Plugin timing out without doing anything when running in VPC

Hi,

I’m currently using Serverless 1.13.2.and using serverless-plugin-warmup to warmup my lambdas.

The warmup lambda is correctly invoked every 5 minutes. However, it doesn’t actually call any of my lambdas and eventually times out. I’ve increased the time out to several minutes and it still doesn’t call anything and simply times out.

The logs don’t tell much either:

START RequestId: 37f7c285-4b45-11e7-85cb-c75ba9915e76 Version: $LATEST
2017-06-07T05:50:33.990Z	37f7c285-4b45-11e7-85cb-c75ba9915e76	Warm Up Start
END RequestId: 37f7c285-4b45-11e7-85cb-c75ba9915e76
REPORT RequestId: 37f7c285-4b45-11e7-85cb-c75ba9915e76	Duration: 10000.97 ms	Billed Duration: 10000 ms Memory Size: 128 MB	Max Memory Used: 32 MB
2017-06-07T05:50:43.982Z 37f7c285-4b45-11e7-85cb-c75ba9915e76 Task timed out after 10.00 seconds

Any hint of what the problem might be?

[contrarianaupong]

You can set the warmup to use no VPC, while others functions with VPC Simply override the vpc setting in warmup by adding vpc: securityGroupIds: [] subnetIds: []

Here is the reference. https://github.com/serverless/serverless/issues/4387#issuecomment-337116499

[JerseyGood]

@contrarianaupong 's way works

but need to hack into addWarmUpFunctionToService() (I don’t other ways around)

   /** SLS warm up function */
    this.serverless.service.functions.warmUpPlugin = {
      description: 'Serverless WarmUP Plugin',
      events: this.warmup.schedule.map(schedule => ({ schedule })),
      handler: this.pathHandler,
      memorySize: this.warmup.memorySize,
      name: this.warmup.name,
      runtime: 'nodejs8.10',
      package: {
        individually: true,
        exclude: ['**'],
        include: [this.folderName + '/**']
      },
      timeout: this.warmup.timeout,
      // override provider level of VPC settings.
      vpc: {
        securityGroupIds: [],
        subnetIds: []
      }
    }

A better alternative would be Not using Provider VPC settings and set Function VPC Configurations one by one, which leaves warmup function “out of VPC”