基本配置

Oracle Cloud的CentOS或Ubuntu自带系统，需要关闭防火墙和后台监管服务

注意关闭SELinux
setenforce 0
sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config

CentOS:

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systemctl stop oracle-cloud-agent
systemctl disable oracle-cloud-agent
systemctl stop oracle-cloud-agent-updater
systemctl disable oracle-cloud-agent-updater
systemctl stop firewalld.service
systemctl disable firewalld.service

Ubuntu:

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iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -F
apt-get purge netfilter-persistent -y

设置密码登录

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#!/bin/bash
echo root:you password |sudo chpasswd
sudo sed -i 's/PermitRootLogin no/PermitRootLogin yes/g' /etc/ssh/sshd_config;
sudo sed -i 's/PasswordAuthentication no/PasswordAuthentication yes/g' /etc/ssh/sshd_config;
sudo systemctl restart sshd