安装Docker
1.防火墙
2.yum源
3.安装基础软件
更新yum源
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
yum clean all #清除yum源缓存
yum makecache #生成新缓存
iptables -F #清空规则
getenforce #disabled
yum install -y bash-completion vim lrzsz wget expect net-tools nc nmap tre dosZunix htop iftopiotop unzip telnet sl psmisc nethogs glances bc ntpdate openldap-devel
systemctl disable firewalld
systemctl stop firewalld
history #查看前面执行过的命令
uname -r
安装Docker
开启linux 内核的流量转发
cat < /etc/sysctl.d/docker.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.conf.default.rp_filter = 0
net.ipv4.ip_forward = 1
EOF
#加载修改内核的参数，配置文件
modprobe br_netfilter
sysctl -p /etc/sysctl.d/docker.conf
报错了
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-ip6tables: No such file or directory
sysctl: cannot stat /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory
net.ipv4.conf.default.rp_filter = 0
net.ipv4.ip_forward = 1
报错解决方法
modprobe br_netfilter
sysctl -p /etc/sysctl.d/docker.conf
使用yum 安装docker
查看yum 源里有没有 docker-ce 文件包
yum list docker-ce --showduplicates | sort -r
Error: No matching Packages to list
- updates: mirrors.aliyun.com
Loading mirror speeds from cached hostfile
Loaded plugins: fastestmirror, langpacks
- extras: mirrors.aliyun.com
- base: mirrors.aliyun.com
curl -o /etc/yum.repos.d/docker-ce.repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
curl -o /etc/yum.repos.d/Centos-7.repo http://mirrors.aliyun.com/repo/Centos-7.repo
更新YUM缓存
yum clean all && yum makecache
#可以直接yum安装docker了
#yum 安装
yum install docker-ce-20.10.6 -y
#查看源中可用版本
yum list docker-ce --showduplicates | sort -r
#如果要删除docker
yum remove -y docker-ce-20.10.6 # 版本号
#启动，使用docker
#配置docker加速器
mkdir -p /etc/docker
touch /etc/docker/daemon.json
vim /etc/docker/daemon.json
{
"registry-mirrors":[
"https://8xpk5wnt.mirror.aliyuncs.com"
]
}
#启动docker
systemctl daemon-reload
systemctl enable docker
#启动
systemctl restart docker
#验证是否启动成功
ps -ef | grep docker
docker ps #查看容器
docker images #查看镜像
root@VM-4-11-centos etc\]# docker version Client: Docker Engine - Community Version: 20.10.18 API version: 1.41 Go version: go1.18.6 Git commit: b40c2f6 Built: Thu Sep 8 23:14:08 2022 OS/Arch: linux/amd64 Context: default Experimental: true Server: Docker Engine - Community Engine: Version: 20.10.6 API version: 1.41 (minimum version 1.12) Go version: go1.13.15 Git commit: 8728dd2 Built: Fri Apr 9 22:43:57 2021 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.6.8 GitCommit: 9cd3357b7fd7218e4aec3eae239db1f68a5a6ec6 runc: Version: 1.1.4 GitCommit: v1.1.4-0-g5fd4c4d docker-init: Version: 0.19.0 GitCommit: de40ad0 －－－－－－－－－－－－－－－－－－－－－－－－－－ Nginx web 服务，运行一个80端口的网站 如果让你用docker运行nginx 该怎么玩 1.获取镜像，获取是从你配置好的docker镜像站中去拉nginx镜像 #先搜索一下，镜像文件是否在 docker search nginx #查看镜像 docker image ls REPOSITORY TAG IMAGE ID CREATED SIZE nginx latest 605c77e624dd 9 months ago 141MB #删除镜像 docker rmi 605c77e624dd #IMAGE ID的值 #拉取镜像 docker pull nginx docker pull redis Using default tag: latest latest: Pulling from library/nginx a2abf6c4d29d: Pull complete a9edb18cadd1: Pull complete 589b7251471a: Pull complete 186b1aaa4aa6: Pull complete b4df32aa5a72: Pull complete a0bcbecc962e: Pull complete Digest: sha256:0d17b565c37bcbd895e9d92315a05c1c3c9a29f762b011a10c54a66cd53c9b31 Status: Downloaded newer image for nginx:latest docker.io/library/nginx:latest #再次查镜像 docker image ls #运行nginx镜像 docker run 参数 镜像名字或ID #-d 后台运行容器 #-p 80:80 端口映射， 宿主机端口:容器内端口，你访问宿主机的这端口也就访问到了容器内的端口 docker run -d -p 80:80 nginx #docker run 命令会返回一个容器ID #查看容器是否在运行 docker ps #这时就可以访问测试一下 #此时可以访问宿主机的80端口，查到容器的80端口的应用是什么了 IP:80 #IP+端口在Google Chrome的地址栏里访问 #可以尝试停止容器 docker stop 容器ID docker stop 1a033aef64fe #启动容器 docker stater 窗口ID docker start 1a033aef64fe