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Blogs

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GitOps for Kafka: how we governed 78 clusters without breaking production

Harshwardhan Mehrotra

SRE @One2N

Spandan Ghosh

Content @One2N

GitOps for Kafka with Jikkou: how a small platform team governed 78 clusters, 10,000+ topics and Kafka 0.8.2 to 4.x, replacing 3 to 5 day topic tickets.

February 16, 2026 | 4 min read

Read Blog

Alerting with GitOps: automating Elasticsearch alerts

Srivatsa RV

SRE @One2N

Automating Elasticsearch alerts with GitOps: we replaced manual 30-minute dashboard checks on the ELK stack with alert definitions a NOC team can act on.

April 29, 2025 | 9 min read

Read Blog

GitHub runners fundamentals and self-hosted runner setup

Rajesh Jangid

SRE

Spandan Ghosh

Content @One2N

What GitHub runners are, how GitHub-hosted and self-hosted runners differ, and how to set up a self-hosted GitHub Actions runner.

April 10, 2025 | 5 min read

Read Blog

Achieving CI/CD with previews for your static website hosted on S3

Drasti Kaurav

SRE @One2N

CI/CD for a static website on S3 with preview environments: automated builds and deploys without developer AWS keys, plus CloudFront cache invalidation.

February 24, 2024 | 4 min read

Read Blog

Making your Go CLI binaries self-updatable

Sitaram Shelke

SRE

Make Go CLI binaries self-updatable without brew or apt: fetch the latest release, download the binary for the OS and architecture, and apply the update.

January 25, 2024 | 8 min read

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Routing sensitive logs to Syslog server with Log4j2 appender

Hrithik Sawant

SDE

Routing sensitive logs to a Syslog server using Log4j2 appender: a simple, centralized configuration approach to securely manage high-volume application logs.

November 25, 2023 | 2 min read

Read Blog

Moving from traditional CD pipelines to GitOps

Jaideep Khandelwal

CTO @One2N

Moving from traditional CD pipelines to GitOps: shared Jenkins credentials and cross-environment access, GitOps principles, and how we adopted Flux CD.

June 17, 2023 | 4 min read

Read Blog

Terraform: best practices & gotchas

Siddharth Shashikar

SRE @One2N

Terraform best practices and gotchas for infrastructure as code: directory structure, module organisation, naming conventions and state management.

May 27, 2022 | 10 min read

Read Blog

Homogenous build setups for local and CI workflows

Sitaram Shelke

SRE

Homogenous build setups give local and CI one interface to build and test. How we used Makefiles and Bash with Jenkins so builds match everywhere.

March 10, 2022 | 3 min read

Read Blog

Iptables, Firewalls, Linux blast from the past!

Jaideep Khandelwal

CTO @One2N

An iptables guide for SREs: syntax, tables, chains and targets on Netfilter, plus using a machine as a NAT device and resolving NAT IPs across VLANs.

February 17, 2022 | 4 min read

Talks

Watch Talk

Making your cli self Updateable

Shubham Rasal

SRE

How to make Go binaries self-updatable using Minio's self-update library, with real examples from ProjectDiscovery and Cloudlens.

September 9, 2023 | 3 min

Watch Talk

Cloudlens AWS console in your terminal

Chinmay Naik

CEO @One2N

A talk on Cloudlens, One2N's open source tool written in Go that brings the AWS console into your terminal, and how we built and use it.

September 9, 2023 | 2 min

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Services

Resources

Company

CI/CD

Blogs

GitOps for Kafka: how we governed 78 clusters without breaking production

GitOps for Kafka with Jikkou: how a small platform team governed 78 clusters, 10,000+ topics and Kafka 0.8.2 to 4.x, replacing 3 to 5 day topic tickets.

Alerting with GitOps: automating Elasticsearch alerts

Automating Elasticsearch alerts with GitOps: we replaced manual 30-minute dashboard checks on the ELK stack with alert definitions a NOC team can act on.

GitHub runners fundamentals and self-hosted runner setup

What GitHub runners are, how GitHub-hosted and self-hosted runners differ, and how to set up a self-hosted GitHub Actions runner.

Achieving CI/CD with previews for your static website hosted on S3

CI/CD for a static website on S3 with preview environments: automated builds and deploys without developer AWS keys, plus CloudFront cache invalidation.

Making your Go CLI binaries self-updatable

Make Go CLI binaries self-updatable without brew or apt: fetch the latest release, download the binary for the OS and architecture, and apply the update.

Routing sensitive logs to Syslog server with Log4j2 appender

Routing sensitive logs to a Syslog server using Log4j2 appender: a simple, centralized configuration approach to securely manage high-volume application logs.

Moving from traditional CD pipelines to GitOps

Moving from traditional CD pipelines to GitOps: shared Jenkins credentials and cross-environment access, GitOps principles, and how we adopted Flux CD.

Terraform: best practices & gotchas

Terraform best practices and gotchas for infrastructure as code: directory structure, module organisation, naming conventions and state management.

Homogenous build setups for local and CI workflows

Homogenous build setups give local and CI one interface to build and test. How we used Makefiles and Bash with Jenkins so builds match everywhere.

Iptables, Firewalls, Linux blast from the past!

An iptables guide for SREs: syntax, tables, chains and targets on Netfilter, plus using a machine as a NAT device and resolving NAT IPs across VLANs.

Talks

Making your cli self Updateable

How to make Go binaries self-updatable using Minio's self-update library, with real examples from ProjectDiscovery and Cloudlens.

Cloudlens AWS console in your terminal

A talk on Cloudlens, One2N's open source tool written in Go that brings the AWS console into your terminal, and how we built and use it.

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