Linux相关文档

系统源优化

#系统软件源优化
bash <(curl -sSL https://linuxmirrors.cn/main.sh)

#防火墙
sudo ufw disable 
sudo ufw status

时间同步

#安装软件
apt install chrony -y

#修改时间同步服务器
vim /etc/chrony/chrony.conf
pool ntp.aliyun.com iburst maxsources 4

#重启服务
systemctl restart chrony.service && systemctl enable chrony.service && systemctl status chrony.service

#设置时区为中国
timedatectl set-timezone 'Asia/Shanghai'

文件句柄优化

系统句柄配置

echo "fs.file-max = 65535" > /etc/sysctl.conf

sysctl -p

cat > /etc/security/limits.conf  <<EOF
* hard nofile 65535
* soft nofile 65535
root hard nofile 65535
root soft nofile 65535
EOF

core文件设置

cat > /etc/systemd/system.conf  <<EOF
[Manager]
DefaultLimitCORE=infinity
DefaultLimitNOFILE=65535
DefaultLimitNPROC=65535
EOF

systemctl daemon-reexec

删除相关日志和缓存

#删除apt缓存
rm -rf /var/log/apt/*
rm -rf /var/log/dpkg.log
rm -rf /var/log/aptitude
rm -rf /var/lib/apt/lists/*

#关闭历史命令
sed -i 's/HISTSIZE=.*/HISTSIZE=1000/' ~/.bashrc
sed -i 's/HISTFILESIZE=.*/HISTFILESIZE=0/' ~/.bashrc