那些年踩過的坑之Redis報錯:All sentinels down, cannot determine where is mymaster master is running...

本文轉載自查看原文 2019-07-29 15:13 6825 Redis/ BUG解決

1. 異常信息: All sentinels down, cannot determine where is mymaster master is running...

通過測試:

　　 @Test
    public void testSentinel(){
        HashSet<String> sentinels = new HashSet<>();
        sentinels.add("192.168.72.129:26379");
        JedisSentinelPool pool = new JedisSentinelPool("mymaster", sentinels);
        Jedis jedis = pool.getResource();
        jedis.set("hello", "world");
        System.out.println(jedis.get("hello"));
    }

報出錯誤:

警告: Cannot get master address from sentinel running @ 192.168.72.129:26379. 
Reason: redis.clients.jedis.exceptions.JedisConnectionException: 
Failed connecting to host 192.168.72.129:26379. Trying next one.
redis.clients.jedis.exceptions.JedisConnectionException: 
All sentinels down, cannot determine where is mymaster master is running...
(哨兵宕機, 不能確定主機位置)

還原報錯現場:

　　學習搭配redis過程中, 在linux虛擬機上配置完redis-sentinel( 即啟用redis哨兵配置搭建1主2從的redis服務器 )

　　開啟了redis-sentinel服務, ip和port號為: 192.168.72.129:26379

　　首先, 能確定的是, linux防火牆已然關閉, sentinel.conf 的配置中, (注釋掉bind)開放了不同主機的訪問, 同時, redis的保護模式也已經關閉!!!

但是jedis連接還是出現了問題, 那么既然不是redis服務器方配置或者防護的問題, 那么問題只能出在了我的操作系統win7中!!!

　　在此基礎上猜測, 是否是ip 連接或者是端口未開放呢?

　　於是通過以下操作:

　　cmd ->

　　telnet 192.168.72.129:26379

　　顯示錯誤: 正在連接192.168.72.129:26379...無法打開到主機的連接。在端口 23: 連接失敗

　-------　附win7中開啟telnet的方法: 站內他人博文鏈接:https://www.cnblogs.com/ylcms/p/7250129.html, 博主:雲龍筆記