flink 1.11 on kubernetes 构建失败

按照文档[1]的方法部署session cluster on kubernetes，集群构建的时候出现了如下报错

Starting Task Manager sed: couldn't open temporary file /opt/flink/conf/sedVdyy6Q: Read-only file system sed: couldn't open temporary file /opt/flink/conf/sedcj5VKQ: Read-only file system /docker-entrypoint.sh: 72: /docker-entrypoint.sh: cannot create /opt/flink/conf/flink-conf.yaml: Permission denied sed: couldn't open temporary file /opt/flink/conf/sedB5eynR: Read-only file system /docker-entrypoint.sh: 120: /docker-entrypoint.sh: cannot create /opt/flink/conf/flink-conf.yaml.tmp: Read-only file system [ERROR] The execution result is empty. [ERROR] Could not get JVM parameters and dynamic configurations properly.

是否有遇到同样的问题，支个招

[1] https://ci.apache.org/projects/flink/flink-docs-release-1.11/ops/deployment/kubernetes.html#session-cluster-resource-definitions

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