To make use of Kubernetes’ powerful labeling capabilities, it is essential to ensure that you use proper label naming. Loose naming can make it difficult to query information. Additionally, it can make it harder to find the information you need. Following these best practices will help you to achieve better infrastructure visibility and response to issues.
Keeping an eye on resources in Kubernetes
If you are running a Kubernetes cluster, keep an eye on the resources that are available. This means that you should look for any anomalies. The Kubernetes database has an API that allows you to monitor resources. Using this API, you can monitor the health of your cluster and see if there are problems. It is best to ask for help from professionals like https://portworx.com/blog/which-databases-best-complement-kubernetes/.
Another way to monitor Kubernetes resources is to view their metrics. For example, the disk pressure metric can indicate if a node uses disk space too quickly. This metric is helpful because it can identify problems with your application.
When monitoring Kubernetes, choosing a monitoring solution that can handle the volume of data generated by a cluster is essential. The monitoring solution should be able to collect and analyze this data in real-time and provide alerts. It should also be able to filter out unnecessary data and only show you the information that is most relevant. This can save you a great deal of time in monitoring.
Using labels to identify objects
Labels are a powerful feature of Kubernetes that allows teams to organize and query the resources within a cluster. They also make it easier to manage and troubleshoot problems as they arise. Kubernetes supports both custom and shared labels. You can use the same name for every resource in your cluster or use a different naming convention depending on your needs.
A label is a unique key-value pair that identifies an object. For example, an object’s name might be “service deployment” or “environment”. Labels can be up to 63 characters long, and they include alphanumeric, underscore, and dot characters. The first and last characters must be alphanumeric, but labels can contain multiple values. You can also add additional labels to an object.
If you’re using Kubernetes to deploy and maintain a cloud computing service, you can assign labels to containers and pods. By using labels, you can identify these containers and pods based on their properties. Labels can be applied to any dimension, including the namespace and replica set. Using labels to identify objects in Kubernetes can give you a more unified view of your application’s health and performance.
Encrypting communications between containers
Kubernetes provides a way to encrypt communications between containers in its database. By default, sensitive data is stored in plaintext, which can pose security risks. Encrypting these communications can help reduce the attack surface and provide greater flexibility with pod life cycles. Encrypting the communication between containers can be done using environment variables or a dedicated file system.
Another essential feature to consider when encrypting communications between containers is that they should only be transmitted when necessary. Storing secrets in a container’s image will expose the secrets to many more processes and users than it should. Ideally, these secrets should only be transmitted when the container runs and should not be accessible at the host level. They should also disappear when the container shuts down.
Limiting exposed ports
A poorly configured or accidentally exposed Kubernetes cluster is a target for malicious activity. A malicious user can compromise the cluster, reconfigure the nodes, delete audit trails, and boot up malicious crypto miners. Most current platform offerings offer secure defaults for Kubernetes configurations, but older deployments may need to be more secure.
One of the easiest ways to secure a Kubernetes cluster is by limiting the number of exposed ports. This feature is built into the Kubernetes API and is exposed to the internet.