Centos 6 系統優化
1.系統安裝的包 最小化安裝時,自定義額外包組Base,Compatibility libraries,Debugging Tools,Development tools. 自定義額外包 tree nmap sysstat lrzsz dos2unix telnet
2.外網ip 10.0.0.6 nat模式 內外ip 172.16.0.6 lan段
3.yum源
[1]wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
[2]wget -O /etc/yum.repos.d/epel.repo
http://mirrors.aliyun.com/repo/epel-6.repo
4.關閉selinux和iptables
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config
/etc/init.d/iptables stop
5.ssh問題
vi /etc/ssh/sshd_config
PermitEmptyPasswords no
UseDNS no
GSSAPIAuthentication no
6.精簡開機系統服務
for zhangcun in `chkconfig --list|grep "3:
這條命令的意思是排除crond|network|rsyslog|sshd|sysstat這五個服務,其他的全部關閉
7.時間同步
/usr/sbin/ntpdate time.nuri.net
echo '#time sync by zhangcun at 2017-03-08' >> /var/spool/cron/root
echo '*/5 * * * * /usr/sbin/ntpdate time.nuri.net
8.字符集
cp /etc/sysconfig/i18n /etc/sysconfig/i18n.ori
echo 'LANG="zh_CN.UTF-8"' > /etc/sysconfig/i18n
source /etc/sysconfig/i18n
echo $LANG
9.文件描述符
echo '* - nofile 65535' >> /etc/security/limits.conf
Centos 6 系統優化