Categories
SysOps

How to relay all mail to external account

Relay all mail to an external account which can come in handy in your lab environment.

Categories
SecOps

How to protect Samba DNS server against DNS zone transfer

Debian Bullseye currently provides Samba 4.13.5. Using BIND as Samba Active Directory DNS backend opens it to the DNS zone transfer.

Categories
DailyOps

How to pretty-print text files inside terminal

Pretty-print text files inside terminal using bat a cat clone with syntax highlighting and Git integration.

Categories
SysOps

How to install SmokePing on Debian Bullseye

Keep track of network latency using SmokePing on Debian Bullseye.

Categories
SysOps

How to limit the number of available processors

Use boot parameters to limit the number of available processors.

Categories
SysOps

How to install DNS lookup utility

Install DNS lookup utility to perform basic DNS lookups.

Categories
DevOps

How to install Cluster Manager for Apache Kafka

Install Cluster Manager for Apache Kafka, previously known as Kafka Manager on Debian Bullseye.

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 display IP address in a more readable format

Display IP address in a more readable format.

Categories
SysOps

How to create Hadoop cluster

Create a basic Hadoop cluster to play with it.