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  1. Blog
  2. Rajan Patel
Rajan Patel

Rajan Patel

18 posts

Product Manager

Rajan Patel is the Product Manager of Livepatch and Landscape, and focuses on systems management and security at scale. In his spare time, Rajan explores the intersection of performance optimisation and cost optimisation for public, private, hybrid, and multi cloud workloads.

Rajan Patel
24 September 2025

Mythbusting the scope of Livepatch protection

Security Article

The purpose of this article is to share the technical realities of security patching for the Linux kernel, and the intended scope of the Linux kernel’s livepatch capability. We’ll cover when kernel live patching is most appropriate, and when updating deb and snap packages and then rebooting is the best option. ...

Rajan Patel
2 July 2025

Live Linux kernel patching with progressive timestamped rollouts

Security Article

In internet connected environments, where Ubuntu instances can reach livepatch.canonical.com, Livepatch Client supports timestamp-based rollout configurations. Organizations can implement controlled and predictable update pipelines from staging to production environments, without the hassle of deploying a self-hosted Livepatch Server, and ...

Rajan Patel
1 July 2025

Update Livepatch Client for the newest kernel module signing certificate

Security Article

The kernel engineering team at Canonical has generated a new module signing certificate on May 16, 2025, and it is embedded in all Ubuntu kernels published after that date. Livepatch Client version 10.11.2 published on June 13, 2025 includes this new certificate. Livepatch Client 10.11.2 or greater is required to successfully Livepatch al ...

Rajan Patel
27 June 2025

How is Livepatch safeguarded against bad actors?

Security Article

What safeguards the Livepatch security patching solution against bad actors and malicious code masquerading as an update? Learn about Secure Boot and module signing. ...

Rajan Patel
31 March 2025

Automated patching for the Linux kernel

Security Article

To start securely and efficiently, Linux systems follow a carefully orchestrated sequence of steps to initialize firmware and manage services. Applying security patches to the software responsible for some of these early steps of Linux startup often requires a full system reboot. Frequent reboots driven by unplanned critical patching is d ...

Rajan Patel
4 March 2025

Install FreePBX and Asterisk on Ubuntu 24.04 LTS for security patches until 2036

Cloud and server Article

Deploying FreePBX and Asterisk on a single Ubuntu virtual machine in a public cloud is an ideal solution for personal users and small to medium-sized businesses with voice over IP (VoIP) and fax over IP (FoIP) needs. This setup costs nothing, is scalable and secure, and has daily recovery points with a recovery time measured ...

Rajan Patel
11 July 2024

How often do you apply security patches on Linux?

Security Article

Understanding Canonical’s release schedules for software updates and knowing security patching coverage windows are essential pieces of information when defining a security patching strategy. ...

Rajan Patel
13 September 2023

Deploy fully configured VMs in minutes on Google Cloud, using gcloud CLI and cloud-init

Cloud and server Article

Make reusable deployment templates for Landscape and other applications ...

Rajan Patel
8 September 2023

Manage FIPS-enabled Linux machines at scale with Landscape 23.03

Cloud and server Article

You or your organisation are tasked with hardening your workstations and servers, where do you begin? Installing Ubuntu and applying all the security patches is a good place to start, but what else is needed? The National Institute of Standards and Technology (NIST), a cybersecurity agency established in 1988, has published a series of se ...

Rajan Patel
1 March 2023

Create stop motion animation with Dragonframe on Ubuntu

Ceph Desktop

Guillermo del Toro’s Pinocchio was animated using Dragonframe, opening the door for incredible stop motion visual effects. Anyone inspired by the techniques used in Pinocchio can make an animated movie using their iOS or Android device’s camera, connected to Dragonframe running on Ubuntu. Professional animators could go one step further a ...

Rajan Patel
9 February 2023

3 ways to apply security patches in Linux

Cloud and server Article

There are 3 approaches to applying security patches in Linux: manual patching, via package managers, and automatic updates. If you need security patching that can be automated at scale, and audited on the fly with on-demand reports, Landscape has your bases covered. ...

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