CentOS快速配置网络&&Docker快速部署

CentOS裸机Docker部署
Bug合集
- [ERROR [internal] load metadata for docker.io/library/java:8-alpine](#ERROR [internal] load metadata for docker.io/library/java:8-alpine)

CentOS裸机Docker部署

1.联通外网

vi /etc/sysconfig/network-scripts/ifcfg-ens33

systemctl restart network

ip addr

ping www.baidu.com

2.配置CentOS镜像源

参考文章

进入/etc/yum.repos.d目录下找到 CentOS-Base.repo

cd /etc/yum.repos.d

cp  CentOS-Base.repo   CentOS-Base.repo.backup
 
vi CentOS-Base.repo 

[base]
name=CentOS-$releasever - Base - Aliyun
baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
 
#released updates 
[updates]
name=CentOS-$releasever - Updates - Aliyun
baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
 
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - Aliyun
baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
 
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - Aliyun
baseurl=http://mirrors.aliyun.com/centos/$releasever/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

3.安装Docker

首先需要大家虚拟机联网，安装yum工具

yum install -y yum-utils \
           device-mapper-persistent-data \
           lvm2 --skip-broken

然后更新本地镜像源：

# 设置docker镜像源
yum-config-manager \
    --add-repo \
    https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
    
sed -i 's/download.docker.com/mirrors.aliyun.com\/docker-ce/g' /etc/yum.repos.d/docker-ce.repo

yum makecache fast

然后输入命令：

yum install -y docker-ce

docker-ce为社区免费版本。稍等片刻，docker即可安装成功。

4.启动Docker

Docker应用需要用到各种端口，逐一去修改防火墙设置。非常麻烦，因此建议大家直接关闭防火墙！

启动docker前，一定要关闭防火墙后！！

# 关闭
systemctl stop firewalld
# 禁止开机启动防火墙
systemctl disable firewalld

通过命令启动docker：

systemctl start docker  # 启动docker服务

systemctl stop docker  # 停止docker服务

systemctl restart docker  # 重启docker服务

通过命令启动docker：

docker -v

5.CentOS7安装DockerCompose

curl -L https://github.com/docker/compose/releases/download/1.23.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose

chmod +x docker-compose

chmod +x /usr/local/bin/docker-compose

绿了就成功了（这里记得检查一下大小，有时候装完大小为0，莫名其妙）

chmod +x /usr/local/bin/docker-compose

Base自动补全命令：

# 补全命令
curl -L https://raw.githubusercontent.com/docker/compose/1.29.1/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose

如果这里出现错误，需要修改自己的hosts文件：

echo "199.232.68.133 raw.githubusercontent.com" >> /etc/hosts

docker-compose version

安装成功

Bug合集

ERROR [internal] load metadata for docker.io/library/java:8-alpine

参考文章

Docker build镜像的时候报的错

应该是引入基础环境失败了，要换镜像源

vi /etc/docker/daemon.json

{
	"max-concurrent-downloads": 10,
     "max-concurrent-uploads": 5,
     "default-shm-size": "1G",
     "debug": true,
     "experimental": false,
     "registry-mirrors":[
                "https://x9r52uz5.mirror.aliyuncs.com",
                "https://dockerhub.icu",
                "https://docker.chenby.cn",
                "https://docker.1panel.live",
                "https://docker.awsl9527.cn",
                "https://docker.anyhub.us.kg",
                "https://dhub.kubesre.xyz"
        ],
  "insecure-registries": [
    "registry.me:5000",
    "http://docker.mirrors.ustc.edu.cn",
    "https://k8s.gcr.io",
    "https://github-releases.githubusercontent.com",
    "https://registry-1.docker.io",
    "decs.com"
  ],
  "exec-opts": [
    "native.cgroupdriver=systemd"
  ]

}

systemctl daemon-reload
systemctl restart docker

duocker build成功

docker build -t name:version .
docker images