命令总结4

基础优化：1、规范目录mkdir -p /server/toolsmkdir -p /server/scripts2、配置所有主机域名解析cat >/etc/hosts<>/etc/sudoerstail -1 /etc/sudoersvisudo -c6.设置系统中文UTF8字符集[root@oldboyedu ~]# cat /etc/locale.confLANG="en_US.UTF-8"修改命令如下：cp /etc/locale.conf  /etc/locale.conf.oriecho 'LANG="zh_CN.UTF-8"' >/etc/locale.conf source /etc/locale.confecho $LANGcp /etc/locale.conf  /etc/locale.conf.orilocalectl set-locale LANG="zh_CN.UTF-8"cat /etc/locale.conf7.基础优化操作项：时间同步设置# 设置系统时间同步yum install ntpdate -y/usr/sbin/ntpdate ntp3.aliyun.comecho '#crond-id-001:time sync by oldboy' >>/var/spool/cron/rootecho "*/5 * * * * /usr/sbin/ntpdate ntp3.aliyun.com >/dev/null 2>&1">>/var/spool/cron/rootcrontab -l8.基础优化操作项：提升命令行操作安全性（可选优化）# 提升命令行安全（可选配置）echo 'export TMOUT=300' >>/etc/profileecho 'export HISTSIZE=5' >>/etc/profileecho 'export HISTFILESIZE=5' >>/etc/profiletail -3 /etc/profile. /etc/profile9.基础优化操作项：加大文件描述符# 实例演示：加大文件描述echo '*              -      nofile          65535 ' >>/etc/security/limits.conftail -1 /etc/security/limits.confulimit -SHn  65535ulimit -n #<==命令方式查看配置结果10.基础优化操作项：优化系统内核cat >>/etc/sysctl.conf<