CentOS最小化安装-优化

1. yum -y install wget 
2. mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
3. cd /etc/yum.repos.d/
4. wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
5. yum clean all
6. yum makecache
7. 
   
8. yum -y install mailx mlocate lsof vim make gcc gcc-c++ unzip dos2unix openssh-clients dos2unix
9. 
   
10. #安装setup（可选）
11. yum install setuptool ntsysv system-config-firewall-tui system-config-network-tui
12. 
    
13. #关闭selinux
14. sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config
15. setenforce 0
16. 
    
17. #关闭IPV6(重启生效)
18. cat >> /etc/modprobe.conf <<EOF
19. alias net-pf-10 off
20. alias ipv6 off
21. EOF
22. 
    
23. #设置SSH
24. sed -i 's/^GSSAPIAuthentication yes$/GSSAPIAuthentication no/' /etc/ssh/sshd_config
25. sed -i 's/#UseDNS yes/UseDNS no/' /etc/ssh/sshd_config
26. service sshd restart
27. 
    
28. #set the file limit
29. echo "ulimit -SHn 102400" >> /etc/rc.local
30. cat >> /etc/security/limits.conf << EOF
31. *           soft   nofile       65535
32. *           hard   nofile       65535
33. EOF
34. 
    
35. #系统允许创建的最大进程数量
36. vim /etc/security/limits.d/90-nproc.conf
37. /etc/security/limits.d/90-nproc.conf
38. 修改
39. *  soft  nproc  4096