K
Q

Kubernetes container won't set Request resources (CPU & RAM) properly

12/13/2017

I am trying to set a fixed resource value to my kubernetes container. When I try the following:

//cont = v1.Container
log.Println("Before", cont.Resources.Requests.Memory())
cont.Resources.Requests.Memory().SetMilli(512) //new wanted value
log.Println("After", cont.Resources.Requests.Memory())

log.Println("Before", cont.Resources.Requests.Cpu())
cont.Resources.Requests.Cpu().SetScaled(2, resource.Giga) //new wanted value
log.Println("After", cont.Resources.Requests.Cpu())

I get this:

Before 0
After 0
Before 0
After 0

Why doesn't Set update my values to the newer ones? How can I set the CPU & RAM resources properly?

-- Menelaos Kotsollaris
kubernetes
kubernetes-go-client

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1 Answer

12/16/2017

Thanks to Dim's answer, I managed to find a solution. It seems that when resources are not set, one cannot set the new value in the data structure returned by Memory(). The proper way to do it is this:

cont.Resources.Requests = make(map[v1core.ResourceName]resource.Quantity)
cont.Resources.Requests[v1core.ResourceMemory] = *resource.NewQuantity(int64(512), resource.BinarySI)
cont.Resources.Requests[v1core.ResourceCPU] = *resource.NewQuantity(int64(4), resource.BinarySI)

Cheers!

-- Menelaos Kotsollaris
Source: StackOverflow