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Nagios Log Server - Updating Logstash Patterns
Overview This article shows you how to update the Logstash patterns on Nagios Log Server. This might resolve issues with logs not being parsed which can lead to a _grokparsefailure. Instructions Open an SSH session to a Nagios Log Server node. Typ... Read More
Nagios Log Server - Logstash process dying
Problem Description You experience problems with the Logstash process dying. On the console of your server you observe the following:: INFO: [6a7ce4ea-e1b9-47a1-af18-1c4d47243d20] failed to get node info for [#transport#-1][sa585][inet[localhost/127.... Read More
Nagios Log Server - Logstash not running after upgrade to 2.0
Overview After upgrading to Nagios Log Server 2.0, the logstash service doesn't remain running. Diagnosis The /var/log/logstash/logstash.log file will show a message similar to: {:timestamp=>"2017-11-14T08:24:17.314000-0700", :message=>... Read More
Nagios Log Server - Logs Not Searchable or Not Coming In
Overview When running a query in a dashboard, logs are not showing up when they should be. This guide will go through the steps to diagnose what is causing the issue. This article will use a scenario of a remote server sending syslogs to help provide... Read More
Nagios Log Server - Overview And Terminology
High Level Overview Nagios Log Server is an application that provides organizations a central location to send their machine generated data, (e.g., Windows Eventlogs, Linux syslogs, mail server logs, web server logs, application logs, etc.), which ... Read More
Nagios Log Server - Configuration Overview
Log Server Configuration Overview Nagios Log Server utilizes logstash for collecting logs from various systems. Logstash has an extensive list of different inputs, filters and outputs available, and Log Server gives users the ability to configure t... Read More
Nagios Log Server - Poller Subsystem Architecture
Poller Subsystem Overview The poller subsystem of Nagios Log Server runs on every instance. In addition to updating the elasticsearch database with the current running configuration, the poller subsystem also updates service state information for all... Read More
Nagios Log Server - Jobs Subsystem Architecture
Jobs Subsystem Overview The jobs subsystem of Nagios Log Server runs on every Log Server instance, and is responsible for running jobs that are scheduled to run. Jobs can be scheduled to run on a specific instance (local jobs) or they can be run on... Read More
Nagios Log Server - Understanding and Troubleshooting Red Cluster Health
Problem Description Nagios Log Server is in a red health state. You can see the current cluster state by navigating to (Administration -> Cluster Status): The cluster can be in one of three states: Green: All primary and replica shards are ... Read More
Nagios Log Server - Full Architecture Overview
High-Level Overview Nagios Log Server is an application that provides organizations a central location to send their machine generated event data (e.g., Windows Event Logs, Linux syslogs, mail server logs, web server logs, application logs) which w... Read More
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