Linux

How To Use Logstash and Kibana To Centralize Logs On Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Use Logstash and Kibana To Centralize Logs On Ubuntu 14.04

In this tutorial, we will go over the installation of Logstash 1.4.2 and Kibana 3, and how to configure them to gather and visualize the syslogs of our systems in a centralized location. Logstash is an open source tool for collecting, parsing, and storing logs for future use. Kibana 3 is a web interface that can be used to search and view the logs that Logstash has indexed.

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Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide (ELSA-2019-1580)

🟠 High   ⏱ 15–60 min  Last verified: 8 January 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-1580 Related CVEs: CVE-2019-10161 CVE-2019-10166 CVE-2019-10167 CVE-2019-10168 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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openSUSE Tumbleweed — msmtp — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — msmtp — vulnerability — 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-2019-8337 Upstream summary: In msmtp 1.8.2 and mpop 1.4.3, when tls_trust_file has its default configuration, certificate-verification results are not properly checked. Table of contents Symptom […]

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Common Problems 115525

RHEL 7 sshd Fails Start Due To StrictModes Permissions

🟠 High   ⏱ 5–30 min  Last verified: 7 January 2020 Affected versions: RHEL 7 📖 ~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 & […]

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Alpine Linux edge — pango — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — pango — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.44.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — pango 1.44.1-r0 Related CVEs: CVE-2019-1010238 Upstream summary: Alpine main repository for vedge ships pango 1.44.1-r0 which addresses CVE-2019-1010238. Table of contents Symptom & Impact Environment […]

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openSUSE Tumbleweed — libXi6 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libXi6 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2013:1103-1 (see also SUSE bugzilla) Related CVEs: CVE-2013-1984 CVE-2013-1995 CVE-2013-1998 Upstream summary: Multiple integer overflows in X.org libXi 1.7.1 and earlier allow X servers to trigger allocation of insufficient memory and a […]

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How To Use Vim for Advanced Editing of Plain Text or Code on a VPS — step-by-step Linux tutorial on Progressive Robot

How To Use Vim for Advanced Editing of Plain Text or Code on a VPS

Vim is a powerful text editor that can be used to edit both normal text documents and source code for programming. It excels at both of these tasks by being flexible and having functions that adapt well to either circumstance. In this guide, we will demonstrate how to leverage some of these functions to edit more efficiently.

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openSUSE Tumbleweed — libmysql56client18 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libmysql56client18 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2016:2746-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-3521 CVE-2016-6662 CVE-2015-2582 CVE-2015-2611 CVE-2015-2617 CVE-2015-2641 CVE-2015-2643 CVE-2015-2648  +12 more Upstream summary: Unspecified vulnerability in Oracle MySQL 5.5.49 and earlier, 5.6.30 and earlier, and 5.7.12 […]

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