来源:Java技术栈
链接:https://www.jianshu.com/p/883e7d94f6eb
添加配置信息
spring.redis:
database: 0 #Redis数据库索引(默认为0)
#host: 192.168.1.8
#port: 6379
password: 123456
timeout: 10000 # 连接超时时间(毫秒)
pool:
max-active: 8 # 连接池最大连接数(使用负值表示没有限制)
max-idle: 8 # 连接池中的最大空闲连接
max-wait:-1# 连接池最大阻塞等待时间(使用负值表示没有限制)
min-idle: 0 # 连接池中的最小空闲连接
cluster:
nodes:
-192.168.1.8:9001
-192.168.1.8:9002
-192.168.1.8:9003
只需要添加3个master节点,3个slave节点不需要添加。
你要做的也只有这些配置了,其他的spring boot都自动配置好了。
现在就可以像使用单机一样使用集群,redis会自动按key分片到不同的集群实例。
遇到的问题
Causedby:redis.clients.jedis.exceptions.JedisConnectionException:Couldnotgetaresourcefromthepool
atredis.clients.util.Pool.getResource(Pool.java:53)
atredis.clients.jedis.JedisPool.getResource(JedisPool.java:226)
atredis.clients.jedis.JedisSlotBasedConnectionHandler.getConnectionFromSlot(JedisSlotBasedConnectionHandler.java:66)
atredis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:116)
atredis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141)
atredis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141)
atredis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141)
atredis.clients.jedis.JedisClusterCommand.runWithRetries(JedisClusterCommand.java:141)
atredis.clients.jedis.JedisClusterCommand.runBinary(JedisClusterCommand.java:60)
atredis.clients.jedis.BinaryJedisCluster.set(BinaryJedisCluster.java:77)
atorg.springframework.data.redis.connection.jedis.JedisClusterConnection.set(JedisClusterConnection.java:618)
... 36more
Causedby:redis.clients.jedis.exceptions.JedisConnectionException:java.net.ConnectException:Connectionrefused:connect
atredis.clients.jedis.Connection.connect(Connection.java:207)
atredis.clients.jedis.BinaryClient.connect(BinaryClient.java:93)
atredis.clients.jedis.BinaryJedis.connect(BinaryJedis.java:1767)
atredis.clients.jedis.JedisFactory.makeObject(JedisFactory.java:106)
atorg.apache.commons.pool2.impl.GenericObjectPool.create(GenericObjectPool.java:868)
atorg.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:435)
atorg.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:363)
atredis.clients.util.Pool.getResource(Pool.java:49)
... 46more
Causedby:java.net.ConnectException:Connectionrefused:connect
atjava.net.DualStackPlainSocketImpl.waitForConnect(NativeMethod)
atjava.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
atjava.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
atjava.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
atjava.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
atjava.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
atjava.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
atjava.net.Socket.connect(Socket.java:589)
atredis.clients.jedis.Connection.connect(Connection.java:184)
... 53more
尝试往redis写数据的时候,报不能获取连接异常,跟踪了半天代码,发现连接的是127.0.0.1,而不是配置的192.168.1.8,这就奇怪了,继续跟踪代码发现是往redis服务器获取的返回的集群实例列表,真是坑!
源码:
redis.clients.jedis.Jedis#clusterSlots
@Override
public List clusterSlots() {
checkIsInMultiOrPipeline();
client.clusterSlots();
returnclient.getObjectMultiBulkReply();
}
就是这里获取返回的集群列表,返回的就是127.0.0.1,而不是配置的192.168.1.8。
最后修改各个集群节点的配置文件redis.conf,添加:
bind192.168.1.8
重启集群节点之后,读写正常。
(完)
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