Services

Resources

Company

Our Work

Blog

Saurabh Hirani

Principal SRE @One2N

Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh is a principal SRE at One2N. He cares about systems you can trust and automation that sticks. He writes about alerts, Terraform, Git workflows, and project communication for engineers.

Blogs published by Saurabh Hirani.

Blogs published by Saurabh Hirani.

Illustration of a laptop and browser windows on a deep crimson background crossed with red circuit-like lines

Read Blog

How to fix the eMudhra CA compromise on macOS
Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Portrait of Spandan Ghosh, Content at One2N

Spandan Ghosh

Content @One2N

How to fix the eMudhra CA compromise on a Mac: clean the CA bundles curl reads, update Node, Python, Go and Java, and prove each fix with a probe.

Illustration on a navy background of a terminal running exec 3<>/dev/tcp/host/443, cabled into a network socket, next to a dashed folder labelled /dev/tcp that does not exist

Read Blog

How to test TCP connectivity without curl using bash /dev/tcp
Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

No curl, wget or nc on a locked-down box? Use bash /dev/tcp to check if a port is open and read HTTP endpoints, and learn why it fails in zsh.

Cover illustration for Just enough project management for engineers and best practices for presentations

Read Blog

Just enough project management for engineers and best practices for presentations
Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Engineers often skip project management, yet it drives career growth. Learn just enough of it, plus practical tips for better presentations.

Cover illustration for What happens when you run Terraform commands?

Read Blog

What happens when you run Terraform commands?
Portrait of Sahil Joseph, Staff SRE at One2N

Sahil Joseph

Staff SRE @One2N

Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

What happens when you run Terraform commands: how Terraform core talks to provider plugins over gRPC, credential handling, state locking and debugging.

Cover illustration for DARE to question your alerts?

Read Blog

DARE to question your alerts?
Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Alert fatigue grows when alerts are set and forgotten. DARE adds alerts per unit time to RED metrics, with fixes like muting CPU alerts during backups.

Cover illustration for Exploring RAG: enhancing LLMs with external knowledge

Read Blog

Exploring RAG: enhancing LLMs with external knowledge
Portrait of Harsh Mishra, SRE

Harsh Mishra

SRE

Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Retrieval augmented generation (RAG) for engineers: LLM basics, where standalone models fall short, and the parts of a RAG app such as embeddings.

Cover illustration for ClickHouse schema optimization for sparse data sets

Read Blog

ClickHouse schema optimization for sparse data sets
Portrait of Amit Sadafule, Lead Software Engineer

Amit Sadafule

Lead Software Engineer

Portrait of Spandan Ghosh, Content at One2N

Spandan Ghosh

Content @One2N

Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Portrait of Chinmay Naik, CEO at One2N

Chinmay Naik

CEO @One2N

Schema designs for storing and querying sparse data sets in ClickHouse, including a sparse matrix and separate tables, and when each one fits.

Cover illustration for Setting up CloudWatch alerts for EKS clusters: insights and solutions

Read Blog

Setting up CloudWatch alerts for EKS clusters: insights and solutions
Portrait of Mihir Bhagwat, SRE at One2N

Mihir Bhagwat

SRE @One2N

Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Portrait of Spandan Ghosh, Content at One2N

Spandan Ghosh

Content @One2N

CloudWatch alerts for EKS node readiness with Container Insights: per-node alarms for static nodes, then Metric Insights and MIN(MIN) for autoscaled ones.

Cover illustration for How to use multiple GitHub accounts on one machine

Read Blog

How to use multiple GitHub accounts on one machine
Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Use multiple GitHub accounts on one machine: a separate SSH key per account, SSH host entries, and includeIf in your Git config to pick the right identity.

Talks by Saurabh Hirani.

Talks by Saurabh Hirani.

Thumbnail for the talk Talking to Coding Agents from Neovim

Watch Talk

Talking to Coding Agents from Neovim
Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Saurabh Hirani explains how Neovim talks to CLI coding agents like Claude Code and OpenCode, and why the same patterns work in any editor.

Thumbnail for the talk .zshrc tmuxinator tease | Command Line Heroes EP3 - Bengaluru

Watch Talk

.zshrc tmuxinator tease | Command Line Heroes EP3 - Bengaluru
Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Saurabh Hirani, Principal SRE at One2N, walks through a real debugging story from Command Line Heroes in Bengaluru, from .zshrc to tmuxinator.

Thumbnail for the talk The implications of AI in the SRE world | One2N Bits Ep.5

Watch Talk

The implications of AI in the SRE world | One2N Bits Ep.5
Portrait of Jaideep Khandelwal, CTO at One2N

Jaideep Khandelwal

CTO @One2N

Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Saurabh Hirani and Jaideep Khandelwal break down what it takes for AI to be genuinely useful in SRE, beyond incident bots and code completion.

Thumbnail for the talk AI Enabled SRE Practices | One2N Cursor Meetup Pune

Watch Talk

AI Enabled SRE Practices | One2N Cursor Meetup Pune
Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Saurabh Hirani's lightning talk from the first Cursor Meetup in Pune, hosted at One2N, on what AI-enabled SRE practices look like in daily work.

All Authors