以下内容为个人最小化安装后的配置步骤
更换yum源为阿里云
yum install -y epel-release lrzsz wget yum-axelget mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup 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
安装一些基础工具
yum install -y vim gcc gcc-c++ python3 python3-pip curl net-tools unzip sysstat tcpdump rsync supervisor iptables iotop yum-utils yum-axelget tree dos2unix ntp fio mlocate lsof
关闭NetworkManager
systemctl stop NetworkManager && systemctl disable NetworkManager
关闭selinux
setenforce 0 sed -i 's/^SELINUX=.*$/SELINUX=disabled/' /etc/selinux/config
系统参数调整
cat >> /etc/sysctl.conf << EOF net.ipv4.ip_forward = 1 net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.core.somaxconn = 2048 net.ipv4.ip_local_port_range= 1024 65535 net.core.rmem_default = 262144 net.core.wmem_default = 262144 fs.file-max = 104857 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 4096 16777216 net.ipv4.tcp_wmem = 4096 4096 16777216 net.ipv4.tcp_mem = 786432 3145728 4194304 net.ipv4.tcp_max_syn_backlog = 16384 net.core.netdev_max_backlog = 20000 net.ipv4.tcp_fin_timeout = 15 net.ipv4.tcp_max_syn_backlog = 16384 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_max_orphans= 131072 EOF sysctl -p
关闭swap
swapoff -a sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
关闭firewalld
systemctl stop firewalld.service && systemctl disable firewalld.service
设定ntp时间同步
yum install ntp -y # 设置时区 timedatectl set-timezone Asia/Shanghai # 或 mv /etc/localtime /etc/localtime_bak cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime # 手动同步时间 ntpdate asia.pool.ntp.org # 修改/etc/ntp.conf，将原有的几个server注释，改为 server time1.cloud.tencent.com server time2.cloud.tencent.com server time3.cloud.tencent.com server time4.cloud.tencent.com server time5.cloud.tencent.com # 启动ntpd systemctl start ntpd systemctl enable ntpd
设置history时间戳
echo 'export HISTTIMEFORMAT="%F %T `whoami` "' >> /etc/profile && source /etc/profile
修改vimrc
vim /etc/vimrc- 追加以下内容
set smarttab set tabstop=4 set expandtab set softtabstop=4 set shiftwidth=4 set nobackup set noswapfile set encoding=utf-8 syntax on set hlsearch
增加最大文件数限制
cat >> /etc/security/limits.conf <<EOF * soft nofile 65535 * hard nofile 65535 EOF
