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Workspace Instana
Categories Self Hosted
Created by Guest
Created on Aug 18, 2025

RELATED IDEAS

Need improved prereq checking for Standard Edition

There are a number of common problems that we've seen with customer installs where better prereq checking could have prevented an installation failure.    We would like to see the prereq checker improved to check for additional prereqs.

The following items have been noticed that can cause installation failures:

  • If the /etc/hosts file only contains a shortname (instead of fully qualified), the installation fails.
  • If the base domain contains upper case characters, the installation fails.
  • ks3 was previously installed on the server, but not cleaned up properly.   Remnants remain in /etc/rancher, /usr/lib/rancher, etc.
  • podman previously installed on the server, but not cleaned up properly.
  • Not sure, but I think we should prereq check for ANY container technology (docker, containerd)
Idea priority High
  • Guest
    Apr 21, 2026

    Hi Marcelo, 

    Here are comments from the Tiger team on the items that were denied:

    1. Detection of Residual Environments (Cleanup):
    "Clean VM" is a relative requirement, we had several customers who had to fix "clean vms" because they use predefined VMs as a corporate standard, so I would institute on checking existing version as we see. Like if we need certain version of k3s, or other libs we need to check if installed version matches the one we use. 

    2. Hostname & /etc/hosts Validation:
    I disagree, we need to check the "hostname -f" and specified domains (and it doesn't matter if it is in DNC or in /etc/hosts), I've seen many issues like that.

    Reply
  • Guest
    Sep 16, 2025

    In addition, we need the following in our pre-checker:

    • We need to ensure k3s and ctr tools are not installed, because Instana installs them and need to ensure the correct versions are in use.

    • We need to ensure proxy is not changing certificates and if it is then we need to add the corporate CA certificate to Instana backend as well

    • We need to ensure acceptor ports have been changed when single tenant domain is in use

    Reply
  • Guest
    Sep 16, 2025

    Just to add some notes here....
    We have additional requirements for the pre-req checker, and I am not sure if it already exists. Please see the following aha ideas:
    https://ideas.ibm.com/ideas/INSTANA-I-3848
     https://ideas.ibm.com/ideas/INSTANA-I-3897

    Reply
  • Guest
    Aug 19, 2025

    One more scenario I just encountered. A customer had <unit>.<tenant>.<base domain> instead of <unit>-<tenant>.<base domain> in their /etc/hosts file and the install failed. We should validate that the base domain, agent-acceptor, and unit-tenant all resolve properly before we start the install.

    Reply

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