Troubleshooting

Common Problems 113554

Windows Server 2016 – Failover cluster groups flap due to aggressive failback settings – Fix & Prevention (FIX-PREVENTION-2)

🟡 Medium   ⏱ 5–30 min  Last verified: 18 May 2026 Affected versions: Windows Server 2016 📖 ~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 […]

Read more
How to Migrate Workloads from RHEL 9 to RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Migrate Workloads from RHEL 9 to RHEL 10

Introduction Setting up migrate workloads from rhel 9 to rhel 10 on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Migrate Workloads from RHEL 9 to RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep […]

Read more
SLES 15 — jakarta-commons-fileupload — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — jakarta-commons-fileupload — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2016:2188-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-3092 CVE-2016-1000031 Upstream summary: The MultipartStream class in Apache Commons Fileupload before 1.3.2, as used in Apache Tomcat 7.x before 7.0.70, 8.x before 8.0.36, 8.5.x […]

Read more
How to Configure strongSwan IPsec VPN on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure strongSwan IPsec VPN on RHEL 10

Introduction This tutorial demonstrates how to Configure strongSwan IPsec VPN on RHEL 10 on RHEL 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered RHEL 10 system with the default AppStream repositories […]

Read more
SLES 15 — bash — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — bash — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2014:1212-1 (see also SUSE bugzilla) Related CVEs: CVE-2014-6271 CVE-2014-6277 CVE-2014-6278 CVE-2014-7169 CVE-2014-7186 CVE-2014-7187 CVE-2016-9401 CVE-2014-2524 Upstream summary: GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment […]

Read more
How to Set Up Apache Tomcat 10 on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up Apache Tomcat 10 on RHEL 10

Introduction Setting up set up apache tomcat 10 on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Apache Tomcat 10 on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

Read more
openSUSE Tumbleweed — netdata — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — netdata — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:0647-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-18836 CVE-2018-18837 CVE-2018-18838 CVE-2018-18839 Upstream summary: An issue was discovered in Netdata 1.10.0. JSON injection exists via the api/v1/data tqx parameter because of web_client_api_request_v1_data in […]

Read more
Common Problems 117961

Ubuntu 18.04 Time Sync Drift Causes TLS and Login Issues

🟡 Medium   ⏱ 5–30 min  Last verified: 19 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
Gentoo Linux — app-crypt/libu2f-host — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-crypt/libu2f-host — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202004-15 Related CVEs: CVE-2018-20340 CVE-2019-9578 Upstream summary: Multiple vulnerabilities have been discovered in libu2f-host. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

Read more
Common Problems 115612

Excessive journal logs consume storage

🟡 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