jlpedrosa commented on issue #24962: [SPARK-28149][K8S] Added variable to disable negative DNS caching URL: https://github.com/apache/spark/pull/24962#issuecomment-515020132 Hi @vanzin @erikerlandson I've tested the approach suggested and it works, the process is a bit cumbersome for the user. So it is a question of usability, 1) Create docker spark images (generic ones, in my case I used master) 2) Create a modified version of the java security file. 3) Push the config map to k8s 4) Create a template that contains the volumes and the mounts 5) Create custom spark images based on 1) including 2) (-java.security.properties can be only mounted from local.) 6) Run spark submit using the images on 5) and using 4) as a template: ``` --conf spark.kubernetes.driver.podTemplateFile=....vtemplate.yaml \ --conf 'spark.driver.extraJavaOptions=-Djava.security.properties=/etc/config_mount/jvm.java.security' ``` sample template: ``` spec: containers: - volumeMounts: - name: config-volume mountPath: /etc/config_mount volumes: - name: config-volume configMap: name: jvm-opts-no-dns-caching ```
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