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kubernetes
Ben McAlindin
Ben McAlindin

Reputation: 542

Kubernetes: Deploy daemon set to all nodes except for master node

I have kubernetes running on version 1.5 with two nodes and one master nodes. I would like to deploy fluentd as a daemon set onto all nodes, but the master node (the master node spams warning messages as it can't find logs). How can I avoid deploying to the master node?

Upvotes: 2

Views: 4984

Answers (3)

Alok Kumar Singh
Alok Kumar Singh

Reputation: 2549

So to make a pod not schedule on a master node you need to add the following

nodeSelector:
    kubernetes.io/role: node

This will make the pod schedule on only nodes. The above example shows the default label for node in kops provisioned cluster. Please very the key value if you have have provisioned the cluster from a different provider

Upvotes: 2

MrE
MrE

Reputation: 20768

You can use a label for your slave nodes and use that label in a selector for the daemon set, which will only deploy on the nodes that have that label.

Inversely, you can define a negative selector to assign the daemon set to pods that don't have a label. In your case, the pod that doesn't have the master's label.

Upvotes: 0

Radek 'Goblin' Pieczonka
Radek 'Goblin' Pieczonka

Reputation: 22884

You're looking for the Taints and Tolerations features. Using these you can define that given node in "tainted" in particular way preventing pods scheduling on this node unless they have a toleration matching that taint.

Upvotes: 0

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