Allow modern puppetserver pregenerated ca certs to be imported.

[johannagnarsson]

Use Case

Following the process to import generated certs only works if migrating from a legacy puppet ca since all the certs live in /etc/puppetlabs/puppet/ssl/ca/. New puppetserver ca cert location is /etc/puppetlabs/puppetserver/ca with /etc/puppetlabs/puppet/ssl/ca being a symlink to the new location.

The reason it works for the legacy ca is because of this: https://github.com/voxpupuli/container-puppetserver/blob/a84fc0c23e936febb184f9b5c94c2a194be78dd5/puppetserver/docker-entrypoint.d/90-ca.sh#L70

if you tar up /etc/puppetlabs/puppet/ssl/ on a "new style" puppetserver ca, it will either only include the ca symlink, or dereference it and include the ca folder with all it's contents, but that will cause the referenced script to fail:
Running /docker-entrypoint.d/90-ca.sh Error: Existing file at '/etc/puppetlabs/puppetserver/ca' Migration will not overwrite the directory at /etc/puppetlabs/puppetserver/ca. Have you already run this migration tool? Is this a puppet 7 installation? It is likely that you have already successfully run the migration or do not need to run it.
This means that it is impossible to import modern ca via the helm chart.

Describe the Solution You Would Like

Adding another configuration option to import puppetserver ca style certs. This seems to the most straight forward solution and should be able to be implemented without breaking any existing functionality.

Describe Alternatives You've Considered

Possible alternatives to this solution could be:

1. Account for this somehow in the puppet-preinstall.job template, potentially trying to figure out if the ca directory is legacy or modern and move it/create symlinks if it is modern, if it's legacy the puppetserver container will handle the migration.
2. Account for this in the puppetserver container, but it feels more like it should be handled in the helm chart, since it is directly related.
3. Account for this in a custom docker entrypoint, but this will not work because the container will never reach them because the 90-ca.sh script will fail and exit the container before the custom entrypoints have a chance to finish running.
4. Fix by hand by mounting both ca and puppet PVC's and migrating the ca directory manually.
5. Fix puppetserver ca migrate to detect when modern ca structure exists and fix up the directories. This solution again doesn't seem appropriate for the scope of this.

Additional Context

Would love any other alternative solutions!

[Xtigyro]

@johannagnarsson Thanks for the bug report!

If you find a way to enhance this, please feel free to send our way a PR. This chart is 100% community maintained.

[johannagnarsson]

Yes will try to put together a PR for sure! Just wanted to post this first before the PR.

[anthonysomerset]

FYI i also bumped into this... i ended up basically fixing by hand aka option 4 - and i also had to initially generate a new server cert as well - aka Step 4 from here: https://www.puppet.com/docs/puppet/7/ssl_regenerate_certificates.html

i would also argue that given that Puppet 6 is now EOL we could likely drop support for legacy folder structures and just import with the proper structures in place which to me looks like

1. update the preinstall job to also mount the ca PVC in the correct place
2. update the extraction logic to extract to the 2 folders and put the symlink in place (related issue Can't import certs if archive greater than approx 1MiB #229)
3. possibly generate new master cert if required (related to multiMasters enabled can cause infinite wait to init in some scenarios #228)