How to add multiple baseurl entries in repo files

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Environment

SUSE Linux Enterprise Server 15 SP2
SUSE Linux Enterprise Server 12 SP5

Situation

Commonly the repository definition files (.repo) in /etc/zypp/repos.d contain one 'baseurl'.
Sometimes, for failover in cases the update server is not available, multiple baseurl entries are helpful.
Zypper/libzypp supports parsing multiple baseurls.

Resolution

The additional url entries can be entered manually in the .repo files.
Per default the .repo files are in /etc/zypp/repos.d/.
An example of such a .repo file is: "SUSE_Linux_Enterprise_Server_12_SP5_x86_64:SLES12-SP5-Pool.repo"

[SUSE_Linux_Enterprise_Server_12_SP5_x86_64:SLES12-SP5-Pool]
name=SLES12-SP5-Pool
enabled=1
autorefresh=0
baseurl=https://a......
type=rpm-md
service=SUSE_Linux_Enterprise_Server_12_SP5_x86_64

Enter the additional baseurl either as:

   baseurl=https://a...
   baseurl=https://b...
or
   baseurl=https://a...
                  https://b...

or a combination of both.

Since SLES15 SP1/2 (libzypp v 17.25.8) it is possible to add the urls in one line separated by blanks, optionally together with a comma ( " " or ", " or " ," or " , ")

   baseurl=https://a... https://b...

ZYPP (zypper) uses the 1st URL. Additional URLs are just used as fallback in case the previous one(s) failed.

After adding the urls, a zypper refresh is recommended

Note:
If the repos are provided by a service, changes (manually or via zypper) may be volatile.
The next service refresh may restore the repos settings.

Disclaimer

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