Download nagios core

Devices on a network, which get registered into an inventory. This listing is the basis of a network topology map, which is drawn on demand. The Ping tests are also shown as device or server uptime graphs in the OpManager dashboard.Pros:Designed to work right away, features over 200 customizable widgets to build unique dashboards and reportsLeverages autodiscover to find, inventory, and map new devicesUses intelligent alerting to reduce false positives and eliminate alert fatigue across larger networksSupports email, SMS, and webhook for numerous alerting channelsIntegrates well in the ManageEngine ecosystem with their other productsCons:Is a feature-rich tool that will require a time investment to properly learnPrice: OpManager is available in four editions:Free for up to three devices — $0Standard starting at a price to monitor 10 devices — $245Professional starting at a price to monitor 10 devices — $345Enterprise starting at a price to monitor 250 devices — $11,545Download: OpManager installs on Windows Server or Linux. You can get a 30-day free trial at: Free Trial!4. Nagios XINagios develops Nagios Core and Nagios XI, which are network monitoring and management software. The first one, Nagios Core is a free and open source software; it can monitor your entire infrastructure, networks, and servers. It also includes a powerful alerting system. The other tool, Nagios XI is the advanced and enterprise version of the Nagios Core. It is super easy to use and comes with many features.Nagios Core and XI, come with complete ping monitoring capabilities, which include packet loss and reachability. Both tools can help you monitor and improve the availability of your network.Thanks to the popular Nagios community, you can improve the product with third-party plugins. For example, you can use the check_ping command plugin to keep track of the ping results of a remote server. You can also configure it to send notifications based on certain threshold levels.This plugin can give information such as:Round trip average in msPercentage of packet lossGraphicsNagios XI is supported by CentOS or RHEL (Red Hat Enterprise Linux) versions 5, 6, or 7.Pros:Simple, yet informative interfaceFlexible alerting options support SMS and emailA wide range of community-designed plugins are available for freeCons:The open-source version lacks the support found in paid productsPrice: Nagios Core is a free and open source software. The cost for Nagios XI starts at $1,995 (USD).Download: Get a 60 day free trial of Nagios XI or download open source Nagios Core for free.5. SolarWinds Engineer’s ToolsetSolarWinds offers Ping Monitoring functionality through the Engineer’s Toolset, which is a bundle of network software including over 60 tools, such as Automated network discovery, Real-time monitoring and alerting, Configuration & log management, and a lot more.Before starting to ping your network, you can run the auto-discovery. This

This post is to document my Nagios Core 4.4.6 and NagiosQL 3.4.1 installation on CentOS 7. They are the latest available version at the time of this writing (May 2020). The main reason of this post is I cannot find the updated instruction to install the latest version of NagiosQL on CentOS 7. When I follow the instruction on the outdated blog posts, I run into some issues. For example, the official CentOS 7 repository only has PHP 5.4, but NagiosQL 3.4.1 requires PHP 5.5.0 or later; and MySQL is no longer in CentOS repository. Another reason is I want to install the latest version packages (e.g. PHP 7.4), instead of the older version. Nagios Core and Nagios Plugins Installation on CentOS 7 I follow the instruction on Nagios Support Knowledgebase without any major issue. The only modification is to get the latest version of Nagios Core 4.4.6, instead of 4.4.5; and the latest version of the Nagios Plugin 2.3.3, instead of 2.2.1. NagiosQL Installation on CentOS 7 1. Install PHP 7.4 from Remi and EPEL repositories As I mention earlier, the official CentOS 7 repository only has PHP 5.4. This doesn’t meet the NagiosQL 3.4.1 requirement. You can check the installed PHP version by php -v. yum install epel-releaseyum install install yum-utils### install PHP 7.4yum-config-manager --enable remi-php74yum install php php-mcrypt php-cli php-gd php-curl php-mysql php-ldap php-zip php-fileinfo### verify PHP 7.4 is installedphp -v2. Install MySQL from the community repositoryI follow the instruction on this post without any issue.wget -ivh mysql-community-release-el7-5.noarch.rpmyum updateyum install mysql-serversystemctl start mysqld### change MySQL root password, remove anonymous user accounts, disable root logins outside of localhost, and remove test databasesmysql_secure_installation3. Install NagiosQL required packagesyum install libssh2 libssh2-devel mysql php-mysql php-pear php-devel### install ssh2.so version 1.2 beta that support PHP 7.4pecl install ssh2-1.2### add extension=ssh2.so to /etc/php.ini under Dynamic Extensionsvi /etc/php.ini4. Download and extract NagiosQL 3.4.1 archive in Nagios document root (/usr/local/nagios/share)cd /usr/local/nagios/sharecurl -L -O xzf nagiosql-3.4.1-git2020-01-19.tarmv nagiosql-3.4.1 webadminchown -R nagios:nagios webadmin/### create the NagiosQL configuration directorymkdir /usr/local/nagios/nagiosqlchown -R apache:apache /usr/local/nagios/nagiosql/5. Set up PHP Timezone and restart Apache web serverSee here to get the list of timezone###

You are using Zabbix in a commercial context, you can buy their support.Download:Free Zabbix and start monitoring your business and office LAN.6. Nagios Core and Nagios XINagios develops IT infrastructure monitoring and management software.They offer two products, the Nagios Core, which is free and open-source and Nagios XI, which is the enterprise-version.Both products can monitor your entire IT infrastructure, including networks, servers, clients, bandwidth, traffic, etc.Nagios sends alerts and notifies the user when a predefined threshold is reached.There are, of course, some differences with both products.Nagios Core requires more skills to deploy and maintain. To get the most out of Nagios Core, the user needs to be proficient in Linux and scripting. The product also lacks many other essential features, as compared to Nagios XI.Nagios Core is an excellent option if you are looking for a free comprehensive LAN monitoring system, but are ok with a lack of reporting and dashboard flexibility.On the other hand, with Nagios XI, you can monitor your LAN in real-time and get insightful reports with charts and graphs.Nagios can quickly help you identify network problems, outages, overloaded servers, and more.Keeping track of your LAN availability and uptime can help you maintain a healthy network.Key Features:Monitor your network without agents using SNMP.Find failures or entire outages in LAN segments and send alerts.Provide a high-level reporting (Nagios XI).Price:Nagios Core is a free and open-source software.Nagios XI comes in two different priced editions starting at $1,995 for a standard license and $3,495 for an Enterprise license.Download:Get free Nagios Core, or get a limited 60-days-trial version of Nagios XI.7. IcingaIcinga is another free and open-source IT infrastructure availability and performance monitoring tool.It was created by a group of developers from the Nagios Community.Icinga helps network admins monitor IT infrastructures of different sizes, from SMBs to enterprises.The software can collect

Set date.timezone = 'America/Los_Angeles'vi /etc/php.inisystemctl restart httpd6. Start NagiosQL web installer Open the URL in a browser: Click Start Installation Verify the system meets all the requirements. Here is where I found out the PHP 5.4 in CentOS 7 doesn’t meet the requirement Click Next On NagiosQL Installation: Setup page Enter NagiosQL DB password, root password (the root password is MySQL root password), and NagiosQL admin password Check the checkboxes “Drop database if already exists?” “Import Nagios sample config?” (optional) “Create NagiosQL config paths?” set NagiosQL config path: /usr/local/nagios/nagiosql set Nagios config path: /usr/local/nagios/etc Click Next On NagiosQL Installation: Finishing Setup page, it should be all green if everything is right Delete the NagiosQL install directory 7. Access NagiosQL web UI Open the URL in a browser: login with NagiosQL admin and password 8. Integrate NagiosQL with Nagios Navigate to Administration -> Administration -> Config targets Click Modify icon next to localhost On Configuration domain administration page Configuration directories section should be all set. No change is needed Nagios configuration files and directories section, verify the following settings Nagios base directory: /usr/local/nagios/etc/ Import directory: /usr/local/nagios/etc/objects/ Picture base directory: (blank) Nagios command file: /usr/local/nagios/var/rw/nagios.cmd Nagios binary file: /usr/local/nagios/bin/nagios Nagios process file: /run/nagios.lock Nagios config file: /usr/local/nagios/etc/nagios.cfg Nagios cgi file: /usr/local/nagios/etc/cgi.cfg Nagios resource file: /usr/local/nagios/etc/resource.cfg Select 4.x in Nagios version Leave Access group “Unrestricted access” Check Active checkbox Click Save Edit Nagios Core configuration file Edit Nagios configuration file /usr/local/nagios/etc/nagios.cfg Comment all cfg_file and cfg_dir entries Add the following cfg_file and cfg_dir entries cfg_file=/usr/local/nagios/nagiosql/commands.cfgcfg_file=/usr/local/nagios/nagiosql/contactgroups.cfgcfg_file=/usr/local/nagios/nagiosql/contacts.cfgcfg_file=/usr/local/nagios/nagiosql/contacttemplates.cfgcfg_file=/usr/local/nagios/nagiosql/hostdependencies.cfgcfg_file=/usr/local/nagios/nagiosql/hostescalations.cfgcfg_file=/usr/local/nagios/nagiosql/hostextinfo.cfgcfg_file=/usr/local/nagios/nagiosql/hostgroups.cfgcfg_file=/usr/local/nagios/nagiosql/hosttemplates.cfgcfg_file=/usr/local/nagios/nagiosql/servicedependencies.cfgcfg_file=/usr/local/nagios/nagiosql/serviceescalations.cfgcfg_file=/usr/local/nagios/nagiosql/serviceextinfo.cfgcfg_file=/usr/local/nagios/nagiosql/servicegroups.cfgcfg_file=/usr/local/nagios/nagiosql/servicetemplates.cfgcfg_file=/usr/local/nagios/nagiosql/timeperiods.cfgcfg_dir=/usr/local/nagios/nagiosql/hostscfg_dir=/usr/local/nagios/nagiosql/services 9. Verify Nagios Core config files/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfgWhen I run the above command, I get the error message of missing command.cfg file, etc. I go back to NagiosQL web UI, in each main section Supervision, Alerting, Commands, and Specialties, click “Write config file” to generate these files. Then the command reports no error or warning.10. Restart Nagios Core servicesystemctl restart nagiosNow Nagios Core and NagiosQL are successfully set up. You can view the monitoring status in the Nagios web UI and modify the monitoring via NagiosQL web UI.

Nagios Core - Performance Graphs Using PNP4NagiosThis documentation explains how to configure Nagios Core to use the PNP4Nagios program to generate performance graphs.When Nagios Core receives check results from Host and Service checks, the check result can include performance data. This performance data needs to be specifically formatted as per the following guidelines:Nagios Plugins Development Guidelines - Performance DataNagios Core does not have it's own performance data engine built in to process this performance data, instead it provides functionality to pass this performance data to an external program that can store that data for later analysis.PNP4Nagios is one such external program. PNP4Nagios provides the following functionality:Process and store the received performance data in Round Robin Database (RRD) filesA GUI to display the data in the RRD files from within the Nagios Core interfaceDO NOT follow this guide if you are using Nagios XI. Nagios XI includes a specific version and configuration of PNP4Nagios and following this guide will result in breaking your Nagios XI installation.This guide is broken up into several sections and covers different Linux distributions and operating systems (OS). If your Linux Distribution or operating system is not included in this guide then please contact us to see if we can get it added. Some distributions may be missing as we don't have access to a test environment that allows us to develop the documentation.PNP4Nagios 0.6.26 running on Nagios Core 4.4.3 is what this guide instructs you to install, however future versions should also work fine with these steps.Note: This guide is based on Nagios Core being installed using the following KB article:Documentation - Installing Nagios Core From SourceBecause this guide is based on Nagios Core already being installed, prerequisites like Apache and PHP will already be installed on the Nagios Core server, they will only be re-installed if your OS requires that to enable a module.Please select your OS:Red Hat Enterprise Linux (RHEL)CentOSOracle LinuxUbuntuSUSE SLES | openSUSE LeapDebianRaspbianFedoraArch LinuxGentooFreeBSDRHEL | CentOS | Oracle LinuxPrerequisitesPerform these steps to install the pre-requisite packages.===== RHEL 5 | CentOS 5 | Oracle Linux 5 =====yum install -y rrdtool perl-rrdtool php-gdcpan -f -i Time::HiRes If CPAN has not been run before you will need to answer a series of questions, usually accepting the default choice using Enter will suffice.===== RHEL 6/7 | CentOS 6/7 | Oracle Linux 6/7 =====yum install -y rrdtool perl-rrdtool perl-Time-HiRes php-gd===== RHEL 8 =====dnf install -y rrdtool perl-rrdtool

&& sizeof($pages)>0) in both places it exists in the file.Refresh the page.Nagios Core Web Interface IntegrationPNP4Nagios can also be integrated into the Nagios Core web interface, this is quite useful however it does require some changes to your Nagios object definitions.Nagios Core uses the action_url directive in object definitions to provide an icon/link when viewing host or service objects in the web interface.This means that every object in Nagios Core requires the action_url directive to be defined. This can be easily achieved by using a template and using that template in your object definitions.In a fresh installation of Nagios Core the following host and service templates need to be added to /usr/local/nagios/etc/objects/templates.cfg file:define host { name host-pnp action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_ register 0}define service { name service-pnp action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$ register 0}To make the required changes above you can manually edit the file, or the following commands will add those templates for you:RHEL | CentOS | Oracle Linux | Debian | Raspbian | Fedora | FreeBSD | Arch Linux | Gentooecho '' >> /usr/local/nagios/etc/objects/templates.cfgecho 'define host {' >> /usr/local/nagios/etc/objects/templates.cfgecho ' name host-pnp' >> /usr/local/nagios/etc/objects/templates.cfgecho ' action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_' >> /usr/local/nagios/etc/objects/templates.cfgecho ' register 0' >> /usr/local/nagios/etc/objects/templates.cfgecho '}' >> /usr/local/nagios/etc/objects/templates.cfgecho '' >> /usr/local/nagios/etc/objects/templates.cfgecho 'define service {' >> /usr/local/nagios/etc/objects/templates.cfgecho ' name service-pnp' >> /usr/local/nagios/etc/objects/templates.cfgecho ' action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$' >> /usr/local/nagios/etc/objects/templates.cfgecho ' register 0' >> /usr/local/nagios/etc/objects/templates.cfgecho '}' >> /usr/local/nagios/etc/objects/templates.cfgecho '' >> /usr/local/nagios/etc/objects/templates.cfgUbuntu | SLES | openSUSEsudo sh -c "echo '' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo 'define host {' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo ' name host-pnp' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo ' action_url /pnp4nagios/index.php/graph?host=\$HOSTNAME\$&srv=_HOST_' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo ' register 0' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo '}' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo '' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo 'define service {' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo ' name service-pnp' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo ' action_url /pnp4nagios/index.php/graph?host=\$HOSTNAME\$&srv=\$SERVICEDESC\$' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo ' register 0' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo '}' >> /usr/local/nagios/etc/objects/templates.cfg"sudo sh -c "echo '' >> /usr/local/nagios/etc/objects/templates.cfg"Then to use those templates you need to include them in your host and service directives. This example will update the generic-host and generic-service templates to include these templates, here is how they should look:define host{ name generic-host ; The name of this host template use host-pnpdefine service{ name generic-service ; The 'name' of this service template use service-pnpIn the example above the remaining options in the default templates have been omitted, there is no point showing all of those