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====== Upgrade my servers ======

Because of PHP security problems from October 2026 I should upgrade my servers to actual versions of OS.

My servers - see [[My servers]].

Plan:

* **-** define which servers are there
    * 185.194.236.66
    * 94.199.215.198
    * 185.162.250.65 (not more necessary -> can be terminated)
    * 202.61.247.140
  * **-** define in which order they should be upgraded
    * 202.61.247.140 by netcup (avril2021.avril.work)
    * 185.194.236.66 by IP-Projects (avril2019.wialon-consulting.de)
    * 94.199.215.198 by IP-Projects (relay / vwiki / www.avril.work)
    * 185.162.250.65 by netcup (not more necessary -> can be terminated) 
  * **-** upgrade all
    * **-** 202.61.247.140 (avril2021.avril.work)
      * **+** create an image
        * was create automatically on 30.10.2026 at 06:xx
      * **+** update Ubuntu <code bash>
sudo apt update
sudo apt upgrade -y
sudo apt autoremove -y
</code>
      * **+** upgrade Ubuntu <code bash>
sudo do-release-upgrade
</code> 
      * **-** install vwiki
      * **-** install OpenRemote
      * **-** run avril2021 (or reinstall it)
    * 185.194.236.66 by IP-Projects (avril2019.wialon-consulting.de)
      * **-** create an image
      * **-** upgrade Ubuntu
      * **-** run avril2019 (or reinstall it)
    * 94.199.215.198 by IP-Projects (relay / vwiki / www.avril.work)
    * 185.162.250.65 by netcup (not more necessary -> can be terminated)

===== Misc =====
<code bash>
# list biggest files and dirs under the root directory
du -ah / | sort -rh | head -n 20
</code>

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