By default the Google builder will wrap any provided startup script file
in order to track its execution via custom metadata. The wrapper script
can add a bit of complexity to the start script file so a new option is
being added `wrap_startup_script`. This option allows a user to disable
the script wrapping and just let GCE do its own thing when executing a
startup script.
It is simply the best/simplest solution and trying to prevent users from passing and integer here would be like opening a can of worms. Because:
* we cannot make mapstructure validate our duration string ( with an UnmarshalJSON func etc.)
* we cannot make mapstructure spit a string instead of a duration and packer will decode-encode-decode config.
* the hcl2 generated code asks for a string, so this will be enforced by default.
Before this commit it was possible to set a duration using an integer or a float. Go's time.Duration is an int64 internally an mapstructure will take advantage of this and load the number as a int64 but `1` means one ns which is unexpected/confusing. To avoid confusion and enforce readability this forces users to pass a string with a unit for a duration; ex "56s".
The ability to use a service account other than the default was
introduced in #5928. This change adds to that by introducing the
'disable_default_service_account' config option. If true - and
'service_account_email' is not set - Packer will create a GCE VM
with no service account.
- startup scripts don't run for Windows since it is isn't implemented yet.
- startup scripts use instance metadata instead of serial port output to flag when they are done.
- added licenses to Image data type (to check if an Image is a Windows Image).
- added GetImage and GetImageFromProject to googlecompute Drivers.
- changed some of the builder/googlecompute tests to use github.com/stretchr/testify/assert.
Tests:
- (in the Packer directory) `go test .`, `go test ./builder/googlecompute`, and `go test ./post-processor/googlecompute-export`
- manual run of `packer build packer_template.json` with the following files
--packer_template.json--
{
"builders": [
{
"type": "googlecompute",
"account_file": "creds.json",
"project_id": "google.com:packer-test",
"source_image": "debian-8-jessie-v20160629",
"zone": "us-central1-a",
"startup_script_file": "startup_script.sh",
"metadata": {
"startup-script": "#!/bin/sh\necho \"This should be overwritten.\"",
"startup-script-log-dest": "gs://packer-test.google.com.a.appspot.com/startup-script.log"
},
"image_name": "test-packer-modifications",
"ssh_username": "foo"
}
],
"post-processors": [
{
"type": "googlecompute-export",
"paths": [
"gs://packer-test.google.com.a.appspot.com/foo.tar.gz",
"gs://packer-test.google.com.a.appspot.com/bar.tar.gz"
],
"keep_input_artifact": true
}
]
}
--startup_script.sh--
\#!/bin/sh
echo "Hi, my name is Scott. I'm waiting 60 seconds!" >> /scott
sleep 60
echo "I'm done waiting!" >> /scott
Fixes the following vet reports:
builder/googlecompute/step_create_instance_test.go:42: possible formatting directive in Fatal call
builder/googlecompute/step_teardown_instance_test.go:29: possible formatting directive in Fatal call
builder/googlecompute/step_teardown_instance_test.go:39: possible formatting directive in Fatal call
Megan Marsh
Wilken Rivera
desolatorxxl
Adrien Delorme
Pratyush singhal
Evan Brown
Matthew Hooker
Peter Schultz
Lars Wander
Pieter Lazzaro
Scott Crunkleton
duftler
Emil Hessman
Mitchell Hashimoto