Docker + Nginx 安装

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

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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