kubernetes 集群内部署 单节点 mysql
ansible all -m shell -a "mkdir -p /mnt/mysql/data"
cat mysql-pv-pvc.yaml
apiVersion: v1
kind: PersistentVolume
metadata:
name: mysql-pv-volume
labels:
type: local
spec:
storageClassName: manual
capacity:
storage: 5Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/mnt/mysql/data"
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: mysql-pv-claim
spec:
storageClassName: manual
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 5Gi
cat mysql-deploy.yaml
apiVersion: v1
kind: Service
metadata:
name: mysql
spec:
type: NodePort
ports:
- port: 3306
nodePort: 30006
targetPort: 3306
protocol: TCP
selector:
app: mysql
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: mysql
spec:
selector:
matchLabels:
app: mysql
strategy:
type: Recreate
template:
metadata:
labels:
app: mysql
spec:
containers:
- image: mysql:5.7
name: mysql
env:
# Use secret in real usage
- name: MYSQL_ROOT_PASSWORD
value: password
ports:
- containerPort: 3306
name: mysql
volumeMounts:
- name: mysql-persistent-storage
mountPath: /var/lib/mysql
volumes:
- name: mysql-persistent-storage
persistentVolumeClaim:
claimName: mysql-pv-claim
start:
kubectl apply -f mysql-pv-pvc.yaml
kubectl apply -f mysql-deploy.yaml
check
[root@kube-master01 mysql]# kubectl get pod
NAME READY STATUS RESTARTS AGE
mysql-794c6d56c6-xnfhb 1/1 Running 0 10h
[root@kube-master01 mysql]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.43.0.1 <none> 443/TCP 23d
mysql NodePort 10.43.17.172 <none> 3306:30006/TCP 10h
mysql NodePort 10.43.17.172 <none> 3306:30006/TCP 10h
[root@kube-master01 mysql]# mysql -h 192.168.23.31 -P 30006 -u root -p'password'
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 15
Server version: 5.7.43 MySQL Community Server (GPL)
Copyright (c) 2000, 2023, Oracle and/or its affiliates.
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> show databases
-> ;
+--------------------+
| Database |
+--------------------+
| information_schema |
| clusterpedia |
| mysql |
| performance_schema |
| sys |
+--------------------+
5 rows in set (0.05 sec)
mysql>
在kube-node01 创建目录/mnt/mysql/data
mkdir -p /mnt/mysql/data
创建 pv & pvc
$ vim mysql-pv-pvc.yaml
apiVersion: v1
kind: PersistentVolume
metadata:
name: mysql-pv-volume
labels:
type: local
spec:
nodeAffinity:
required:
nodeSelectorTerms:
- matchExpressions:
- key: mysql.standalone.node
operator: In
values:
- enable
storageClassName: manual
capacity:
storage: 5Gi
accessModes:
- ReadWriteOnce
hostPath:
path: "/mnt/mysql/data"
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: mysql-pv-claim
namespace: mysql
spec:
storageClassName: manual
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 5Gi
创建 statefulset
$ vim mysql-deploy.yaml
apiVersion: v1
kind: Service
metadata:
name: mysql
namespace: mysql
spec:
type: NodePort
ports:
- port: 3306
nodePort: 30006
targetPort: 3306
protocol: TCP
selector:
app: mysql
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: mysql
namespace: mysql
spec:
selector:
matchLabels:
app: mysql
template:
metadata:
labels:
app: mysql
spec:
affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: mysql.standalone.node
operator: In
values:
- enable
containers:
- image: mysql:5.7
name: mysql
env:
# Use secret in real usage
- name: MYSQL_ROOT_PASSWORD
value: password
ports:
- containerPort: 3306
name: mysql
volumeMounts:
- name: mysql-persistent-storage
mountPath: /var/lib/mysql
volumes:
- name: mysql-persistent-storage
persistentVolumeClaim:
claimName: mysql-pv-claim
执行：
kubectl apply -f mysql-pv-pvc.yaml
kubectl apply -f mysql-deploy.yaml
检查
$ kubectl get all -n mysql
NAME READY STATUS RESTARTS AGE
pod/mysql-0 1/1 Running 0 5m16s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/mysql NodePort 10.102.59.69 <none> 3306:30006/TCP 4m47s
NAME READY AGE
statefulset.apps/mysql 1/1 5m16s
连接 mysql
[root@kube-master01 mysql-yaml]# mysql -h 192.168.23.21 -u root -P 30006 -p'password'
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.36 MySQL Community Server (GPL)
Copyright (c) 2000, 2023, Oracle and/or its affiliates.
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> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.01 sec)
参考：