[v24.2.x] CORE-5749 retry on dns failure #22521
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During a rolling upgrade in cloud, it was observed that RP's kafka client would attempt to connect to the 'reserve' node after it was decomissioned. This was because the error code (C-Ares ENOTFOUND) was not treated as a retriable error. This change checks for the above error code when attempting to connect to a broker and if it is encountered, treats it as a retriable error. Signed-off-by: Michael Boquard <michael@redpanda.com> (cherry picked from commit d79ab90)
Signed-off-by: Michael Boquard <michael@redpanda.com> (cherry picked from commit da09267)
michael-redpanda
approved these changes
Jul 26, 2024
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Backport of PR #22327
Fixes: CORE-6658