Yes, it relates to my question. I'm asking about "3. On each node (specified by their fully qualified domain names), create the host and headless principals, and a keytab with each:" I think, this part says, we need to create keytab file for each nodes (for all nodes with NodeManager) and put it in "OS local directory (/etc/security/keytabs)" on each node to launch LLAP daemons. Of course, I can follow this procedure, but if possible, I want to avoid putting the keytab files on OS local directory for our administration reason. As you may know, when we launch HBase with Slider on Yarn, we can put required keytab files to launch HBase components such as HBase Master, RegionServers on hdfs instead of putting keytab files on OS local directory. In this case, we don't need to put the keytab files on OS local directory on each node. Instead, we just need to put keytab file with principals for all nodes on hdfs and configure appConfig.json to make Hbase components use the keytab file on hdfs. So, I'm asking whether we can do the same to launch LLAP daemons or not.
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