官方部署文件地址：https://www.percona.com/doc/kubernetes-operator-for-pxc/kubernetes.html

一、部署方式

示例在k8s叢集（至少3個節點）中部署Percona XtraDB Cluster叢集

• clone專案

git clone  https://gitee.com/Aaron-23/percona-xtradb-cluster-operator.git
cd percona-xtradb-cluster-operator

• 準備儲存

當前環境具有三個k8s node節點，每個node節點/var/lib/data目錄有100GB儲存空間

所有儲存均使用本地儲存

建立local-storageclass

cd storage
kubectl create -f local-sc.yaml

建立pv

修改values值為各pxc節點ip,spec.local.path路徑根據實際情況自定義，

kubectl create -f pv-data-172.yaml
kubectl create -f pv-data-173.yaml
kubectl create -f pv-data-174.yaml

• 建立crd資源

 kubectl apply -f deploy/crd.yaml

• 建立ns

 kubectl create namespace pxc
 kubectl config set-context $(kubectl config current-context) --namespace=pxc
 

• 賦予rbac許可權

kubectl apply -f deploy/rbac.yaml

• 在Kubernetes中啟動operator

kubectl apply -f deploy/operator.yaml

• 使用secrets.管理Percona XtraDB叢集相關祕鑰

需要設定資料庫密碼的修改secrets中密碼即可

 kubectl create -f deploy/secrets.yaml

• 建立Percona XtraDB Cluster

kubectl apply -f deploy/cr.yaml

建立過程將花費一些時間。當po和副本數都達到“Running”狀態時，該過程結束：

$ kubectl get pods
NAME                                              READY   STATUS    RESTARTS   AGE
cluster1-haproxy-0                                1/1     Running   0          5m
cluster1-haproxy-1                                1/1     Running   0          5m
cluster1-haproxy-2                                1/1     Running   0          5m
cluster1-pxc-0                                    1/1     Running   0          5m
cluster1-pxc-1                                    1/1     Running   0          4m
cluster1-pxc-2                                    1/1     Running   0          2m
percona-xtradb-cluster-operator-dc67778fd-qtspz   1/1     Running   0          6m

• 檢查與新建立叢集的連線

 $ kubectl run -i --rm --tty percona-client --image=percona:8.0 --restart=Never -- bash -il
percona-client:/$ mysql -h cluster1-haproxy -uroot -proot_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 1976
Server version: 8.0.19-10 Percona XtraDB Cluster (GPL), Release rel10, Revision 727f180, WSREP version 26.4.3

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