproxy\u3002<\/p>\n<pre class=\"post-pre\"><code>redisclient:~# redis-cli -h redis-haproxy --tls --cacert redissentinel-tokyo_ca.crt\r\nredis-haproxy:6379&gt; ping\r\nPONG\r\nredis-haproxy:6379&gt; info replication\r\n# Replication\r\nrole:master\r\nconnected_slaves:2\r\nslave0:ip=192.168.198.87,port=6379,state=online,offset=29954946,lag=0\r\nslave1:ip=192.168.198.103,port=6379,state=online,offset=29954946,lag=0\r\nmaster_failover_state:no-failover\r\nmaster_replid:a284a16594fa8ce12b0db3b2d52eb4a185132ed5\r\nmaster_replid2:4831258c3aa4c7d8d6c9e0eb1244acb86c511c8a\r\nmaster_repl_offset:29955235\r\nsecond_repl_offset:29497534\r\nrepl_backlog_active:1\r\nrepl_backlog_size:1048576\r\nrepl_backlog_first_byte_offset:28902228\r\nrepl_backlog_histlen:1053008\r\n<\/code><\/pre>\n<p>\u505c\u6b62 Redis_3\uff0c\u4f5c\u4e3a\u4e3b\u670d\u52a1\u3002<\/p>\n<pre class=\"post-pre\"><code>redissentinel-tokyo3:~# systemctl stop redis-server\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/138-0.jpeg\" alt=\"redis-haproxy-redis3-down.jpg\" \/><\/div>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/139-0.jpeg\" alt=\"redis-master-switch-from3to2.jpg\" \/><\/div>\n<p>\u5728Redis\u5ba2\u6237\u7aef\u4e2d\uff0c\u4eceredis-cli\u5df2\u8fde\u63a5\u7684\u72b6\u6001\u4e0b\u91cd\u65b0\u6267\u884c\u547d\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code>redis-haproxy:6379&gt; info replication\r\n# Replication\r\nrole:master\r\nconnected_slaves:1\r\nslave0:ip=192.168.198.87,port=6379,state=online,offset=29971306,lag=1\r\nmaster_failover_state:no-failover\r\nmaster_replid:fbb1e8bf9574889409d0bdfdcb78d4d56387877b\r\nmaster_replid2:a284a16594fa8ce12b0db3b2d52eb4a185132ed5\r\nmaster_repl_offset:29971306\r\nsecond_repl_offset:29967061\r\nrepl_backlog_active:1\r\nrepl_backlog_size:1048576\r\nrepl_backlog_first_byte_offset:29765770\r\nrepl_backlog_histlen:205537\r\nredis-haproxy:6379&gt; role\r\n1) \"master\"\r\n2) (integer) 29974806\r\n3) 1) 1) \"192.168.198.87\"\r\n      2) \"6379\"\r\n      3) \"29974806\"\r\n<\/code><\/pre>\n<p>\u901a\u8fc7redis-cli\u53ef\u4ee5\u5224\u65ad\u5230\u4e3b\u8282\u70b9\u7684IP\u5728\u8fde\u63a5\u72b6\u6001\u4e0b\u53d1\u751f\u4e86\u53d8\u5316\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d184f37434c4406c062bb\/143-0.jpeg\" alt=\"redis-haproxy-client-failover-again.jpg\" \/><\/div>\n<p>\u8bf7\u53c2\u8003\u4ee5\u4e0b\u5185\u5bb9\uff0c\u4e86\u89e3\u5f53Redis\u670d\u52a1\u5668\u4e3b\u8282\u70b9\u5b95\u673a\u65f6\uff0c\u65e5\u5fd7\u548c\u6587\u4ef6\u662f\u5982\u4f55\u8bb0\u5f55\u7684\u3002<\/p>\n<p>&nbsp;<\/p>\n<h1>\u603b\u7ed3\u4e00\u4e0b<\/h1>\n<p>\u901a\u8fc7\u4f7f\u7528Redis Sentinel\u548cHAProxy\uff0c\u6211\u4eec\u4fdd\u6301\u4e86Redis\u670d\u52a1\u5668\u7684\u9ad8\u53ef\u7528\u6027\uff0c\u5e76\u786e\u4fdd\u5e94\u7528\u7a0b\u5e8f\u59cb\u7ec8\u80fd\u591f\u8fde\u63a5\u5230Redis\u7684\u4e3b\u670d\u52a1\u5668\u3002<\/p>\n<p>\u5982\u679c\u5c06HAProxy\u914d\u7f6e\u4e3a\u9ad8\u53ef\u7528\u6027(H\/A)\u6a21\u5f0f\uff0c\u53ef\u4ee5\u6d88\u9664\u5355\u70b9\u6545\u969c(SPOF)\uff0c\u8bf7\u53c2\u8003\u4ee5\u4e0b\u6587\u7ae0\u3002<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Redis Sentinel\u662f\u4e00\u79cd\u9ad8\u53ef\u7528\u6027\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u4ee5\u68c0\u6d4b\u5230\u4e3b\u670d\u52a1\u5668\u7684\u6545\u969c\u5e76\u52a8\u6001\u5730\u5347\u7ea7\u4ece\u670d\u52a1\u5668\u4e3a\u4e3b\u670d\u52a1\u5668\u3002\u7136 [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-33496","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5728 Redis Sentinel \u67b6\u6784\u524d\uff0c\u5c06 HAProxy \u90e8\u7f72\u5e76\u59cb\u7ec8\u8fde\u63a5\u5230\u4e3b\u670d\u52a1\u5668\uff0c\u4ee5\u786e\u4fdd\u59cb\u7ec8\u80fd\u591f\u8fde\u63a5\u5230\u4e3b\u670d\u52a1\u5668 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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