bind() 到 0.0.0.0:80 在 docker 上失敗（98：地址已在使用中）

Question

啟動容器后出現

2019/03/09 17:33:58 [emerg] 81#0: still could not bind()
2019/03/09 17:34:01 [emerg] 82#0: bind() to 0.0.0.0:80 failed (98: Address already in use)
2019/03/09 17:34:01 [emerg] 82#0: bind() to 0.0.0.0:80 failed (98: Address already in use)
2019/03/09 17:34:01 [emerg] 82#0: bind() to 0.0.0.0:80 failed (98: Address already in use)
2019/03/09 17:34:01 [emerg] 82#0: bind() to 0.0.0.0:80 failed (98: Address already in use)
2019/03/09 17:34:01 [emerg] 82#0: bind() to 0.0.0.0:80 failed (98: Address already in use)

Dockerfile 內容查看github地址

https://github.com/zhengxidong/docker/blob/master/lnp7.2_supervisord_dockerfile/Dockerfile

使用supervisord啟動多個服務。Nginx配置文件配置daemon off; 沒有出現錯誤日志，這是為什么？如果你把daemon off;去掉daemon off; , 無上述錯誤。

Answer 1

你已經運行了兩次 nginx：

UID        PID  PPID  C STIME TTY          TIME CMD
root         1     0  0 01:27 pts/0    00:00:00 /usr/bin/python /usr/bin/supervisord
root         9     1  0 01:27 pts/0    00:00:00 /usr/sbin/sshd -D
root        10     1  0 01:27 pts/0    00:00:00 php-fpm: master process (/usr/local/php/etc/php-fpm.conf)
root        11     1  0 01:27 pts/0    00:00:00 /usr/sbin/crond -n
root        12     1  0 01:27 ?        00:00:00 nginx: master process /usr/local/nginx/sbin/nginx <=============== Here
nginx       13    12  0 01:27 ?        00:00:00 nginx: worker process
nobody      14    10  0 01:27 pts/0    00:00:00 php-fpm: pool www
nobody      15    10  0 01:27 pts/0    00:00:00 php-fpm: pool www
root        68     0  0 01:29 pts/1    00:00:00 /bin/bash
root        84     1  0 01:29 pts/0    00:00:00 /usr/local/nginx/sbin/nginx <=== And Here
root        85    68  0 01:29 pts/1    00:00:00 ps -ef

第二個 nginx 無法運行，因為第一個已經運行。

NB

我建議您閱讀編寫 Dockerfile 的最佳實踐。 您的圖像在 10-15 分鍾內創建。

Answer 2

這意味着 nginx 或其他一些進程已經在使用端口 80。

您可以使用以下方法殺死它：

sudo fuser -k 80/tcp

然后再次嘗試重新啟動 nginx：

service nginx start

參考： https : //easyengine.io/tutorials/nginx/troubleshooting/emerg-bind-failed-98-address-already-in-use