centos7.5下一鍵簡單優化系統腳本
阿新 • • 發佈：2019-03-18
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#!/usr/bin/bash #替換yum源和epel源為阿裏雲，並安裝常用軟件 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo yum clean all && yum makecache && yum -y install wget vim lrzsz bash-completion dos2unix telnet tree net-tools namp sl nc psmisc ntpdate sysstat #關閉防火墻和selinux systemctl stop firewalld.service systemctl disable firewalld.service sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/g‘ /etc/selinux/config setenforce 0 #設置時間同步 echo "#time update by root" >>/var/spool/cron/root echo "*/5 * * * * /usr/sbin/ntpdate ntp1.aliyun.com &>/dev/null" >>/var/spool/cron/root #優化ssh鏈接(這裏沒有優化禁止root遠程登錄) cp /etc/ssh/sshd_config /etc/ssh/sshd_config.$(date +%F).bak sed -i ‘s/^GSSAPIAuthentication yes$/GSSAPIAuthentication no/‘ /etc/ssh/sshd_config sed -i ‘s/#UseDNS yes/UseDNS no/‘ /etc/ssh/sshd_config sed -i ‘s%#PermitEmptyPasswords no%PermitEmptyPasswords no%‘ /etc/ssh/sshd_config systemctl restart sshd.service #設置字符集為zh_CN.UTF-8 localectl set-locale LANG=zh_CN.UTF-8 source /etc/locale.conf #加大linux文件描述符 echo ‘* - nofile 65535‘ >>/etc/security/limits.conf #更改網卡名稱為eth0，配置主機IP地址和DNS(根據自己需求改一下地址即可) mv /etc/sysconfig/network-scripts/ifcfg-ens32 /etc/sysconfig/network-scripts/ifcfg-ens32.bak cat > /etc/sysconfig/network-scripts/ifcfg-eth0 << EOF TYPE=Ethernet BOOTPROTO=static DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no NAME=eth0 DEVICE=eth0 ONBOOT=yes PREFIX=24 IPV6_PEERDNS=yes IPV6_PEERROUTES=yes IPV6_PRIVACY=no IPADDR=10.0.0.7 GATEWAY=10.0.0.254 NETMASK=255.255.255.0 DNS1=202.96.128.86 DNS2=114.114.114.114 EOF #修改grub與網卡名稱一致 cp /etc/sysconfig/grub /etc/sysconfig/grub.bak sed -i ‘s/rhgb/& net.ifnames=0 biosdevname=0 /‘ /etc/sysconfig/grub grub2-mkconfig -o /boot/grub2/grub.cfg && systemctl restart network.service #以上是簡單優化，註意優化完成需要重啟一次系統網卡eth0才生效 reboot
centos7.5下一鍵簡單優化系統腳本