Explore information related to nagios

Nagios migration to new Linux server

This article will guide you on steps to #migrate Nagios server to a new Linux server. Nagios provides complete monitoring of #applications and application state – including #Windows applications, #Linux applications, #UNIX applications, and #Web applications.

Main benefits of #Nagios:

1. Increased server, services, process, and application availability.

2. Fast detection of network and server outages and protocol failures.

3. Fast detection of failed servers, services, processes and batch jobs.

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Nagios Web interface not working after upgrade

This article will guide you on how to fix #Nagios web interface not #loading #issue as well as its cause.

Before fixing, First, you need to make sure you have installed all required nagios #packages like nagios3, nagios3-core, and nagios3-cgi. Ensure you did not miss any required package.

If you are still not able to login, you can look at apache configuration and use htpasswd tool to add new username/password to be authorized. You need to find a file like /etc/nagios3/htpasswd.users. This may also be different on redhat. You can recreate the file or create another username/password.

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Set up email settings in Nagios Log Server

This article will guide you on how #Nagios #Log Server sends emails and the effective ways to configure them.

By default, Nagios #Mail notification is sent using /bin/mail command. To change this, modify the definition for notify-host-by-email command and notify-service-by-email command in /etc/nagios/objects/commands. cfg file and configure the mail server accordingly.

Log Server has user-friendly features like a search function. You can refine your logs to a specific purpose, like failed logins, or a specific date, so you can easily find the logs you need. Log Server's customizable home dashboard lets you display log data in a variety of ways, whether that's a map or a bar chart.

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Backup and Restore Nagios Log Server

This article will guide you on the steps to perform #backup and #restore a #Nagios #Log #Server cluster. Taking Backup and Restore of Nagios Log Server helps not to lose any data as it is held in other instances.

Backup and recovery describes the process of creating and storing copies of #data that can be used to protect organizations against data loss. #Recovery from a backup typically involves restoring the data to the original location, or to an alternate location where it can be used in place of the lost or damaged data.

To do a backup and system restore:

1. Click Start.

2. Go to Control Panel.

3. Go to System and Security.

4. Click Backup and Restore.

5. At the Back up or restore your files screen, click Restore my files. 

6. Browse to locate the backup file. 

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Steps to Back Up And Restore Nagios System

This article will guide you on how to perform #Backup and #Restore of the #Nagios System are important aspects of the #administration and #maintenance of the #system. 

Backups are an important aspect of administration and maintenance of your system. They can easily facilitate the #migration of a Nagios XI #installation between a virtual server and physical server, and the design of a fail-over or #disaster #recovery instance of Nagios XI.

There are three main types of backup: full, incremental, and differential:

1. #Full backup. As the name suggests, this refers to the process of copying everything that is considered important and that must not be lost.

2. #Incremental backup. 

3. #Differential backup.

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Nagios Authentication and Importing Users with AD and LDAP

This article will guide you on how to integrate #Nagios Log Server with Active Directory or #LDAP to allow user authentication and validation with the Nagios Log Server interface.
Currently by default LDAP traffic (without SSL/TLS) is unsigned and unencrypted making it vulnerable to man-in-the-middle attacks and eavesdropping. After the patch or the windows update would be applied, LDAPS must be enabled with Active Directory.
To Set up Active Directory Authentication using LDAP:
1. Enter the LDAP "Server" and "Port" attributes on the Server Overview tab of the LDAP Users page.
2. Enter the proper base for the Active Directory in the "Base DN" attribute.
3. Set the Search Scope.
4. Enter the Username Attribute.
5. Enter the Search Filter.
6. Verify that the settings are correct by clicking the Verify button.

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Monitoring VMware with Nagios XI

This article will guide you on the steps to Monitor VMware with #Nagios.
To Monitor the VMware host
i. Enter the Address, Username and Password of your #ESX / #ESXi host.
ii. Select Monitor the #VMware #Host.
iii. Click Next to go to Step 2.
iv. On step 2 you will configure all of the options for #monitoring.

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Send Syslog with SSL TLS to Nagios Log Server

This article will guide you on how to Send #Syslog with #SSL / #TLS to Nagios Log Server by encryption which ensures that the #traffic between the #Linux machine and Nagios Log Server is not sent in plain text.

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Integrate SNMP traps with Nagios

This article will guide you on how to integrate SNMP traps with #Nagios. #SNMP can comprehensively monitor not only the network elements like #routers and #switches, but can also be used to monitor #network servers. Details like server hardware description, physical location, IP address, available disk space and server uptime can be monitored through SNMP.

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Modify Data Store Path in Nagios Log Server

This article will guide you on the process to modify the data #storage location in a #Nagios #Log #Server.

The Nagios Core log, includes checks, notifications, external #commands, and events. This file is rotated daily into the /usr/local/nagios/var/archives folder by default setting in nagios.

Changing Data Path In Nagios Log Server involves: 

DATA_DIR="$ES_HOME/data" Modify it to the new path you would like to use: DATA_DIR="/new/path/data" Save the file and exit vi. The time it takes to move your existing data will vary depending on how much data there is and the speed of the source and destination #paths.

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Create a Nagios log server instance in Amazon EC2 cloud

This article will guide you on how to create a #Nagios log server instance in the amazon ec2 #cloud. To enable these reports, simply enable Detailed Billing Reports With #Resources and Tags for your account. Then open up the Reports tab of the Billing #Console. From there you can look at the EC2 Instance Usage Report and the #EC2 Reserved Instance Utilization Report.

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Send NXLogs with SSL TLS to Nagios Log Server

This guide will guide you on how to send NXLogs with SSL/TLS to #Nagios #Log #Server. Encryption ensures that the traffic between the #Windows machine and Nagios Log Server is not sent in plain text.

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Monitoring Performance Counters in Nagios XI Using NCPA

This article will guide you on how to configure #Nagios XI to monitor performance counters by monitoring Performance Counters in Nagios XI is possible using #NCPA as well as use cases where real-time monitoring actually provides no benefit at all, and may also be both a distraction and a detriment to monitoring #teams and #admins.

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Monitoring squid proxy server with Nagios log server

This article will guide you on how to configure the #Nagios log server to use a #proxy server.

#Squid is a caching and forwarding #HTTP web proxy. It has a wide variety of uses, including speeding up a web server by caching repeated requests, #caching web, #DNS and other computer network #lookups for a group of people sharing network resources, and aiding security by filtering #traffic.

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Configure Nagios log server to use a proxy server

This article will guide you on the steps to configure the #Nagios log server to use a #proxy server.

In order to #monitor the server using Nagios Core, you will need to add the host and services to nagios #server from the command line. 

#Logs located in the /usr/local/nagios/var/archives folder are used as the data source for the Availability and #SLA #reports.

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Debugging Bandwidth Performance Graphs in Nagios

This article will guide you through the steps to perform #debugging of #bandwidth #performance #graphs in #Nagios.

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Logs Not Searchable or Not Coming In Nagios Log Server

This article will guide you in solving #Logs Not Searchable or Not Coming In #Nagios Log #Server which occurs in the process of running a query in the Nagios dashboard.

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Crashed Database Tables in Nagios XI

This article will guide you through the steps to fix Crashed #Database #Tables in #Nagios which occurs if the #MySQL process appears to be consuming large amounts of #CPU.

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RAM Disk in Nagios XI

This article will guide you on how to make use of a RAM disk can provide huge performance improvements on larger systems or any system where check latencies are greater than 2 seconds.

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Scheduling Reports in Nagios Log Server Process to do it

This article will guide you on the steps to manage users in Nagios Log Server by Scheduling Reports in Nagios Log Server which is used by Nagios Log Server Administrators to automate reporting.

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Set up Inputs in Nagios Log Server

This article will guide you on how to configure inputs in nagios log server via different methods. 

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Running Out Of Disk Space On The Nagios XI VM

This article will guide you on how to fix 'running out of disk space on the Nagios' problem.

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Nagios Log Server To Monitor A New Log Source

This article will guide you through the steps to need to take to configure Nagios log server to monitor a new log source.

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Process of forwarding Nagios Log Server to another Destination

This article will guide you on the steps to forward Nagios log to another server by creating a new output in NLS.

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Configuration File Is Out Of Date in Nagios

This article will guide you on the different methods to fix Nagios error "Configuration File Is Out Of Date" in CCM after applying configuration changes in Nagios due to incorrect configuration of system time.

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Nagios login screen redirects to itself Steps to fix it

This article will help to resolve Nagios login screen redirecting to itself which occurs due to a mismatch in the time zone can cause the Nagios login screen to redirects to itself after entering the login credentials.

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Install Nagios XI in an offline environment

This article will guide you on how to install Nagios XI in an offline environment using powershell.

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How to install the Anaconda Python on Ubuntu

This article will guide you on how to install, setup, update, and uninstall Anaconda which involves a series of steps to install and setup the Anaconda environment.

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Steps to install Wraith on Ubuntu

This article will guide you on how to install Wraith on Ubuntu which requires adding Ruby, ImageMagick, and some other dependencies added to the system.

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Gradle Installation and Configuration on Linux

This guide will show the steps to install and configure Gradle on Linux and Windows.

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Performance graph problems in Nagios

This article will help to fix performance issues in Nagios when performance graphs does not display the correct data even though their checks return true performance data. 

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How to fix Nagios bandwidth graph showing 0 MB in Non-English Systems

This guide will show you the steps to fix Nagios bandwidth graph showing 0 MB issue.

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Last Check Time Not Updating in Nagios XI

This guide will help you to solve Nagios error "Last Check Time Not Updating" which affects Nagios XI.

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How to forward Windows logs to Nagios log server

This article will guide you on how to configure forwarding Windows logs to the Nagios log server.

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How to fix Nagios error XI installation script fails when installing dependency pymssql

This article will help to fix Nagios error experienced during XI installation when its script fails in the process of installing dependency pymssql which occurs as a result of missing packages in the Server repositories. 

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How to fix nagios error in the process of converting svg

This article will guide you on fixing Nagios error in the process of converting SVG files in the process of working with a performance graph as a PNG, JPEG image in Nagios XI.

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How to fix Nagios error could not create or update nagios configtest

This article will guide you on how to fix Nagios Error: could not create or update nagios.configtest which stops Nagios from starting correctly.

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How to fix scheduled backups no longer working in Nagios

This article will guide you on how to solve Nagios scheduled backups failure which occurs when the database is currupted.

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Nagios error while trying to delete host

This article will guide you on how to solve Nagios hosts deletion issues when you are not able to delete the host in Nagios.

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How to fix Nagios error processing object config files

This article will guide and help you to fix Nagios failure to start error due to error processing object config files.

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Unable to login to Nagios XI web interface

Sometimes, Nagios users experience login issues and are unable to Log into the Nagios XI web interface due to a number of reasons ranging from the wrong password to the SELinux policy.

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Nagios error unable to open include file

This guide will help to fix "Nagios error: unable to open include file: conf.d/*.cfg" which occurs when the MRTG version is too old or having 1000+ cfg files in the /etc/mrtg/conf.d/ directory.

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Nagios did not exit in a timely manner

This article will guide you on how to solve "Nagios did not exit in a timely manner" error which happens in the process of stopping or restarting the Nagios in larger deployments. 

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How to install and configure cacti on Linux

Steps to install and configure Cacti which is network monitoring tool which displays server efficiency information in form of a personalized graph.

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Solution to Nagios access forbidden error 403

Most efficient way to fix Nagios access forbidden error 403.

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