Linux内核优化脚本

#!/bin/bash

# 创建内核参数优化配置文件
cat <<EOF > /etc/sysctl.d/99-kernel-optimization.conf

# 启用IP转发

net.ipv4.ip_forward = 1

net.ipv6.conf.all.forwarding = 1

# TCP内存分配优化

net.core.wmem_max = 16777216

net.core.rmem_max = 16777216

net.ipv4.tcp_rmem = 4096 87380 16777216

net.ipv4.tcp_wmem = 4096 65536 16777216

# TCP连接跟踪优化

net.netfilter.nf_conntrack_max = 1000000

net.netfilter.nf_conntrack_tcp_timeout_established = 1200

# 启用TCP Fast Open

net.ipv4.tcp_fastopen = 3

# 调整TCP Keepalive设置 net.ipv4.tcp_keepalive_time = 1200

net.ipv4.tcp_keepalive_probes = 5

net.ipv4.tcp_keepalive_intvl = 15

# 禁用ICMP重定向

net.ipv4.conf.all.accept_redirects = 0

net.ipv4.conf.default.accept_redirects = 0

#禁用TCP慢启动

net.ipv4.tcp_slow_start_after_idle = 0

#开启TCP连接复用

net.ipv4.tcp_tw_reuse = 1

#提高系统文件描述符限制

fs.file-max = 100000

#调整内核参数以适应高并发场景

net.core.somaxconn = 65535

net.core.netdev_max_backlog = 65535

net.ipv4.tcp_max_syn_backlog = 65535

net.ipv4.tcp_syncookies = 1

#优化TCP性能

net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_tw_recycle = 0

net.ipv4.tcp_fin_timeout = 30

net.ipv4.tcp_keepalive_time = 1200

net.ipv4.tcp_keepalive_probes = 5

net.ipv4.tcp_keepalive_intvl = 15

net.ipv4.tcp_rmem = 4096 87380 16777216

net.ipv4.tcp_wmem = 4096 65536 16777216

#优化UDP性能

net.ipv4.udp_rmem_min = 8192

net.ipv4.udp_wmem_min = 8192

#开启反向路径过滤

net.ipv4.conf.all.rp_filter = 1

net.ipv4.conf.default.rp_filter = 1

#防止网络攻击

net.ipv4.tcp_syncookies = 1

net.ipv4.tcp_max_syn_backlog = 20480

# 防止ICMP Flood攻击

net.ipv4.icmp_echo_ignore_broadcasts = 1

net.ipv4.icmp_ignore_bogus_error_responses = 1

net.ipv4.icmp_ratelimit = 1000

# 防止SYN Flood攻击

net.ipv4.tcp_syncookies = 1

net.ipv4.tcp_synack_retries = 2

net.ipv4.tcp_syn_retries = 5

# 调整TIME-WAIT套接字重用等待时间

net.ipv4.tcp_fin_timeout = 30

EOF

# 应用内核参数优化配置
sysctl –system

echo “Kernel optimization completed. Please reboot the system for all changes to take effect.”

 

将此脚本保存为kernel_optimization.sh,然后使用root权限运行它:

chmod +x kernel_optimization.sh
sudo ./kernel_optimization.sh
暂无评论

发送评论 编辑评论


|´・ω・)ノ
ヾ(≧∇≦*)ゝ
(☆ω☆)
(╯‵□′)╯︵┴─┴
 ̄﹃ ̄
(/ω\)
∠( ᐛ 」∠)_
(๑•̀ㅁ•́ฅ)
→_→
୧(๑•̀⌄•́๑)૭
٩(ˊᗜˋ*)و
(ノ°ο°)ノ
(´இ皿இ`)
⌇●﹏●⌇
(ฅ´ω`ฅ)
(╯°A°)╯︵○○○
φ( ̄∇ ̄o)
ヾ(´・ ・`。)ノ"
( ง ᵒ̌皿ᵒ̌)ง⁼³₌₃
(ó﹏ò。)
Σ(っ °Д °;)っ
( ,,´・ω・)ノ"(´っω・`。)
╮(╯▽╰)╭
o(*////▽////*)q
>﹏<
( ๑´•ω•) "(ㆆᴗㆆ)
😂
😀
😅
😊
🙂
🙃
😌
😍
😘
😜
😝
😏
😒
🙄
😳
😡
😔
😫
😱
😭
💩
👻
🙌
🖕
👍
👫
👬
👭
🌚
🌝
🙈
💊
😶
🙏
🍦
🍉
😣
Source: github.com/k4yt3x/flowerhd
颜文字
Emoji
小恐龙
花!
上一篇
下一篇