一、安装
- 默认安装
二、配置
- 配置网卡
BOOTPROTO=none ONBOOT=yes IPADDR=xxx.xxx.x.xx PREFIX=24 GATEWAY=xxx.xxx.x.x DNS1=xxx.xxx.x.x 注：删掉网卡内的UUID ，通用唯一识别码和HWADDR MAC地址 这两行。 所有网卡都需要删除
- 安装wget:yum -y install wget；
- 修改为阿里的yum源
1、cd /etc/yum.repos.d 2、备份 mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup 或 mv /etc/yum/repos.d/CentOS-Base.repo{,.date -I} 3、下载版本 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo 4、添加epel wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo 5、生成缓存 yum clean all yum makecache
- 下载常用工具
yum -y install wget net-tools screen lsof tcpdump nc mtr openssl-devel vim bash-completion lrzsz nmap telnet tree ntpdate bash-completion chrony vsftpd
提升效率：
yum -y install ncdu glances mosh rsync - 关闭selinux
sed -i.bak 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config
- 关闭防火墙
systemctl stop firewalld systemctl disable firewalld - 修改主机名
hostnamectl set-hostname 7mini
- 修改字符集
localectl status #查看当前字符集 # localectl set-locale LANG=zh_CN.UTF-8 #修改字符集为zh_CN.UTF-8，命令行和配置文件都生效 # cat /etc/locale.conf #查看配置文件 LANG=zh_CN.UTF-8
- 修改文件数限制
ulimit -n #默认大小 1024 echo "* soft nofile 65536" >> /etc/security/limits.conf #xi修改最大限制为65535 echo "* hard nofile 65536" >> /etc/security/limits.conf reboot #重启后生效
- 时间同步
ntpdate ntp1.aliyun.com cp /etc/chrony.conf{,.bak} vim /etc/chrony.conf server ntp6.aliyun.com iburst systemctl start chronyd systemctl enable chronyd #开机启动 systemctl restart chronyd chronyc sources #查看同步源 [root@7mini-node2 ~]# chronyc sources 210 Number of sources = 1 MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^* 203.107.6.88 2 6 17 31 +653us[+1965us] +/- 32ms 2)或者通过计划任务进行同步 [root@linux-node1 ~]# crontab -e no crontab for root - using an empty one crontab: installing new crontab [root@linux-node1 ~]# crontab -l */5 * * * * /usr/sbin/ntpdate time1.aliyun.com > /dev/null
- 可参考：https://www.cnblogs.com/jokerbj/p/9133093.html