Tips and Tricks to use Kubernetes
Origin of Kubernetes
Kubernetes is a project of Google that was launched in the year 2014. The origin of this name is from Greek which means helmsman or pilot. Kubernetes is an open platform that is portable and extensible. It allows managing a pile of workloads and services by easing both declarative configuration and automation. Kubernetes tools and support systems are widely used across the globe because it has an extensively huge ecosystem.
Tips and Tricks for Kubernetes
The growing number of workloads has become a challenge for enterprises to manage. Keeping this issue into consideration, companies are gradually moving towards Kubernetes. Over the years, Kubernetes has extended its impact on clients, customers, and staff, but still, companies fail to take full advantage of it. Here are the top 10 tricks through which you can take full benefit of Kubernetes.
Autocomplete Commands
Kubernetes requires users to manually type the commands. However, with the kubectl commands, users can now autocomplete the command. The autocompletion feature is considered best for long entries. Just by adding the autocompletion to the bashrc, the autocompletion of commands will start automatically.
Setting Limit
Setting a default memory limit and CPU limit to namespaces minimizes the possibilities of memory leak and node crashing. Allocating a default limit must be based on per namespace. Kubernetes allows its users to create YAML for setting a limit. The YAML is created and added to the chosen namespace. Once this is applied, a specific limit is set to the container used on the namespace.
Clearing Docker Pictures
Kubernetes enables users to free up their disk space by revealing them to a default process of cleaning up the docker images once the capacity of var, lib, or docker has reached up to 90%. The versions of Kubernetes from 1.7 to onwards automatically starts cleaning the storage; however, versions before 1.7 requires to add a flag to the kubelet for the user by adding a command.
Minikube for Local Deployments
Running a Kubernetes cluster locally is a challenge. However, with Minikube, it becomes easier. Users need to download and install Minikube and give a command to run the application. It helps in developing an application and running it locally. Another benefit of Minikube is that it allows pushing the docker images to the Kubernetes cluster.
Controlling Kubetcl Access
Kubernetes is suited for various teams deploying to one cluster. However, companies should restrict access to generic Kubetcl to everyone. It is best to categorize the teams on the base of namespace and provide access according to role-based access control policy. Arrange the facility of access to secret admins so you can distinguish among administrator and deployment rights of a cluster.
Pod Disruption Budgets
The pod disruption budget is an ultimate solution for zero downtime for an app on a Kubernetes cluster. The PDB’s are essential for deployment as it updates the cluster and drains out the nodes. Users can easily create PDB by applying YAML to the cluster. The PDB allows better control over the cluster. There are two significant things in PDB; miniAvailable and matchLabels section. MiniAvaiable allows recognizing a node drain whereas, matchLabels enables Kubernetes to understand the adjunct of a deployment to the pod disruption budget.
The Use of Probes
It is necessary to check the health of an app, and Kubernetes gives access to the use of probes. The kubelet use probe to regulate the strength of the application and the pod. There are two types of probes; readiness and liveliness. The readiness probe is used to control the status of the container to manage received traffic. The liveliness probe helps in detecting the strength of the container and restarting it.
The Use of Labels
The use of labels in Kubernetes is wide. These labels help in interconnecting the objects. Moreover, it also a query on the base of labels. The Go client Kubernetes is perfect for watching the events based on labels. These labels help in accomplishing various purposes.
Kubernetes Go Client
The Kubernetes Go client offers many benefits to the users. The go client comprises several interesting features in the store, such as the cleanup app, data collection engine, and deployment engine. The Go client is best for creating a customized Kubernetes.
Daily Clean up
Users frequently face low storage trouble with Kubernetes. Even though the kubelet is renowned for its scalability but with specific services, it scales to millions causing it to be stressed. Henceforth, it is necessary to clean up and delete deployment daily.
Kubernetes Training with QuickStart
Even though we have listed the full-fledge uses of Kubernetes, implementation can still pose a challenge. To enable these uses, it is necessary to provide a kubelet with a command. With a number of uses of the Kubernetes, there are countless complexities associated too. Henceforth, to easily manage those complexities, it is required for companies to train their employees with QuickStart. QuickStart offers many training and certifications related to Kubernetes. Some of Kubernetes training are listed below.
- Kubernetes Administration
- Kubernetes for App Developers
- Kubernetes for Developers
- Kubernetes Fundamentals
- Containers, Kubernetes and Red Hat OpenShift Administration
- Kubernetes for Developers
- Top 12 Security Practices of Kubernetes for 2020
- Introduction to Containers, Kubernetes, and Red Hat OpenShift
The two best training offered by QuickStart is as follows.
- Kubernetes Fundamental Training: Kubernetes fundamental training is designed to deploy complicated applications. The duration of the training is 10 hours. The training intends to benefit professionals working as a system administrator and programmer. A Kubernetes engineer earns around $122,444 on average annually.
- Kubernetes Development Training: Kubernetes development is a lengthy 35-hour training program. The course intends to teach the ways to containerize, host, arrange and deploy applications over various node cluster. The Kubernetes development training course is best suited for app developers and Kubernetes developers. On average, the salary earned after this certification is $143,493.
Do you have more questions? Schedule an online meeting with our experts and enroll at QuickStart today!