From checkmk-werks-lvl1@lists.checkmk.com Mon Aug 21 06:58:19 2023
From: Checkmk werks level 1 <checkmk-werks-lvl1@lists.checkmk.com>
To: checkmk-werks-lvl1@lists.checkmk.com
Subject:
 Checkmk Werk 15289: mk_oracle: Revert werk 15559, use tnsping when available
Date: Mon, 21 Aug 2023 08:58:17 +0200
Message-ID: <1692601097.338929.1054398.nullmailer@review.lan.tribe29.com>
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ID:          15289
Title:       mk_oracle: Revert werk 15559, use tnsping when available
Component:   agents
Level:       1
Class:       Bug fix
Version:     2.3.0b1

<a href=3D"https://checkmk.com/werk/15559">Werk 15559</a> removed the invocat=
ion
of <tt>tnsping</tt>.

<tt>tnsping</tt> was used to check if the tns-alias could be reached. If it
could not be reached via <tt>tnsping</tt>, hostname and port is used to conne=
ct
to the database.

With <a href=3D"https://checkmk.com/werk/15559">Werk 15559</a> the invocation=
 of
<tt>tnsping</tt> was completely removed. tns-alias was always used. This lead
to problems with different configurations of <tt>mk_oracle</tt>.

This change introduces a check if the <tt>tnsping</tt> binary is available.
If the binary is available, the logic of <tt>mk_oracle</tt> before Werk 15559
is restored. If the binary is not available, it is assumed that the tns-alias
can be reached.



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