配置、启动、关闭
Redis 启动方式有三种
启动 Redis
1. 默认配置启动
[root@bj-vmware-test1 redis]# redis-server
58421:C 22 Dec 09:03:33.479 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 3.0.7 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6379
| `-._ `._ / _.-' | PID: 58421
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
58421:M 22 Dec 09:03:33.492 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
58421:M 22 Dec 09:03:33.492 # Server started, Redis version 3.0.7
58421:M 22 Dec 09:03:33.492 # 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.
58421:M 22 Dec 09:03:33.494 * The server is now ready to accept connections on port 6379
2. 启动时配置参数
[root@bj-vmware-test1 redis]# redis-server --port 6380
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 3.0.7 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6380
| `-._ `._ / _.-' | PID: 58426
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
58426:M 22 Dec 09:04:44.284 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
58426:M 22 Dec 09:04:44.284 # Server started, Redis version 3.0.7
58426:M 22 Dec 09:04:44.284 # 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.
58426:M 22 Dec 09:04:44.285 * DB loaded from disk: 0.000 seconds
58426:M 22 Dec 09:04:44.285 * The server is now ready to accept connections on port 6380
3. 配置文件启动(推荐)
[root@bj-vmware-test1 redis]# redis-server /opt/redis/redis.conf
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 3.0.7 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6380
| `-._ `._ / _.-' | PID: 58435
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
58435:M 22 Dec 09:06:38.672 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
58435:M 22 Dec 09:06:38.672 # Server started, Redis version 3.0.7
58435:M 22 Dec 09:06:38.672 # 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.
58435:M 22 Dec 09:06:38.672 * DB loaded from disk: 0.000 seconds
58435:M 22 Dec 09:06:38.672 * The server is now ready to accept connections on port 6380
配置 Redis
redis.conf中很多配置，基础的几个配置
- port: Redis 监听端口，默认6379，生产中建议修改端口
- logfile: 日志文件，默认redis会输出到终端，如果以daemon运行，则输出到/dev/null
- dir: Redis工作目录(存放持久化文件、日志文件)，默认是当前目录，建议创建一个data目录
- daemonize: 是否后台运行，默认前台运行
修改后的配置
# egrep "^port|^logfile|^dir|^daemonize" redis.conf
daemonize yes
port 6379
logfile "redis.log"
dir ./data
关闭 Redis
大多数老哥好像都是kill，但可以通过redis-cli执行关闭
# redis-cli shutdown
查看日志可以看到，redis接收到关闭的请求后，首先把数据进行了一次刷盘，确认save到磁盘后，在进行关闭的，所以通过redis-cli shutdown相对更安全一点
[root@bj-vmware-test1 redis]# tail data/redis.log
...
58493:M 22 Dec 09:19:10.129 # User requested shutdown...
58493:M 22 Dec 09:19:10.129 * Saving the final RDB snapshot before exiting.
58493:M 22 Dec 09:19:10.143 * DB saved on disk
58493:M 22 Dec 09:19:10.143 * Removing the pid file.
58493:M 22 Dec 09:19:10.143 # Redis is now ready to exit, bye bye...