Static PODs vs DaemonSets
| Static PODs | DaemonSets |
|---|
| Created by kubelet | Created by kube-api server (DaemonSet Controller) |
| Deploy Control Plane components as Static PODs | Deploy Monitoring Agents, Logging Agents on Nodes |
| Ignore kube-scheduler | Ignore kube-scheduler |
Default Static PODs Location
Static PODs
When created or deleted a YAML file in the /etc/kubernetes/manifests, the PODs will be created or deleted automatically.
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| cd /etc/kubernetes/manifests
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Check How many PODs exist in the Node
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| ls /etc/kubernetes/manifests
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Imperative
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| kubectl run --restart=Never --image=nginx --dry-run=client -o yaml --command sleep 1000 > /etc/kubernetes/manifests/nginx.yaml
|
Check Static PODs Configuration
Find a Node of the POD
How to figure out it's a static POD?
In a POD’s name, there is a postfix like -master that is -<node-name>.
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2
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| kubectl get pods -o wide
kubectl get pods --all-namespaces -o wite | grep "\-master"
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Connect to the Node
Find the Location of the Configuration
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2
| # Check '--config' option
ps -ef | grep kubelet
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Check staticPodPath Option
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2
| # Check 'staticPodPath'
grep -i staticpod /var/lib/kubelet/config.yaml
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CozyFex