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Configuring e Mail Notifications in Nagios Core www. Linked to my multi part series on using Nagios Core with Exchange server, I would like to explain how you can configure mail notifications to recipients when status changes occur within the Nagios monitoring environment. If you are just joining us here, I recommend that you have a look at the series in its entirety before reading any further, as there are a few concepts used in this article which were covered in depth within previous four parts. You can view them here In Part 1. I covered how you can install Nagios Core 3. Ubuntu 1. 1. 1. 0 server within your environment. In Part 2. I covered how you can setup basic monitoring on your first Windows Server making use of the NSClient, I also covered how you could setup a basic checknt monitoring service. Betty Crocker Cookbook 9Th Edition. In Part 3. I covered how you can install the NRPE daemon onto your Nagios Server and then use the NSClient to execute a basic Powershell script and report the output back into the Nagios interface. In Part 4. I covered how you can build some custom Power. Shell scripts to monitor you Exchange environment. KBiHShZIU/WLloTuchxEI/AAAAAAAAUZU/63rIeWCvYaEEpDJk6_CukZVba6kYWKXxwCLcB/s1600/BadMUD_game.png' alt='How To Install Telnet In Fedora 16' title='How To Install Telnet In Fedora 16' />Making Sure that you DNS Configuration is correct. Before you begin to setup the tools which will enable mail notifications to be sent from Nagios, you should ensure that you destination mail domain can be resolved from your Ubuntu server. I have assumed that you will be sending notifications to a mailbox within your Exchange infrastructure which naturally is separate to the Nagios implementation. In my example, my destination domain is prepad. Nagios server can lookup the MX record for that domain you can use the dig command like so dig prepad. If everything is ok, you should receive an output to the command similar to that below Installing POSTFIXPostfix is a free MTA for Linux which is designed to be easier to setup and configure than the more traditional Send. Mail offering. Combined with Heirloom Mail. X see next section Nagios can be configured to use the two products to send e mail notifications to a designated set of contacts in the event of an alert being generated. From the perspective of using Postfix to send e mail from Nagios the setup is very simple e. I am not going to go into huge amounts of detail on how you can configure Postfix. In order to install Postfix open an SSH session to your Nagios Ubuntu Server using Pu. TTY and type in the following command sudo apt get install postfix. You will then be presented with a two step setup Wizard the first page will ask you what type of POSTFIX SMTP Server you would like to use ensure that you have selected the Internet Site option, when done navigate using TAB to the OK button see below. You will then be asked to supply a Domain Name which the source e mails will be sent from in my example I have used nagios. This manual explains how to boot the Red Hat Enterprise Linux 6. Red Hat Enterprise Linux 6. OK button see below. This will then complete the configuration of Postfix. Installing Heirloom Mail. XHeirloom Mail. X is a small binary program that is used by Nagios to send mail to the Postfix mail server it is very easy to install. From the SSH console, type in the following command sudo apt get install heirloom mailx. Configuring Exchange to accept messages from your Nagios Server. There are better ways to do this, however if you want to ensure that your Exchange Hub transport servers are accepting mail from your Nagios server, you should ensure that the Default Receive Connector on your HT is configured to accept anonymous connections you can do this by opening up the Exchange Management Console and navigating to Microsoft Exchange On Premises Server Configuration Hub Transport, then select your HT and then from the low pane Receive Connectors right click on the Default lt Your HT from the context menu that appears choose Properties see below. From the properties box that appears, click on the Permission Groups tab, and then tick the Anonymous Users tick box, and then click on the OK button see below. This article will help you the Simple steps to How to Install JAVA 7 JDK 7on CentOSRHEL and Fedora System, New upgrade available of Java 7 is JAVA 7u79. On Monday, we learned that Microsoft was killing off the iconic Microsoft Paint program after 32 years and replacing it with Paint 3D in its upcoming Windows 10 update. This article explain how to install telnet client program on RHEL 67, CentOS 67, Oracle Linux 67. Install and configure Telnet Server in Linux Telnet service is to provide a textoriented communications and this service is used on internetLAN using a virtual. In the real world, you should probably consider creating a dedicated Receive Connector for the Nagios instance. Configuring Nagios to Send Mail Notifications. Now that you have installed the required components to enabled Nagios to send mail notifications, you will need to download two configurations files from your Nagios Server using File. Zilla and edit them using Notepad if you need to understand how to do this, please review part 2 of my installing Nagios for Exchange series. These files are commands. Which are located in usrlocalnagiosetcobjects. Open the commands. Notepad and modify the following two lines notify host by email command definition. Nagios nn. Notification Type NOTIFICATIONTYPEn. Host HOSTNAMEn. State HOSTSTATEn. Address HOSTADDRESSn. Info HOSTOUTPUTnn. DateTime LONGDATETIMEn binmailx s NOTIFICATIONTYPE Host Alert HOSTNAME is HOSTSTATE CONTACTEMAIL. Nagios nn. Notification Type NOTIFICATIONTYPEnn. Service SERVICEDESCn. Host HOSTALIASn. Address HOSTADDRESSn. State SERVICESTATEnn. DateTime LONGDATETIMEnn. Additional Info nnSERVICEOUTPUTn binmailx s NOTIFICATIONTYPE Service Alert HOSTALIASSERVICEDESC is SERVICESTATE CONTACTEMAIL. To look like the following notify host by email command definition. Nagios nn. Notification Type NOTIFICATIONTYPEn. Host HOSTNAMEn. State HOSTSTATEn. Address HOSTADDRESSn. Info HOSTOUTPUTnn. DateTime LONGDATETIMEn usrbinmailx s NOTIFICATIONTYPE Host Alert HOSTNAME is HOSTSTATE CONTACTEMAIL. Nagios nn. Notification Type NOTIFICATIONTYPEnn. Service SERVICEDESCn. Host HOSTALIASn. Address HOSTADDRESSn. State SERVICESTATEnn. DateTime LONGDATETIMEnn. Additional Info nnSERVICEOUTPUTn usrbinmailx s NOTIFICATIONTYPE Service Alert HOSTALIASSERVICEDESC is SERVICESTATE CONTACTEMAIL. In essence you are changing the binmail part of each command to usrbinmailx. When you are done, save the file and then using File. Zilla upload it back to your Nagios Server. Next open the contacts. Short name of user. Inherit default values from generic contact template defined above. Nagios Admin Full name of user. CHANGE THIS TO YOUR EMAIL ADDRESS. When you are done, save the file, and upload it back to your Nagios server. To finish up the configuration, from a Pu. TTY session type in the following command sudo etcinit. For the configuration changes to take effect. When there is now a problem with either a service or a host, the chosen recipient should receive a mail notification like the following Tagged as. Monitoring. Monitoring Exchange. Nagios Core. Notifications. How to Install Zabbix Agent and Add Windows Host to Zabbix Monitoring. Following previous tutorials concerning Zabbix series, this article describes how to install and setup an instance of Zabbix agent to run as a service on Microsoft Windows systems in order to monitor your infrastructure windows environments, especially server machines. Install Agent and Add Windows Host to Zabbix Monitoring. Requirements. Installing and Configuring Zabbix on Debian 8 and RHELCent. OS 7 Part 1. Related Guides. How to Configure Zabbix Monitoring to Send Email Alerts to Gmail Account Part 2. How to Install and Configure Zabbix Agents on Remote Linux Systems Part 3. Step 1 Download and Install Zabbix Agent on Windows. The pre compiled zip agents for Windows environments can be obtained from official Zabbix download page and manually installed and started on the system using windows Command Prompt as in the following example C Userscaezsar lt full system path to zabbixagentd. Example, suppose youve downloaded and extracted the Zabbix agent zip archive to D Downloadszabbixagents2. C Userscaezsar D Downloadszabbixagents2. D Downloadszabbixagents2. After the service has been installed on your windows host, open zabbixagentd. ServerIP of Zabbix Server. Server. ActiveIP of Zabbix Server. Hostnameuse the FQDN of your windows host. To start the service just type C Userscaezsar D Downloadszabbixagents2. To stop the service run the same command as above with stop argument and to uninstall the service use the uninstall argument. C Userscaezsar D Downloadszabbixagents2. C Userscaezsar D Downloadszabbixagents2. Wings Xp 5 Emulator. Configure Zabbix Windows Agent. A second and more convenient method to install and automatically configure Zabbix agent on Windows environments is by downloading Zabbix Agent installer msi package specific for your system architecture by visiting the link http www. Once the Zabbix agent msi file has been downloaded on your system, run it and supply the required information in order to configure and install the agent on the target monitored host as it follows Hostname use the FQDN of your windows host the hostname value should match the Full Computer name configured for your machine. Zabbix server Name use the IP of the Zabbix Server. Agent Port 1. 00. Remote Command check this value. Active Server IP of Zabbix Server. Zabbix Agent Installation on Windows. If you need to modify Zabbix configuration file with other custom values at a later date, the conf file can be found on programfilesZabbix Agent path. After youve finished the setup, open a windows Command Prompt with Administrator privileges, run services. Windows Services utility and locate Zabbix Agent service to check if the service is running and automatically started after reboot. From this console you can manage the service start, stop, pause, resume, enable or disable. Zabbix Agent Windows Service. Step 2 Configure Windows Firewall and Test Zabbix Agent. Almost all Windows based systems have Windows Firewall active and running, therefore zabbix agent port must be opened in firewall in order to communicate with zabbix server. In order to open Zabbix agent port in windows firewall, open Control Panel System and Security Windows Firewall and hit on Allow an app through Windows Firewall. Open Zabbix Port on Windows. Next, click on Allow another app button and a new window should open. Use the Browse button to navigate and add Zabbix agent executable file usually found in programfilesZabbix Agent if you installed it using msi program, then hit on Add button to add the service. Add Zabbix Agent. Add Zabbix to Windows. Next, make sure you check and open the firewall rule on the network segment where zabbix server is located in your network and hit OK button to finish and apply configuration. Allow Zabbix Agent on Windows Firewall. In order to test if Zabbix agent running on windows is reachable from Zabbix server side, use telnet or netcat command on zabbix server against windows agent IP Port and a Connected message should appear. Hit Enter key to generate an error message and automatically disconnect from agent telnet lt Windowsagent IP Address 1. Check Zabbix Agent Port on Windows. Step 3 Add Zabbix Agent Monitored Windows Host to Zabbix Server. Once the windows agent has been tested from command line and everything looks fine, go to Zabbix Server web interface, move to Configuration tab Hosts and hit on Create Host button in order to add the Windows monitored host. Add Windows Host to Zabbix. On Host window add the FQDN of your windows agent machine in Host name filed, add an arbitrary name to Visible name filed in order to easily identify the monitored machine on Zabbix panel, make sure the host is included into a Group Servers and add the IP Address of your windows host in Agent interfaces filed. The Port value leave it unchanged. Windows Host Configuration in Zabbix. Next, go to Template tab and hit on Select button. A new window with Zabbix Templates should appear. Navigate through this window, check Template OS Windows and hit on Select button to add the template. Zabbix Template OS Windows. Select Template OS Windows. Once the Template OS Windows appears on Link new templates filed, hit on Add button in order to link this template to the windows host configuration. Finally, after the Template OS Windows is visible in Linked Templates filed hit on below Add button to complete the process and add the entire Windows host configuration. Zabbix Linked Windows Templates. Add Linked Zabbix Windows Templates. After your monitored windows machine has been added return to Configuration Hosts and the windows Host should now be present in this window as illustrated on below screenshot. Check Windows Host in Zabbix. Thats all Just assure that your windows host Status is set to Enabled and wait a few minutes in order for Zabbix server to contact the windows agent side and process the received remote data. As an example, to get a graphical inside of the CPU load on the monitored Windows machine go to Zabbix web console Monitoring tab Graphs, select the windows machine host name and CPU load Graph and all the collected data so far should be presented into a nice graphical chart. Monitor Windows Host in Zabbix.