IT hands-on

By adding an ampersand -  & - character to a command, we tell Linux to run it in the background and return to the shell prompt, allowing us to use

To monitor the disk usage for our mounted filesystems, we could use the below command: -h : outputs the results in  human-readable format -<i>  gigabyte or

To check that a USB flash drive was recognized by a Linux system, we use the " lsusb " command: To show the disks and their partition, we could

As I am currently preparing my home lab and I faced some networking issues with an arm64 deployment of Ubuntu and Docker, I now prefer to start from

DNS poisoning changes the HOSTS file - maps hostnames to addresses - . It works by changing an IP addresses to point to a malicious site instead of the

Linux devices - <i> disks, keyboards, terminals, ... </i> - exist as files in the in the " /dev " directory.  Devices can be refered to using their path

Type 2 hypervisors run on an existing - <i> host </i> - operating system The - <i> guest -</i> operating systems running in the virtual machines have access the hardware

Istio uses kubernetes  admission webhooks to add a sidecar into an existing deployment of pods. We start by going into the istio namespace where we want

Istio has a set of pre-defined installation mode to make it easier for us to set up our first services mesh successfully. To see more details about eac

The chmod command helps us change the access permissions for our files.  The permissions of a file look like below: The chmod command can use the the oc

We could use the destination rule parameters to help alleviate bottlenecks and slowness caused by a rise in requests for an application. Some of the pa

When having issues connecting to an application,we could configure the " retry " parameter for the client application requests.  The  number of

Latency could create huge issues, like  bottle necks, slowing down of applications.  To keep that from happening, we can use timeouts for our requests.

To specify a loadbalancing policy for our service " service1 ", ROUND_ROBIN in our case, we use an  istio resource called destinationRule . The  d

Access logging are disabled for istio  default profile.  We could change that by instructing  i stio  to print access logs to the standard output as follow

To secure traffic to our kubernetes cluster we use TLS in conjunction with the HHTP traffic. To enable HTTPS for ingress traffic, we need to specify th