Information Technology

How to Install, Configure, and Deploy NGINX on a Kubernetes Cluster   [root@kubemaster k8s]# kubectl get nodes NAME STATUS ROLES AGE VERSION kubemaster.cloud.local Ready master 34d v1.16.3-k3s.2 kubeworker.cloud.local Ready <none> 34d v1.16.3-k3s.2 Create a Deployment ~/nginx.yaml 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 apiVersion : apps/v1 kind : Deployment metadata : name : nginx-server labels : app : nginx spec : replicas : 1 selector : matchLabels : app : nginx template : metadata : labels : app : nginx spec : containers : - name : nginx image : nginx : 1.13 -alpine ports : - containerPort : 80 [root@kubemaster k8s]# kubectl create -f nginx.yaml --record deployment.apps/nginx-server created List your deployments: root@kubemaster k8s]# kubectl get deployments ...

Create micro service by IBM Cloud Kubernetes Services [root@kube online_banking_ui]# cat Dockerfile FROM mhart/alpine-node:11 AS builder WORKDIR /app COPY . . RUN npm install RUN npm run-script build FROM mhart/alpine-node RUN yarn global add serve WORKDIR /app COPY --from=builder /app/build . CMD ["serve", "-p", "80", "-s", "."] #  Build Images in IBM Cloud Register [root@kube online_banking_ui]# ibmcloud cr build -t us.icr.io/ahmed-workshop/onlineing-banking-ui . latest: digest: sha256:0740ebd71c52e92550696aefc5741d85414c865df77913543885c98153683907 size: 1367 OK # List images: [root@kube online_banking_ui]# ibmcloud cr images Listing images... Repository Tag Digest Namespace Created Size Security status us.icr.io/ahmed-workshop/onlineing-banking-ui latest 0740ebd71c52 ahmed-workshop 21 minutes ago 44 MB No Issues OK # Create...

Create a 2-node k3s cluster with k3sup Kubenetes-Master   = 192.168.17.5 Kubenetes-Worker  = 192.168.17.6 k3sup machine        = 192.168.1.131 !!!  Allow ssh access between k3sup  & two nodes of kubernetes       and between two nodes of kubernetes. !!!  Install K3SUP: [root@devops ~]# curl -sLSf https://get.k3sup.dev | sh which: no k3sup in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin) x86_64 Downloading package https://github.com/alexellis/k3sup/releases/download/0.3.0/k3sup as /tmp/k3sup Download complete. Running as root - Attempting to move k3sup to /usr/local/bin New version of k3sup installed to /usr/local/bin _ _____ | | _|___ / ___ _ _ _ __ | |/ / |_ \/ __| | | | '_ \ | < ___) \__ \ |_| | |_) | |_|\_\____/|___/\__,_| .__/ |_| Version: 0.3.0 Git Commit: 7d954414def98c52ae1f6de08ac5317e4260e673 [root@devops ~]# !!!...

     What is Podman? Podman is a daemonless container engine for developing, managing, and running OCI Containers on your Linux System. Example:  1- Deploy Apache web server on podman:  2- Create volume persistent and join  with podman.  3- Test web server access.  4- Change index.html and reload podman  5- Test changed. 6-  use  podman as system services. [root@podman ~]#   mkdir -p /opt/var/www/html  [root@podman ~]#  cd /opt/var/www/html  [root@podman html]# wget --page-requisites --convert-links https://registry.fedoraproject.org/  [root@podman html]#  chown 1001 -R /opt/var  [root@podman ~]#    mkdir -p /opt/var/www/html  Create podman with local volume persistent: [root@podman html]#  podman run -d --name myhttpservice -p 8080:8080 -v                            ...

                             Network Automation Using Genie/PyATS Create testbed yaml file: devices:     IOSv-L2-1:         type: "IOSv"         os: "ios"         alias: ios-1         tacacs:             login_prompt: 'login:'             password_prompt: 'Password:'             username: admin         passwords:             tacacs: cisco             enable: cisco        ...