配置nginx的service服务，快捷启动nginx

1）在编辑nginx服务之前先关闭nginx。

使用命令查看nginx启动进程ID。

[root@localhost ~]# ps -ef |grep nginx
root      10759      1  0 15:05 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www       10760  10759  0 15:05 ?        00:00:00 nginx: worker process
www       10761  10759  0 15:05 ?        00:00:00 nginx: worker process
www       10762  10759  0 15:05 ?        00:00:00 nginx: worker process
www       10763  10759  0 15:05 ?        00:00:00 nginx: worker process
root      10985  10332  0 15:17 pts/0    00:00:00 grep --color=auto nginx

nginx的进程ID是10759，使用kill命令关闭nginx,并再次查看进程是否已关闭。

[root@localhost ~]# kill 10759
[root@localhost ~]#
[root@localhost ~]# ps -ef |grep nginx
root      11203  10332  0 15:35 pts/0    00:00:00 grep --color=auto nginx
[root@localhost ~]#

2）编辑nginx服务

默认情况下，所有程序的服务都存在/lib/systemd/system/下，所以我们也在此目录下创建nginx的服务文件nginx.service。

vim /lib/systemd/system/nginx.service

[Unit]
Description=nginx
After=network.target


[Service]
Type=forking
ExecStart=/usr/local/nginx/sbin/nginx
ExecReload=/usr/local/nginx/sbin/nginx -s reload
ExecStop=/usr/local/nginx/sbin/nginx -s stop
PrivateTmp=true

[Install]
WantedBy=multi-user.target

3）重新加载服务

编辑好服务文件后，需要重新载入才能生效。

[root@localhost ~]# systemctl daemon-reload
[root@localhost ~]#

4）测试启动服务

[root@localhost ~]# systemctl daemon-reload
[root@localhost ~]# systemctl start nginx
[root@localhost ~]# ps -ef |grep nginx
root      11334      1  0 15:44 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www       11335  11334  0 15:44 ?        00:00:00 nginx: worker process
www       11336  11334  0 15:44 ?        00:00:00 nginx: worker process
www       11337  11334  0 15:44 ?        00:00:00 nginx: worker process
www       11338  11334  0 15:44 ?        00:00:00 nginx: worker process
root      11342  10332  0 15:44 pts/0    00:00:00 grep --color=auto nginx
[root@localhost ~]#

5）测试停止服务

[root@localhost ~]# systemctl stop nginx
[root@localhost ~]# ps -ef |grep nginx
root      11385  10332  0 15:47 pts/0    00:00:00 grep --color=auto nginx
[root@localhost ~]#

6）测试重启服务

重启服务的测试，主要是通过nginx两次运行的ID来分辨，每次启动的ID均不同。
开始启动后ID是11412，重启后变成11443，说明重启成功。

[root@localhost ~]# systemctl start nginx
[root@localhost ~]# ps -ef |grep nginx
root      11412      1  0 15:49 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www       11413  11412  0 15:49 ?        00:00:00 nginx: worker process
www       11414  11412  0 15:49 ?        00:00:00 nginx: worker process
www       11415  11412  0 15:49 ?        00:00:00 nginx: worker process
www       11416  11412  0 15:49 ?        00:00:00 nginx: worker process
root      11421  10332  0 15:49 pts/0    00:00:00 grep --color=auto nginx
[root@localhost ~]# systemctl restart nginx
[root@localhost ~]# ps -ef |grep nginx
root      11443      1  0 15:50 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www       11444  11443  0 15:50 ?        00:00:00 nginx: worker process
www       11445  11443  0 15:50 ?        00:00:00 nginx: worker process
www       11446  11443  0 15:50 ?        00:00:00 nginx: worker process
www       11447  11443  0 15:50 ?        00:00:00 nginx: worker process
root      11467  10332  0 15:50 pts/0    00:00:00 grep --color=auto nginx
[root@localhost ~]#

##7）设置开机启动

[root@localhost ~]# systemctl enable nginx.service
[root@localhost ~]#

8）重启系统，测试nginx是否启动

查看进程，nginx成功启动。

Last login: Fri Jul 28 14:37:38 2023 from 192.168.88.134
[root@localhost ~]# ps -ef |grep nginx
root      11443      1  0 15:50 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx
www       11444  11443  0 15:50 ?        00:00:00 nginx: worker process
www       11445  11443  0 15:50 ?        00:00:00 nginx: worker process
www       11446  11443  0 15:50 ?        00:00:00 nginx: worker process
www       11447  11443  0 15:50 ?        00:00:00 nginx: worker process
root      11638  11573  0 15:55 pts/1    00:00:00 grep --color=auto nginx
[root@localhost ~]#