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.

Categories
SysOps

How to configure Hadoop topology mapping

Configure Hadoop topology mapping using TXT DNS records.

Categories
SysOps

How to display IP address in a more readable format

Display IP address in a more readable format.

Categories
SysOps

How to perform basic HDFS operations

Let’s perform basic HDFS operations.

Categories
SysOps

How to switch from Dropbear to OpenSSH on DietPi

Switch from Dropbear to OpenSSH on DietPi.

Categories
SysOps

How to display current mappings for encrypted devices

Display current mappings for encrypted devices (LUKS) .

Categories
SysOps

How to open LUKS2 encrypted volume on a low memory device

Open LUKS2 encrypted volume on a low memory device.