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I'm new to selfhosting, I've installed Turnkey nextcloud on my proxmox server, and done the basic setup, now I'm faced with this.
Any advice?
Some of them can be fixed, though you don't necessarily need to do all of them. Easiest thing is ignoring them as long as everything works.
One at a time?
I came to say this. And not flippantly. Each one of these takes a dive into the documentation to resolve. Sometimes they are related and you can solve some issues with one change, but each one is a challenge to be solved.
OP, focus on Security first, Errors second, and warnings third. Often the warnings are not a huge deal to having an operational nextcloud, but might impact performance or excessive logging for example.
This is the way
You could read the documentation that each link points to, you might need to have console or SSH access to the server
I do not know any Turnkey, so perhaps they have some specific documentation about what to do after installing.
The first time I installed Nextcloud, I did it on bare metal in Debian, following the LearnLinuxTV guide. It went through things like how to configure the Opcache, which is one of the warnings you have. If you're not following a guide, you'll have to find one, or search each message individually and research a solution.
Eventually I decided to reinstall with NextcloudPi because they know a lot more about systems administration than me, and had sane defaults set for most things. My first installation had some bugs that were probably from default configurations or mistakes I made perhaps. But I've had a good experience with ncp.
One last thing you'll learn while researching the messages: some may be from bugs in the software that will be solved over time with nextcloud updates. Some will have clear solutions. Some may be generalized messages arising from network instability (like if Nextcloud is trying to sync over a weak Wi-Fi signal sometimes) or a hardware problem that can be tricky to track down, but might not be important. Just make sure you are doing good backups and you'll be fine.
Thank you, this is a solid answer.
I was hoping to find some kind of guide or at least reassurance that I'm going down the right path. It looks like it
As others have said. The errors are easily fixed and documented if annoying. Some will require console access but are usually pretty safe.
Your link is malformatted btw 😉
Are you going to use Nextcloud Talk? Disable it if not, and see how much of the repeating errors clear up.
I fixed the link.
I disabled talk for now, I still get the same amount of warnings.
Then just go through each error, select the first part of that error, and search it up. It should lead you to fixes.
Seems like you just need to run some updates to fix a few of them.