Pomelo Lee workspace

1、yum install -y yum-utils
2、yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
3、yum install docker-ce

sudo yum remove docker docker-client docker-client-latest  docker-common   docker-latest   docker-latest-logrotate   docker-logrotate   docker-selinux   docker-engine-selinux  docker-engine

##安装基础依赖包
sudo yum install -y yum-utils device-mapper-persistent-data lvm2  
 
不建议// sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo ## 官方给出的源，国内比较慢，可以用阿里源替代
## 阿里源，国内速度优先
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo 
 
## 如果想安装指定版本的docker-ce，可以先用命令查看版本号
sudo yum list docker-ce --showduplicates | sort -r 
 
## 直接运行会默认安装最新版
sudo yum install docker-ce  
## 安装指定版本，例如：yum install docker-ce-20.10.11
sudo yum install docker-ce-<version STRING>  
 
###创建配置信息
sudo mkdir /etc/docker
 
sudo cat > /etc/docker/daemon.json <<eof 
{ 
  "exec-opts": ["native.cgroupdriver=systemd"], 
  "log-driver": "json-file",
  "log-opts": { 
    "max-size": "100m"
   },
  "storage-driver": "overlay2",
  "storage-opts": [ 
    "overlay2.override_kernel_check=true" 
  ] 
} 
EOF

curl -L https://github.com/docker/compose/releases/download/1.29.2/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose

 $ curl -sSL https://get.daocloud.io/docker | sh
 $ sudo systemctl start docker
 
 $ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-chrome:4.0.0-beta-1-prerelease-20201208
 
 //如果遭遇iptables nat 等失败 可以重新启动下docker再运行selenium chrome解决
 $ service iptables stop
 $ service iptables start
 $ sudo systemctl restart docker
 $ docker run -d -p 4444:4444 -v /dev/shm:/dev/shm selenium/standalone-chrome:4.0.0-beta-1-prerelease-20201208
 
 //仅仅是备用，无需安装
 $ docker pull openjdk:11

<dependency>
	<groupId>org.seleniumhq.selenium</groupId>
	<artifactId>selenium-java</artifactId>
</dependency>

 yum -y update 
 yum install passwd openssl openssh-server net-tools -y

	show variables like '%time_zone%';
 
	set global time_zone='Asia/Shanghai';
 
	set  time_zone='Asia/Shanghai';
 
	flush privileges;

	修改my.cnf
 
	default-time-zone ='Asia/Shanghai'