Blog it

 Policy development process course

  For Routing Basics Course For Policy Development Process Course

 Routing Basics 1.Router and it's functions Router : a networking device that discovers network topologies and forwarding packets Routing is like building maps and giving directions. It has to learn about the details of the potential destinations. So it collects information, which can be static, manual or dynamic.  Router has two main functions  -  Routing : Learn about the network through it's neighbours  -  Forwarding : Packet is forwarded between routers until it reaches it's destination 2. Router Architecture  -  IP routing table : a data table stored on a router mapping the surrounded network topology and routers.  -  IP forwarding table : a data table on network switches that uses MAC addresses to map the proper interface to which packet should be forwarded. 3. Routing protocol Basics  - Static routes Routes are configured by administrators There is a special route called default route. It is used to route packets that are not...

Workshop on Network/systems monitoring was organised by LEARN which was streamed as an online workshop through Zoom. As my responsibilities as an instructor in the workshop, Icinga installation explanation was done in Ubuntu and a script for the installation was provided to the participants. The workshop was organised under 6 sessions. The agenda, materials and the recorded videos can be found with the following link: https://ws.learn.ac.lk/wiki/NSM2021/Agenda

 I participated to an online workshop about understanding Kubernetes which was announced on linkedIn. And the certificate for the participation I received, is attached on the blogpost for your motivation  Event link : https://www.linkedin.com/events/kubernetes-freetechnicalworksho6807993779836985344/

 I am having some lecture series on mindfulness in Udemy and hope sharing some points here will not hurt the flow in the blog.  To Be Continued.....✌🏻

First, let’s get some basic understanding: Kubernetes is an open-source container-orchestration system for automating computer application deployment, scaling, and management. It was originally designed by Google and is now maintained by the Cloud Native Computing Foundation. Here the simple idea of words we are going to use, containers : lightweight docker images running in(docker images are lightweight because it has no kernel) lets say the container is down, that means there is no management for the service(if that docker container has a service), then that is why Kubernetes comes to the picture Pod : we can have one or multiple containers in a pod. If the pod is running on a network and it is called pod network Master : Who is managing the cluster Worker nodes : where the actual containers are running you will see the nodes in the Kubernetes cluster using following command: kubectl get nodes Let’s create a pod using a test.yml file, here a nginx docker image is g...

I am taking anger management program and I am going to update the blog post and this might be useful to me, also to someone who needs... Session 1 Exercise 1:1 Take a paper and write down the things for the points below.They are asking us to think of a situation we experienced anger, preferable one that no longer effect us in the present 1. During the anger incident, what are the symptoms experienced physically mentally emotionally behaviourally 2. What was your response for the anger symptoms 3. Was your response helpful, and if yes, then in what way was it helpful Exercise 1:2 Is there a method to calculate the anger, yes, there is. Let's see how to calculate the anger. It is used with FITED F - Frequency : Number of times you become angry everyday I - Intensity : This depends on the amount if threat you perceive T - Threshold : How easily you get angry E - Expression : Expression of anger, for example; shouting, or throwing books etc D - Duration : How long will you remain angry...

Network and direct storage types Network Attached Storage (NAS) Storage Area Network (SAN) Direct Attached Network (DAN) Network Attached Storage (NAS)      - Cheaper than SAN      - lowest performance      - attached to file server and network      - current infrastructure Storage Area Network (SAN)      - access over the LAN      - technician needs some kind of knowledge on installing and maintenance      - vendor specific hardware and software      - highest performance      - block level allocation      - configuration setting up time is higher than others Direct Attached Network (DAN)     - Directly attached to the local PCs Protocols used IDE SATA SACI Access and Protocol Ethernet      - typically RJ45 (8 pins) are used   ...

  Ubuntu Repositories  You need to add the Icinga repository to your package management configuration. The following commands must be executed with root permissions unless noted otherwise. apt-get update apt-get -y install apt-transport-https wget gnupg wget -O - https://packages.icinga.com/icinga.key | apt-key add - . /etc/os-release; if [ ! -z ${UBUNTU_CODENAME+x} ]; then DIST="${UBUNTU_CODENAME}"; else DIST="$(lsb_release -c| awk '{print $2}')"; fi; echo "deb https://packages.icinga.com/ubuntu icinga-${DIST} main" > /etc/apt/sources.list.d/${DIST}-icinga.list echo "deb-src https://packages.icinga.com/ubuntu icinga-${DIST} main" >> /etc/apt/sources.list.d/${DIST}-icinga.list apt-get update Installing Icinga 2  The following commands must be executed with root permissions unless noted otherwise. apt-get install icinga2 Setting up Check Plugins  Without plugins Icinga 2 does not know how to check external servic...

As the Service Providers in LIAF - LEARN Identity Access Federation are low, LEARN organised a workshop on how to enable/ implement services with shibboleth installed. Reason for the low amount of SP would be  the technical knowledge of SAML based Service Provider Installation and usage. I was able to do the backend services enabling in LIAF(liaf.ac.lk) for the workshop. Information and the materials can be found with the following link: https://ws.learn.ac.lk/wiki/SamlSP2021/Agenda