创建MySQL密码（Secret ）
Create the Secret object from the following command. You will need to replace YOUR_PASSWORD with the password you want to use.
# vim password.txt # kubectl create secret generic nc-mysql-pass --from-file=password.txt
[root@ec-b nextcloud]# kubectl create secret generic nc-mysql-pass --from-literal=password=YOUR_PASSWORD
[root@ec-b ~]# kubectl get secrets NAME TYPE DATA AGE ...... nc-mysql-pass Opaque 1 7m59s
持久化存储卷 Persistent Volume
[root@ec-b nextcloud]# vi 00-nextcloud-storageClass.yaml
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
name: nextcloud-sc
provisioner: ceph.com/cephfs
parameters:
monitors: 172.16.1.61:6789,172.16.1.62:6789,172.16.0.63:6789
adminId: admin
adminSecretName: ceph-secret-admin
adminSecretNamespace: "kube-system"
#adminSecretNamespace: "default"
claimRoot: /volumes/kubernetes/nextcloud
reclaimPolicy: Retain # pvc移除后，保留数据
[root@ec-b nextcloud]# kubectl create -f nextcloud-storageClass.yaml storageclass.storage.k8s.io/nextcloud-sc created [root@ec-b nextcloud]# kubectl get storageclasses NAME PROVISIONER AGE nextcloud-sc ceph.com/cephfs 2m12s
[root@ec-b nextcloud]# vi 01-nc-mysql-pvc.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: nc-mysql-pv-claim
annotations:
# 动态PVC，绑定,StorageClass
volume.beta.kubernetes.io/storage-class: "nextcloud-sc"
labels:
app: nextcloud
spec:
accessModes:
# - ReadWriteOnce
- ReadWriteMany
resources:
requests:
storage: 10Gi
[root@ec-b nextcloud]# vi 02-nextcloud-pvc.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: nc-pv-claim
annotations:
# 动态PVC，绑定,StorageClass
volume.beta.kubernetes.io/storage-class: "nextcloud-sc"
labels:
app: nextcloud
spec:
accessModes:
#- ReadWriteOnce
- ReadWriteMany
resources:
requests:
storage: 512Gi
[root@ec-b nextcloud]# kubectl create -f 01-nc-mysql-pvc.yaml -f 02-nextcloud-pvc.yaml persistentvolumeclaim/nc-mysql-pv-claim created persistentvolumeclaim/nc-pv-claim created
[root@ec-b nextcloud]# kubectl get pvc NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE nc-mysql-pv-claim Bound pvc-6e19b34c-140f-11e9-967d-080027e83152 10Gi RWX nextcloud-sc 3m nc-pv-claim Bound pvc-bf2a114c-0f06-11e9-ac2c-080027dce69c 512Gi RWX nextcloud-sc 3m
部署 MySQL (Deploy MySQL )
mysql-deployment
[root@ec-b nextcloud]# vi 10-nc-mysql-svc.yaml
apiVersion: v1
kind: Service
metadata:
name: nextcloud-mysql
labels:
app: nextcloud-mysql
component: nextcloud
spec:
ports:
- port: 3306
selector:
app: nextcloud-mysql
component: nextcloud
clusterIP: None
[root@ec-b nextcloud]# vi 11-nc-mysql-deployment.yaml
---
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
name: nextcloud-mysql
labels:
app: nextcloud-mysql
component: nextcloud
spec:
selector:
matchLabels:
app: nextcloud-mysql
component: nextcloud
strategy:
type: Recreate
template:
metadata:
labels:
app: nextcloud-mysql
component: nextcloud
spec:
containers:
- image: mysql:5.7
name: mysql
env:
- name: MYSQL_ROOT_PASSWORD
valueFrom:
secretKeyRef:
name: nc-mysql-pass
key: password
ports:
- containerPort: 3306
name: mysql
volumeMounts:
- name: nc-mysql-persistent-storage
mountPath: /var/lib/mysql
volumes:
- name: nc-mysql-persistent-storage
persistentVolumeClaim:
claimName: nc-mysql-pv-claim
[root@ec-b nextcloud]# kubectl create -f 02-nc-mysql-deployment.yaml -f 11-nc-mysql-deployment.yaml service/nextcloud-mysql created deployment.apps/nextcloud-mysql created
[root@ec-b nextcloud]# vi 12-mysql-client-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: mysql-client
spec:
containers:
- name: mysql-client
image: mysql:5.7
command: ["/bin/sleep"]
args: [ "3600" ]
[root@ec-b nextcloud]# kubectl create -f 12-mysql-client-pod.yaml deployment.apps/nextcloud-mysql created
[root@ec-b nextcloud]# kubectl get pods -o wide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES mysql-client 1/1 Running 0 12m 172.58.247.90 ec-d <none> <none> nextcloud-mysql-f6bf67f4f-p8z9h 1/1 Running 0 18m 172.58.89.224 ec-g <none> <none>
[root@ec-b nextcloud]# kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE nextcloud-mysql ClusterIP None <none> 3306/TCP 19m
[root@ec-b nextcloud]# kubectl exec -it mysql-client /bin/bash root@mysql-client:/#
# 创建数据库、用户、权限等 # create database nextcloud_db; # create user ecuser@'%' identified by 'nextcloud@ec'; # grant all privileges on nextcloud_db.* to ecuser@'%' identified by 'nextcloud@ec'; # flush privileges; root@mysql-client:/# mysql -h nextcloud-mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 4 Server version: 5.7.24 MySQL Community Server (GPL) Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | sys | +--------------------+ 4 rows in set (0.00 sec) mysql> mysql> create database nextcloud_db; Query OK, 1 row affected (0.00 sec) mysql> create user ecuser@'%' identified by 'nextcloud@ec'; Query OK, 0 rows affected (0.00 sec) mysql> grant all privileges on nextcloud_db.* to ecuser@'%' identified by 'nextcloud@ec'; Query OK, 0 rows affected, 1 warning (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | nextcloud_db | | performance_schema | | sys | +--------------------+ 5 rows in set (0.00 sec) mysql> mysql> exit; Bye
3. 部署 NextCloud
[root@ec-b nextcloud]# vi 20-nextcloud-svc.yaml
---
apiVersion: v1
kind: Service
metadata:
name: nextcloud-svc
labels:
component: nextcloud
spec:
ports:
- port: 80
targetPort: 80
selector:
component: nextcloud
app: nextcloud
type: LoadBalancer #NodePort #ClusterIP
[root@ec-b nextcloud]# vi 21-nextcloud-deployment.yaml
---
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
kind: Deployment
metadata:
name: nextcloud
labels:
component: nextcloud
app: nextcloud
spec:
selector:
matchLabels:
component: nextcloud
app: nextcloud
strategy:
type: Recreate
template:
metadata:
labels:
component: nextcloud
app: nextcloud
spec:
containers:
- image: nextcloud:13.0.3-apache
imagePullPolicy: IfNotPresent
name: nextcloud
# MySQL 数据库主机名、数据库名、用户名、密码
env:
- name: MYSQL_HOST
value: nextcloud-mysql:3306
- name: MYSQL_DATABASE
value: nextcloud_db
- name: MYSQL_USER
value: ecuser
- name: MYSQL_PASSWORD
value: nextcloud@ec
ports:
- containerPort: 80
name: nextcloud
volumeMounts:
- name: nextcloud-persistent-storage
mountPath: /var/www/html
volumes:
- name: nextcloud-persistent-storage
persistentVolumeClaim:
claimName: nc-pv-claim
[root@ec-b nextcloud]# kubectl create -f 20-nextcloud-svc.yaml -f 21-nextcloud-deployment.yaml
[root@ec-b nextcloud]# kubectl get svc,pods -o wide NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) service/nextcloud-mysql ClusterIP None <none> 3306/TCP service/nextcloud-svc LoadBalancer 10.86.22.18 10.35.1.238 80:32594/TCP NAME READY STATUS RESTARTS AGE IP NODE pod/nextcloud-7cd5795c6b-7lxrt 1/1 Running 0 2h 172.58.89.226 ec-g pod/nextcloud-mysql-f6bf67f4f-p8z9h 1/1 Running 0 2h 172.58.89.224 ec-g
在浏览器中打开 EXTERNAL-IP，10.35.1.238
自动调整 NextCloud pods 数量。
[root@ec-b nextcloud]# kubectl autoscale deployment nextcloud --min=2 --max=6 horizontalpodautoscaler.autoscaling/nextcloud autoscaled [root@ec-b nextcloud]# [root@ec-b nextcloud]# kubectl get deployment NAME READY UP-TO-DATE AVAILABLE AGE nextcloud 1/1 1 1 46m nextcloud-mysql 1/1 1 1 18h [root@ec-b nextcloud]# kubectl get deployment NAME READY UP-TO-DATE AVAILABLE AGE nextcloud 1/1 1 1 46m nextcloud-mysql 1/1 1 1 18h [root@ec-b nextcloud]# kubectl get pod NAME READY STATUS RESTARTS AGE mysql-client 1/1 Running 18 18h nextcloud-7cd5795c6b-7lxrt 1/1 Running 0 46m nextcloud-7cd5795c6b-cfzrk 1/1 Running 0 9s nextcloud-mysql-f6bf67f4f-p8z9h 1/1 Running 0 18h
# 手动调整 [root@ec-k8s-m1 nextcloud]# kubectl scale --replicas=2 deployment/nextcloud deployment.extensions/nextcloudscaled
参考资料：
https://kubernetes.io/docs/
https://hub.docker.com/_/nextcloud/
mhd
2019年3月14日hi
I really appreciate your effort
but when I deploy storage class as you provide and persistent volume, it does not bouned it’s kept in pending state .. which affects in creating the database for nexcloud , do you have any suggestions on how to solve this problem
e.c.
2019年4月13日You must make the Ceph FS be ready.
http://d0o0bz.cn/2019/01/cephfs-pv-kubernetes/