重启nginx服务失败

想要重启nginx服务报错使用 netstat -lntup查看你的后台进程使用kill -9 干掉进程后再次重启重启失败再次查看后台进程错误原因

想要重启nginx服务报错

[root@localhost ~]# systemctl restart nginx

Job for nginx.service failed because the control process exited with error code. See "systemctl status nginx.service" and "journalctl -xe" for details.

查看详细信息如下

[root@localhost ~]# systemctl status nginx ● nginx.service - The nginx HTTP and reverse proxy server Loaded: loaded (/usr/lib/systemd/system/nginx.service; disabled; vendor preset: disabled) Active: failed (Result: exit-code) since 三 2020-10-21 11:09:28 CST; 14s ago Process: 4480 ExecStart=/usr/sbin/nginx (code=exited, status=1/FAILURE) Process: 4477 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=0/SUCCESS) Process: 4475 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS) 10月 21 11:09:27 localhost.localdomain nginx[4480]: nginx: [emerg] bind() to [::]:80 failed (98...e) 10月 21 11:09:27 localhost.localdomain nginx[4480]: nginx: [emerg] bind() to 0.0.0.0:80 failed ...e) 10月 21 11:09:27 localhost.localdomain nginx[4480]: nginx: [emerg] bind() to [::]:80 failed (98...e) 10月 21 11:09:28 localhost.localdomain nginx[4480]: nginx: [emerg] bind() to 0.0.0.0:80 failed ...e) 10月 21 11:09:28 localhost.localdomain nginx[4480]: nginx: [emerg] bind() to [::]:80 failed (98...e) 10月 21 11:09:28 localhost.localdomain systemd[1]: nginx.service: control process exited, code=...=1 10月 21 11:09:28 localhost.localdomain nginx[4480]: nginx: [emerg] still could not bind() 10月 21 11:09:28 localhost.localdomain systemd[1]: Failed to start The nginx HTTP and reverse p...r. 10月 21 11:09:28 localhost.localdomain systemd[1]: Unit nginx.service entered failed state. 10月 21 11:09:28 localhost.localdomain systemd[1]: nginx.service failed. Hint: Some lines were ellipsized, use -l to show in full.

使用 netstat -lntup查看你的后台进程

[root@localhost ~]# netstat -lntup Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1/systemd tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 4023/nginx: master tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1635/sshd tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1100/cupsd tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 3387/sshd: root@pts tcp6 0 0 :::111 :::* LISTEN 1/systemd tcp6 0 0 :::80 :::* LISTEN 4023/nginx: master tcp6 0 0 :::22 :::* LISTEN 1635/sshd tcp6 0 0 ::1:631 :::* LISTEN 1100/cupsd tcp6 0 0 ::1:6010 :::* LISTEN 3387/sshd: root@pts udp 0 0 0.0.0.0:60571 0.0.0.0:* 667/avahi-daemon: r udp 0 0 0.0.0.0:5353 0.0.0.0:* 667/avahi-daemon: r udp 0 0 0.0.0.0:36389 0.0.0.0:* 848/dhclient udp 0 0 0.0.0.0:24251 0.0.0.0:* 847/dhclient udp 0 0 0.0.0.0:68 0.0.0.0:* 848/dhclient udp 0 0 0.0.0.0:68 0.0.0.0:* 847/dhclient udp6 0 0 :::19987 :::* 848/dhclient udp6 0 0 :::36389 :::* 847/dhclient

使用kill -9 干掉进程后再次重启

kill -9 4023 [root@localhost ~]# systemctl restart nginx Job for nginx.service failed because the control process exited with error code. See "systemctl status nginx.service" and "journalctl -xe" for details.

重启失败再次查看后台进程

[root@localhost ~]# netstat -lntup Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1/systemd tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 4024/nginx: worker tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1635/sshd tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1100/cupsd tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 3387/sshd: root@pts tcp6 0 0 :::111 :::* LISTEN 1/systemd tcp6 0 0 :::80 :::* LISTEN 4024/nginx: worker tcp6 0 0 :::22 :::* LISTEN 1635/sshd tcp6 0 0 ::1:631 :::* LISTEN 1100/cupsd tcp6 0 0 ::1:6010 :::* LISTEN 3387/sshd: root@pts udp 0 0 0.0.0.0:60571 0.0.0.0:* 667/avahi-daemon: r udp 0 0 0.0.0.0:5353 0.0.0.0:* 667/avahi-daemon: r udp 0 0 0.0.0.0:36389 0.0.0.0:* 848/dhclient udp 0 0 0.0.0.0:24251 0.0.0.0:* 847/dhclient udp 0 0 0.0.0.0:68 0.0.0.0:* 848/dhclient udp 0 0 0.0.0.0:68 0.0.0.0:* 847/dhclient udp6 0 0 :::19987 :::* 848/dhclient udp6 0 0 :::36389 :::* 847/dhclient

进程还是存在不过对应的进程id+1了，也就是之前的nginx不存在但是又启动了一次所以进程id+1了

错误原因

此时的nginx服务，使用了nginx命令启动，而并非传统的systemctl工具执行，所以此时如果要停止nginx服务要使用nginx -s stop命令去执行，而不是systemctl stop nginx命令

[root@localhost ~]# nginx -s stop nginx: [error] open() "/run/nginx.pid" failed (2: No such file or directory)

这里使用nginx -s stop又发生一次报错，说/run/nginx.pid不存在，因为我们之前kill进程的时候改变了参数导致进程不知道指定的配置文件是谁？解决方法：nginx -c /etc/nginx/nginx.conf，再次指定配置文件

[root@localhost ~]# nginx -s stop //这个时候在停止服务就不会报错了

如果启动nginx服务是使用命令行模式启动的，用systemctl工具是关闭不了的，但是使用systemctl工具启动的，nginx命令行是可以关闭的，也就是nginx命令行的优先级高于systemctl工具的优先级，为了以后的方便管理建议使用nginx命令行模式来管理nginx服务。