How to use Prometheus and k8sBot

This is us eating our own dog food. How else are we going to find these use cases =)

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GKE | Prometheus | k8sBot

Kubernetes Troubleshooting Walkthrough - GKE Prometheus Operator alert KubeVersionMismatch

I am writing a series of blog posts about troubleshooting Kubernetes. One of the reasons why Kubernetes is so complex is because troubleshooting requires many levels of information gathering. It’s like trying to find the other end of a string in a tangled ball of strings.

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GKE | Prometheus | Operator | alert | KubeVersionMismatch

Using k8sBot to get Kubernetes Pod Logs in Slack

Getting your Kubernetes pod logs into your Slack channel is easy now. No more cutting and pasting from kubectl to Slack. You can directly ask k8sBot to fetch the logs for you and post it to the channel.

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kubernetes | k8sBot | pod | logs

Kubernetes Troubleshooting Walkthrough - imagepullbackoff

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kubernetes | k8sbot | troubleshooting | imagepullbackoff

Kubernetes Troubleshooting Walkthrough - Pending Pods

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kubernetes | k8sbot | troubleshooting | pending | pod

Kubernetes Troubleshooting Walkthrough - Trace ingress no service endpoints

This post is part of a Troubleshooting Walkthrough Series. I will talk about how to resolve common errors in Kubernetes clusters.

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kubernetes | Trace | ingress | no | service | endpoints | k8sbot

Kubernetes Troubleshooting Walkthrough - Failing Job

This post is part of a Troubleshooting Walkthrough Series. I will talk about how to resolve common errors in Kubernetes clusters.

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kubernetes | Failing | Job | k8sbot | troubleshooting

Kubernetes Troubleshooting Walkthrough - Tracing through an ingress

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kubernetes | trace | ingress | service | port | not | matching | pod | port | k8sbot

Kubernetes Troubleshooting Walkthrough - Pod Failure CrashLoopBackOff

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kubernetes | pod | failure | CrashLoopBackOff | k8sbot | troubleshooting

The Definitive Guide to Lowering Cloud Costs of Kubernetes Clusters

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kubernetes | cloud | costs

Introducing k8sBot

A Kubernetes troubleshooting chatbot

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kubernetes | slack | bot | troubleshooting | chatbot | k8sbot

ManagedKube launches on GKE Marketplace at KubeCon

ManagedKube is excited to announce their launch on GKE’s Marketplace at KubeCon! Keep an eye out for our application during Google’s keynote.

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Kubernetes | cost | tool

Launching ManagedKube, a tool to help you decrease Kubernetes Cloud Costs

Using Kubernetes? Us too. It’s helped us deploy code that is more flexible, reliable, and efficient. However, the inherent sharing nature of Kubernetes that facilitates these benefits also creates a problem — you have no visibility into how much stuff costs. Once you’re up and running with Kubernetes, the next question I always hear as a DevOps consultant is, “What is this costing me?”

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Kubernetes | costs

Kubernetes Troubleshooting a Deployment

I have launched my deployment but when i list the pods, I don’t see a pod for that deployment. How would I troubleshoot this and what would I look for.

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Kubernetes | troubleshooting

Kubernetes: troubleshooting ingress and services traffic flows

Kubernetes is a great platform to run your application on, and it handles a lot of the heavy lifting on wiring up your application together.

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Kubernetes | ingress | flows

How to check TLS Cert Expiration Date

$ kubectl -n devops get secret NAME TYPE DATA AGE default-token-88ssj kubernetes.io/service-account-token 3 109d devops-grafana Opaque 3 102d devops-grafana-token-ldcsh kubernetes.io/service-account-token 3 102d grafana-tls kubernetes.io/tls 2 91d istio.default istio.io/key-and-cert 3 35d istio.devops-grafana istio.io/key-and-cert 3 35d istio.kube-state-metrics istio.io/key-and-cert 3 35d istio.prometheus istio.io/key-and-cert 3 35d kube-state-metrics-token-qb2d2 kubernetes.io/service-account-token 3 105d prometheus-tls kubernetes.io/tls 2 91d prometheus-token-6pfxv kubernetes.io/service-account-token 3 105d

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Kubernetes | gitops

KOPS Updating Cluster Is Awesome

Here is yet another reason why I think the Kops tool for creating and managing a Kubernetes’ cluster lifecycle is so great.

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Kubernetes | kops | gitops

Kubernetes RBAC Port Forward

The kubectl CLI tool has a really nice feature that lets you port-forward a local port to a remote port into a pod. For example, if you are running a Postgres server or a web server, you usually cant reach it without exposing a nodeport or an ingress. Sometime this is undesirable because you dont want to expose it out to the world or you just need to access this port for debugging reasons.

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Kubernetes | RBAC | Port | Forward | port-forward

Kubernetes Cron Jobs

Sometime you just have to run a cronjob that does something and sometime you have to run a cronjob that restarts a service. Yeah, unfortunately this is a thing.

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kubernetes | cron | job

Using the AWS CLI - find and terminate an EC2 Instance

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aws | cli | ec2

Kubernetes Access External Services

There are often time when you will need to access an external service in Kubernetes but still want to use a static name.

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kubernetes | service | external

sshuttle VPN

sshuttle uses ssh and python to create a tunnel from your local machine to any remote network you are able to ssh into.

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kubernetes | vpn

Docker Container Toolbox

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docker | aws | tools | troubleshooting

Various kubectl Usage

Download the latest kubectl version here: https://kubernetes.io/docs/tasks/tools/install-kubectl/

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kubernetes | kubectl | logs

Kops Cluster Templating

If you havent heard of the tool Kops (https://github.com/kubernetes/kops) for create Kubernetes clusters, you should check it out right now! It is a great tool to create and manage the lifecycle of a Kubernetes cluster.

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kubernetes | kops

Kubernetes RBAC - giving permissions for logging and port-forwarding

I am really liking Kubernetes RBAC. It is “fairly” simple to use and so powerful.

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Kubernetes | Rbac | Security

S3 - How to restore an entire folders version

This tutorial explains how to use a tool that will help you to restore an entire S3 folder’s files.

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Aws | S3 | Troubleshooting | Versioning

Kubernetes DNS Troubleshooting

On a new cluster we saw the following logs from an application we launched:

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Aws | Kubernetes

Why use Kops

Why Use Kops to create your Kubernetes cluster

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Aws | Kubernetes | Kops

Kubectl Pod logs

There are a few useful options when getting logs from your Kubernetes pods:

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Aws | Kubernetes | Logs

AWS WAF

The AWS WAF (Web application firewall) protects your web servers from malicious attacks from the internet and provides DDoS protection at a very low cost compared to all other available solutions. With so many automated bots looking to exploit vulnerabilities, you can be hacked even if you’re not targeted. Once a bot scan has found you susceptible to a certain vulnerability, it will extract as much information as possible. In today’s world, you must take active steps to protect yourself before something bad happens.

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Aws | Waf | Security