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Bug 1788576 - Upgrade fails downloading packages when repository hostname is defined in /etc/hosts only
Summary: Upgrade fails downloading packages when repository hostname is defined in /et...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: leapp-repository
Version: 7.7
Hardware: All
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Leapp team
QA Contact: Alois Mahdal
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-01-07 14:37 UTC by Renaud Métrich
Modified: 2023-09-07 21:23 UTC (History)
5 users (show)

Fixed In Version: leapp-repository-0.10.0-2.el7_8
Doc Type: No Doc Update
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-04-29 01:45:58 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:1959 0 None None None 2020-04-29 01:46:15 UTC

Description Renaud Métrich 2020-01-07 14:37:19 UTC 
Description of problem:

This can be particularly seen with Satellite installations defining another repository than cdn.redhat.com.
When the repository is *not* resolvable through DNS, but is only known to /etc/hosts, the upgrade of the system fails with the following error in "phase 2" (systemd-nspawn -D /var/lib/leapp/el8userspace ...):

[MIRROR] irqbalance-1.4.0-4.el8.x86_64.rpm: Curl error (6): Couldn't resolve host name for https://<HOSTNAME>/content/dist/rhel8/8.1/x86_64/baseos/os/Packages/i/irqbalance-1.4.0-4.el8.x86_64.rpm [Could not resolve host: <HOSTNAME>]


Version-Release number of selected component (if applicable):

leapp-0.9.0-1.el7.rpm


How reproducible:

Always


Steps to Reproduce:
1. Make sure "cdn.redhat.com" is not available through DNS

 - add "PEERDNS=no" in /etc/sysconfig/network-scripts/ifcfg-XXX file
 - restart the network
 - empty file /etc/resolv.conf
 - add entry to /etc/hosts:

  95.101.56.251	cdn.redhat.com
  10.4.204.72	subscription.rhsm.redhat.com


2. Run "leapp upgrade"

Actual results:

Fails fetching packages in 2nd phase


Additional info:

This is due to /etc/hosts from the hosts not being available in /var/lib/leapp/el8userspace.
Instead /var/lib/leapp/el8userspace/etc/hosts contains the default file (with "localhost" entries only) installed by setup-2.12.2-2.el8_1.1.noarch.rpm
Comment 2 Renaud Métrich 2020-01-07 14:41:28 UTC 
Prior to executing phase 2 ("systemd-nspawn -D /var/lib/leapp/el8userspace ..."), /etc/hosts from the system must be copied to /var/lib/leapp/el8userspace/etc
Comment 3 Petr Stodulka 2020-01-07 15:03:18 UTC 
Thanks Renaud for report and investigation! I have feeling that we probably missed this possible issue several times. I will add fix fix soon.
Comment 4 Renaud Métrich 2020-01-07 15:16:03 UTC 
Note that probably other files need to be copied as well, e.g. /etc/nsswitch.conf if using alternative resolution methods (Centrify, ...)
Comment 5 Petr Stodulka 2020-01-07 15:28:13 UTC 
Good point. I will probably sync with network sst about the proper solution as it looks this is just the tip of the iceberg.
Comment 6 Petr Stodulka 2020-04-17 10:20:08 UTC 
related PR: https://github.com/oamg/leapp-repository/pull/474
Comment 12 errata-xmlrpc 2020-04-29 01:45:58 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:1959
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