docker笔记记录 - 常用命令
环境查看
# 系统内核3.10以上
[root@VM-0-2-centos ~]# uname -r
3.10.0-1127.19.1.el7.x86_64
查看系统版本
# 系统版本
[root@VM-0-2-centos ~]# cat /etc/os-release
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"
卸载旧版本
yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
需要的安装包
yum install -y yum-utils
设置镜像仓库
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
更新源
[root@VM-0-2-centos ~]# yum makecache fast
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
epel | 4.7 kB 00:00
extras | 2.9 kB 00:00
os | 3.6 kB 00:00
updates | 2.9 kB 00:00
元数据缓存已建立
安装docker相当的包
[root@VM-0-2-centos ~]# yum install docker-ce docker-ce-cli containerd.io
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
没有可用软件包 docker-ce。
没有可用软件包 docker-ce-cli。
没有可用软件包 containerd.io。
错误：无须任何处理
[root@VM-0-2-centos ~]# ls
frp0341
[root@VM-0-2-centos ~]# yum-config-manager \
> --add-repo \
> https://download.docker.com/linux/centos/docker-ce.repo
已加载插件：fastestmirror, langpacks
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
[root@VM-0-2-centos ~]# yum install docker-ce docker-ce-cli containerd.io
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
docker-ce-stable | 3.5 kB 00:00
(1/2): docker-ce-stable/7/x86_64/primary_db | 58 kB 00:00
(2/2): docker-ce-stable/7/x86_64/updateinfo | 55 B 00:00
正在解决依赖关系
--> 正在检查事务
---> 软件包 containerd.io.x86_64.0.1.4.4-3.1.el7 将被 安装
--> 正在处理依赖关系 container-selinux >= 2:2.74，它被软件包 containerd.io-1.4.4-3.1.el7.x86_64 需要
---> 软件包 docker-ce.x86_64.3.20.10.5-3.el7 将被 安装
--> 正在处理依赖关系 docker-ce-rootless-extras，它被软件包 3:docker-ce-20.10.5-3.el7.x86_64 需要
--> 正在处理依赖关系 libcgroup，它被软件包 3:docker-ce-20.10.5-3.el7.x86_64 需要
---> 软件包 docker-ce-cli.x86_64.1.20.10.5-3.el7 将被 安装
--> 正在检查事务
---> 软件包 container-selinux.noarch.2.2.119.2-1.911c772.el7_8 将被 安装
--> 正在处理依赖关系 policycoreutils-python，它被软件包 2:container-selinux-2.119.2-1.911c772.el7_8.noarch 需要
---> 软件包 docker-ce-rootless-extras.x86_64.0.20.10.5-3.el7 将被 安装
--> 正在处理依赖关系 fuse-overlayfs >= 0.7，它被软件包 docker-ce-rootless-extras-20.10.5-3.el7.x86_64 需要
--> 正在处理依赖关系 slirp4netns >= 0.4，它被软件包 docker-ce-rootless-extras-20.10.5-3.el7.x86_64 需要
---> 软件包 libcgroup.x86_64.0.0.41-21.el7 将被 安装
--> 正在检查事务
---> 软件包 fuse-overlayfs.x86_64.0.0.7.2-6.el7_8 将被 安装
--> 正在处理依赖关系 libfuse3.so.3(FUSE_3.2)(64bit)，它被软件包 fuse-overlayfs-0.7.2-6.el7_8.x86_64 需要
--> 正在处理依赖关系 libfuse3.so.3(FUSE_3.0)(64bit)，它被软件包 fuse-overlayfs-0.7.2-6.el7_8.x86_64 需要
--> 正在处理依赖关系 libfuse3.so.3()(64bit)，它被软件包 fuse-overlayfs-0.7.2-6.el7_8.x86_64 需要
---> 软件包 policycoreutils-python.x86_64.0.2.5-34.el7 将被 安装
--> 正在处理依赖关系 setools-libs >= 3.3.8-4，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
--> 正在处理依赖关系 libsemanage-python >= 2.5-14，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
--> 正在处理依赖关系 audit-libs-python >= 2.1.3-4，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
--> 正在处理依赖关系 python-IPy，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
--> 正在处理依赖关系 libqpol.so.1(VERS_1.4)(64bit)，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
--> 正在处理依赖关系 libqpol.so.1(VERS_1.2)(64bit)，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
--> 正在处理依赖关系 libapol.so.4(VERS_4.0)(64bit)，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
--> 正在处理依赖关系 checkpolicy，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
--> 正在处理依赖关系 libqpol.so.1()(64bit)，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
--> 正在处理依赖关系 libapol.so.4()(64bit)，它被软件包 policycoreutils-python-2.5-34.el7.x86_64 需要
---> 软件包 slirp4netns.x86_64.0.0.4.3-4.el7_8 将被 安装
--> 正在检查事务
---> 软件包 audit-libs-python.x86_64.0.2.8.5-4.el7 将被 安装
---> 软件包 checkpolicy.x86_64.0.2.5-8.el7 将被 安装
---> 软件包 fuse3-libs.x86_64.0.3.6.1-4.el7 将被 安装
---> 软件包 libsemanage-python.x86_64.0.2.5-14.el7 将被 安装
---> 软件包 python-IPy.noarch.0.0.75-6.el7 将被 安装
---> 软件包 setools-libs.x86_64.0.3.3.8-4.el7 将被 安装
--> 解决依赖关系完成
依赖关系解决
================================================================================
Package 架构 版本 源 大小
================================================================================
正在安装:
containerd.io x86_64 1.4.4-3.1.el7 docker-ce-stable 33 M
docker-ce x86_64 3:20.10.5-3.el7 docker-ce-stable 27 M
docker-ce-cli x86_64 1:20.10.5-3.el7 docker-ce-stable 33 M
为依赖而安装:
audit-libs-python x86_64 2.8.5-4.el7 os 76 k
checkpolicy x86_64 2.5-8.el7 os 295 k
container-selinux noarch 2:2.119.2-1.911c772.el7_8 extras 40 k
docker-ce-rootless-extras
x86_64 20.10.5-3.el7 docker-ce-stable 9.1 M
fuse-overlayfs x86_64 0.7.2-6.el7_8 extras 54 k
fuse3-libs x86_64 3.6.1-4.el7 extras 82 k
libcgroup x86_64 0.41-21.el7 os 66 k
libsemanage-python x86_64 2.5-14.el7 os 113 k
policycoreutils-python x86_64 2.5-34.el7 os 457 k
python-IPy noarch 0.75-6.el7 os 32 k
setools-libs x86_64 3.3.8-4.el7 os 620 k
slirp4netns x86_64 0.4.3-4.el7_8 extras 81 k
事务概要
================================================================================
安装 3 软件包 (+12 依赖软件包)
总下载量：104 M
安装大小：430 M
Is this ok [y/d/N]: y
Downloading packages:
(1/15): container-selinux-2.119.2-1.911c772.el7_8.noarch.r | 40 kB 00:00
(2/15): audit-libs-python-2.8.5-4.el7.x86_64.rpm | 76 kB 00:00
(3/15): checkpolicy-2.5-8.el7.x86_64.rpm | 295 kB 00:00
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-20.10.5-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
docker-ce-20.10.5-3.el7.x86_64.rpm 的公钥尚未安装
(4/15): docker-ce-20.10.5-3.el7.x86_64.rpm | 27 MB 02:41
(5/15): containerd.io-1.4.4-3.1.el7.x86_64.rpm | 33 MB 03:45
(6/15): fuse-overlayfs-0.7.2-6.el7_8.x86_64.rpm | 54 kB 00:00
(7/15): fuse3-libs-3.6.1-4.el7.x86_64.rpm | 82 kB 00:00
(8/15): libcgroup-0.41-21.el7.x86_64.rpm | 66 kB 00:00
(9/15): libsemanage-python-2.5-14.el7.x86_64.rpm | 113 kB 00:00
(10/15): python-IPy-0.75-6.el7.noarch.rpm | 32 kB 00:00
(11/15): policycoreutils-python-2.5-34.el7.x86_64.rpm | 457 kB 00:00
(12/15): slirp4netns-0.4.3-4.el7_8.x86_64.rpm | 81 kB 00:00
(13/15): setools-libs-3.3.8-4.el7.x86_64.rpm | 620 kB 00:00
(14/15): docker-ce-rootless-extras-20.10.5-3.el7.x86_64.rp | 9.1 MB 00:44
(15/15): docker-ce-cli-20.10.5-3.el7.x86_64.rpm | 33 MB 00:05:11
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
总计 225 kB/s | 104 MB 00:07:53
从 https://download.docker.com/linux/centos/gpg 检索密钥
导入 GPG key 0x621E9F35:
用户ID : "Docker Release (CE rpm) "
指纹 : 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35
来自 : https://download.docker.com/linux/centos/gpg
是否继续？[y/N]：y
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
正在安装 : libcgroup-0.41-21.el7.x86_64 1/15
正在安装 : setools-libs-3.3.8-4.el7.x86_64 2/15
正在安装 : audit-libs-python-2.8.5-4.el7.x86_64 3/15
正在安装 : python-IPy-0.75-6.el7.noarch 4/15
正在安装 : slirp4netns-0.4.3-4.el7_8.x86_64 5/15
正在安装 : libsemanage-python-2.5-14.el7.x86_64 6/15
正在安装 : fuse3-libs-3.6.1-4.el7.x86_64 7/15
正在安装 : fuse-overlayfs-0.7.2-6.el7_8.x86_64 8/15
正在安装 : checkpolicy-2.5-8.el7.x86_64 9/15
正在安装 : policycoreutils-python-2.5-34.el7.x86_64 10/15
正在安装 : 2:container-selinux-2.119.2-1.911c772.el7_8.noarch 11/15
setsebool: SELinux is disabled.
正在安装 : containerd.io-1.4.4-3.1.el7.x86_64 12/15
正在安装 : 1:docker-ce-cli-20.10.5-3.el7.x86_64 13/15
正在安装 : docker-ce-rootless-extras-20.10.5-3.el7.x86_64 14/15
正在安装 : 3:docker-ce-20.10.5-3.el7.x86_64 15/15
验证中 : 1:docker-ce-cli-20.10.5-3.el7.x86_64 1/15
验证中 : checkpolicy-2.5-8.el7.x86_64 2/15
验证中 : fuse3-libs-3.6.1-4.el7.x86_64 3/15
验证中 : fuse-overlayfs-0.7.2-6.el7_8.x86_64 4/15
验证中 : libsemanage-python-2.5-14.el7.x86_64 5/15
验证中 : slirp4netns-0.4.3-4.el7_8.x86_64 6/15
验证中 : 2:container-selinux-2.119.2-1.911c772.el7_8.noarch 7/15
验证中 : python-IPy-0.75-6.el7.noarch 8/15
验证中 : 3:docker-ce-20.10.5-3.el7.x86_64 9/15
验证中 : docker-ce-rootless-extras-20.10.5-3.el7.x86_64 10/15
验证中 : policycoreutils-python-2.5-34.el7.x86_64 11/15
验证中 : containerd.io-1.4.4-3.1.el7.x86_64 12/15
验证中 : audit-libs-python-2.8.5-4.el7.x86_64 13/15
验证中 : setools-libs-3.3.8-4.el7.x86_64 14/15
验证中 : libcgroup-0.41-21.el7.x86_64 15/15
已安装:
containerd.io.x86_64 0:1.4.4-3.1.el7 docker-ce.x86_64 3:20.10.5-3.el7 docker-ce-cli.x86_64 1:20.10.5-3.el7
作为依赖被安装:
audit-libs-python.x86_64 0:2.8.5-4.el7 checkpolicy.x86_64 0:2.5-8.el7 container-selinux.noarch 2:2.119.2-1.911c772.el7_8
docker-ce-rootless-extras.x86_64 0:20.10.5-3.el7 fuse-overlayfs.x86_64 0:0.7.2-6.el7_8 fuse3-libs.x86_64 0:3.6.1-4.el7
libcgroup.x86_64 0:0.41-21.el7 libsemanage-python.x86_64 0:2.5-14.el7 policycoreutils-python.x86_64 0:2.5-34.el7
python-IPy.noarch 0:0.75-6.el7 setools-libs.x86_64 0:3.3.8-4.el7 slirp4netns.x86_64 0:0.4.3-4.el7_8
完毕！
[root@VM-0-2-centos ~]#
安装docker-compose
sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
启动docker 查看版本
[root@VM-0-2-centos ~]# systemctl start docker
[root@VM-0-2-centos ~]# docker version
Client: Docker Engine - Community
Version: 20.10.5
API version: 1.41
Go version: go1.13.15
Git commit: 55c4c88
Built: Tue Mar 2 20:33:55 2021
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.5
API version: 1.41 (minimum version 1.12)
Go version: go1.13.15
Git commit: 363e9a8
Built: Tue Mar 2 20:32:17 2021
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.4.4
GitCommit: 05f951a3781f4f2c1911b05e61c160e9c30eaa8e
runc:
Version: 1.0.0-rc93
GitCommit: 12644e614e25b05da6fd08a38ffa0cfe1903fdec
docker-init:
Version: 0.19.0
GitCommit: de40ad0
[root@VM-0-2-centos ~]#
Hello World
[root@VM-0-2-centos ~]# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
b8dfde127a29: Pull complete
Digest: sha256:308866a43596e83578c7dfa15e27a73011bdd402185a84c5cd7f32a88b501a24
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
查看下载的镜像
[root@VM-0-2-centos ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest d1165f221234 2 weeks ago 13.3kB
卸载docker
sudo yum remove docker-ce docker-ce-cli containerd.io
sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd
腾讯云 更换docker源
vim /etc/docker/daemon.json
# 输入以下内容,保存.
{
"registry-mirrors": [
"https://mirror.ccs.tencentyun.com"
]
}
# 重启docker
sudo systemctl restart docker
docker常用命令
docker version #显示docker版本信息
docker info #显示docker系统信息,包括镜像和容器信息
docker 命令 --help #显示命令的帮助文档
镜像命令
docker images 查看本地主机上的所有镜像
[root@VM-0-2-centos docker]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest d1165f221234 2 weeks ago 13.3kB
[root@VM-0-2-centos docker]# docker images --help
Usage: docker images [OPTIONS] [REPOSITORY[:TAG]]
List images
Options:
-a, --all Show all images (default hides intermediate images)
--digests Show digests
-f, --filter filter Filter output based on conditions provided
--format string Pretty-print images using a Go template
--no-trunc Don't truncate output
-q, --quiet Only show image IDs
docker search 搜索镜像
[root@VM-0-2-centos docker]# docker search mysql
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
mysql MySQL is a widely used, open-source relation… 10634 [OK]
mariadb MariaDB Server is a high performing open sou… 3990 [OK]
[root@VM-0-2-centos docker]# docker search --help
Usage: docker search [OPTIONS] TERM
Search the Docker Hub for images
Options:
-f, --filter filter Filter output based on conditions provided
--format string Pretty-print search using a Go template
--limit int Max number of search results (default 25)
--no-trunc Don't truncate output
[root@VM-0-2-centos docker]# docker search mysql --filter=STARS=5000
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
mysql MySQL is a widely used, open-source relation… 10634 [OK]
doker pull下载镜像
[root@VM-0-2-centos ~]# docker pull mysql
Using default tag: latest
latest: Pulling from library/mysql
6f28985ad184: Pull complete
e7cd18945cf6: Pull complete
ee91068b9313: Pull complete
b4efa1a4f93b: Pull complete
f220edfa5893: Pull complete
74a27d3460f8: Pull complete
2e11e23b7542: Pull complete
fbce32c99761: Pull complete
08545fb3966f: Extracting 19.5MB/113.1MB
5b9c076841dc: Download complete
ef8b369352ae: Download complete
ebd210f0917d: Download complete
docker rmi 删除镜像
docker rmi -f 容器id #删除指定容器
docker rmi -f 容器id 容器id 容器id #删除多个容器
docker rmi -f $(docker images -aq) #删除所有容器
[root@VM-0-2-centos ~]# docker rmi -f d1165f221234
Untagged: hello-world:latest
Untagged: hello-world@sha256:308866a43596e83578c7dfa15e27a73011bdd402185a84c5cd7f32a88b501a24
Deleted: sha256:d1165f2212346b2bab48cb01c1e39ee8ad1be46b87873d9ca7a4e434980a7726
容器命令
下载拉取镜像
docker pull centos
新建容器并启动
docker run [可选参数] image
# 参数说明
--name="Name" #容器名字 tomcat01 tomcat02 ,用来区分容器
-d #后台方式运行
-it 使用交互方式运行,进入容器查看内容
-p 指定容器的端口 -p 8080:8080
-p ip:主机端口:容器端口
-p 主机端口:容器端口 (常用)
-p 容器端口
容器端口
-P 随机指定端口
[root@VM-0-2-centos ~]# docker run -it centos /bin/bash
[root@053419c0d190 /]# ls
bin etc lib lost+found mnt proc run srv tmp var
dev home lib64 media opt root sbin sys usr
[root@053419c0d190 /]# exit
exit
列出所有运行的容器
docker ps
# 列出当前正在运行的容器
-a #列出所有容器
-n=? #显示最近创建的容器
-q #只显示容器的编号
[root@VM-0-2-centos ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@VM-0-2-centos ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
053419c0d190 centos "/bin/bash" 2 minutes ago Exited (0) About a minute ago nervous_hugle
d659369cd7c3 d1165f221234 "/hello" About an hour ago Exited (0) About an hour ago zen_stonebraker
[root@VM-0-2-centos ~]#
退出容器
exit #直接容器停止并退出
Ctrl+P+Q #容器不停止退出
[root@VM-0-2-centos ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@VM-0-2-centos ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
centos latest 300e315adb2f 3 months ago 209MB
[root@VM-0-2-centos ~]# docker run -it centos
[root@e3958c4d528d /]# [root@VM-0-2-centos ~]# #Ctrl+p+q退出
[root@VM-0-2-centos ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
e3958c4d528d centos "/bin/bash" 19 seconds ago Up 18 seconds thirsty_solomon
[root@VM-0-2-centos ~]#
删除容器
docker rm 容器id #删除指定容器
docker rm -f $(docker ps -aq) #删除所有容器
docker rm -a -q|xargs docker rm # 删除所有容器
启动和停止容器的操作
docker start 容器id #启动容器
docker restart 容器id
docker stop 容器id
docker kill 容器id #强制停止容器
其它 常用命令
后台启动容器
# docker run -d 镜像名
[root@VM-0-2-centos ~]# docker run -d centos
62c46ea2a37054800034585cdc73f4f9e0f980aa8cb3cbaa5c4beca8bb81a365
[root@VM-0-2-centos ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[root@VM-0-2-centos ~]#
# 常见的坑,docker后台运行,必须要有一个前台进程
# nginx,容器启动后,没提供服务,就会立刻停止
查看日志
docker logs -tf --tail num 容器id
-tf #实时显示日志
--tail num #显示日志条数
查看容器中的进程信息
top 命令
[root@VM-0-2-centos ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
af1c7b12dd98 centos "/bin/bash" 38 seconds ago Up 38 seconds affectionate_lehmann
[root@VM-0-2-centos ~]# docker top af1c7b12dd98
UID PID PPID C STIME TTY TIME CMD
root 16746 16726 0 20:58 pts/0 00:00:00 /bin/bash
查看容器信息
docker inspect 容器ID
docker inspect af1c7a12dd098
进入当前正在运行的容器
# 容器经常后台运行,如何进入正在运行的容器呢
# 命令
# docker exec -it 容器id bashshell
[root@VM-0-2-centos ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
af1c7b12dd98 centos "/bin/bash" 5 minutes ago Up 5 minutes affectionate_lehmann
[root@VM-0-2-centos ~]# docker exec -it af1c7b12dd98 /bin/bash
[root@af1c7b12dd98 /]# ls
bin etc lib lost+found mnt proc run srv tmp var
dev home lib64 media opt root sbin sys usr
[root@af1c7b12dd98 /]#
# 方式二
# docker attach 容器ID
[root@VM-0-2-centos ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
af1c7b12dd98 centos "/bin/bash" 10 minutes ago Up 10 minutes affectionate_lehmann
[root@VM-0-2-centos ~]# docker attach af1c7b12dd98
[root@af1c7b12dd98 /]# ls
bin etc lib lost+found mnt proc run srv tmp var
dev home lib64 media opt root sbin sys usr
[root@af1c7b12dd98 /]#
# docker exec #进入新开终端
# docker attach #进入容器运行正在执行的终端,不会新开终端
从容器内拷贝文件到主机
docker cp 容器id:容器内路径 目的主机路径
# 示例
[root@VM-0-2-centos ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
af1c7b12dd98 centos "/bin/bash" 17 minutes ago Up 17 minutes affectionate_lehmann
[root@VM-0-2-centos ~]# docker attach af1c7b12dd98
[root@af1c7b12dd98 /]# ls
bin etc lib lost+found mnt proc run srv tmp var
dev home lib64 media opt root sbin sys usr
[root@af1c7b12dd98 /]# touch /home/ceshi.txt
# Ctrl+p+q 退出容器
[root@VM-0-2-centos ~]# docker cp af1c7b12dd98:/home/ceshi.txt /usr #拷贝到主机usr目录
[root@VM-0-2-centos ~]# cd /usr #进入主机usr目录
[root@VM-0-2-centos usr]# ls
bin ceshi.txt etc games include lib lib64 libexec local sbin share src tmp
yum 安装报错
错误：软件包：docker-ce-rootless-extras-20.10.3-3.el7.x86_64 (docker-ce-stable)
需要：slirp4netns >= 0.4
错误：软件包：3:docker-ce-20.10.3-3.el7.x86_64 (docker-ce-stable)
需要：container-selinux >= 2:2.74
错误：软件包：containerd.io-1.4.3-3.1.el7.x86_64 (docker-ce-stable)
需要：container-selinux >= 2:2.74
错误：软件包：docker-ce-rootless-extras-20.10.3-3.el7.x86_64 (docker-ce-stable)
需要：fuse-overlayfs >= 0.7
您可以尝试添加 --skip-broken 选项来解决该问题
您可以尝试执行：rpm -Va --nofiles --nodigest
解决办法:
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum install epel-release -y
yum install container-selinux -y #安装最新的contain-selinux