OpenEuler 20.03 LTS yum 安装redis后systemctl启动异常

前言通过命令yum install redis，安装redis后，通过systemctl启动报如下错误：[root@ecs-e505 ~]# systemctl start redisJob for redis.service failed because the control process exited with error code.See "systemctl status redis.

Alderaan

1559人浏览 · 2022-02-18 15:24:10

Alderaan · 2022-02-18 15:24:10 发布

前言

通过命令yum install redis，安装redis后，通过systemctl启动报如下错误：

[root@ecs-e505 ~]# systemctl start redis
Job for redis.service failed because the control process exited with error code.
See "systemctl status redis.service" and "journalctl -xe" for details.
[root@ecs-e505 ~]# systemctl status redis
● redis.service - Redis persistent key-value database
   Loaded: loaded (/usr/lib/systemd/system/redis.service; disabled; vendor pres>
   Active: failed (Result: exit-code) since Fri 2022-02-18 14:05:57 CST; 33s ago
  Process: 2945 ExecStart=/usr/bin/redis-server /etc/redis.conf --supervised sy>
 Main PID: 2945 (code=exited, status=217/USER)

2月 18 14:05:57 ecs-e505 systemd[1]: Starting Redis persistent key-value databa>
2月 18 14:05:57 ecs-e505 systemd[1]: redis.service: Main process exited, code=e>
2月 18 14:05:57 ecs-e505 systemd[1]: redis.service: Failed with result 'exit-co>
2月 18 14:05:57 ecs-e505 systemd[1]: Failed to start Redis persistent key-value>

/usr/lib/systemd/system/redis.service默认服务文件内容如下：

[Unit]
Description=Redis persistent key-value database
After=network.target

[Service]
ExecStart=/usr/bin/redis-server /etc/redis.conf --supervised systemd
Type=notify
User=redis
Group=redis
RuntimeDirectory=redis
RuntimeDirectoryMode=0755

[Install]
WantedBy=multi-user.target

可以看到，服务文件默认使用redis用户启动服务，使用的配置文件路径为/etc/redis.conf。配置文件redis.conf中有如下配置：

# The working directory.
#
# The DB will be written inside this directory, with the filename specified
# above using the 'dbfilename' configuration directive.
#
# The Append Only File will also be created inside this directory.
#
# Note that you must specify a directory here, not a file name.
dir /var/lib/redis

默认工作路径为/var/lib/redis。

解决办法

执行如下命令创建redis用户及运行环境

mkdir /var/lib/redis # 创建工作路径，默认没有这个文件夹
mkdir /var/log/redis # 创建日志路径，默认没有这个文件夹
groupadd redis #新增用户组
useradd -M redis -g redis -s /sbin/nologin  #新建用户redis并加入admin组中,并禁止登录
chown -R redis:redis /var/lib/redis # 修改工作路径拥有者
chown -R redis:redis /var/log/redis # 修改日志路径拥有者
chmod 644 /etc/redis.conf # 修改默认配置文件权限为644,默认为640

启动redis服务：

[root@ecs-e505 ~]# systemctl start redis # 启动成功
[root@ecs-e505 ~]# systemctl status redis # 查看运行状态
● redis.service - Redis persistent key-value database
   Loaded: loaded (/usr/lib/systemd/system/redis.service; disabled; vendor pres>
   Active: active (running) since Fri 2022-02-18 15:20:05 CST; 1min 52s ago
 Main PID: 3005 (redis-server)
    Tasks: 4
   Memory: 2.5M
   CGroup: /system.slice/redis.service
           └─3005 /usr/bin/redis-server 127.0.0.1:6379

2月 18 15:20:05 ecs-e505 systemd[1]: Starting Redis persistent key-value databa>
2月 18 15:20:05 ecs-e505 systemd[1]: Started Redis persistent key-value databas>