IT hands-on

We create an custom iterator function that we will use with a " for " loop: We use it as below: The " yield " function acts as a return

The below example reads input from the " /home/albert/file " file and prints it: We use " StopIteration " exception to exit a loop so i

Iterables  are objects that we can loop through, like - <i> lists, tuples, sets, dictionaries, strings, ... </i> -. We have the below list with different member

We have the below list  composed of pairs, we list it using the below: We could also list the pairs as below: We could also list all the elements of the  l

Injection of  sidecar  in a  kubernetes  application, means that  istio  is going to modify the deployment's  Yaml  file of our  pods  to include a  side car

When using a  bash  script, we could have "replacement" default arguments if none are given. Our example replaces the " $1 " with repla

Istio  provides  loadbalancing  for  kubernetes . It also supports  retries  for failing  pods  and  circuit breaking  to reject requests for  pods  with a " de

Istio  allows us to set routing rules that dictates how traffic flows to our  pods . For that purpose  Istio  uses  DestinationRules  and  VirtualServices . The

The below diagram represents the scaling down of a  statefulset  named  db1 : Before scaling down our  statefulset , we check the pods and we see that there

We can inject a sidecar proxy in a running deployment of pods . Envoy is the default proxy for Istio . Below is a diagram that shows an injected  Envoy  contai

We start by checking if the ssh server is installed on the managed machine : Then we check its status, to see if the ssh  process is running and ready fo

Beside the default storage pool created when KVM is installed on, we could set up our directory-based storage . We will start by defining a storage pool