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Kubernetes Course

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  KUBERNETES What are containers Before we dive into Container Orchestration, let's review first what containers are. Containers are an application-centric way to deliver high-performing, scalable applications on the infrastructure of your choice. With a container image, we bundle the application along with its runtime and dependencies. We use that image to create an isolated executable environment, also known as  container . We can deploy containers from a given image on the platform of our choice, such as desktops, VMs, Cloud, etc. Container Orchestration ? In Development and Quality Assurance (QA) environments, we can get away with running containers on a single host to develop and test applications. However, when we go to production, we do not have the same liberty, as we need to ensure that our  applications: Are fault-tolerant Can scale, and do this on-demand Use resources optimally Can discover other applications automatically, and c...
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Jenkins Mac Slave Communication Setup

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Jenkins Slave (Mac) Setup:- Go to Manage Jenkins and Select Manage Nodes Click on New Node Give the node name Give the executors Give the Remote Root Directory Specify a label name, For example: any custom name Select the launch method as: Launch agent via Java Web Start Click on Save, once done with above steps. Below the output, we see once after saving the changes. To start Mac Slave communication for Jenkins server Create a script for running the java JNLP from slave machine using the below content mentioned in the box. java -jar /Users/ssp/Downloads/slave.jar -jnlpUrl http://13.126.145.70:8080/computer/MacSlave/slave-agent.jnlp -secret 4c0a0370a9e9a46edfe939ccab0e9f4707715bd663587ab8c9e8e17287c1cf4c -workDir "/Users/ssp/jenkins"   Put the above content in a script (ex: - Mac_Slave_On.sh) Give executable permissions to the script (ex: - chmod +x jenkins_slave.sh) Now To m...
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Install Kubernetes with Kubeadm

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Step: 1 Ø   Login to AWS and launch 3 EC2 Instances (Master and 2 Nodes) Ø   EC2 might be any Ubuntu/fedora/Rhel OS Step: 2 Ø   Add kube-master in  /etc/hostname file and in Master instance Ø   Add kube-node1 in  /etc/hostname file and in Node-1 instance Ø   Add kube-node2 in  /etc/hostname file and in Node-2 instance Ø   Add the below 3 lines in all the three servers (Master, Node1, Node2) in /etc/hosts file <master-Pvt-Ip-Addr> kube-master <master-Pvt-Ip-Addr> kube-node1 
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