Christopher Faulet 3e0600fbbf BUG/MEDIUM: resolvers: Trigger a DNS resolution if an ADD item is obsolete
When a ADD item attached to a SRV item is removed because it is obsolete, we
must trigger a DNS resolution to be sure the hostname still resolves or
not. There is no other way to be the entry is still valid. And we cannot set
the server in RMAINT immediatly, because a DNS server may be inconsitent and
may stop to add some additionnal records.

The opposite is also true. If a valid ADD item is still attached to a SRV
item, any DNS resolution must be stopped. There is no reason to perform
extra resolution in this case.

This patch must be backported as far as 2.2.
2021-03-12 17:41:28 +01:00
2020-09-12 13:11:24 +02:00
2021-03-05 21:24:23 +01:00
2019-06-15 21:59:54 +02:00
2021-03-05 21:24:23 +01:00
2021-03-05 21:24:23 +01:00

The HAProxy documentation has been split into a number of different files for
ease of use.

Please refer to the following files depending on what you're looking for :

  - INSTALL for instructions on how to build and install HAProxy
  - BRANCHES to understand the project's life cycle and what version to use
  - LICENSE for the project's license
  - CONTRIBUTING for the process to follow to submit contributions

The more detailed documentation is located into the doc/ directory :

  - doc/intro.txt for a quick introduction on HAProxy
  - doc/configuration.txt for the configuration's reference manual
  - doc/lua.txt for the Lua's reference manual
  - doc/SPOE.txt for how to use the SPOE engine
  - doc/network-namespaces.txt for how to use network namespaces under Linux
  - doc/management.txt for the management guide
  - doc/regression-testing.txt for how to use the regression testing suite
  - doc/peers.txt for the peers protocol reference
  - doc/coding-style.txt for how to adopt HAProxy's coding style
  - doc/internals for developer-specific documentation (not all up to date)
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