Redis安装及主从配置

　2012-07-18 19:36:33　来源：WEB开发网　　　

核心提示：当主结点宕掉时当主结点突然间不可用，两台从机会由于找不到主结点而报错，Redis安装及主从配置(4)，信息如下： [597] 26 Sep 18:46:09 * Connecting to MASTER... [597] 26

当主结点宕掉时

当主结点突然间不可用，两台从机会由于找不到主结点而报错，信息如下：

[597] 26 Sep 18:46:09 * Connecting to MASTER...

[597] 26 Sep 18:46:09 # Unable to connect to MASTER: Connection refused

[597] 26 Sep 18:46:10 * Connecting to MASTER...

[597] 26 Sep 18:46:10 # Unable to connect to MASTER: Connection refused

[597] 26 Sep 18:46:11 * Connecting to MASTER...

[597] 26 Sep 18:46:11 # Unable to connect to MASTER: Connection refused

[597] 26 Sep 18:46:12 * Connecting to MASTER...

[597] 26 Sep 18:46:12 # Unable to connect to MASTER: Connection refused

[597] 26 Sep 18:46:13 * Connecting to MASTER...

[597] 26 Sep 18:46:13 # Unable to connect to MASTER: Connection refused

[597] 26 Sep 18:46:14 - 0 clients connected (0 slaves), 790616 bytes in use

主结点在没有启动的情况下，从机先启动时

当主结点还没有启动时，从结点先启动，由于找不到对应主结点，会报如下的信息错误：

[Intranet root@xasc-150-208 /usr/alibaba/install/redis-2.2.12/src]

#./redis-server ../redis.conf

[1842] 26 Sep 18:48:50 * Server started, Redis version 2.2.12

[1842] 26 Sep 18:48:50 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.

[1842] 26 Sep 18:48:50 * DB loaded from disk: 0 seconds

[1842] 26 Sep 18:48:50 * The server is now ready to accept connections on port 6379

[1842] 26 Sep 18:48:50 - 0 clients connected (0 slaves), 790616 bytes in use

[1842] 26 Sep 18:48:50 * Connecting to MASTER...

[1842] 26 Sep 18:48:50 # Unable to connect to MASTER: Connection refused

[1842] 26 Sep 18:48:51 * Connecting to MASTER...

[1842] 26 Sep 18:48:51 # Unable to connect to MASTER: Connection refused

[1842] 26 Sep 18:48:52 * Connecting to MASTER...

[1842] 26 Sep 18:48:52 # Unable to connect to MASTER: Connection refused

[1842] 26 Sep 18:48:53 * Connecting to MASTER...

[1842] 26 Sep 18:48:53 # Unable to connect to MASTER: Connection refused

[1842] 26 Sep 18:48:54 * Connecting to MASTER...