CentOS基础环境设置

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工具安装

yum -y install wget vim ntp net-tools tree openssh

更换阿里源

mv /etc/yum.repos.d/CentOS-Base.repo{,.bak}
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

关闭selinux、firewalld

systemctl stop firewalld.service
systemctl disable firewalld.service
firewall-cmd --state
sed -i '/^SELINUX=.*/c SELINUX=disabled' /etc/selinux/config
sed -i 's/^SELINUXTYPE=.*/SELINUXTYPE=disabled/g' /etc/selinux/config
grep --color=auto '^SELINUX' /etc/selinux/config
setenforce 0

设置hostname

Host=controller.www.local
hostnamectl set-hostname $Host
# hostname $Host
# echo $Host>/etc/hostname

查看本机IP

ip add|sed -nr 's#^.*inet (.*)/24.*$#\1#gp'

时间同步

/usr/sbin/ntpdate ntp6.aliyun.com
echo "*/3 * * * * /usr/sbin/ntpdate ntp6.aliyun.com &> /dev/null" > /tmp/crontab
crontab /tmp/crontab

升级、重启

yum update -y && reboot

修改时区

timedatectl list-timezones # 列出所有时区，
timedatectl set-local-rtc 1 # 将硬件时钟调整为与本地时钟一致, 0 为设置为 UTC 时间
timedatectl set-timezone Asia/Shanghai # 设置系统时区为上海
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime # 系统底层修改时区