packer demo

ks  应答文件demo

install
text
reboot
lang en_US.UTF-8
keyboard us
timezone --utc Etc/UTC
rootpw --plaintext 'kangwen12#$'
zerombr
autopart  --type=plain --fstype=ext4
bootloader --location=mbr
clearpart --all --initlabel 


%packages
@core
%end

%post --erroronfail
sed -i 's/PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config
sed -i 's/PasswordAuthentication.*/PasswordAuthentication yes/g' /etc/ssh/sshd_config
echo 'PermitRootLogin yes' >>  /etc/ssh/sshd_config
echo 'PasswordAuthentication yes'  >> /etc/ssh/sshd_config
%end

基于ISO 安装的一个 packer 配置文件

{
  "builders": [
    {
      "type": "qemu",
      "qemu_binary": "qemu-kvm",
      "iso_url": "/disk9/jinkangkang/CentOS-7-x86_64-Minimal-2009.iso",
      "iso_checksum": "md5:a4711c4fa6a1fb32bd555fae8d885b12",
      "output_directory": "tmpkw",
      "shutdown_command": "sudo -S shutdown -P now",
      "disk_size": "5000M",
      "format": "qcow2",
      "accelerator": "kvm",
      "http_directory": "ks",
      "ssh_username": "root",
      "ssh_password": "kangwen12#$",
      "ssh_timeout": "20m",
      "vm_name": "tdhtest",
      "net_device": "virtio-net",
      "disk_interface": "virtio",
      "boot_wait": "10s",
      "vnc_bind_address": "0.0.0.0",
      "boot_command": [
        "<tab> inst.text inst.ks=http://{{ .HTTPIP }}:{{ .HTTPPort }}/ks.cfg<enter><wait>"
      ],
      "qemuargs": [
        [
          "-display",
          "none"
        ]
      ]
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "scripts": [
        "/disk9/jinkangkang/kw/test.sh"
      ]
    }
  ]
}

 基与一个原有镜像构建的模板

{
  "builders": [
    {
      "type": "qemu",
      "qemu_binary": "qemu-kvm",
      "iso_url": "/disk9/jinkangkang/CentOS-7-x86_64-Minimal-2009.iso",
      "iso_checksum": "md5:a4711c4fa6a1fb32bd555fae8d885b12",
      "shutdown_command": "sudo -S shutdown -P now",
      "accelerator": "kvm",
      "http_directory": "ks",
      "ssh_username": "root",
      "ssh_password": "kangwen12#$",
      "ssh_timeout": "20m",
      "vm_name": "kw2",
      "net_device": "virtio-net",
      "disk_interface": "virtio",
      "boot_wait": "10s",
      "vnc_bind_address": "0.0.0.0",
      "qemuargs": [
        [
          "-display",
          "none"
        ],
        [ "-drive", "file=/disk9/jinkangkang/kw/kwbase.qcow2,if=none,id=drive-virtio-disk0,format=qcow2"
        ],
        [ "-device", "virtio-blk-pci,scsi=off,num-queues=1,x-data-plane=off,vectors=2,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1"
        ]
      ]
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "scripts": [
        "/disk9/jinkangkang/kw/test2.sh"
      ]
    }
  ]
}

上面的 /disk9/jinkangkang/kw/kwbase.qcow2 就是原有镜像，"ssh_password": "kangwen12#$", 是镜像的密码

构建命令：

sudo ./packer build packer.json

sudo PACKER_LOG=1 ./packer build packer.json  (日志更详细)