resolvconf update-libc error

[Simone Deponti]

In version 2.2.10-1:

the script /etc/resolvconf/update-libc.d/postfix during startup and shutdown generates an error due to the fact that in line 7 it tries to reload postfix via init.d script even if postfix isn't running (and since resolvconf is update before postfix startup and after postfix shutdown, it never works).

A trivial solution might consist in changing line 7 of /etc/resolvconf/update-libc.d/postfix from:

/etc/init.d/postfix/ reload >/dev/null 2>&1

to:

/etc/init.d/postfix/ reload >/dev/null 2>&1 || exit 0

[Zak B. Elep (zakame)]

Thanks ShyWolf9982!

Confirmed on 2.2.10-1ubuntu0.1 . Patch based on previous comment attached.

Cheers,

Zakame

[Zak B. Elep (zakame)]

Addendum: I was able to see that the bug happens on my Kubuntu setup with bind9 and squid. Perhaps invoking postfix to run earlier, just after configuring network interfaces, would be a better solution?

Cheers,

Zakame

[Simone Deponti (shywolf9982)]

"Perhaps invoking postfix to run earlier, just after configuring network interfaces, would be a better solution?"

I don't think so. Starting it before would mean:
a) starting postfix with a temporary invalid resolv.conf (might create problems with any security check postfix run on startup)
b) changing resolv.conf while postfix is running

They are not huge problems, but I think it's better to set the resolving before starting any smtpd, named or whatever.
Actually, the very first solution that came to my mind was to completely delete the postfix reload thingie: but thinking at it a little more made me discover that there were a case where it could be useful; when, for example, you have to reaload your network service and/or change network card settings without having to reboot or manually reload services.

With my patch we have a clean startup (not starting anything before the "basics" are up and running) and we still cover the (rare) case in which the network service needs to be reloaded on a "hot" machine, and we want to keep the services running while this happens.

Best regards,

Simone

[Scott Kitterman (kitterman)]

Debdiff attached to fix this bug and Bug #121823

[Sarah Kowalik (hobbsee-deactivatedaccount)]

uploaded, thanks.

[Scott Kitterman (kitterman)]

postfix (2.4.3-1ubuntu1) gutsy; urgency=low

  * debian/postfix.postinst:
    - Rename fallback_relay to smtp_fallback_relay in generated master.cf
      (LP: #121823)
  * debian/update-libc:
    - Don't raise an error if Postfix isn't running yet (LP: #41302)
  * Change maintainer to Ubuntu Core Developers.

 -- Scott Kitterman <email address hidden> Fri, 22 Jun 2007 21:45:02 -0400

[Scott Kitterman (kitterman)]

postfix (2.4.5-1) unstable; urgency=low

  * New upstream
    - various milter fixes
    - performance improvements on loopback smtp connections
  * Merge changes from Ubuntu
    - debian/postfix.postinst:
      - Rename fallback_relay to smtp_fallback_relay in generated master.cf
        (LP: #121823)
    - debian/update-libc:
      - Don't raise an error if Postfix isn't running yet (LP: #41302)
  * Korean debconf template. Closes: #430752
  * Move postfix into git: git://kernel.ubuntu.com/lamont/postfix.git
  * Drop dpatch use.

 -- Scott Kitterman <email address hidden> Fri, 03 Aug 2007 18:21:15 +0100