Table of Contents |
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Kubernetes
Kubernetes Cluster Install
Follow RKE setupĀ OOM RKE Kubernetes Deployment#Quickstart
Kubernetes Services
Storage
Volumes
https://kubernetes.io/docs/concepts/storage/volumes/
Storage Classes
https://kubernetes.io/docs/concepts/storage/storage-classes/
Persistent Volumes
Persistent Volume Claims
Gerrit
Replication
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Code Block | ||
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on vm2 in ~/google
sudo cp gerrit-master/values.yaml .
sudo vi values.yaml
# added hostname, key, cert
sudo helm install ./gerrit-master -n gerrit-master -f values.yaml
NAME: gerrit-master
LAST DEPLOYED: Wed Mar 20 19:03:40 2019
NAMESPACE: default
STATUS: DEPLOYED
RESOURCES:
==> v1/Secret
NAME TYPE DATA AGE
gerrit-master-gerrit-master-secure-config Opaque 1 0s
==> v1/ConfigMap
NAME DATA AGE
gerrit-master-gerrit-master-configmap 2 0s
==> v1/PersistentVolumeClaim
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
gerrit-master-gerrit-master-logs-pvc Pending default 0s
gerrit-master-gerrit-master-db-pvc Pending default 0s
gerrit-master-git-gc-logs-pvc Pending default 0s
gerrit-master-git-filesystem-pvc Pending shared-storage 0s
==> v1/Service
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
gerrit-master-gerrit-master-service NodePort 10.43.111.61 <none> 80:31329/TCP 0s
==> v1/Deployment
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
gerrit-master-gerrit-master-deployment 1 1 1 0 0s
==> v1beta1/CronJob
NAME SCHEDULE SUSPEND ACTIVE LAST SCHEDULE AGE
gerrit-master-git-gc 0 6,18 * * * False 0 <none> 0s
==> v1beta1/Ingress
NAME HOSTS ADDRESS PORTS AGE
gerrit-master-gerrit-master-ingress s2.onap.info 80 0s
==> v1/Pod(related)
NAME READY STATUS RESTARTS AGE
gerrit-master-gerrit-master-deployment-7cb7f96767-xz45w 0/1 Pending 0 0s
NOTES:
A Gerrit master has been deployed.
==================================
Gerrit may be accessed under: s2.onap.info
kubectl get pvc --all-namespaces
NAMESPACE NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
default gerrit-master-gerrit-master-db-pvc Pending default 4m
default gerrit-master-gerrit-master-logs-pvc Pending default 4m
default gerrit-master-git-filesystem-pvc Pending shared-storage 4m
default gerrit-master-git-gc-logs-pvc Pending default 4m
kubectl describe pod gerrit-master-gerrit-master-deployment-7cb7f96767-xz45w -n default
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 4s (x17 over 2m) default-scheduler pod has unbound PersistentVolumeClaims
# evidently missing nfs dirs
ubuntu@bell2:~/google$ sudo helm list
NAME REVISION UPDATED STATUS CHART NAMESPACE
gerrit-master 1 Wed Mar 20 19:03:40 2019 DEPLOYED gerrit-master-0.1.0 default
ubuntu@bell2:~/google$ sudo helm delete gerrit-master --purge
release "gerrit-master" deleted
# via https://github.com/helm/charts/tree/master/stable/nfs-server-provisioner
sudo helm install stable/nfs-server-provisioner --name nfs-server-prov
NAME: nfs-server-prov
LAST DEPLOYED: Wed Mar 20 19:31:04 2019
NAMESPACE: default
STATUS: DEPLOYED
RESOURCES:
==> v1/Pod(related)
NAME READY STATUS RESTARTS AGE
nfs-server-prov-nfs-server-provisioner-0 0/1 ContainerCreating 0 0s
==> v1/StorageClass
NAME PROVISIONER AGE
nfs cluster.local/nfs-server-prov-nfs-server-provisioner 0s
==> v1/ServiceAccount
NAME SECRETS AGE
nfs-server-prov-nfs-server-provisioner 1 0s
==> v1/ClusterRole
NAME AGE
nfs-server-prov-nfs-server-provisioner 0s
==> v1/ClusterRoleBinding
NAME AGE
nfs-server-prov-nfs-server-provisioner 0s
==> v1/Service
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
nfs-server-prov-nfs-server-provisioner ClusterIP 10.43.249.72 <none> 2049/TCP,20048/TCP,51413/TCP,51413/UDP 0s
==> v1beta2/StatefulSet
NAME DESIRED CURRENT AGE
nfs-server-prov-nfs-server-provisioner 1 1 0s
NOTES:
The NFS Provisioner service has now been installed.
A storage class named 'nfs' has now been created
and is available to provision dynamic volumes.
You can use this storageclass by creating a `PersistentVolumeClaim` with the
correct storageClassName attribute. For example:
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: test-dynamic-volume-claim
spec:
storageClassName: "nfs"
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 100Mi
default nfs-server-prov-nfs-server-provisioner-0 1/1 Running 0 1m
kubectl describe pvc gerrit-master-gerrit-master-db-pvc
Events:
Warning ProvisioningFailed 13s (x6 over 1m) persistentvolume-controller storageclass.storage.k8s.io "default" not found
# set creation to true under storageClass (default and shared)
create: true
# further
ExternalProvisioning 3s (x2 over 18s) persistentvolume-controller waiting for a volume to be created, either by external provisioner "nfs" or manually created by system administrator
# need to do a detailed dive into SC provisioners
# i have this unbound PVC - because I have not created the NFS share yet via the prov
default gerrit-master-git-filesystem-pvc Pending shared-storage 2m
# want this bound PVC+PV
inf gerrit-var-gerrit-review-site Bound pvc-6d2c642b-c278-11e8-8679-f4034344e778 6Gi RWX nfs-sc 174d
pvc-6d2c642b-c278-11e8-8679-f4034344e778 6Gi RWX Delete Bound inf/gerrit-var-gerrit-review-site nfs-sc 174d
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