linux下安装redis---解决redis-cli不能正常使用
Linux中进入redis客户端，报链接超时
Could not connect to Redis at 127.0.0.1:6379: Connection timed out
Redis使用守护进程启动sentinel并指定其日志目录
正常redis-server可以通过配置文件来指定守护进程启动以及指定日志路径，但sentinel就不一样了。
正常启动redis的sentinel时，进程会直接在前台跑，一退出sentinel进程就关了：
[root@redis_01 redis]# redis-server /etc/redis/sentinel.conf --sentinel 7980:X 23 Nov 18:02:41.348 * Increased maximum number of open files to 10032 (it was originally set to 1024)._._ _.-``__ ''-._ _.-`` `. `_. ''-._ Redis 3.0.5 (00000000/0) 64 bit.-`` .-```. ```\/ _.,_ ''-._ ( ' , .-` | `, ) Running in sentinel mode|`-._`-...-` __...-.``-._|'` _.-'| Port: 26379| `-._ `._ / _.-' | PID: 7980`-._ `-._ `-./ _.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | http://redis.io `-._ `-._`-.__.-'_.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | `-._ `-._`-.__.-'_.-' _.-' `-._ `-.__.-' _.-' `-._ _.-' `-.__.-' 7980:X 23 Nov 18:02:41.355 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 7980:X 23 Nov 18:02:41.355 # Sentinel runid is 43de323d55627d896b2caf1da2e305f0eb59dcee 7980:X 23 Nov 18:02:41.356 # +monitor master mymaster 127.0.0.1 6379 quorum 1 ^C7980:signal-handler (1448273325) Received SIGINT scheduling shutdown... 7980:X 23 Nov 18:08:45.618 # User requested shutdown... 7980:X 23 Nov 18:08:45.618 # Sentinel is now ready to exit, bye bye... [root@redis_01 redis]# ll第一种方法：
使用nohub来启动sentinel，使得进程在后台启动以及在指定目录记录日志信息：
[root@redis_01 redis]# nohup /usr/local/redis/bin/redis-sentinel /etc/redis/sentinel.conf >> /var/log/redis_sentinel.log 2>&1 & [1] 8002 [root@redis_01 redis]# netstat -tunpl|grep sentinel tcp 0 0 0.0.0.0:26379 0.0.0.0:* LISTEN 8002/redis-sentinel tcp 0 0 :::26379 :::* LISTEN 8002/redis-sentinel [root@redis_01 redis]# tail -f /var/log/redis_sentinel.log 8002:X 23 Nov 18:25:52.043 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. 8002:X 23 Nov 18:25:52.043 # Sentinel runid is 7f1d63c2aede6ac97242aeaaba26d10778e28f0a 8002:X 23 Nov 18:25:52.043 # +monitor master mymaster 127.0.0.1 6379 quorum 1第二种方法：
在sentinel的配置文件中添加以下内容：
[root@redis_01 redis]# vim sentinel.conf
daemonize yes
logfile "/var/log/sentinel_log.log"[root@redis_01 redis]# redis-server /etc/redis/sentinel.conf --sentinel
[root@redis_01 redis]# cat /var/log/sentinel_log.log
11109:X 26 Nov 11:22:04.376 * Increased maximum number of open files to 10032 (it was originally set to 1024)._._ _.-``__ ''-._ _.-`` `. `_. ''-._ Redis 3.0.5 (00000000/0) 64 bit.-`` .-```. ```\/ _.,_ ''-._ ( ' , .-` | `, ) Running in sentinel mode|`-._`-...-` __...-.``-._|'` _.-'| Port: 26379| `-._ `._ / _.-' | PID: 11109`-._ `-._ `-./ _.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | http://redis.io `-._ `-._`-.__.-'_.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | `-._ `-._`-.__.-'_.-' _.-' `-._ `-.__.-' _.-' `-._ _.-' `-.__.-' 11109:X 26 Nov 11:22:04.379 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
11109:X 26 Nov 11:22:04.379 # Sentinel runid is 0f82780194cd3822ab32397b01996e205b4195c9
11109:X 26 Nov 11:22:04.379 # +monitor master mymaster 127.0.0.1 6379 quorum 1
[root@redis_01 redis]# ll
[root@redis_01 redis]# ps -ef|grep sentinel
root 11109 1 0 11:22 ? 00:00:00 redis-server *:26379 [sentinel]
root 11115 11076 0 11:22 pts/0 00:00:00 grep sentinel本人使用第二种，所以也推荐第二种方法。
转载自：http://www.suohi.cc/posts/5652e9401f6d1303e9f04a4d