okd/roles/openshift_daemonset_config/templates/daemonset.yml.j2

---
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
  name: {{ openshift_daemonset_config_daemonset_name }}
  annotations:
    kubernetes.io/description: |
      This daemon set manages the operational configuration for a cluster and ensures all nodes have
      a concrete set of config in place. It could also use a local ansible run against the /host directory.
spec:
  selector:
    matchLabels:
      app: {{ openshift_daemonset_config_daemonset_name }}
      confighosts: ops
      ops.openshift.io/role: operations
  updateStrategy:
    type: RollingUpdate
  template:
    metadata:
      labels:
        app: {{ openshift_daemonset_config_daemonset_name }}
        confighosts: ops
        ops.openshift.io/role: operations
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
{% if openshift_daemonset_config_node_selector is defined and openshift_daemonset_config_node_selector != {} %}
      nodeSelector: {{ openshift_daemonset_config_node_selector | to_json }}
{% endif %}
      serviceAccountName: {{ openshift_daemonset_config_sa_name }}
      hostNetwork: true
      hostPID: true
      hostIPC: true
      containers:
      - name: config
        image: centos:7
        env:
        - name: RESYNC_INTERVAL
          value: "{{ openshift_daemonset_config_interval }}"
        command:
        - /bin/bash
        - -c
        - |
          #!/bin/sh
          set -o errexit

          while true; do

            # execute user defined script
            sh /opt/config/{{ openshift_daemonset_config_script }}

            # sleep for ${RESYNC_INTERVAL} minutes, then loop. if we fail Kubelet will restart us again
            echo "Success, sleeping for ${RESYNC_INTERVAL}s"
            exec sleep ${RESYNC_INTERVAL}

          # Return to perform the config
          done
        securityContext:
          # Must be root to modify host system
          runAsUser: {{ openshift_daemonset_config_runasuser }}
          # Permission could be reduced by selecting an appropriate SELinux policy that allows
          # us to update the named directories
          privileged: {{ openshift_daemonset_config_privileged }}
        volumeMounts:
        # Directory which contains the host volume.
        - mountPath: /host
          name: host
        # Our node configuration
        - mountPath: /opt/config
          name: config
{% if openshift_daemonset_config_secrets != {} %}
        # Our delivered secrets
        - mountPath: /opt/secrets
          name: secrets
{% endif %}
        resources:
          requests:
            cpu: {{ openshift_daemonset_config_resources.cpu }}
            memory: {{ openshift_daemonset_config_resources.memory }}
{% if openshift_daemonset_config_monitoring %}
      - name: monitoring
        image: openshifttools/oso-centos7-host-monitoring:latest
        securityContext:
          # Must be root to read content
          runAsUser: 0
          privileged: true

        volumeMounts:
        - mountPath: /host
          name: host
          readOnly: true
        - mountPath: /etc/localtime
          subPath: etc/localtime
          name: host
          readOnly: true
        - mountPath: /sys
          subPath: sys
          name: host
          readOnly: true
        - mountPath: /var/run/docker.sock
          subPath: var/run/docker.sock
          name: host
          readOnly: true
        - mountPath: /var/run/openvswitch
          subPath: var/run/openvswitch
          name: host
          readOnly: true
        - mountPath: /etc/origin
          subPath: etc/origin
          name: host
          readOnly: true
        - mountPath: /usr/bin/oc
          subPath: usr/bin/oc
          name: host
          readOnly: true
          name: host
          readOnly: true
        - mountPath: /host/var/cache/yum
          subPath: var/cache/yum
          name: host
        - mountPath: /container_setup/monitoring-config.yml
          subPath: monitoring-config.yaml
          name: config
        - mountPath: /opt/config
          name: config
        resources:
          requests:
            cpu: 10m
            memory: 10Mi
{% endif %}
      volumes:
      - name: config
        configMap:
          name: {{ openshift_daemonset_config_configmap_name }}
{% if openshift_daemonset_config_secrets != {} %}
      - name: secrets
        secret:
          secretName: {{ openshift_daemonset_config_secret_name }}
{% endif %}
      - name: host
        hostPath:
          path: /