文档课题：Linux如何让Redis-server在后台运行.
系统：rhel 7.9
数据库：redis 6.2.6
1、问题描述
redis安装后运行reids-server命令，内容显示如下.此时在该session中无法执行其它操作，当执行ctrl+c关闭界面后才能输入其它命令，但此时redis进程也会被关闭.
[root@leo-redis626-a redis-6.2.6]# redis-server
56317:C 02 Apr 2023 23:13:12.679 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
56317:C 02 Apr 2023 23:13:12.679 # Redis version=6.2.6, bits=64, commit=00000000, modified=0, pid=56317, just started
56317:C 02 Apr 2023 23:13:12.679 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
56317:M 02 Apr 2023 23:13:12.681 * Increased maximum number of open files to 10032 (it was originally set to 1024).
56317:M 02 Apr 2023 23:13:12.681 * monotonic clock: POSIX clock_gettime
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 6.2.6 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in standalone mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 6379
| `-._ `._ / _.-' | PID: 56317
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | https://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
56317:M 02 Apr 2023 23:13:12.682 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
56317:M 02 Apr 2023 23:13:12.682 # Server initialized
56317:M 02 Apr 2023 23:13:12.682 # 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.
56317:M 02 Apr 2023 23:13:12.682 * Ready to accept connections
2、后台运行redis
如何在后台运行redis？本次测试是新建的配置文件，可在该文件中添加daemonize yes，如此以守护进程的方式启动redis.
[root@leo-redis626-a redis-6.2.6]# vi redis6379.conf
include /usr/local/src/redis-6.2.6/redis.conf
pidfile /var/run/redis_6379.pid
port 6379
dbfilename dump6379.rdb
daemonize yes
说明：“daemonize yes”为新增内容.
3、结果验证
--如下所示，此时启动redis，不再弹出一堆显示，同时可以在当前session进行其它操作.
[root@leo-redis626-a redis-6.2.6]# redis-server redis6379.conf
[root@leo-redis626-a redis-6.2.6]# ps -ef|grep redis
avahi 831 1 0 08:25 ? 00:00:00 avahi-daemon: running [leo-redis626-a.local]
root 2790 1 1 08:46 ? 00:00:00 redis-server 127.0.0.1:6379
root 2802 2308 0 08:46 pts/0 00:00:00 grep --color=auto redis
参考网址：https://jingyan.baidu.com/article/fc07f98931aa4953fee51948.html
