Practice Test - DaemonSets
Solutions to practice test daemonsets
-
Run the command kubectl get daemonsets –all-namespaces
```
$ kubectl get daemonsets --all-namespaces
```
-
Run the command kubectl get daemonsets –all-namespaces
```
$ kubectl get daemonsets --all-namespaces
```
-
Run the command kubectl get all –all-namespaces and identify the types
```
$ kubectl get all --all-namespaces
```
-
Run the command kubectl describe daemonset kube-proxy –namespace=kube-system
```
$ kubectl describe daemonset kube-proxy --namespace=kube-system
```
-
Run the command kubectl describe daemonset kube-flannel-ds-amd64 –namespace=kube-system
```
$ kubectl describe daemonset kube-flannel-ds-amd64 --namespace=kube-system
```
-
Create a daemonset
```
$ vi ds.yaml
```
```
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: elasticsearch
namespace: kube-system
labels:
k8s-app: fluentd-logging
spec:
selector:
matchLabels:
name: elasticsearch
template:
metadata:
labels:
name: elasticsearch
spec:
tolerations:
# this toleration is to have the daemonset runnable on master nodes
# remove it if your masters can't run pods
- key: node-role.kubernetes.io/master
effect: NoSchedule
containers:
- name: elasticsearch
image: k8s.gcr.io/fluentd-elasticsearch:1.20
```
-
To create the daemonset and list the daemonsets and pods
```
$ kubectl create -f ds.yaml
$ kubectl get ds -n kube-system
$ kubectl get pod -n kube-system|grep elasticsearch
```