Categories
SysOps

How to decommission HDFS datanode

Decommission HDFS data node with minimal impact on the running applications.

Categories
SysOps

How to create LXD image from an existing snapshot

Create LXD image from an existing snapshot.

Categories
SysOps

How to display Hadoop cluster report

Display Hadoop cluster report.

Categories
SysOps

How to disable Pi-hole query rate-limiting

Disable Pi-hole query rate-limiting in a local lab as rate-limited queries get a REFUSED reply and are not further processed by FTL.

Categories
SysOps

How to install DNS lookup utility

Install DNS lookup utility to perform basic DNS lookups.

Categories
SysOps

How to load native Hadoop libraries

Hadoop has a native implementation for certain components, but sometimes it does not load automatically.

Categories
SysOps

How to update Hadoop heartbeat interval

Update Hadoop heartbeat interval to mark data node as dead at the predefined period of time depending on your requirement.

Categories
SysOps

How to perform reverse DNS lookups

Perform reverse DNS lookups to map addresses to names.

Categories
SysOps

How to validate Hadoop configuration files

Validate Hadoop configuration XML files.

Categories
SysOps

How to determine which SSH public key was uploaded to the web service

Determine which SSH public key was uploaded to the web service.