虚拟化与杂项速查笔记

KVM 虚拟化

创建与扩容磁盘

sudo qemu-img create -f qcow2 /var/lib/libvirt/images/ubuntu18.04.qcow2 10G
sudo qemu-img resize /var/lib/libvirt/images/ubuntu18.04.qcow2 +20G
sudo virsh start ubuntu18.04

网桥网络配置（Netplan）

network:
  version: 2
  ethernets:
    eno1:
      dhcp4: no
  bridges:
    br0:
      interfaces: [eno1]
      dhcp4: no
      addresses: [192.168.x.x/24]
      routes:
        - to: default
          via: 192.168.x.1

内网穿透 FRP

sudo vim /lib/systemd/system/frpc.service

[Unit]
Description=frpc
After=network.target
[Service]
ExecStart=/app/frpc/frpc -c /app/frpc/frpc.ini
Restart=always
KillMode=process
[Install]
WantedBy=multi-user.target

反向代理支持 WebSocket（如 JumpServer）

location / {
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_pass http://127.0.0.1:1881;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
}

Windows 常用技巧

# 系统文件修复
Dism /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-Image /RestoreHealth
sfc /SCANNOW

# 查看序列号
wmic bios get serialnumber

# 打开组策略
gpedit.msc

# 开机启动目录
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp

Chrome 实用插件

Adblock Plus、Tampermonkey（油猴）、Video Downloader Professional
油猴脚本站: greasyfork.org

以上内容整理自个人运维笔记，供快速查阅。