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1.防火墙

a、查看防火墙状态：inactive是关闭，active是开启。
sudo ufw statusb、开启防火墙。
sudo ufw enablec、关闭防火墙。
sudo ufw disable

2.设置Ip

ifconfigsudo cp /etc/netplan/00-installer-config.yaml /etc/netplan/00-installer-config.yaml-bak#修改Ip
cat <<EOF | sudo tee /etc/netplan/00-installer-config.yaml
network:ethernets:ens160:addresses:- 192.16.2.11/24routes:- to: defaultvia: 192.16.2.1 ## gatewaynameservers:addresses:- 114.114.114.114- 8.8.8.8version: 2
EOF#更新Ip
sudo netplan apply

3.更新yum网络源

#备份
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup#阿里源
cat <<EOF | sudo tee /etc/apt/sources.list
deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
EOF#更新软件列表
sudo apt-get update -y# 更新本地软件
sudo apt-get upgrade -y

3.1本地yum源

## 创建挂载目录，挂载镜像源
sudo mkdir /mnt/cdrom
sudo mount /mnt/ubuntu-22.04.3-server-amd64.iso /mnt/cdrom/#备份
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup#使用本地源jammy 表示版本22
cat <<EOF | sudo tee /etc/apt/sources.list
deb file:///mnt/cdrom jammy main
EOF#清除原有记录
sudo apt-get clean all#更新软件列表
sudo apt-get update -y# 更新本地软件
sudo apt-get upgrade -y

4.安装ssh #启动ssh

sudo apt-get install openssh-server openssh-client net-tools ntpdate -y && sudo /etc/init.d/ssh restart

5.替换上海时区 #时间同步

sudo timedatectl set-timezone Asia/Shanghai  && sudo ntpdate time.windows.com

6.修改root用户密码,命令为：passwd root

#使用root账户，进行ssh登录

sed -i "s|#PermitRootLogin prohibit-password|PermitRootLogin yes|" /etc/ssh/sshd_config 
#重启ssh
sudo systemctl restart ssh

7.修改主机名

sudo hostnamectl set-hostname k8s-mast

8.定时任务同步时间

#查看任务
crontab -l#编辑任务
crontab -e#每小时同步一次时间
0 */1 * * * /usr/sbin/ntpdate 192.16.2.20#保存修改
Ctrl+o#退出
Ctrl+x

9.安装zabbix监控

#安装
apt install zabbix-agent#替换zabbix  配置文件ip192.16.2.25
sed -i "s|Server=127.0.0.1|Server=192.16.2.25|" /etc/zabbix/zabbix_agentd.conf
sed -i "s|ServerActive=127.0.0.1|ServerActive=192.16.2.25|" /etc/zabbix/zabbix_agentd.confsudo vi /etc/zabbix/zabbix_agentd.conf
#被动模式仅需修改Server、Hostname
Hostname=xxx01#启动zabbix
systemctl enable zabbix-agent
systemctl start zabbix-agent.service
systemctl status zabbix-agent.service