Changing warmup parameters for couchbase nodes

Couchbase Server
1

Hi,

I want to change following warmup parameters for couchbase nodes in a cluster.

ep_warmup_min_items_threshold
ep_warmup_min_memory_threshold

Currently both are having default value “100”

[root@CBS1 couchbase]# /opt/couchbase/bin/cbstats localhost:11210 all -b ptxdata | egrep "ep_warmup_min_items_threshold|ep_warmup_min_memory_threshold"
ep_warmup_min_items_threshold: 100
ep_warmup_min_memory_threshold: 100
[root@CBS1 couchbase]#

Im not able to locate any documentation which mentions how to change these parameters.
Request your help!

Regards
Pratheej

2

All,
Request your help here as we are facing an issue because of the current setting.
Our current auto fail_over timeout is 60 seconds. When we restart a node in the cluster and if that node goes to pending state more than 60 seconds, the node is getting failed over. This we want to avoid by tunning ep_warmup_min_items_threshold and ep_warmup_min_memory_threshold parameters.

Please help…

Regards
Pratheej

3

Look at the documentation for cbepctl to change individual nodes’ ep-engine parameters.

Note that this will only affect the current memcached process, i.e. a restart of that node will revert to the default values.

4

There is way to get the warmup paramters persistant, so they can be used on the next wramup? or a way to configure directly ep-engine?