How to Pass Argument in Packer Provision Script?
I Am Struggling to Pass Input Parameter to Packer Provisioning Script. I Have Tried Various Options but No Joy. Objective Is My Provision. Sh Should Accept...
I am struggling to pass input parameter to packer provisioning script. I have tried various options but no joy.
Objective is my provision.sh should accept input parameter which I send during packer build.
packer build -var role=abc test.json
I am able to get the user variable in json file however I am unable to pass it provision script. I have to make a decision based on the input parameter.
I tried something like
"provisioners":
{
"type": "shell",
"scripts": [
"provision.sh {{user `role`}}"
]
}
But packer validation itself is failed with no such file/directory error message.
It would be real help if someone can help me on this.
Thanks in advance.
2 Answers
You should use the environment_vars option, see the docs Shell Provisioner - environment_vars.
Example:
"provisioners": [
{
"type": "shell"
"environment_vars": [
"HOSTNAME={{user `vm_name`}}",
"FOO=bar"
],
"scripts": [
"provision.sh"
],
}
]
If your script is already configured to use arguments; you simply need to run it as inline rather than in the scripts array.
In order to do this, the script must exist on the system already - you can accomplish this by copying it to the system with the file provisioner.
"provisioners": [
{
"type": "file",
"source": "scripts/provision.sh",
"destination": "/tmp/provision.sh"
},
{
"type": "shell",
"inline": [
"chmod u+x /tmp/provision.sh",
"/tmp/provision.sh {{user `vm_name`}}"]
}
]
Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.
