IDC机房

# 虚拟机常用配置

## 配置密码

```

apt install -y cloud-image-utils

cat > user-data <<'EOF'

#cloud-config

password: Admin@123456

chpasswd:

  expire: false

ssh_pwauth: true

EOF

cloud-localds seed.iso user-data

```

## 创建虚拟机

```

# 从cloud镜像创建磁盘

sudo qemu-img create -f qcow2 -F qcow2 -b /kvm/iso/noble-server-cloudimg-amd64.img /kvm/images/images1/image1vm.qcow2 200G

# 导入安装虚拟机

sudo virt-install \

--name=images1 \

--memory=8192 \

--vcpus=4 \

--cpu host \

--os-variant=ubuntu24.04 \

--disk path=/kvm/images/images1/image1vm.qcow2,format=qcow2,cache=none \

--disk path=/kvm/iso/seed.iso,device=cdrom \

--network network=default,model=virtio \

--graphics none \

--console pty,target_type=serial \

--noautoconsole \

--import

```

### console 登录虚拟机

```

virsh console images1

```

### 查看默认网关，dhcp网络

```

virsh net-dhcp-leases default

```

### 删除虚拟机

```

virsh shutdown images1

virsh destroy images1

virsh undefine images1

```

### 端口转发

```

# 将宿主机2222端口映射到虚拟机192.168.122.10的22端口

virsh net-update default add-port-forward ipv4 \

--source 0.0.0.0:2222 \

--dest 192.168.122.10:22 \

--live --config

# 删除端口转发：

virsh net-update default delete-port-forward ipv4 --source 0.0.0.0:2222 --dest 192.168.122.10:22 --live --config

```