NGINX Logs Explained: Access and Error Log Guide
Configure and analyze NGINX access and error logs. Learn log formats, severity levels, troubleshooting, and integration with monitoring tools.
How to Configure Certificate Auto-Enrollment via Group Policy on Windows Server 2012 R2
How to Configure Certificate Auto-Enrollment via Group Policy on Windows Server 2012 R2 Certificate auto-enrollment allows domain computers and users to automatically request, receive, and renew digital certificates from an Enterprise CA without any manual intervention. This eliminates the administrative burden of manually issuing certificates to hundreds or thousands of devices and users, ensures certificates […]
openSUSE Tumbleweed — jackson-databind — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🔴 Critical ⏱ 15–90 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE security advisory Related CVEs: CVE-2018-11307 CVE-2018-14718 CVE-2018-14721 CVE-2018-19360 CVE-2018-19361 CVE-2019-14379 CVE-2019-14893 CVE-2019-16942 +12 more Upstream summary: An issue was discovered in FasterXML jackson-databind 2.0.0 through 2.9.5. Use of Jackson default typing along with […]
Navigator’s Guide: Preface
How do I scale and grow my infrastructure for my business?
How To Use Unions in SQL
When retrieving data from a database, you may need to refer to more than one table at a time. In Structured Query Language (SQL), you can use the `UNION` operation, which takes the results of two queries with matching columns and merges them into one. In this guide, you will use `UNION` operations to retrieve data from more than one table simultaneously and combine the results. You will also combine the `UNION` operator with filtering to order the results.
Manage Systemd Services with systemctl on Linux
Learn how to use systemctl to manage systemd services and units in Linux. Control startup, shutdown, and more. Follow this step-by-step guide.
How To Use Alertmanager and Blackbox Exporter to Monitor Your Web Server on Ubuntu
When problems arise, sending alerts to the appropriate team significantly speeds up identifying the root cause of an issue, allowing teams to resolve incidents quickly. Prometheus is an open-source monitoring system that collects metrics from…
How to Configure Windows Server Failover Clustering with SQL Server on Windows Server 2016
How to Set Up Windows Server Failover Cluster (WSFC) with SQL Server on Windows Server 2016 A Windows Server Failover Cluster (WSFC) forms the foundation for SQL Server high availability solutions including SQL Server Failover Cluster Instances (FCI) and Always On Availability Groups. An FCI presents a single SQL Server instance that is hosted on […]
How To Install MySQL on Ubuntu 18.04
MySQL is an open-source database management system, commonly installed as part of the popular LAMP (Linux, Apache, MySQL, PHP/Python/Perl) stack. It uses a relational database and SQL (Structured Query Language) to manage its data. This tutorial will explain how to install MySQL version 5.7 on an Ubuntu 18.04 server.
FreeBSD 12 — qemu-sbruno — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: qemu — denial of service vulnerability Related CVEs: CVE-2015-1779 CVE-2015-3209 CVE-2015-3214 CVE-2015-3456 CVE-2015-5154 CVE-2015-5158 CVE-2015-5165 CVE-2015-5166 +12 more Upstream summary: Daniel P. Berrange reports: The VNC server websockets decoder will […]
