Java客户端无法连接到运行在本地主机上的Redis Sentinel

Question

我在我的本地主机中设置了3个Redis服务器和3个Redis Sentinel实例。服务器运行在：

127.0.0.1:6379 // Master
127.0.0.1:6380 // Slave
127.0.0.1:6381 // Slave

哨兵们跑到：

127.0.0.1:5000
127.0.0.1:5001
127.0.0.1:5002

我有一个（Java）客户机，它试图连接到一个哨兵并在redis服务器中设置密钥：

// import statements

public class RedisPush {

    private static final String MASTER_NAME = "mymaster";
    private static final String PASSWORD = "foobared";
    private static final Set sentinels;
    static {
        sentinels = new HashSet();
        sentinels.add("127.0.0.1:5000");
        sentinels.add("127.0.0.1:5001");
        sentinels.add("127.0.0.1:5002");
    }

    public static void pushToRedis() {

        Jedis jedis = null;

        try {
            JedisSentinelPool pool = new JedisSentinelPool(MASTER_NAME, sentinels);
            System.out.println("Fetching connection from pool.");
            jedis = pool.getResource();
            jedis.auth(PASSWORD);
            Socket socket = jedis.getClient().getSocket();

            System.out.println("Connected to " + socket.getRemoteSocketAddress());
            int i = 0;
            while (true) {
                jedis.set("sentinel_key" + i, "value" + i);
                System.out.println(i);
                i++;
                Thread.sleep(1000);
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        finally {
            if(jedis != null)
                jedis.close();
        }

    }

    public static void main(String[] args) throws Exception {

        while(true) {

            pushToRedis();
            Thread.sleep(1000);
        }
    }
}

最初，我的哨兵配置如下（例如，在端口5000上运行的第一个哨兵）：

bind 127.0.0.1
port 5000
sentinel monitor mymaster 127.0.0.1 6379 2
sentinel down-after-milliseconds mymaster 5000
sentinel failover-timeout mymaster 60000
sentinel auth-pass mymaster foobared

如果我尝试运行我的（Java）客户机，我会得到以下错误：

Nov 23, 2018 1:52:57 AM redis.clients.jedis.JedisSentinelPool initSentinels
INFO: Trying to find master from available Sentinels...
Nov 23, 2018 1:52:57 AM redis.clients.jedis.JedisSentinelPool initSentinels
WARNING: Cannot get master address from sentinel running @ 192.168.0.102:5001. Reason: redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused (Connection refused). Trying next one.
Nov 23, 2018 1:52:57 AM redis.clients.jedis.JedisSentinelPool initSentinels
WARNING: Cannot get master address from sentinel running @ 192.168.0.102:5000. Reason: redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused (Connection refused). Trying next one.
Nov 23, 2018 1:52:57 AM redis.clients.jedis.JedisSentinelPool initSentinels
WARNING: Cannot get master address from sentinel running @ 192.168.0.102:5002. Reason: redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused (Connection refused). Trying next one.
redis.clients.jedis.exceptions.JedisConnectionException: All sentinels down, cannot determine where is mymaster master is running...
    at redis.clients.jedis.JedisSentinelPool.initSentinels(JedisSentinelPool.java:180)
    at redis.clients.jedis.JedisSentinelPool.<init>(JedisSentinelPool.java:95)
    at redis.clients.jedis.JedisSentinelPool.<init>(JedisSentinelPool.java:82)
    at redis.clients.jedis.JedisSentinelPool.<init>(JedisSentinelPool.java:70)
    at redis.clients.jedis.JedisSentinelPool.<init>(JedisSentinelPool.java:44)
    at RedisPush.pushToRedis(RedisPush.java:29)
    at RedisPush.main(RedisPush.java:61)

但是，如果我将sentinel配置脚本更改为下面的脚本：

# bind 127.0.0.1
port 5000
protected-mode no
sentinel monitor mymaster 127.0.0.1 6379 2
sentinel down-after-milliseconds mymaster 5000
sentinel failover-timeout mymaster 60000
sentinel auth-pass mymaster foobared

为什么注释出绑定并显式地将protected-mode设置为no起作用？

附言。我还尝试使用绑定127.0.0.1和保护模式NO，但即使这样也不起作用。

Answer 1

我也遇到过类似的问题，Jedis抛出了相同的错误，它与https://github.com/xetorthio/Jedis/issues/1367有关

为了在mac上解决这个问题，我做了sudo ifconfig lo0别名127.0.1.1，然后将sentinel.conf更改为bind127.0.1.1，然后更新了spring数据的yaml以连接到该ip

sentinel.nodes: 127.0.1.1:5000, 127.0.1.1:5002, 127.0.1.1:5003