实验模板机制作以及配置常用软件和环境

  当前版本 

  [root@osker ~]# cat /etc/redhat-release 

  CentOS Linux release 7.6.1810 (Core) 

  [root@osker ~]# uname -a 

  Linux osker 3.10.0-957.el7.x86_64 #1 SMP Thu Nov 8 23:39:32 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux 

  配置阿里云yum仓库 

  rm -fr /etc/yum.repos.d/* 

  curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo 

  sed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo 

  curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo 

  安装常用软件 

  #参考软件： net-tools vim tree htop iftop iotop lrzsz sl wget unzip telnet nmap nc psmisc dos2unix bash-completion bash-completion-extras sysstat rsync nfs-utils httpd-tools 

  [root@osker ~]# yum install -y ntpdate wget vim tree lsof net-tools lrzsz nmap dos2unix nc telnet bash-completion bash-completion-extras ncurses-devel libaio-devel autoconf gcc-c++ gcc glibc cmake 

  关闭防火墙 

  systemctl stop firewalld 

  systemctl disable firewalld 

  systemctl status firewalld 

  关闭SELinux 

  setenfore 0 

  vim /etc/selinux/conf 

  SELINUX=disabled 

  优化ssh远程连接 

  vim /etc/ssh/sshd_config 

略

  配置hosts主机解析 

  vim /etc/hosts 

略

  添加定时时间同步 

  [root@osker ~]# crontab -e 

  #rsyn time from aliyun ntpdate 

  */5 * * * * /usr/sbin/ntpdate ntp1.aliyun.com &>/dev/null 

  扩大同时打开文件数量为65535 

  [root@osker ~]# echo '* - nofile 65535 ' >>/etc/security/limits.conf 

  [root@osker ~]# tail -1 /etc/security/limits.conf 

  * - nofile 65535 

  [root@osker ~]# source /etc/security/limits.conf 

  -bash: anaconda-ks.cfg: command not found 

  [root@osker ~]# reboot 

  [root@osker ~]# ulimit -a 

  core file size (blocks, -c) 0 

...

  open files (-n) 65535 

...

  修改字符集 

  [root@nfs ~]# localectl set-locale LANG="en_US.UTF-8" 

  [root@nfs ~]# echo $LANG 

  en_US.UTF-8 

  模板机配置完成，关机，添加快照。 

  使用链接克隆新机器，开机后修改主机名及IP 地址 

  修改主机名 

  [root@osker ~]# hostnamectl set-hostname backup 

 
 修改ip地址 

  [root@osker ~]# grep "100" /etc/sysconfig/network-scripts/ifcfg-ens3{3,7} 

  IPADDR=192.168.186.100 

  IPADDR=172.16.1.100 

  [root@osker ~]# sed -i 's#IPADDR=192.168.186.100#IPADDR=192.168.186.41#g' /etc/sysconfig/network-scripts/ifcfg-ens33 

  [root@osker ~]# sed -i 's#IPADDR=172.16.1.100#IPADDR=172.16.1.41#g' /etc/sysconfig/network-scripts/ifcfg-ens37 

  [root@osker ~]# sed -i '/UUID/d' /etc/sysconfig/network-scripts/ifcfg-ens3{3,7} 

  [root@osker ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33 

  TYPE=Ethernet 

  PROXY_METHOD=none 

  BROWSER_ONLY=no 

  BOOTPROTO=none 

  DEFROUTE=yes 

  IPV4_FAILURE_FATAL=no 

  IPV6INIT=yes 

  IPV6_AUTOCONF=yes 

  IPV6_DEFROUTE=yes 

  IPV6_FAILURE_FATAL=no 

  IPV6_ADDR_GEN_MODE=stable-privacy 

  NAME=ens33 

  DEVICE=ens33 

  ONBOOT=yes 

  IPADDR=192.168.186.41 

  PREFIX=24 

  GATEWAY=192.168.186.2 

  DNS1=223.5.5.5 

  DNS2=233.6.6.6 

  "/etc/sysconfig/network-scripts/ifcfg-ens33" 19L, 322C written 

  关机，做快照。 

  [root@osker ~]# poweroff 

实验模板机制作以及配置常用软件和环境

猜你喜欢