Docker安装Nginx问题及错误分析

问题：

在Docker中装Nginx时遇到了如下错误：

docker: Error response from daemon: OCI runtime create failed: container_linux.go:345: starting container process caused “process_linux.go:424: container init caused “rootfs_linux.go:58: mounting \”/docker/nginx/conf\” to rootfs \"/var/lib/docker/overlay2/126c244dc6ee7095b1501a503eb361bade4fc255601ec0b0fe96238b58178958/merged\" at \"/var/lib/docker/overlay2/126c244dc6ee7095b1501a503eb361bade4fc255601ec0b0fe96238b58178958/merged/etc/nginx/nginx.conf\" caused \“not a directory\”"": unknown: Are you trying to mount a directory onto a file (or vice-versa)? Check if the specified host path exists and is the expected type.

我是安装了镜像后直接就去

docker run \ -p 80:80 \ --name nginx \ -d --restart=always \ -v /mydata/nginx/html:/usr/share/nginx/html \ -v /mydata/nginx/conf/nginx.conf:/etc/nginx/nginx.conf \ -v /mydata/nginx/logs:/var/log/nginx \ nginx

之后就出现了错误。

错误分析：

错误中我看的懂的地方说：尝试把目录装载到文件夹上，/nginx/nginx.conf\" caused \“not a directory\”",哒哒哒…什么的，这里我看了主机上的文件路径，发现本地创建的nginx.conf是个文件夹nginx.conf/，不是我想要的文件nginx.conf。

正确的操作方法：

mkdir -p /mydata/nginx/conf
touch /mydata/nginx/conf/nginx.conf

vim /mydata/nginx/conf/nginx.conf

在nginx.conf中写入官方初始的内容

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   /usr/share/nginx/html;
            index  index.html index.htm;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}

然后运行

docker run \
	-p 80:80  \
	--name nginx \
 	-d --restart=always \
 	-v /mydata/nginx/html:/usr/share/nginx/html \
 	-v /mydata/nginx/conf.d:/etc/nginx/conf.d \
 	-v /mydata/nginx/conf/nginx.conf:/etc/nginx/nginx.conf \
 	-v /mydata/nginx/logs:/var/log/nginx \
 	nginx

测试：

在本地/mydata/nginx/html/下放入一个index.html，

重启：docker restart nginx

访问http://localhost/

参考博客：

​ https://www.cnblogs.com/ivictor/p/4834864.html（对目录挂载的总结）

​ https://blog.csdn.net/qierkang/article/details/92657302

​ https://my.oschina.net/u/3375733/blog/1591091（如果需要加/conf.d/*.conf，可以看这篇博客）

​ https://blog.csdn.net/weixin_44757670/article/details/104993869（如果需要加/conf.d/*.conf，可以看这篇博客）

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