Removal of Open-iSCSI ?

[dgiebert]

BurmillaOS Version: Not yet installed, still using rancheros

Where are you running BurmillaOS? Baremetal at Hetzner

Do you use some service(s) which are not enabled by default? open-iscsi

I am planning to do a test run of BurmillaOS including installation and documentation for Hetzner, was there a reason to remove the open-iscsi service as it would be needed for Longhorn ?

https://longhorn.io/docs/1.0.2/deploy/install/#installation-requirements

[olljanat]

was there a reason to remove the open-iscsi service

Good question. This definitely need to be described on documentation.

I find out a while ago that open-iscsi services didn't worked correctly on Ubuntu console (and most probably that is case on all non-default consoles). When investigated it I find out this rancher#2636

To avoid that kind of console specific issues I decided that it is better to support only one console and it ended to be Debian (discussed on #9). As part of that work I included open-iscsi to console.

So "open-iscsi" is already included to BurmillaOS and it just need to be activated by including this to cloud-init:

write_files:
- content: |+
    #!/bin/bash
    /etc/init.d/iscsid start
    modprobe iscsi_tcp
    exit 0
  owner: root
  path: /etc/rc.local

Depending feedback we can just write that to documentation as many iSCSI use cases anyway need some other commands to run on server start anyway (we example check that nutanix-dvp-docker-volume-plug-in is installed and enabled on rc.local after start iscsi service).

Other option would be reinvent open-iscsi service on way that it will just run those two commands after server start.

as it would be needed for Longhorn ?

https://longhorn.io/docs/1.0.2/deploy/install/#installation-requirements

Also note that at least on my current thinking we do not plan support K8s or any its tools on BurmillaOS (more about it on #22) but with that extension to cloud-init config it most probably will work.

[dgiebert]

Even though it is not officially supported by BurmillaOS, I got RKE + Longhorn working using your snippet.
A small change needs to be made as rc.local needs to be executable:

write_files:
- content: |+
    #!/bin/bash
    /etc/init.d/iscsid start
    modprobe iscsi_tcp
    exit 0
  owner: root
  permissions: '0700'
  path: /etc/rc.local

[olljanat]

Even though it is not officially supported by BurmillaOS, I got RKE + Longhorn working

Just to clarify, we are not planning to do any changes which would break this configuration. "Not supported" in this context means that we do not test that configuration or promise that it works on future version. However based on information in here it might be that Kubernetes 1.23 does not anymore contain Docker support so it will not be possible run that on BurmillaOS.