July 2019 - Page 64 of 69

How To Set Up Time Synchronization on Ubuntu 12.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up Time Synchronization on Ubuntu 12.04

This tutorial covers how to set up time synchronization and ensure that servers are synced using the NTP protocol so that all servers are displaying the same time. When a server’s time is mismatched, emails sent out from the misconfigured server may arrive 3 minutes in the past on another, or users granted access only at certain times of the day may find themselves blocked.

Read more
How to Configure /etc/hosts, /etc/resolv.conf and DNS Resolution on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure /etc/hosts, /etc/resolv.conf and DNS Resolution on RHEL 8

Reliable name resolution is essential for almost every networked service on a Linux server. Red Hat Enterprise Linux 8 gives you several places to configure how hostnames are resolved: the static /etc/hosts file, the resolver configuration in /etc/resolv.conf, the look-up order defined in /etc/nsswitch.conf, and DNS settings managed through NetworkManager. Knowing how these layers interact […]

Read more
Ubuntu 16.04 — exempi — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — exempi — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3668-1 Related CVEs: CVE-2017-18233 CVE-2017-18234 CVE-2017-18236 CVE-2017-18238 CVE-2018-7728 CVE-2018-7729 CVE-2018-7730 CVE-2018-7731 Upstream summary: It was discovered that Exempi incorrectly handled certain media files. If a user or automated system were […]

Read more
How To Create a Riak Cluster on an Ubuntu VPS — step-by-step Linux tutorial on Progressive Robot

How To Create a Riak Cluster on an Ubuntu VPS

This tutorial covers how to set up a Riak Cluster on Ubuntu VPS instances. Riak is a distributed database that offers large performance and redundancy benefits in comparison to traditional relational databases. Riak can be used to create cluster groups that can split up the workload and risk of data storage and access between multiple machines.

Read more
openSUSE Tumbleweed — viewvc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — viewvc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2012-3356 CVE-2012-3357 Upstream summary: The remote SVN views functionality (lib/vclib/svn/svn_ra.py) in ViewVC before 1.1.15 does not properly perform authorization, which allows remote attackers to bypass […]

Read more
Common Problems 118598

Cloud-init stalls first boot networking on cloned images

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~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 […]

Read more
CHAT