修复Packer Provisions Shell Could not get lock /var/lib/dpkg/lock-frontend

# 修复Packer Provisions Shell Could not get lock /var/lib/dpkg/lock-frontend - open问题

## 问题背景

在使用packer打包镜像的时候, 需要安装ansible, 而安装ansible之前, 主要

```

apt update

```

燃鹅, packer报错说

```

amazon-ebs: E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)

amazon-ebs: E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

```

## 解决方案

Provision 加一步, 先 sleep 5分钟, 等系统开机时候的安全检查结束了, 便可成功

```

"provisioners": [

{

"type": "shell",

"inline": [

"sleep 300",

"sudo apt-get install -y ansible"

]

},

```

如果不确定需要多久, 可以用另外的方法, 可以缩减时间.

```

{

"type": "shell",

"inline": [

"while sudo lsof /var/lib/dpkg/lock-frontend ; do sleep 10; done;",

"sudo apt-get install -y ansible"

]

},

```

## 参考链接

[https://joelvasallo.com/?p=544](https://joelvasallo.com/?p=544)

[https://github.com/geerlingguy/packer-boxes/issues/7#issuecomment-358931370](https://github.com/geerlingguy/packer-boxes/issues/7#issuecomment-358931370)

## 原文链接

[https://www.wxhmf.com/posts/fix-packer-dpkg-lock/](https://www.wxhmf.com/posts/fix-packer-dpkg-lock/)