centos环境搭建

###############安装jdk############### 
1. yum -y list java* 
2. yum -y install java-1.8.0-openjdk-devel.x86_64

###############安装maven###############
1. 下载maven地址：http://maven.apache.org/download.cgi
2. 上传到虚拟机/usr/local目录下
3. 压缩包解压  tar -zxvf apache-maven-3.6.3-bin.tar.gz
4. 设置环境变量  vi /etc/profile 
5. 设置环境变量生效 source /etc/profile
6. mvn验证

###############安装docker###############
1. 下载 sudo yum-config-manager 
--add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
2. 测试 sudo yum-config-manager --enable docker-ce-test
3.更新缓存 sudo yum makecache fast
4. 安装docker sudo yum -y install docker-ce

5. 设置开机自启动 sudo systemctl enable docker & sudo systemctl start docker
6. 镜像加速 vi /etc/docker/daemon.json
    {
  "registry-mirrors": [
    "https://v72k5joc.mirror.aliyuncs.com"
  ],
  "insecure-registries": [],
  "debug": true,
  "experimental": false
}
7. 重启docker sudo systemctl restart docker

###############配置ip地址###############
1. 切换到目录 cd /etc/sysconfig/network-scripts
2. 编辑 vi  ifcfg-eth0
TYPE="Ethernet" 
PROXY_METHOD="none" 
BROWSER_ONLY="no" 
BOOTPROTO="static" #修改为静态IP
DEFROUTE="yes" 
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes" 
IPV6_AUTOCONF="yes" 
IPV6_DEFROUTE="yes" 
IPV6_FAILURE_FATAL="no" 
IPV6_ADDR_GEN_MODE="stable-privacy" 
NAME="eth0" 
UUID="1705211b-2d74-43e0-8959-9b1e414396dc" 
DEVICE="eth0" 
ONBOOT="yes" 
IPADDR="172.17.27.123" 
NETMASK="255.255.255.240" 
GATEWAY="172.17.27.113"
DNS1="223.6.6.6"  #设置DNS
DNS2="223.5.5.5"  #设置DNS