How to Set Up an IKEv2 VPN Server with StrongSwan on Ubuntu 20.04
A virtual private network, or VPN, allows you to securely encrypt traffic as it travels through untrusted networks, such as those at the coffee shop, a conference, or an airport.
How To Deploy a Clojure Web Application on Ubuntu 14.04
This article will show you how to deploy a Clojure web application to a Ubuntu 14.04 Droplet.
Ubuntu 18.04 — ruby-gon — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 21 November 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4560-1 Related CVEs: CVE-2020-25739 Upstream summary: It was discovered that Gon gem did not properly escape certain input. An attacker could use this vulnerability to execute a cross-site scripting (XSS) […]
Ubuntu 14.04 LTS – apt update returns 404 from archive mirrors
🟠 High ⏱ 5–30 min Last verified: 21 November 2020 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention […]
Ubuntu 14.04 LTS SSH Public Key Login Suddenly Fails
🟡 Medium ⏱ 5–30 min Last verified: 21 November 2020 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
Ubuntu 20.04 LTS Recurring ext4 Journal Errors on Reboot
🟠 High ⏱ 5–30 min Last verified: 21 November 2020 Affected versions: 20.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
How To Sync Transformed Data from MongoDB to Elasticsearch with Transporter on Ubuntu 14.04
Many times, you might need to migrate data from MongoDB to Elasticsearch in bulk. Writing your own program for this task can be tedious. There is a wonderful open source utility called Transporter, developed by [Compose](https://www.compose.io/) (a cloud platform for databases), that takes care of this task very efficiently. This tutorial shows you how to use the open-source utility Transporter to copy data from MongoDB to Elasticsearch with custom transformations.
Ubuntu 14.04 LTS – apt lock prevents updates during maintenance windows – Fix & Prevention
🟡 Medium ⏱ 5–30 min Last verified: 20 November 2020 Affected versions: Ubuntu 14.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
Ubuntu 16.04 LTS – grub-install fails after disk layout changes – Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 20 November 2020 Affected versions: Ubuntu 16.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
Ubuntu 16.04 LTS – boot drops to initramfs after unclean shutdown – Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 20 November 2020 Affected versions: Ubuntu 16.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
