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DevOps

38 posts, newest first.

20254

DevOps15 Sept 2025Self-Hosted Kafka: Security, Monitoring and Day-Two OperationsEncrypt and authenticate a KRaft cluster with TLS and SCRAM, set ACLs and quotas, monitor the signals that matter, and run upgrades, rebalancing and disaster recovery.

Apache Kafka 4.0
SASL/SCRAM
TLS

DevOps1 Sept 2025Self-Hosted Kafka 4: A Three-Node KRaft ClusterApache Kafka 4.0 has no ZooKeeper at all. Build a KRaft cluster with dedicated controllers and brokers, sized, tuned and tested for production, with a smaller combined-node option.

Apache Kafka 4.0
KRaft
OpenJDK 17

DevOps17 Feb 2025Jenkins: Build an Angular UI and Deploy It to S3 in Every RegionOne build, then a parallel deploy to regional S3 buckets and CloudFront with region-specific API URLs, approvals, smoke tests and rollback.

Jenkins 2.492 LTS
Angular 19
Node.js 22 LTS

DevOps3 Feb 2025Angular for Many Regions: Build Once, Configure at RuntimeAvoid one build per region: load the API URL and feature flags from a config file at startup, with the caching, validation and hosting setup that makes it safe.

Angular 19
Node.js 22 LTS
Amazon S3

202413

DevOps30 Sept 2024PostgreSQL 17 Released: What Changed and a Safe Upgrade RunbookPostgreSQL 17.0 arrived on 26 September 2024. The features worth knowing, and a tested pg_upgrade plan with rollback for moving a 16 cluster.

PostgreSQL 17.0
pg_basebackup
pg_upgrade

DevOps2 Sept 2024PostgreSQL 16: Install, Secure and Tune on Ubuntu 22.04A production-minded PostgreSQL 16.4 install from the PGDG repository with scram authentication, pg_hba rules, memory tuning, pgBackRest backups and a streaming replica.

PostgreSQL 16.4
Ubuntu 22.04 LTS
pg_hba.conf

DevOps19 Aug 2024MongoDB 7.0: Replica Set, Failover and Backups You Can RestoreBuild a three-member replica set with a hidden backup member, set write concern correctly, and take and test backups with mongodump and point-in-time options.

MongoDB 7.0
Replica set
mongodump

DevOps5 Aug 2024MongoDB 7.0: Install on Ubuntu with Authentication and TLSInstall MongoDB 7.0 from the official repository, enable role-based access control, restrict network exposure, add TLS, and prepare the host properly.

MongoDB 7.0
mongosh 2.2
Ubuntu 22.04 LTS

DevOps17 Jun 2024Kafka 3.7: Partitions, Replication, Consumer Groups and LagHow partitions, replication, min.insync.replicas and consumer groups fit together, with settings for safe producers, rebalancing and lag monitoring.

Apache Kafka 3.7
kafka-consumer-groups.sh
KRaft

DevOps3 Jun 2024Apache Kafka 3.7: Installing a KRaft Broker Without ZooKeeperInstall Kafka 3.7 in KRaft mode on Ubuntu with a systemd service, a safe data directory, a first topic, and the path from a single node to a production quorum.

Apache Kafka 3.7
KRaft
OpenJDK 17

DevOps14 May 2024Private npm Registry on an Ubuntu VM with Verdaccio and NginxHost a private npm registry with Verdaccio on Ubuntu 22.04: systemd service, Nginx with TLS, users and package access rules, upstream proxying, publishing and CI use.

Verdaccio 5
Node.js 20 LTS
Nginx

DevOps15 Apr 2024Redis 7.2: Install, Persistence, Security and Sentinel HAA hardened Redis 7.2 on Ubuntu 22.04 with ACL users, AOF and RDB persistence, memory limits, backups and a three-node Sentinel setup for failover.

Redis 7.2
Ubuntu 22.04 LTS
Redis Sentinel

DevOps1 Apr 2024Redis Licence Change and Valkey: What It Means for YouOn 20 March 2024 Redis moved future versions to source-available licences and the Linux Foundation announced Valkey. A practical look at what changes and how to decide.

Redis 7.2
Redis 7.4 licence change
Valkey

DevOps18 Mar 2024SonarQube: Scanning in CI and Enforcing Quality GatesRun sonar-scanner from Jenkins and GitLab CI with a token, fail builds on a quality gate, and set sensible gate conditions for new code.

SonarQube 10.4
sonar-scanner 5.0
Jenkins 2.440 LTS

DevOps4 Mar 2024SonarQube: Production-Style Install with Docker ComposeRun SonarQube Community Build behind a TLS proxy with an external PostgreSQL, correct kernel settings, backups and an upgrade path.

SonarQube 10.4 Community
PostgreSQL 15
Docker Compose 2.24

DevOps19 Feb 2024GitLab CI: Runners, Executors and a Real PipelineRegister Docker-executor runners with the current authentication-token workflow, write a build, test and deploy pipeline, and handle caching, tags and security.

GitLab 16.9
GitLab Runner 16.9
Docker 25.0

DevOps5 Feb 2024Installing GitLab CE on Ubuntu 22.04A self-managed GitLab using the Omnibus package, with HTTPS, SMTP, the container registry, scheduled backups, hardening and a safe upgrade routine.

GitLab CE 16.8
Ubuntu 22.04 LTS
Omnibus

202314

DevOps21 Nov 2023Automating MySQL Dumps: Jenkins Through a Bastion to Local ServersA scheduled Jenkins pipeline that reaches a private MySQL server through a bastion host, takes a consistent dump, and copies it to local backup servers with retention and checks.

Jenkins 2.426 LTS
Declarative Pipeline
mysqldump

DevOps21 Aug 2023Ansible Dynamic Inventory for AWS EC2Let Ansible discover EC2 instances by tag with the aws_ec2 inventory plugin, build groups and host variables dynamically, use an IAM role, and connect through SSM Session Manager without opening SSH.

ansible-core 2.15
amazon.aws collection
boto3

DevOps7 Aug 2023Ansible: Roles, Variables and VaultOrganise playbooks into roles with defaults, handlers and templates, understand variable precedence, encrypt secrets with Ansible Vault and test roles before they reach production.

ansible-core 2.15
Ansible 8
Ubuntu 22.04 LTS

DevOps19 Jun 2023Grafana 10: Alerting and Dashboards as CodeGrafana 10.0 was released on 12 June 2023. Provision alert rules, contact points, notification policies, data sources and dashboards from files in Git and avoid click-ops.

Grafana 10.0
Grafana Alerting
Provisioning

DevOps5 Jun 2023Installing Grafana 9.5 and Adding Data SourcesInstall Grafana OSS 9.5 on Ubuntu 22.04 from the official repository, secure it behind nginx with TLS and SSO, connect Prometheus and CloudWatch, and provision data sources and dashboards.

Grafana OSS 9.5
Prometheus 2.44
Ubuntu 22.04 LTS

DevOps22 May 2023Prisma Cloud: Image Scanning and IaC ChecksShift security left: scan container images with twistcli in CI, set pass/fail policy, run Checkov on Terraform and CloudFormation, handle suppressions and understand runtime Defenders.

Prisma Cloud Compute
twistcli
Checkov 2.3

DevOps8 May 2023Prisma Cloud: Onboarding an AWS AccountConnect AWS accounts to Prisma Cloud for posture management: a read-only cross-account role with an external ID, Monitor versus Monitor and Protect, organization onboarding, compliance standards and triage.

Prisma Cloud
CSPM
CloudFormation

DevOps17 Apr 2023Jenkins: Agents, Credentials and Configuration as CodeRun builds on separate SSH or inbound agents, manage credentials safely, and describe the Jenkins controller with Configuration as Code and a pinned plugin list so it can be rebuilt from Git.

Jenkins 2.387 LTS
Configuration as Code plugin
Docker 23.0

DevOps3 Apr 2023Installing Jenkins LTS on Ubuntu 22.04Install Jenkins 2.387 LTS with Java 17 from the stable repository, put nginx and TLS in front, change the port, harden the controller and plan upgrades and backups.

Jenkins 2.387 LTS
OpenJDK 17
Ubuntu 22.04 LTS

DevOps20 Mar 2023New Relic: NRQL Dashboards and AlertsQuery telemetry with NRQL, build a dashboard, and turn a query into an alert condition with sensible thresholds, signal-loss handling, workflows and muting rules.

New Relic One
NRQL
Alert conditions

DevOps6 Mar 2023New Relic: Infrastructure and APM AgentsInstall the New Relic infrastructure agent on a Linux host and the Node.js APM agent in an application, configure them safely, control data volume and troubleshoot missing data.

New Relic One
Infrastructure agent
Node.js agent

DevOps20 Feb 2023Bitbucket Pipelines: Build and Push an ImageA bitbucket-pipelines.yml that tests every pull request, builds and scans a Docker image on main, authenticates to AWS with OIDC and gates production deploys.

Bitbucket Pipelines
Docker 23.0
Node.js 18

DevOps6 Feb 2023Bitbucket Cloud: Repositories, Pull Requests and Branch RulesSet up a Bitbucket Cloud workspace so changes reach main only through review: workspaces and projects, SSH keys, Jira links, branch permissions, merge checks, CODEOWNERS-style default reviewers and recovery tips.

Bitbucket Cloud
Git 2.39
Jira

DevOps9 Jan 2023Measuring DevOps with the Four Key MetricsDeployment frequency, lead time, change failure rate and time to restore: how to define them, collect them from Git, CI and incident data, read them honestly and avoid misuse.

DORA metrics
GitHub
CloudWatch

20227

DevOps17 Oct 2022CloudFormation and the AWS CDKUse CloudFormation stacks, change sets and drift detection, then write the same infrastructure in TypeScript with CDK v2, including bootstrapping, diffs and safe deletion policies.

AWS CloudFormation
AWS CDK v2
TypeScript

DevOps1 Aug 2022Ansible: Configure Servers Without Logging InInventories, idempotent playbooks, variables, handlers, templates, roles and Vault with ansible-core 2.13, plus safe rollout and troubleshooting.

ansible-core 2.13
Python 3.10
Ubuntu 22.04 LTS

DevOps18 Jul 2022Terraform Remote State and Locking on AWSStore Terraform state in a hardened S3 bucket with DynamoDB locking, bootstrap it safely, split states by environment and recover from locks and corruption.

Terraform 1.2
Amazon S3
Amazon DynamoDB

DevOps4 Jul 2022Terraform: Infrastructure as Code BasicsWrite, plan and apply AWS resources with Terraform 1.2: providers, variables, outputs, modules, the plan and apply workflow, drift, imports and safe practices.

Terraform 1.2
AWS provider 4.x
Region ap-south-1

DevOps6 Jun 2022Jenkins: A Declarative PipelineWrite a declarative Jenkinsfile with stages, agents, credentials, parallel steps, post actions and approvals, and run Jenkins safely with a shared library and ephemeral agents.

Jenkins 2.332 LTS
Java 11
Pipeline plugin

DevOps16 May 2022Continuous Integration with GitHub ActionsBuild a CI workflow with caching, a test matrix, least-privilege permissions, concurrency control, container image builds and keyless deployment to AWS using OIDC.

GitHub Actions
actions/checkout v3
Node.js 16

DevOps2 May 2022A Git Workflow That Teams Can FollowTrunk-based development with short-lived branches, pull requests and protected main: commands, branch protection, commit conventions, and how to recover from mistakes.

Git 2.36
GitHub
Branch protection