7.3. 配置 Spring Boot Narayana 恢复控制器

流程

1. 这是一个 application.properties 文件示例。替换 Kubernetes yaml 描述符中的以下选项。

   # Cluster
   cluster.nodename=1
   cluster.base-dir=./target/tx
   
   # Transaction Data
   spring.jta.transaction-manager-id=${cluster.nodename}
   spring.jta.log-dir=${cluster.base-dir}/store/${cluster.nodename}
   
   # Narayana recovery settings
   snowdrop.narayana.openshift.recovery.enabled=true
   snowdrop.narayana.openshift.recovery.current-pod-name=${cluster.nodename}
   # You must enable resource filtering in order to inject the Maven artifactId
   snowdrop.narayana.openshift.recovery.statefulset=${project.artifactId}
   snowdrop.narayana.openshift.recovery.status-dir=${cluster.base-dir}/status

2. 您需要一个共享卷来存储与终止相关的事务和信息。它可以挂载到 StatefulSet yaml 描述符中，如下所示。

   apiVersion: apps/v1beta1
   kind: StatefulSet
   #...
   spec:
   #...
     template:
   #...
       spec:
         containers:
         - env:
           - name: CLUSTER_BASE_DIR
             value: /var/transaction/data
             # Override CLUSTER_NODENAME with Kubernetes Downward API (to use `pod-0`, `pod-1` etc. as tx manager id)
           - name: CLUSTER_NODENAME
             valueFrom:
               fieldRef:
                 apiVersion: v1
                 fieldPath: metadata.name
   #...
           volumeMounts:
           - mountPath: /var/transaction/data
             name: the-name-of-the-shared-volume
   #...