Generating the xfs /etc/projects file

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1

I want to apply xfs projects in a server-specific way and need to setup the xfs /etc/projects file before I can use the community.general.xfs_quota module.

I have on each server an xfs mountpoint with a folder structure like this:

/mountpoint/projects/$PROJECTNAME/crashdumps

I want to create 1 shared XFS quota for all these folders with e.g. id 1000.

With a shell script this is easy enough:

pushd /;
for x in /mountpoint/projects/*/crashdumps; do
 echo 1000:$x;
done|sort > /etc/projects ;
popd

But can I do this with ansible, in a way that the task is only marked changed when the /etc/projects file is actually changed?

To be clear: Ansible should look at the existing folder structure. I prefer not to maintain a per server /etc/projects file or list of folders.

2

I found a solution. I can run the script inside an ansible shell task with changed_when: false, and dump the generated file in a variable. Then a copy with content:“{{variable}}” will either d nothing or modify the file and mark the script as changed.

3

You might consider taking the md5sum of the file at the start of the script, and again at the end. If they differ, then emit a unique testable string. Register the result, and mark the shell task changed_when: that string exists in your registered stdout.

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