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Cake day: June 5th, 2023

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  • oranki@sopuli.xyztoSelfhosted@lemmy.worldWhy docker
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    10 months ago

    Portability is the key for me, because I tend to switch things around a lot. Containers generally isolate the persistent data from the runtime really well.

    Docker is not the only, or even the best way IMO to run containers. If I was providing services for customers, I would definetly build most container images daily in some automated way. Well, I do it already for quite a few.

    The mess is only a mess if you don’t really understand what you’re doing, same goes for traditional services.



  • There was a good blog post about the real cost of storage, but I can’t find it now.

    The gist was that to store 1TB of data somewhat reliably, you probably need at least:

    • mirrored main storage 2TB
    • frequent/local backup space, also at least mirrored disks 2TB + more if using a versioned backup system
    • remote / cold storage backup space about the same as the frequent backups

    Which amounts to something like 6TB of disk for 1TB of actual data. In real life you’d probably use some other level of RAID, at least for larger amounts so it’s perhaps not as harsh, and compression can reduce the required backup space too.

    I have around 130G of data in Nextcloud, and the off-site borg repo for it is about 180G. Then there’s local backups on a mirrored HDD, with the ZFS snapshots that are not yet pruned that’s maybe 200G of raw disk space. So 130G becomes 510G in my setup.



  • oranki@sopuli.xyztoLinux@lemmy.mlDNS help needed on Fedora 38
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    1 year ago
    • Open the GUI network settings
    • Set DNS to the IP of the PiHole, make sure the "automatic" switch is off.
    • Do the above for each active interface (ethernet, wlan) and for both IPv4 and IPv6
    • Save/apply settings
    • Turn the interface(s) off, then back on
    • resolvectl flush-caches just in case

    Look at resolvectl dns to check there's no DHCP-acquired DNS servers set anymore

    If you use a VPN, those often set their own DNS servers too, remember to check it as well.






  • For a bit enhanced log file viewing, you could use something like lnav, I think it’s packaged for most distributions.

    Cockpit can be useful for journald, but personally I think GUI stuff is a bit clunky for logs.

    Grep, awk and sed are powerful tools, even with only basic knowledge of them. Vim in readonly mode is actually quite effective for single files too.

    For aggregating multiple servers’ logs good ol’ rsyslog is good, but not simple to set up. There are tutorials online.


  • Oh the times when getting GTA from a friend required 30+ 3½" floppy disks IIRC. That plus making 5 or 6 round trips to friend’s house, because one of them almost always got corrupted during the zip process.

    And since no one had the disk space or knowhow to store the zip packets on HDD for the inevitable re-copying, had to redo the whole pack from scratch each time.

    Edit: disk->HDD