linux 集群

🧙 Questions

• hostname

☄️ Ideas

hostname

修改hostname

执行成功后,建议重新登录用户

sudo hostnamectl set-hostname isxcode

设置hostname配置

sudo vim /etc/sysconfig/network

HOSTNAME=isxcode

修改hosts域名映射

sudo vim /etc/hosts

# 建议注释掉内网ip那一行
# 建议使用内网映射

#172.26.34.192  iZ8vba7fpabuah6hxfi5m1Z iZ8vba7fpabuah6hxfi5m1Z
172.26.34.192  isxcode

集群时区同步

前提

• 关闭防火墙
• 关闭selinux
• 安装ntpd

修改ntpd配置

sudo systemctl start ntpd
sudo systemctl stop ntpd
sudo systemctl enable ntpd
sudo systemctl restart ntpd
sudo ntpq -p

sudo systemctl stop ntpd
sudo vim /etc/ntp.conf

# === sudo vim /etc/ntp.conf ===

restrict 127.0.0.1
restrict ::1

# 注释所有其他的sever，设置内网时区
server 127.127.1.0 iburst
fudge 127.127.1.0 stratum 3
# === sudo vim /etc/ntp.conf ===

sudo systemctl start ntpd
sudo systemctl enable ntpd

# 检查ntpd是否启动 ntpd默认端口号为123
sudo netstat -tunlp | grep 123
ntpq -np
timedatectl status

sudo systemctl status ntpd

手动同步时区

yum install ntp -y
# ln -fs /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
# echo "Asia/Shanghai" > /etc/timezone
# ntpdate -u ntp2.aliyun.com
vim /etc/ntp.conf

# server 0.centos.pool.ntp.org iburst
# server 1.centos.pool.ntp.org iburst
# server 2.centos.pool.ntp.org iburst
# server 3.centos.pool.ntp.org iburst
server ntp2.aliyun.com iburst
server ntp3.aliyun.com iburst
server ntp4.aliyun.com iburst

systemctl start ntpd
systemctl enable ntpd
systemctl status ntpd

免密认证

ssh
ssh-copy-id root@isxcode.com

🔗 Links

• linux website