aljoscha commented on a change in pull request #7702:
[FLINK-11088][Security][YARN] Allow YARN to discover pre-installed keytab files
URL: https://github.com/apache/flink/pull/7702#discussion_r390328116
##########
File path:
flink-yarn/src/main/java/org/apache/flink/yarn/YarnClusterDescriptor.java
##########
@@ -887,20 +887,28 @@ private ApplicationReport startAppMaster(
}
}
- // setup security tokens
Path remotePathKeytab = null;
+ String localizedKeytabPath = null;
String keytab =
configuration.getString(SecurityOptions.KERBEROS_LOGIN_KEYTAB);
if (keytab != null) {
- LOG.info("Adding keytab {} to the AM container local
resource bucket", keytab);
- remotePathKeytab = setupSingleLocalResource(
- Utils.KEYTAB_FILE_NAME,
+ boolean requireLocalizedKeytab =
flinkConfiguration.getBoolean(YarnConfigOptions.SHIP_LOCAL_KEYTAB);
+ localizedKeytabPath =
flinkConfiguration.getString(YarnConfigOptions.LOCALIZED_KEYTAB_PATH);
+ if (requireLocalizedKeytab) {
+ // Localize the keytab to YARN containers via
local resource.
+ LOG.info("Adding keytab {} to the AM container
local resource bucket", keytab);
+ remotePathKeytab = setupSingleLocalResource(
+ localizedKeytabPath,
fs,
appId,
new Path(keytab),
localResources,
homeDir,
"",
fileReplication);
+ } else {
Review comment:
Aren't we doing duplicate work here? If we don't have a local keytab and we
don't ship it, won't the configuration be already in place and the cluster
entrypoint can use it?
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