Redis Cluster遇到JedisConnectionException: Could not get a resource from the pool

Question

1. 配置了最简单的Redis集群，3主3从，都配置在一台服务器上了。在redis-cli -c下测试能够get/set，在另外一台服务器能够连接到redis服务器，且能够执行get/set操作。确认服务器端口都开放了，能够正确访问。

2. 接下来使用Java来操作，遇到了JedisConnectionException: Could not get a resource from the pool这个问题

redis conf配置如下，其他的只是端口不一样

protected-mode no
port 7000
daemonize yes
dir "/usr/local/redis/cluster"
logfile "7000.log"
dbfilename "dump-7000.rdb"
cluster-enabled yes
cluster-config-file nodes-7000.conf
cluster-require-full-coverage no

代码如下

    @Test
    public void get() {
        Set<HostAndPort> nodes = new HashSet<HostAndPort>();
        nodes.add(new HostAndPort("47.x.13.116", 7000));
        nodes.add(new HostAndPort("47.x.13.116", 7001));
        nodes.add(new HostAndPort("47.x.13.116", 7002));
        nodes.add(new HostAndPort("47.x.13.116", 7003));
        nodes.add(new HostAndPort("47.x.13.116", 7004));
        nodes.add(new HostAndPort("47.x.13.116", 7005));
        JedisPoolConfig config = new JedisPoolConfig();
        JedisCluster jedisCluster = new JedisCluster(nodes, 30, 3, config);
        String value = jedisCluster.get("hello");
        System.out.println(value);
        Assert.assertEquals("word", value);
    }

详细错误

redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool

    at redis.clients.util.Pool.getResource(Pool.java:53)
    at redis.clients.jedis.JedisPool.getResource(JedisPool.java:226)
    at redis.clients.jedis.JedisSlotBasedConnectionHandler.getConnectionFromSlot(JedisSlotBasedConnectionHandler.java:66)
    at redis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:116)
    at redis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141)
    at redis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141)
    at redis.clients.jedis.JedisClusterCommand.run(JedisClusterCommand.java:31)
    at redis.clients.jedis.JedisCluster.get(JedisCluster.java:124)
    at JedisClusterTest.get(JedisClusterTest.java:24)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: connect timed out
    at redis.clients.jedis.Connection.connect(Connection.java:207)
    at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:93)
    at redis.clients.jedis.BinaryJedis.connect(BinaryJedis.java:1767)
    at redis.clients.jedis.JedisFactory.makeObject(JedisFactory.java:106)
    at org.apache.commons.pool2.impl.GenericObjectPool.create(GenericObjectPool.java:889)
    at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:424)
    at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:349)
    at redis.clients.util.Pool.getResource(Pool.java:49)
    ... 30 more
Caused by: java.net.SocketTimeoutException: connect timed out
    at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at redis.clients.jedis.Connection.connect(Connection.java:184)
    ... 37 more

Answer 1

https://blog.csdn.net/qq_25693315/article/details/84142204