Hi They are configured by the operator that deploys OpenWhisk by editing the runtimes.json [1] for example if you open the file you will see that nodejs6 look at the stemCell field it contains the values 2 and 256mb. This means that the invoker will always try to keep 2 containers of 256mb for nodejs6 as spare and ready to receive a new invocation.
You can edit the runtimes manifest to declare stemCells for any runtime kind. [1] https://github.com/apache/incubator-openwhisk/blob/master/ansible/files/runtimes.json - Carlos Santana @csantanapr > On Feb 8, 2019, at 3:03 AM, Krzysztof Sobkowiak <[email protected]> > wrote: > > Hi > > I was reading some discussions and blogs about prewarmed containers, but I > still have no idea how to > configure OpenWHisk to prewarm containers. I have seen a pull request, where > some kind of > containers can be defined as prewarmed and a count of prewarmed containers > can be defined. Can > someone clarify me where and how I can define it? > > Best regards > Krzysztof > > > > -- > Krzysztof Sobkowiak (@ksobkowiak) > > JEE & OSS Architect, Integration Architect > Apache Software Foundation Member (http://apache.org/) > Apache ServiceMix Committer & PMC Member (http://servicemix.apache.org/) > Senior Delivery Architect @ Capgemini SSC (http://www.capgeminisoftware.pl/)
