问题：Error response from daemon: Get "https://index.docker.io/v1/search?q=mysql&n=25": dial tcp 199.59.148.9:443: connect: connection refused
在pull nginx时出现的报错，可能原因是镜像源过期了，我们需要更换镜像源
vim /etc/docker/daemon.json
{"registry-mirrors": ["https://hub.atomgit.com/repos","https://docker.m.daocloud.io","https://dockerhub.timeweb.cloud"]
}常用命令
拉取镜像，查看镜像，删除镜像
[root@docker-test ~]# docker pull nginx
Using default tag: latest
latest: Pulling from library/nginx
bc0965b23a04: Pull complete
650ee30bbe5e: Pull complete
8cc1569e58f5: Pull complete
362f35df001b: Pull complete
13e320bf29cd: Pull complete
7b50399908e1: Pull complete
57b64962dd94: Pull complete
Digest: sha256:fb197595ebe76b9c0c14ab68159fd3c08bd067ec62300583543f0ebda353b5be
Status: Downloaded newer image for nginx:latest
docker.io/library/nginx:latest
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@docker-test ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest 66f8bdd3810c 3 weeks ago 192MB
[root@docker-test ~]# docker run --name=mynginx -d --restart=always -p 88:80 nginx
a55f9c7b4068d50c393f72356ee3fb7ff5a61be05dd3997f1695e851dee031ef
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a55f9c7b4068 nginx "/docker-entrypoint.…" 5 seconds ago Up 4 seconds 0.0.0.0:88->80/tcp, :::88->80/tcp mynginx
[root@docker-test ~]# docker rm -f mynginx
mynginx
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
启动容器
docker run [OPTIONS] IMAGE [COMMAND] [ARG...]【docker run 设置项 镜像名 】 镜像启动运行的命令（镜像里面默认有的，一般不会写）# -d：后台运行
# --restart=always: 开机自启
[root@docker-test ~]# docker run --name=mynginx -d --restart=always -p 88:80 nginx
0779cfa927b4489bd7aafe07cb3500f3933f80647b9e71cb8734c2c280edf32e
#任何ip访问我的88端口，都会转发到80
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
0779cfa927b4 nginx "/docker-entrypoint.…" 31 seconds ago Up 30 seconds 0.0.0.0:88->80/tcp, :::88->80/tcp mynginx#容器的启停
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
0779cfa927b4 nginx "/docker-entrypoint.…" 22 minutes ago Up 22 minutes 0.0.0.0:88->80/tcp, :::88->80/tcp mynginx
[root@docker-test ~]# docker stop mynginx
mynginx
[root@docker-test ~]# docker start mynginx
mynginx
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
0779cfa927b4 nginx "/docker-entrypoint.…" 22 minutes ago Up 1 second 0.0.0.0:88->80/tcp, :::88->80/tcp mynginx IP:88测试访问：
修改容器内容
修改默认的index.html 页面
1、进容器内部修改
# 进入容器内部的系统，修改容器内容
docker exec -it 容器id /bin/bash
[root@docker-test ~]# docker exec -it 0779cfa927b4 /bin/bash
root@0779cfa927b4:/#
root@0779cfa927b4:/#
root@0779cfa927b4:/#
root@0779cfa927b4:/# cd /usr/share/nginx/html/root@0779cfa927b4:/usr/share/nginx/html#
root@0779cfa927b4:/usr/share/nginx/html# ls
50x.html index.html
root@0779cfa927b4:/usr/share/nginx/html# echo "hello" > index.html
2、挂载数据到外部修改
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@docker-test ~]# docker run --name=mynginx -d --restart=always -p 88:80 -v /data/html:/usr/share/nginx/html:ro nginx
9cf3f15f63fa8004cc9ce2ce9c70a6d04790eb819c9565712b21ccc20e4622e4
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
9cf3f15f63fa nginx "/docker-entrypoint.…" 3 seconds ago Up 2 seconds 0.0.0.0:88->80/tcp, :::88->80/tcp mynginx
[root@docker-test ~]# cd /data/html
[root@docker-test html]# echo "11111" > index.html
[root@docker-test html]#
提交改变
将自己修改好的镜像提交，将自己已经修改完的镜像提交之后，在遇到镜像不能使用时，可以马上恢复
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
0779cfa927b4 nginx "/docker-entrypoint.…" 34 minutes ago Up 11 minutes 0.0.0.0:88->80/tcp, :::88->80/tcp mynginx
[root@docker-test ~]# docker commit -a "wangyuxuan" -m "首页变化" 0779cfa927b4 nginx:v1.0
sha256:bff0b7503eb050ecd07701a87272d238efb60256c402e461ccef4200769cf720
[root@docker-test ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx v1.0 bff0b7503eb0 6 seconds ago 192MB
nginx latest 66f8bdd3810c 3 weeks ago 192MB
[root@docker-test ~]# docker rm -f 66f8bdd3810c
Error response from daemon: No such container: 66f8bdd3810c
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
0779cfa927b4 nginx "/docker-entrypoint.…" 38 minutes ago Up 15 minutes 0.0.0.0:88->80/tcp, :::88->80/tcp mynginx
[root@docker-test ~]# docker rm -f 0779cfa927b4
0779cfa927b4
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@docker-test ~]# docker run --name=mynginx -d --restart=always -p 88:80 nginx
da77b3ad2b9e0da16a2cdc9f5e84e52737f29fe957c76f109e8cbc4a0ecd1c6d[root@docker-test ~]#
[root@docker-test ~]#
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
da77b3ad2b9e nginx "/docker-entrypoint.…" 4 seconds ago Up 2 seconds 0.0.0.0:88->80/tcp, :::88->80/tcp mynginx
[root@docker-test ~]# docker rm -f da77b3ad2b9e
da77b3ad2b9e
[root@docker-test ~]#
[root@docker-test ~]#
[root@docker-test ~]# docker run -d -p 88:80 nginx:v1.0
e60b18ed68720fee6b82838f62e9cca9403295240303d3b7aa5f623d1ad3f5af
[root@docker-test ~]#
[root@docker-test ~]#
[root@docker-test ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e60b18ed6872 nginx:v1.0 "/docker-entrypoint.…" 4 seconds ago Up 4 seconds 0.0.0.0:88->80/tcp, :::88->80/tcp kind_franklin
镜像保存
[root@docker-test ~]# docker save -o test1.tar nginx:v1.0
[root@docker-test ~]# ll
total 191360
-rw-------. 1 root root 1244 Dec 19 03:33 anaconda-ks.cfg
-rw-------. 1 root root 195947008 Dec 19 05:12 test1.tar
[root@docker-test ~]# docker load -i test1.tar
Loaded image: nginx:v1.0
补充
#查看容器日志
[root@docker-test html]# docker logs 9cf3f15f63fa
/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
/docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2024/12/19 10:22:44 [notice] 1#1: using the "epoll" event method
2024/12/19 10:22:44 [notice] 1#1: nginx/1.27.3
2024/12/19 10:22:44 [notice] 1#1: built by gcc 12.2.0 (Debian 12.2.0-14)
2024/12/19 10:22:44 [notice] 1#1: OS: Linux 3.10.0-1160.el7.x86_64
2024/12/19 10:22:44 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
2024/12/19 10:22:44 [notice] 1#1: start worker processes# docker 经常修改nginx配置文件
docker run -d -p 80:80 \
-v /data/html:/usr/share/nginx/html:ro \
-v /data/conf/nginx.conf:/etc/nginx/nginx.conf \
--name mynginx-02 \
nginx#把容器指定位置的东西复制出来
docker cp 5eff66eec7e1:/etc/nginx/nginx.conf /data/conf/nginx.conf
#把外面的内容复制到容器里面
docker cp /data/conf/nginx.conf 5eff66eec7e1:/etc/nginx/nginx.conf
