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[Bug 1942232] Re: CloudStack datasource: querying data-server does not work on Fedora 34

 

This bug is believed to be fixed in cloud-init in version 21.4. If this
is still a problem for you, please make a comment and set the state back
to New

Thank you.

** Changed in: cloud-init
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1942232

Title:
  CloudStack datasource: querying data-server does not work on Fedora 34

Status in cloud-init:
  Fix Released

Bug description:
  Cloud provider: CloudStack

  CloudStack datasource uses multiple ways to determine the address of
  the metadata server. One of them (and sometimes the only available) is
  using a DNS query with hostname "data-server".

  However, DNS resolution of "data-server" works because of the DNS
  search domain, which works well with Fedora 33 but not with Fedora 34.

  In Python:

  - With Fedora 33:

  from socket import getaddrinfo
  getaddrinfo("data-server.", 80) => works
  getaddrinfo("data-server", 80)  => works

  - With Fedora 34:

  from socket import getaddrinfo
  getaddrinfo("data-server.", 80) => fails with "[Errno -2] Name or service not known"
  getaddrinfo("data-server", 80)  => works

  This is not caused by a change in Python (Python 3.9.6 is used for
  both) but probably in the underlying getaddrinfo implementation.

  As the final dot is normally used to prevent using the DNS search
  domain, the error is actually normal, and the dot should be removed
  for cloud-init to work.

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References