Linux

How To Use the Net-SNMP Tool Suite To Manage and Monitor Servers — step-by-step Linux tutorial on Progressive Robot

How To Use the Net-SNMP Tool Suite To Manage and Monitor Servers

SNMP is a mature network management protocol that can be used to retrieve information and set values on remote systems. In previous guides, we discussed the basics of the protocol and how to get setup with an SNMP client and daemon. In this guide, we’ll cover some of the ways you can use the tools included to get information and manipulate fields on remote machines.

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Oracle Linux 8 — mod_auth_openidc:2.3 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — mod_auth_openidc:2.3 — security and stability fixes — required update (ELSA-2023-6940)

🟡 Medium   ⏱ 10–30 min  Last verified: 22 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6940 Related CVEs: CVE-2022-23527 CVE-2023-28625 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 118952

Ubuntu 14.04 LTS DNS lookups time out intermittently

🟠 High   ⏱ 5–30 min  Last verified: 22 October 2020 Affected versions: 14.04 📖 ~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 […]

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Common Problems 118946

Ubuntu 14.04 LTS – DNS resolution intermittently fails on servers – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 October 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 […]

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SLES 15 — groovy-lib — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — groovy-lib — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 October 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:3917-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-17521 Upstream summary: Apache Groovy provides extension methods to aid with creating temporary directories. Prior to this fix, Groovy's implementation of those extension methods was […]

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Common Problems 117889

Ubuntu 18.04 Stuck on Boot Splash After Kernel Update

🟡 Medium   ⏱ 5–30 min  Last verified: 22 October 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 […]

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Common Problems 117393

Ubuntu 20.04 LTS – apt update fails with NO_PUBKEY for third-party repository – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 October 2020 Affected versions: Ubuntu 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 […]

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How To Set Up nginx Virtual Hosts (Server Blocks) on Ubuntu 12.04 LTS — step-by-step Linux tutorial on Progressive Robot

How To Set Up nginx Virtual Hosts (Server Blocks) on Ubuntu 12.04 LTS

This tutorial shows you how to set up a new directory, how to grant the correct permissions, how to add content to a new page, how to turn on virtual hosting, and how to, if needed, set up local hosts. Virtual Hosts are used to run more than one website or domain off of a single server and IP address. When used with nginx, virtual hosts are called Server Blocks. This tutorial covers setting up server blocks on an Ubuntu server.

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How To Install CouchDB and Futon on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Install CouchDB and Futon on Ubuntu 14.04

[Apache CouchDB](http://couchdb.apache.org/), like Redis, Cassandra, and MongoDB, is a *NoSQL database*. CouchDB stores data as JSON documents which are non-relational in nature. This allows users of CouchDB to store data in ways that look very similar to their real world counterparts.

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