Protected: Kubernetes: Deploy a 3 node cluster
There is no excerpt because this is a protected post.
Read MoreDevOps
Kubernetes: ClusterIP
The ClusterIP is one of the three services in Kubernetes. When creating a manifest file in yaml format if the kind is service, and no type is mentioned, Kubernetes assumes that it will be ClusterIP by default. Let us…
Kubernetes: Service : NodePort
The NodePort is one of the three services in Kubernetes. When a pod is deployed with a container, the worker node in which the pod gets deployed has an IP accessible from the master node, etc and…
Kubernetes: Apps and pods
A Pod is the smallest deployable units of computing in a Kubernetes environment. A pod can host just one application (container) or several. Let us see if there are any pods running in the default…
Kubernetes: NameSpace
The namespaces in Kubernetes provides a way for separating groups of resources hosted within a single cluster. While the default namespace where all the pods and applications get hosted is in the “default” namespace, the…
Kubernetes: Basic commands
Once the installation of Kubernetes cluster is competed, let us go with the basic commands. The below command lists the pods running on the cluster. Remember that there are several services used by Kubernetes already…
Ansible: The copy module
The module ansible.builtin.copy enables users to copy files from the controller node to managed nodes. It also helps to add/modify a destination file with a specific content. In the below example we use three groups in…
Ansible: Download a file from website and replace value
In this post we are going to see how we can use the below two modules to download a file from a URL or and FTP server to the managed nodes, and replace certain content…
Ansible: Roles and Modules from Content Collections
The Content Collection is a set of related roles, supplementary modules, and other content. This can be obtained from an Ansible Content Collection and can be used in playbook. The default path where collections are usually downloaded…
Ansible: Adding a YUM or DNF repository
A yum or dnf repository can be added to managed nodes using Ansible. This is done using the ansible builtin yum_repository module. Basics of creating yum repositories can be found at this link. Below playbook…