Install Docker

操作系统：CentOS 8.4 64位
Document

sudo yum install -y yum-utils
sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install docker-ce docker-ce-cli containerd.io
sudo systemctl start docker // Start Docker
systemctl status docker // View Docker Status
systemctl stop docker  // Stop Docker
systemctl restart docker // Restart Docker
systemctl enable docker // 设置Docker开机自启动

Install Java

操作系统：CentOS 8.4 64位

查看 Java 版本

yum list java*

安装 JDK

yum install java-1.8.0-openjdk-devel.x86_64

Config Java Path

vi /etc/profile

# /etc/profile
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.171-8.b10.el6_9.x86_64
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

# 使得配置文件生效
source /etc/profile

View Java Version

java -version

本地文件上传至服务器

scp  /path/filename  username@serverIp:/path

# Example
scp xxx.jar root@1.2.3.4:~/app

防火墙

# 查看状态
systemctl status firewalld 

# 启动防火墙
systemctl start firewalld

# 禁用防火墙
systemctl stop firewalld

# 设置开启启动
systemctl enable firewalld

# 停止并禁用开机启动
sytemctl disable firewalld

# 重启防火墙
firewall-cmd --reload

# 查看已经开放的端口
firewall-cmd --list-ports

# 开放端口
firewall-cmd --zone=public --add-port=3306/tcp --permanent