CentOS7虚拟机优化

CentOS7:

  1. 将网卡配置重点关注的地方为:linux

    [root@master ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens33 
    BOOTPROTO=static
    # UUID=ca1110e0-295f-4ca2-80ef-fc6b0ee6d4cd
    ONBOOT=yes
    IPADDR=192.168.225.151
    NETMASK=255.255.255.0
    GATEWAY=192.168.225.2
    DNS1=223.5.5.5
    DNS2=223.6.6.6
  2. yum源配置,阿里云的yum源(Base和epel)shell

    mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
    
    # Base源
    CentOS 6
    wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
    或者
    curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
    
    
    CentOS 7
    wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
    或者
    curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
    
    
    # epel源(若有配置其余epel源,则须要备份)
    mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup
    
    mv /etc/yum.repos.d/epel-testing.repo /etc/yum.repos.d/epel-testing.repo.backup
    
    
    wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
    
    
    
    # 最后
    yum clean all    # 清除缓存
    yum makecache    # 生成缓存
    yum repolist  # 验证是否成功
  3. 下载经常使用的软件:vim

    yum -y install bash-completion lrzsz sysstat net-tools tree wget vim -y
  4. 修改selinux和firewalld服务centos

    # selinux的位置: /etc/selinux/config
    sed -i s/SELINUX=enforcing/SELINUX=disabled/g /etc/selinux/config
    setenforce 0 # 临时关闭
    getenforce       # 查看状态
    
    
    # 关闭防火墙
    systemctl  status firewalld
    systemctl  stop firewalld
    systemctl  disable firewalld
    systemctl  status firewalld
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