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StarlingX System Configuration Management
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Eric MacDonald f19dd0498f Mtce: Make Multi-Node Failure Avoidance Configurable 
The maintenance system implements a high availability (HA) feature
designed to detect the simultaneous heartbeat failure of a group
of hosts and avoid failing all those hosts until heartbeat resumes
or after a set period of time.

This feature is called Multi-Node Failure Avoidance, aka MNFA, and
currently has the hosts threshold set to 3 and timeout set to 100 secs.

This update implements enhancements to that existing feature by
making the 'number-of-hosts threshold' and 'timeout period'
customer configurable service parameters.

The new service parameters are listed under platform:maintenance which
display with the following command

> system service-parameter-list

mnfa_threshold: This new label and value is added to the puppet
managed /etc/mtc.ini and represents the number of hosts that are
required to fail heartbeat as a group; within the heartbeat
failure window (heartbeat_failure_threshold) after which maintenance
activates MNFA Mode.

This update changes the default number of failing hosts from
3 to 2 while allowing a configurable range from 2 to 100.

mnfa_timeout: This new label and value is added to the puppet
managed /etc/mtc.ini. While MNFA mode is active, it will remain active
until the number of failing hosts drop below the mnfa_threshold or this
timer expires. The MNFA mode deactivates on the first occurance of
either case. Upon deactivation the remaining failed hosts are no
longer treated as a failure group but instead are all Gracefully
Recovered individually. A value of zero imposes no timeout making the
deactivation criteria solely host based.

This update changes the default 100 second timer to 0; no-timeout
while permitting valid a times range from 100 to 86400 secs or 1 day.

DocImpact
Story: 2003576
Task: 24903

Change-Id: I2fb737a4cd3c235845b064449949fcada303d6b2
Signed-off-by: Eric MacDonald <eric.macdonald@windriver.com>
 		2018-08-31 10:43:25 -04:00
compute-huge Integrate host configuration into configuration framework 2018-06-14 16:03:52 -05:00
computeconfig Add support for external Ceph 2018-07-31 15:48:43 -04:00
config-gate StarlingX open source release updates 2018-05-31 07:35:52 -07:00
configutilities Merge "Decouple Fault Management from stx-config" 2018-08-17 14:21:36 +00:00
controllerconfig fix dependency path and requirement to enable tox 2018-08-28 09:54:45 +08:00
devstack Remove installation of stx-utils 2018-08-23 00:06:31 -05:00
puppet-manifests Mtce: Make Multi-Node Failure Avoidance Configurable 2018-08-31 10:43:25 -04:00
puppet-modules-wrs Mtce: Make Multi-Node Failure Avoidance Configurable 2018-08-31 10:43:25 -04:00
storageconfig StarlingX open source release updates 2018-05-31 07:35:52 -07:00
sysinv Mtce: Make Multi-Node Failure Avoidance Configurable 2018-08-31 10:43:25 -04:00
tmp/patch-scripts/EXAMPLE_SYSINV/scripts StarlingX open source release updates 2018-05-31 07:35:52 -07:00
.gitignore Add default test framework 2018-06-08 20:06:21 -05:00
.gitreview [Feature] adding support devstack for stx-config sysinv 2018-08-20 13:17:55 +08:00
.zuul.yaml Add a zuul job for sysinv tox unittest 2018-08-13 16:34:06 +08:00
CONTRIBUTORS.wrs StarlingX open source release updates 2018-05-31 07:35:52 -07:00
LICENSE StarlingX open source release updates 2018-05-31 07:35:52 -07:00
README.rst StarlingX open source release updates 2018-05-31 07:35:52 -07:00
centos_iso_image.inc Split image.inc across git repos 2018-08-16 10:08:08 -04:00
centos_pkg_dirs Decouple Fault Management from stx-config 2018-08-16 17:24:19 -04:00
test-requirements.txt Add default test framework 2018-06-08 20:06:21 -05:00
tox.ini Add default test framework 2018-06-08 20:06:21 -05:00

README.rst

stx-config

StarlingX Configuration Management