Bug 14419 - samba reports missing rndc program every ten minutes
Summary: samba reports missing rndc program every ten minutes
Status: RESOLVED FIXED
Alias: None
Product: Samba 4.1 and newer
Classification: Unclassified
Component: DNS server (internal) (show other bugs)
Version: 4.10.15
Hardware: All All
: P5 minor (vote)
Target Milestone: ---
Assignee: Samba QA Contact
QA Contact: Samba QA Contact
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-06-25 20:11 UTC by James B. Byrne
Modified: 2020-06-26 08:39 UTC (History)
0 users

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Description James B. Byrne 2020-06-25 20:11:20 UTC 
Multiple entries similar to the following are found in /var/log/samba4/smbd.log:

  Loading new DNS update grant rules
[2020/06/25 15:53:50.796282,  0] ../../lib/util/util_runcmd.c:327(samba_runcmd_io_handler)
  /usr/sbin/rndc: Failed to exec child - No such file or directory
[2020/06/25 15:53:50.801204,  0] ../../source4/dsdb/dns/dns_update.c:91(dnsupdate_rndc_done)
  ../../source4/dsdb/dns/dns_update.c:90: Failed rndc update - NT_STATUS_UNSUCCESSFUL
[2020/06/25 15:54:50.811383,  2] ../../source4/dsdb/dns/dns_update.c:270(dnsupdate_rebuild)

These occur every 10 minutes or so.  The AD DC is configured to use the internal dns.  There are no bind packages installed on that host.  

The problem is that these errors are swamping the log file.  There are so many entries relating to this one issue that noticing that something else needs attention is seriously impaired.
Comment 1 Stefan Metzmacher 2020-06-26 08:39:42 UTC 
This code is removed in 4.12.

Using the 'rndc command = /bin/true' option in 4.10 and 4.11
should avoid the messages