Latest from Sharon
Maximizing Uptime with AI: The Game-Changer in Meeting Service Level Objectives
Quiz #21 was: An organization’s critical online service has a Service Level Objective (SLO) of 99% uptime. Over a quarter, the service experienced several minor incidents exceeding the 1% error budget, triggering a comprehensive review by the service owner to identify and rectify the root causes. What does this scenario illustrate about the importance of […]
Feb 29, 2024 · 3 minAll articles by Sharon Florentine
Showing 1–13The Code Caveat: When Developer Credentials Become the Hacker’s Pickaxe
Quiz #19 was: One morning, you receive an alert about unusual activity within your cloud environment. Upon investigation, you discover that a malicious actor has gained access to your company’s cloud resources and deployed a cryptocurrency mining script, siphoning off valuable computing power. After tracing the breach, you realize the attacker infiltrated the system using […]
Kubernetes Troubleshooting in GitOps: Dealing with Unexpected Helm Chart Modifications
Quiz #17 was: You’re working in a GitOps environment where developers use Helm charts to manage Kubernetes deployments. One day, a developer makes a change to a Helm chart to adjust the replica count of a deployment. However, after the change is applied, you notice that the deployment’s pod template has also been unexpectedly modified, […]
Service Upgrade Pods Quiz Results
After a service upgrade the pods are taking too long to serve traffic. What would you need to find out to debug? 1. The validating webhook for pods has failed 2. The cluster doesn’t have enough CPU/memory to schedule the pod to a node 3. The new code added an init container and the init […]
Container Image Tags
In a Kubernetes environment, you encounter a situation where a service’s configuration is not consistent across multiple clusters. What common configuration element could be the source of this issue? 1. Pod resource requests and limits 2. Container image tags 3. Ingress controller settings 4. Service account permissions 5. Node affinity rules Correct Answer: 2) Container […]
RBAC
While troubleshooting a production issue in your Kubernetes cluster, you notice that a critical application pod is repeatedly crashing. In the pod’s logs, you see an error message indicating “Permission Denied.” After further investigation, you discover that the issue is related to security authorization. What could be a likely cause of this problem? Correct Answer: […]
Post service upgrade pods are taking too long to serve traffic – Answers
After a service upgrade the pods are taking too long to serve traffic. What would you need to find out to debug? 1. The validating webhook for pods has failed 2. The cluster doesn’t have enough CPU/memory to schedule the pod to a node 3. The new code added an init container and the init […]
Elevated Resource Levels
A microservice in your Kubernetes cluster has been exhibiting intermittent performance degradation after a recent code change. What could be potential root causes of this issue? (Select two correct answers) Incorrect Prometheus alerting rules Elevated resource limits for the microservice pods Inadequate PodDisruptionBudget configurations CPU and memory pressure on worker nodes A misconfigured HorizontalPodAutoscaler (HPA) […]
Intermittent Microservice Problem
In a Kubernetes environment, a recent pod scheduling failure occurred due to a specific configuration. Which Kubernetes resource type, often associated with node constraints, might have caused this failure, especially if it wasn’t defined correctly? NodeSelector ResourceQuota PriorityClass Taint PodDisruptionBudget 201 people answered the question. And their answers are reflected in the chart below. The […]
Post service upgrade pods are taking too long to serve traffic
After a service upgrade the pods are taking too long to serve traffic. What would you need to find out to debug? 1. The validating webhook for pods has failed 2. The cluster doesn’t have enough CPU/memory to schedule the pod to a node 3. The new code added an init container and the init […]
Red Hat Enhances Insights to Simplify RHEL Management
This week at its Red Hat Summit event, Red Hat introduced an expanded set of capabilities to Red Hat Insights that simplify management of Red Hat Enterprise Linux (RHEL). Managing Linux across the hybrid cloud is complex, and it’s made even more so because of current macroeconomic conditions and the challenge of finding and retaining […]
Red Hat Unveils Developer Hub to Boost Dev Productivity
At its Red Hat Summit conference today, Red Hat unveiled its Red Hat Developer Hub, a developer portal that provides access to an opinionated set of development tools based on the open source Backstage project. The portal pulls together a set of curated tools and resources so that developers encounter less friction and avoid the […]
Infographic: 8 Trends Shaping Software Delivery in 2022
[pdf-embedder url=”https://devopsy.kinsta.cloud/wp-content/uploads/2022/09/INFOGRAPHIC-8-trends-shaping-the-future-of-software-delivery-in-2022-Final.pdf” title=”INFOGRAPHIC – 8 trends shaping the future of software delivery in 2022 – Final”] Sharon Florentine