Error when deploying the nextcloud charm and relating to PostgreSQL charm

[marceloneppel]

I was trying to deploy the nextcloud charm using those instructions, but couldn’t manage to make it work.

I changed the deploy commands a little bit (due to the changes in the PG charm channels and that the nextcloud charm is available only on the edge channel):

juju add-model my-nextcloud
juju model-config default-series=focal
juju deploy postgresql --channel latest/stable
juju deploy nextcloud --channel latest/edge
juju relate nextcloud:db postgresql:db

The error that I received was the following:

unit-nextcloud-0: 13:05:24 ERROR unit.nextcloud/0.juju-log Uncaught exception while in charm         code:
Traceback (most recent call last):
  File "./src/charm.py", line 596, in <module>
    main(NextcloudCharm)
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/main.py", line 434, in main
    framework.reemit()
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/framework.py", line 840, in reemit
    self._reemit()
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/framework.py", line 919, in _reemit
    custom_handler(event)
  File "./src/charm.py", line 291, in _on_start
    self._on_update_status(event)
  File "./src/charm.py", line 455, in _on_update_status
    self._checkLogConfigDiff()
  File "./src/charm.py", line 589, in _checkLogConfigDiff
    if cluster_rel.data[self.app]['nextcloud_config'] == str(nextcloud_config):
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/model.py", line 1493, in __getitem__
    return super().__getitem__(key)
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/model.py", line 695, in __getitem__
    return self._data[key]
KeyError: 'nextcloud_config'
unit-nextcloud-0: 13:05:24 ERROR juju.worker.uniter.operation hook "update-status" (via hook     dispatching script: dispatch) failed: exit status 1

Juju version: 2.9.42

[erik78se]

Thanx for reporting this. I'm working on getting the charm fixed up for the new postgresql charm.

Meanwhile - a workaround if to add the missing key with a None value.

[marceloneppel]

Thanx for reporting this. I'm working on getting the charm fixed up for the new postgresql charm.

Meanwhile - a workaround if to add the missing key with a None value.

Thanks Erik! I'm gonna use you suggestion to patch the missing key.

[erik78se]

This is the code you can use:

    def _checkLogConfigDiff(self):
        """
        Compares nextcloud config.php with cluster/peer with application databag.
        Logs this information only.
        """
        cluster_rel = self.model.relations['cluster'][0]
        try:
            if 'nextcloud_config' in cluster_rel.data[self.app]:
                with open(NEXTCLOUD_CONFIG_PHP) as f:
                    nextcloud_config = f.read()
                    if cluster_rel.data[self.app]['nextcloud_config'] == str(nextcloud_config):
                        logger.info("No manual/local changes to nextcloud config.php detected.")
                    else:
                        logger.warning("Manual/local changes to config.php detected, will be overwritten by config updates.")
            else:
                logger.info("nextcloud_config key not found in cluster_rel.data.")
        except KeyError:
            logger.error("Error accessing cluster_rel.data dictionary.")

[marceloneppel]

This is the code you can use:

    def _checkLogConfigDiff(self):
        """
        Compares nextcloud config.php with cluster/peer with application databag.
        Logs this information only.
        """
        cluster_rel = self.model.relations['cluster'][0]
        try:
            if 'nextcloud_config' in cluster_rel.data[self.app]:
                with open(NEXTCLOUD_CONFIG_PHP) as f:
                    nextcloud_config = f.read()
                    if cluster_rel.data[self.app]['nextcloud_config'] == str(nextcloud_config):
                        logger.info("No manual/local changes to nextcloud config.php detected.")
                    else:
                        logger.warning("Manual/local changes to config.php detected, will be overwritten by config updates.")
            else:
                logger.info("nextcloud_config key not found in cluster_rel.data.")
        except KeyError:
            logger.error("Error accessing cluster_rel.data dictionary.")

Cool! Thanks again, @erik78se! I tested that patch and now I could relate the nextcloud charm to the PostgreSQL charm.

[marceloneppel]

Just to update the issue, if it's a not know error, the new revision of the charm fails with the following error:

unit-nextcloud-0: 18:04:57 ERROR unit.nextcloud/0.juju-log Uncaught exception while in charm code:
Traceback (most recent call last):
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/./src/charm.py", line 635, in <module>
    main(NextcloudCharm)
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/main.py", line 441, in main
    _emit_charm_event(charm, dispatcher.event_name)
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/main.py", line 149, in _emit_charm_event
    event_to_emit.emit(*args, **kwargs)
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/framework.py", line 354, in emit
    framework._emit(event)
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/framework.py", line 830, in _emit
    self._reemit(event_path)
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/venv/ops/framework.py", line 919, in _reemit
    custom_handler(event)
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/./src/charm.py", line 144, in _on_config_changed
    self.updateClusterRelationData()
  File "/var/lib/juju/agents/unit-nextcloud-0/charm/./src/charm.py", line 126, in updateClusterRelationData
    with open(NEXTCLOUD_CONFIG_PHP) as f:
FileNotFoundError: [Errno 2] No such file or directory: '/var/www/nextcloud/config/config.php'

I also tried to deploy it without relating to PostgreSQL and got the same error.

[erik78se]

I'll see if I can reproduce this.

Also, I'm in the process of revamping the repos and its now also made public.

https://github.com/nextcloud-charmers/operator-nextcloud

This repo will be deprecated eventually as to move into the new one.

[erik78se]

Would you mind show how you did deploy it?

[marceloneppel]

Would you mind show how you did deploy it?

juju bootstrap localhost lxd
juju add-model my-nextcloud
juju model-config default-series=jammy
juju deploy nextcloud --channel edge

Juju client and agent: 2.9.43
LXD: 5.14-7072c7b