5f3f13cc0a
Replace socket-based liveness checks with scripts The current TCP socket-based liveness/readiness check for Ceph doesn't accurately reflect when daemons are live, doesn't handle multiple OSDs on a host, and doesn't work when hostNetworking is in use and the Ceph network is different from the one associated with the hostname. This change adds new scripts for checking Ceph monitor and OSD liveness/readiness that query the Ceph Unix domain sockets to get daemon status and exits 0 iff all sockets report that their daemons are in an "active" state. This isn't perfect: we don't know how many daemons SHOULD be active, so if only a subset is live and the others have no sockets (yet?), we'll still claim the pod is ready. The scripts also don't distinguish between liveness and readiness for OSDs. Change-Id: I5d370b4bc4025fece2e640355c3a29167afca871
200 lines
6.8 KiB
YAML
200 lines
6.8 KiB
YAML
{{/*
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Copyright 2017 The Openstack-Helm Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/}}
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{{- if .Values.manifests.daemonset_mon }}
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{{- $envAll := . }}
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{{- if .Values.deployment.ceph }}
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{{- $dependencies := .Values.dependencies.mon }}
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---
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kind: DaemonSet
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apiVersion: extensions/v1beta1
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metadata:
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name: ceph-mon
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spec:
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template:
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metadata:
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labels:
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{{ tuple $envAll "ceph" "mon" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 8 }}
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spec:
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nodeSelector:
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{{ .Values.labels.mon.node_selector_key }}: {{ .Values.labels.mon.node_selector_value }}
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hostNetwork: true
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dnsPolicy: {{ .Values.pod.dns_policy }}
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serviceAccount: default
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initContainers:
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{{ tuple $envAll $dependencies "" | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
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- name: ceph-init-dirs
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image: {{ .Values.images.tags.daemon }}
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imagePullPolicy: {{ .Values.images.pull_policy }}
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command:
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- /tmp/init_dirs.sh
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volumeMounts:
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- name: ceph-bin
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mountPath: /tmp/init_dirs.sh
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subPath: init_dirs.sh
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readOnly: true
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- name: ceph-bin
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mountPath: /variables_entrypoint.sh
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subPath: variables_entrypoint.sh
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readOnly: true
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- name: pod-var-lib-ceph
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mountPath: /var/lib/ceph
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readOnly: false
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- name: mon-directory
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mountPath: /var/lib/ceph/mon
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readOnly: false
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- name: pod-run
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mountPath: /run
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readOnly: false
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containers:
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- name: ceph-mon
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image: {{ .Values.images.tags.daemon }}
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imagePullPolicy: {{ .Values.images.pull_policy }}
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{{ tuple $envAll $envAll.Values.pod.resources.osd | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
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env:
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- name: K8S_HOST_NETWORK
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value: "1"
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- name: MONMAP
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value: /var/lib/ceph/mon/monmap
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- name: NAMESPACE
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valueFrom:
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fieldRef:
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apiVersion: v1
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fieldPath: metadata.namespace
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- name: CEPH_DAEMON
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value: mon
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- name: CEPH_PUBLIC_NETWORK
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value: {{ .Values.network.public | quote }}
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- name: KUBECTL_PARAM
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value: {{ tuple $envAll "ceph" "mon" | include "helm-toolkit.snippets.kubernetes_kubectl_params" | indent 10 }}
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- name: MON_IP
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valueFrom:
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fieldRef:
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fieldPath: status.podIP
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command:
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- /start_mon.sh
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lifecycle:
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preStop:
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exec:
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command:
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- /remove-mon.sh
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ports:
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- containerPort: 6789
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livenessProbe:
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exec:
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command:
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- /ceph-mon-liveness.sh
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initialDelaySeconds: 60
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periodSeconds: 60
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readinessProbe:
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exec:
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command:
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- /ceph-mon-readiness.sh
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initialDelaySeconds: 60
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periodSeconds: 60
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volumeMounts:
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- name: ceph-bin
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mountPath: /start_mon.sh
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subPath: start_mon.sh
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readOnly: true
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- name: ceph-bin
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mountPath: /remove-mon.sh
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subPath: remove-mon.sh
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readOnly: true
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- name: ceph-bin
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mountPath: /common_functions.sh
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subPath: common_functions.sh
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readOnly: true
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- name: ceph-bin
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mountPath: /ceph-mon-liveness.sh
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subPath: ceph-mon-liveness.sh
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readOnly: true
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- name: ceph-bin
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mountPath: /ceph-mon-readiness.sh
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subPath: ceph-mon-readiness.sh
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readOnly: true
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- name: ceph-etc
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mountPath: /etc/ceph/ceph.conf
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subPath: ceph.conf
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readOnly: true
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- name: ceph-client-admin-keyring
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mountPath: /etc/ceph/ceph.client.admin.keyring
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subPath: ceph.client.admin.keyring
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readOnly: true
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- name: ceph-mon-keyring
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mountPath: /etc/ceph/ceph.mon.keyring
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subPath: ceph.mon.keyring
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readOnly: false
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- name: ceph-bin
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mountPath: /variables_entrypoint.sh
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subPath: variables_entrypoint.sh
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readOnly: true
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- name: ceph-bootstrap-osd-keyring
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mountPath: /var/lib/ceph/bootstrap-osd/ceph.keyring
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subPath: ceph.keyring
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readOnly: false
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- name: ceph-bootstrap-mds-keyring
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mountPath: /var/lib/ceph/bootstrap-mds/ceph.keyring
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subPath: ceph.keyring
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readOnly: false
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- name: ceph-bootstrap-rgw-keyring
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mountPath: /var/lib/ceph/bootstrap-rgw/ceph.keyring
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subPath: ceph.keyring
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readOnly: false
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- name: pod-var-lib-ceph
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mountPath: /var/lib/ceph
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readOnly: false
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- name: mon-directory
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mountPath: /var/lib/ceph/mon
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readOnly: false
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- name: pod-run
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mountPath: /run
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readOnly: false
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volumes:
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- name: ceph-bin
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configMap:
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name: ceph-bin
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defaultMode: 0555
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- name: ceph-etc
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configMap:
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name: ceph-etc
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defaultMode: 0444
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- name: pod-var-lib-ceph
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emptyDir: {}
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- name: pod-run
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emptyDir:
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medium: "Memory"
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- name: mon-directory
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hostPath:
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path: {{ .Values.ceph.storage.mon_directory }}
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- name: ceph-client-admin-keyring
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secret:
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secretName: {{ .Values.secrets.keyrings.admin }}
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- name: ceph-mon-keyring
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secret:
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secretName: {{ .Values.secrets.keyrings.mon }}
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- name: ceph-bootstrap-osd-keyring
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secret:
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secretName: {{ .Values.secrets.keyrings.osd }}
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- name: ceph-bootstrap-mds-keyring
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secret:
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secretName: {{ .Values.secrets.keyrings.mds }}
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- name: ceph-bootstrap-rgw-keyring
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secret:
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secretName: {{ .Values.secrets.keyrings.rgw }}
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{{- end }}
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{{- end }}
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