Knowledge is Power!
Enable SSM on eks nodes
k8s_terraform_metrics/templates/ssm.tf at main · ashwiniag/k8s_terraform_metricsTerraform + K8s + Vicoriametrics + Kube-state-metrics + Prometheus operator - ashwiniag/k8s_terraform_metricsGitHubashwiniag
Knowledge is Power!
But I do it to read Manga and laze around almost every where. That's why I try to write everything about servers and their stupid troubles.
Knowledge is Power!
terraform.tfstate dynamodb and S3
Most basic setup to have when working with terraform is - Where to store terraform statefile and avoid all hassles! Some issues you run into: * Access to tfstate: Needs access to same terraform statefile across the team to work with infra setup. Hence, statefiles are to be storedin shared location.
Knowledge is Power!
Linux Directory structure in brief
Knowledge can only be enhanced and is thoroughly understood when it is put in practice. Did you know everything in Linux is a file? Yes, including network connections, processes, everything! How does it all work? Navigating Linux directory structure helps understand what makes it so flexible and easier to access,
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Round percentage in Shell Script
item=30 total=70 percent=$(awk "BEGIN { pc=100*${item}/${total}; i=int(pc); print (pc-i<0.5)?i:i+1 }") echo $percent 43 --- used = 30 total = 70 percentage=$(awk "BEGIN { pc=100*${used}/${total}; i=int(pc); print (pc-i<0.5)?i:i+
Knowledge is Power!
Fargate - rolling update
dumps from long thread Hey, I'm seeing a few fargate tasks going from pending --> running --> stopped during rolling-update. Any idea why this'd happen? Ashwini 10 days ago I'm assuming it enters running state after all the criteria like ALB health
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Part 1: Crowd SSO
Goal: Setup SSO for atlassian bitbucket using crowd while fedarating users from external IdP. And end to end SSL termination. Let's break down the setup: 1. Integrate Crowd with Redhat SSO ( external IdP in my case ) 2. Integarte Crowd and bitbucket Crowd SSO provides authentication for all atlassian
Knowledge is Power!
Store ssh keys in AWS secret manager using Terraform
Adds ssh key to aws secrets manager using terraformAdds ssh key to aws secrets manager using terraform - main.tfGist262588213843476
Knowledge is Power!
Monitor Server using Prometheus and Grafana
Simple setup to monitor my machine using node_exporter: Exposes my machine metrics at http://localhost:9100/metrics prometheus: A storage for metrics. It scrapes the metrics from endpoint /metrics at defined interval to get the current state of the metrics and stores values in prometheus tsdb grafana: Visual representation
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Installing CloudWatch Agent on amazon linux 1
Abstract:: * Add CloudWatchAgentServerPolicy policy to EC2 instance IAM role * Install CloudWatch Agent ( amazon linux 1 ): https://s3.amazonaws.com/amazoncloudwatch-agent/amazon_linux/amd64/latest/amazon-cloudwatch-agent.rpm * Create a file /opt/aws/amazon-cloudwatch-agent/bin/config.json and add custom metrics needed for monitoring. Example: { "metrics": { "metrics_collected"
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Multitenancy
Multitenancy is a concept in which a single instance of a software application or service serves multiple customers or "tenants." Each tenant has their own isolated environment, separate from other tenants, and is only able to access and modify their own data. In simple words, it means that
Knowledge is Power!
Linux Log files and usage
Quick peek-a-boo :P => /var/log/messages : General log messages => /var/log/boot : System boot log => /var/log/debug : Debugging log messages => /var/log/auth.log : User login and authentication logs => /var/log/daemon.log : Running services such as squid, ntpd and others log message to
Knowledge is Power!
Mail server & SES
Basic understanding Story is kinda similar to DNs basics. * There is a sender and a receiver. Both have their Email server. * To make it easy these mail server can be gmail, yahoo, orkut etc. * EX:Sender's mail: sender@gmail.comReceiver's mail: receiver@yahoo.comsender wants to