Linux 101 : Systemd timers - the "cron" of systemd -

Systemd timers are the equivalent of the well-known " cron " program for scheduling tasks and programs. To view the list of timer...

Redis 101 : A basic introduction to Redis - Remote Dictionary In memory Server -

The redis database: Redis - remote dictionary in memory server - is a database that lives in memory. Because the data is stored in memory, i...

Linux 101 : Network layers and their respective troubleshooting tools - ip link, traceroute, nslookup, ... -

Below is a simplified diagram of the different network layers: To get information about the link layer - Hardware - , we would use the below...

Kubernetes 101 : Random useful Docker and Kubernetes commands

To limit the use of CPU -150m-  and memory -1024-  resources of an " nginx " container , we could use the below command for examp...

Kubernetes 101 : Which deployment controls which pods - Getting acquainted with a cluster -

When working in a cluster that we didn't setup, we sometimes will need information about replicaSets  and deployments  to scale down/up ...

Linux 101 : UDEV, the device manager

The udev software handles the the naming and the configuration of devices on Linux systems. Udev is managed by systemd . It also handles loa...

Linux 101 : Useful "systemctl" commands - Unit, Unit files, Targets -

Units and unit files: Units represent services and system resources - s ockets, devices, mounts, ... - Unit files represent the configura...

Linux 101 : How to make sure the network is available before starting a service

Among other things, Systemd also handles the network and network-online target units.  The  Target units define different states of the op...

Linux 101 : The Network Manager - Setting a dynamic IP address using nmcli -

We start by creating a new connection " Dynamic connection " using the below command: Then we set the interface the connection &q...