Caching and Non-trusted Certificate — I have API Connect installed on OpenShift with Cloud Pak for Integration. Each time when open a UI, it is taking minutes to get the page fully rendered. Why? Take the example of Cloud Manager Web Console, total about 70+ MB files (javacript and other static files) need to be…

I got a task to measure some REST API’s response time. The requirement is to run these bunch of API every 5 seconds for about 30 minutes repeatedly and finally calculate the average response time. A simple enough requirement, a load testing tool seems like an overkill. Linux crontab? No…

With the popularity of Kubernetes Operators, its becoming difficult to inject fault into the application by manipulating its YAML definitions. To simulate an error, understand the problem, and therefore respond better as part of the chaos engineering process, we have to start from somewhere the operator doesn’t control. This paper…

Simply having a database backup is not enough; you will need to test if the backup is usable as part of the total disaster recovery testing process. This paper sets up an approach to test if the backup of a postgres DB is valid for restore. Based on the finding…

Let’s explore the S3 Backup for API Connect. The testing environment is on OpenShift with ODF installed. Create Bucket with Noobaa Create our backup bucket with ODF Noobaa Storage Class apiVersion: objectbucket.io/v1alpha1 kind: ObjectBucketClaim metadata: name: backup-bucket-claim namespace: apic spec: bucketName: backup-bucket #exact name storageClassName: openshift-storage.noobaa.io Check the Object Bucket (ob) is available,

One of a basic rule in a production environment is the control of the versioning. Without a CR approval, a new version of software should not be updated. OpenShift Operators automate the installation and management of software. However it doesn’t mean we should lose the change control. A Potential Problem Commonly we will…

I have a set of test profile as in Postman collections. I need to update the URL path to the new hostname and path. I export the Postman collections and get the following Json file (simplified for illustration purpose), { "info": { "_postman_id": "c8f9633b-25ac-4c62-b6a7-6078f2a67246", "name": "Reqres APIs"…

To allow Large Language Model deal with data that is not available during the pre-training stage or to deal with private data, one of the common technique without retraining the model is the Retrieval-Augmented Generation (RAG). In essence, this technique retrieve the relevant data and supplies them to the LLM…

I have a local registry for the OpenShift Cluster. We just did some migration and retired the old registry. However some images were missed out leading to some of the Pods not running properly. The issue was not so obvious as the default image pull policy for most of the…