Container Service for Kubernetes:Create a DaemonSet

Create a DaemonSet in the ACK console

Create a DaemonSet from an image

1. Log on to the ACK console. In the left-side navigation pane, click Clusters.

2. On the Clusters page, click the name of the cluster that you want to manage and choose Workloads > DaemonSets in the left-side navigation pane.

3. In the upper-right corner of the DaemonSets page, click Create from Image.

4. Configure parameters for the DaemonSet.

   1. In the Basic Information step, configure the basic settings of the application. For more information about the parameters, see Create a Deployment from an image.

   2. In the Container step, configure one or more containers. For more information about the parameters, see Create a Deployment from an image.

   3. In the Advanced step, configure the advanced settings of the DaemonSet.

      A DaemonSet can schedule a pod to a node that is in the Unschedulable state. To run a pod on only a specific node, set node affinity, pod affinity, or toleration rules. For more information about the parameters, see Create a Deployment from an image.

5. Click Create.

   After the DaemonSet is created, you can view the DaemonSet on the DaemonSets page.

   Note

   On the DaemonSets page, select Batch Redeploy to redeploy multiple DaemonSets.

Create a DaemonSet from a YAML template

1. In the upper-right corner of the DaemonSets page, click Create from YAML.

2. On the Create page, configure the DaemonSet in the Template section.

3. In the lower part of the Template section, click Create.

   After the DaemonSet is created, you can view the DaemonSet on the DaemonSets page.

Create a DaemonSet by using kubectl

To demonstrate how to create a DaemonSet by using kubectl, a DaemonSet named fluentd-elasticsearch is created in this example.

1. Create a file named daemonset.yaml and copy the following content to the file:

   apiVersion: apps/v1
   kind: DaemonSet
   metadata:
     name: fluentd-elasticsearch
     namespace: kube-system
     labels:
       k8s-app: fluentd-logging
   spec:
     selector:
       matchLabels:
         name: fluentd-elasticsearch
     template:
       metadata:
         labels:
           name: fluentd-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: fluentd-elasticsearch
           image: quay.io/fluentd_elasticsearch/fluentd:v2.5.2
           resources:
             limits:
               memory: 200Mi
             requests:
               cpu: 100m
               memory: 200Mi
           volumeMounts:
           - name: varlog
             mountPath: /var/log
           - name: varlibdockercontainers
             mountPath: /var/lib/docker/containers
             readOnly: true
         terminationGracePeriodSeconds: 30
         volumes:
         - name: varlog
           hostPath:
             path: /var/log
         - name: varlibdockercontainers
           hostPath:
             path: /var/lib/docker/containers

2. Run the following command to create the DaemonSet:

   kubectl create -f daemonset.yaml

   If daemonset.apps/fluentd-elasticsearch created is returned, the DaemonSet is created.