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--- content:serverbasics:docker [2024/05/18 23:04] – [Check Docker install] Daniel
+++ content:serverbasics:docker [2024/06/04 14:44] (aktuell) – Daniel
@@ Zeile 1: / Zeile 1: @@
 ====== Docker (rootless) + Portainer ======
-Docker is a powerful solution for setting up Services. This on will give you hints how to setup Docker in a good way.
+Docker is a powerful solution for setting up Services. This short Introducion will give you hints how to setup Docker in a good way in userspace, so no root-access is needed for Docker.
 Currently i am Experimenting on that topic, so maybe this documentation will be ready to use, maybe not.
@@ Zeile 22: / Zeile 22: @@
 ===== Packages NOT to install =====
-I had really a lot of troubles with the package in the AddOn- Repository: ''[[https://download.opensuse.org/repositories/Virtualization:/containers/${releasever}/|https://download.opensuse.org/repositories/Virtualization:/containers/${releasever}/]]'' while they are not installing docker the same way, that docker would do. For example they will not be installed in User-Subspace only, but will use systems Docker executables installed in global paths. This is a problem when using btrfs - as btrfs is not fully compatible with docker. So i won't use this any more.
+I had really a lot of troubles with the package Docker-Rootless in the AddOn- Repository: ''[[https://download.opensuse.org/repositories/Virtualization:/containers/${releasever}/|https://download.opensuse.org/repositories/Virtualization:/containers/${releasever}/]]'' while they are not installing docker the same way, that docker would do. For example they will not be installed in User-Subspace only, but will use systems Docker executables installed in global paths. This is a problem when using btrfs - as btrfs is not fully compatible with docker. So i won't use this any more.
 So i disabled the following packages and locked them to never install:
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 Ceck the Environement to have the settings:
 <code>
 docker@pcserver2023:~> Abgemeldet
 Connection to localhost closed.
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 Now check ''docker info'':
 <code>
 docker@pcserver2023:~> docker info
@@ Zeile 262: / Zeile 263: @@
 </code>
-Important things:
+==== Additional knowledge ====
   * Storage driver and FS-Type : overlay2 should always be used, btrfs is outdated! XFS and d_type are important!
   * CGroup Version needs to be 2 or better
+  * If you see Docker complaining about Module aufs at start: do not care about - that module is obsolete
+===== IP-Filter =====
+When starting Docker, an the log says:
+<code>
+level=warning msg="Running modprobe bridge br_netfilter failed with message: modprobe: ERROR: could not insert 'br_netfilter': Operation not permitted\ninsmod /lib/modul>
+level=info msg="skipping firewalld management for rootless mode"
+</code>
+You first need to load the module with modprobe.
+For system startup, use ''/etc/modules-load.d''  and creat e a file ''docker-rootless.conf''  in it, containing that module.
 ===== IPTables =====
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 </code>
 ===== Configuring Docker Daemon =====
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 </file>
 ===== Create a place for Yamls =====