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背景

在上一个章节中已经介绍了基本的Flink-Operator安装，但是在实际的数据中台的项目中，用户可能希望看到Flink Operator的运行日志情况，当然这可以通过修改Flink-Operator POD的文件实现卷挂载的形势将日志输出到宿主机器的指定目录下，但是这种办法对数据中台的产品不是特别友好，因此我们需要将Operator服务的日志输出到Kafka Appender中；因此我们需要修改Flink Operator的helm中的values配置文件文件，达成我们的目标.

默认情况下Flink Operator不支持Kafka Appender日志输出，为了支持改能力，需要在flink-operator的镜像编译的时候添加kafka依赖，这里小编是在flink-kubernetes-operator模块的pom.xml文件中添加如下配置

<!--kafka版本信息-->
<properties><kafka-clients.version>2.2.0</kafka-clients.version>
</properties>
...
<!--kafka clients依赖-->
<dependency><groupId>org.apache.kafka</groupId><artifactId>kafka-clients</artifactId><version>${kafka-clients.version}</version>
</dependency>

然后对flink-operator重新进行打包编译，重新发布flink-kubernetes-operator镜像即可

日志采集

可以这么理解flink-operator服务是一个flink 任务提交的客户端，在设计的时候会在提交作业的时候允许用户覆盖log4j-console.properties和log4j-operator.properties配置文件，其中如果用户需要采集k8s作业容器的运行日志可以尝试配置log4j-console.properties配置文件，如果是希望查看flink-operator服务本身的日志需要覆盖log4j-operator.properties配置文件。

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################################################################################---# List of kubernetes namespaces to watch for FlinkDeployment changes, empty means all namespaces.
# When enabled RBAC is only created for said namespaces, otherwise it is done for the cluster scope.
# watchNamespaces: ["flink"]image:repository: ghcr.io/apache/flink-kubernetes-operatorpullPolicy: IfNotPresenttag: "51eeae1"# If image digest is set then it takes precedence and the image tag will be ignored# digest: ""imagePullSecrets: []# Replicas must be 1 unless operator leader election is configured
replicas: 1# Strategy type must be Recreate unless leader election is configured
strategy:type: Recreaterbac:create: true# kubernetes.rest-service.exposed.type: NodePort requires# list permission for nodes at the cluster scope.# Set create to true if you are using NodePort type.nodesRule:create: falseoperatorRole:create: truename: "flink-operator"operatorRoleBinding:create: truename: "flink-operator-role-binding"jobRole