How to overwrite Existing AWS EC2 AMI with Packer?
USING FORCE_DEREGISTER ADDED IN V1.1.2, IT WAS VERIFIED WHETHER AWS EC2 AMI CAN BE OVERWRITTEN. THE PROCESS IS TO DELETE THE AMI WITH THE SAME NAME AND…
Create AWS AMI policy, IAMgGroup and IAM user for Hashicorp Packer
This tutorails helps you to create a AWS AMI policy, IAMgGroup and IAM user for Hashicorp Packer execution so Packer should get only needed access than all….
Installing uDeploy Server 6.X in linux rhel 7.5
Install and Setup JDK 8 and JAVA HOME Install and Setup uDeploy Server 6.X How to start / Stop uDeploy server? Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate…
EKS cluster setup error: the server doesn’t have a resource type “services
When an Amazon EKS cluster is created, the IAM entity (user or role) that creates the cluster is added to the Kubernetes RBAC authorization table as the…
How to destroy one specific resource from TF file in Terraform?
Terraform destroy is a command that allows you to destroy either a full stack (based on your TF files), or single resources, using the -target option. You…
Continuous integration using Bamboo – Crash Course – 1 Day
Following are the agenda which, I am going to cover in next week session for continuous integration using Bamboo – Crash Course – 1 Day. Introduction of…
Working with Kubernetes Cluster using Kubectl Part – 11 – Probes
container-probes.yaml Commands Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories…
Working with Kubernetes Cluster using Kubectl Part – 10 – Pods Life Cycle
pod-restart-policy.yaml Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at…
Working with Kubernetes Cluster using Kubectl Part – 9 – Multi Containers Pods
multicontainer-pod.yaml Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at…
Working with Kubernetes Cluster using Kubectl Part – 7 – Labels
PodsToNodes.yaml CreatePodsWithLabels.yaml deployment-label.yaml service.yaml Commands Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps…
Working with Kubernetes Pods & Deployment
deployment.yaml pod.yaml Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories…
Kubernetes Commands: kubectl api-versions – Tutorials and Examples
deployment.yaml Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at…
Kubernetes Commands: kubectl api-resources – Tutorials and Examples
POD.yaml Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at…
Kubernetes Commands: kubectl run – Tutorials and Examples
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Kubernetes Commands: kubectl get – Tutorials and Examples
Listing and Inspecting your cluster, pods, services and more. kubectl cluster-info review status and roles kubectl get nodes Additional information about each node in the cluster. kubectl…
Setup Kubernetes Cluster using kubeadm, calico and rbac in Ubuntu
Prerequisite Setup Master Node Setup aka Kubernetes Control Panel Setup Worker Node Setup Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked…
Create Google Kubernetes Engine(GKE) Cluster using command line
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Create Azure kubernetes Clustors(AKS) using command line
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Kubernetes volume hostPath explained with examples
The hostPath volume mounts a resource from the host node filesystem. the resources could be directory, file socket, character, or block device. These resources mu A hostPath…
Kubernetes volume emptyDir explained with examples
Here are the following facts for emptyDir storage type in Kubernetes An emptyDir volume is first created when a Pod is assigned to a Node and initially…
Working with multiple virtual Kubernetes clusters aka Namespaces
Kubernetes supports multiple virtual clusters backed by the same physical cluster. These virtual clusters are called namespaces. Namespaces ca be used in multiple environment with many users…
minikube error – VBoxManage.exe: error: DHCP server already exists
Error Message Solutions minikube stop minikube start Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog…
minikube error – CrashLoopBackOff: secrets is forbidden: User “system:serviceaccount:kube-system:default”
$ minikube dashboard Temporary Error: unexpected response code: 503 Temporary Error: unexpected response code: 503 Temporary Error: unexpected response code: 503 Temporary Error: unexpected response code: 503…
How to check Containers readiness inside a pod using readinessProbe?
A Probe is a diagnostic performed periodically by the kubelet on a Container. To perform a diagnostic, the kubelet calls a Handler implemented by the Container. There…
How to check Containers health inside a kubernetes pod using livenessProbe?
A Probe is a diagnostic performed periodically by the kubelet on a Container. To perform a diagnostic, the kubelet calls a Handler implemented by the Container. There…
How to enable Elastic Search REST API Accessible using IP Address?
By default http transport and internal elasticsearch transport only listens to localhost. If you want to access Elasticsearch from the host other than localhost then try adding…
Ansible Playbook Lab & Excercise – Part 7
Create a playbook where you should install a webserver into 2 OS type(Ubuntu and RHEL) with fact conditioning. and list out a directory which in “/etc” and…
Ansible Windows Playbook Lab & Excercise – Part 8
Write a playbook to Create a dir, named with your-name inside C:\HPE and create a file named with “readme.txt” inside “C:\HPE\ and content of the file should…
Ansible Windows Adhoc Commands Lab & Excercise – Part 2
Write a Adhoc command to Create a dir, named with your-name inside C:\HPE and create a file named with “readme.txt” inside “C:\HPE\ and content of the file…
How to install Ansible in Centos 7/RHEL 7?
How to install Ansible in Centos 7/RHEL 7? Install Ansible via Pip in RHEL/CENTOS Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have…