Relay all mail to an external account which can come in handy in your lab environment.
Categories
Category: SysOps
System Operations
Categories
How to log HDFS operations
Perform HDFS audit logging.
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How to create Yarn nodes whitelist
Create Yarn nodes whitelist.
Save namespace on namenode and perform checkpoint on secondary namenode.
Inspect Hadoop configuration using command-line.
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How to mount HDFS as a local file system
Mount HDFS as a local file system.
Categories
How to create Hadoop data nodes whitelist
Create Hadoop data nodes whitelist.
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How to leave Hadoop safe mode
The Hadoop cluster enters safe mode during the name node startup till the basic indicators are met and later in case of emergency, which means that the cluster enters read-only mode.
Keep track of network latency using SmokePing on Debian Bullseye.
Use boot parameters to limit the number of available processors.