ID: 10378
Title: Improve "Update DNS cache" / cmk --update-dns-cache performance
Component: Core & setup
Level: 1
Class: Bug fix
Version: 1.7.0i1
The operation was performing a lot of needless operations. The update of
several thousands of hosts DNS entries took way too long. The exact time needed
depends mostly on the number of hosts, cache size, DNS lookup performance and
so on. But even with good responding servers the operation took too long,
because the cache was updated in a very inefficient way when calling the
"Update DNS cache" action in WATO or "cmk --update-dns-cache" from the command
line.
The operation is now more than a 100 times faster (tested with ~2000 hosts and
a fast responding DNS server).
ID: 10468
Title: New plugin: Memory usage of Couchbase buckets
Component: Checks & agents
Level: 1
Class: New feature
Version: 1.7.0i1
A new plugin is introduced monitoring the Couchbase buckets' memory usage.
Please configure the Couchbase special agent to discover these services.
ID: 10377
Title: Fix terminating "cmk --update-dns-cache" with CTRL+C
Component: Core & setup
Level: 1
Class: Bug fix
Version: 1.7.0i1
Previously the CTRL+C termination was not working during the whole execution
time of the call.
ID: 10427
Title: cmk-update-agent: Show info about non-existing host on registration
Component: agents
Level: 1
Class: New feature
Version: 1.7.0i1
On agent registration, an information will now be displayed if the hostname
that just got registered is not known in the activated monitoring configuration.
Please note that the spelling of the registered host and the monitored host
must match exactly to enable automatic updates.
The displayed information should help to avoid errors and to clarify things.
ID: 10376
Title: omd: Fix possible stopped system apache after removing a site
Component: Site Management
Level: 1
Class: Bug fix
Version: 1.7.0i1
Fixed an unlikely error which could lead to a stopped system apache
process. This could happen when the system apache is reloaded / restarted
while a "omd rm" call is being executed.
This could happen because the site directory is removed while the sites
system apache hook (/omd/apache/[site].conf) still points to the sites
apache config file which does not exist anymore after removing the site
directory.
ID: 10449
Title: ps: cleanup counters of processes which do not exist anymore
Component: Checks & agents
Level: 1
Class: Bug fix
Version: 1.7.0i1
The new section ps_lnx was introduced in version 1.6.0. Unfortunately,
counters of processes which do not exist anymore were not cleaned
up for this section. This may lead to slowly growing files in
tmp/check_mk/counters for hosts with the ps_lnx section. Since the
check helpers have to parse this files on a regular basis this leads
to an increased CPU load.
It's worth to note that counters only accumulate if you use process
monitoring and only if the PIDs of these processes change frequently.
If you do not use process monitoring or the PIDs of your monitored
processes do not change, you are not affected by this issue.
ID: 10299
Title: zerto: special agent and check for zerto rpo monitoring
Component: Checks & agents
Level: 2
Class: New feature
Version: 1.7.0i1
This change allows the configuration of the Zerto Special Agent
which in turn allows retrieval and monitoring of RPO data. The required
credentials can be specified using a WATO rule.