以下內容為個人最小化安裝後的配置步驟

更換yum源為阿里雲

yum install -y epel-release lrzsz wget
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
 

安裝一些基礎工具

yum install -y vim gcc gcc-c++ python3 python3-pip curl net-tools unzip sysstat tcpdump rsync supervisor iptables iotop yum-utils tree dos2unix

關閉NetworkManager

systemctl stop NetworkManager && systemctl disable NetworkManager

關閉selinux

setenforce 0
sed -i 's/^SELINUX=.*$/SELINUX=disabled/' /etc/selinux/config
 

系統引數調整

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
 

關閉swap

swapoff -a
sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab

關閉firewalld

systemctl stop firewalld.service && systemctl disable firewalld.service

設定ntp時間同步

yum install ntp -y
ntpdate asia.pool.ntp.org
cd /etc/
mv localtime localtime_bak
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
cd -

設定history時間戳

echo 'export HISTTIMEFORMAT="%F %T  `whoami` "' >> /etc/profile && source /etc/profile