How to install and configure Nagios on Linux. Nagios is one of the most powerful network monitoring systems, which is widely used in the industry. It can actively monitor any network, and generate audioemail warnings and alerts when any problem is detected. The check types and alert timers are fully customizable. Another incredible capability of Nagios is that it can monitor both hosts and services e. Linux Information Portal YoLinux. Linux sites. Covers Linux topics from desktop to servers and from developers to. This article aims at building your personalprivate cloud storage using ownCloud 9 application. Nagios is one of the most powerful network monitoring systems, which is widely used in the industry. It can actively monitor any network, and generate audioemail. TemplateRefimprove This is a list of Internet socket port numbers used by protocols of the transport layer of the Internet Protocol Suite for the establishment of. IP addresses and TCPUDP port numbers. To explain a little, let us assume that there is a web server that we want to monitor. Nagios can check whether the server is online by running ping on the IPname of the server as well as it can be set up to provide warnings in case the round trip time RTT to the server increases. Further, Nagios can also check whether TCP port 8. ApacheIIS is not responding. There are also 3rd party monitoring tools that are based on Nagios, such as Centreon, FAN, op. Monitor, which supplement standalone Nagios engine in terms of interface, automation, and technical support. This tutorial explains how to install and configure Nagios on Linux. Install Nagios on Debian or Ubuntu. On a Debian based system, the installation in itself is a very simple process thanks to apt get. The mail server setting can be done during Nagios installation. It can also be configured later when needed. Note A valid SMTP configuration is needed for Nagios to be able send email notifications. As it can be seen, Nagios supports multiple options for email delivery. Zabbix_template_00_access.png/1024px-Zabbix_template_00_access.png' alt='Templates Zabbix Oracle' title='Templates Zabbix Oracle' />The most common options would be Internet Site where the server sends email directly to the recipient. Another widely used option is using smarthost or relay server, in which the server sends the email to an intermediary mail server which in turn is responsible for delivering the mail to the recipient. Next, the domain name of the server has to be included in the next step. Finally, the password for the Nagios admin user nagiosadmin is set. This value can also be changed later. Zabbix ist ein OpenSourceNetzwerkMonitoringsystem, welches hauptschlich von Alexei Vladishev entwickelt wurde. Inzwischen wird Zabbix von der Firma Zabbix SIA. Install Nagios on Cent. OS or RHELyum is used for installation. After setting up the repoforge repository, run yum as follows. Requirements for Monitoring. In this tutorial, we want to monitor the following. All Linux server will be checked every 3 minutes. All Cisco Routers will be checked every 3 minutes. All email alerts should go to the address sentinelexample. Nagios will verify 3 times before sending out any alerts just to be sure that the problem is real. If the RTT to any device exceeds 1. The rest of the tutorial will guide you to configure Nagios on Linux. Nagios Configuration on Ubuntu. It is important to know where Nagios configuration files are located. The following table shows the location of Nagios configuration files on Debian based systems. Customizable scripts used for monitoringetcnagios. Configuration files to add hosts, services, define checks and timersusrlibnagiosplugins. Executable files used for monitoring. The following steps are inter related. Hosts, groups for hosts and adding services to host groups are defined. Adding Host Template. The templates defining what to do with a type host is defined. We use the files provided with the installation as sample. Tiberian Sun Firestorm Patch. First, define a host template for Linux devices. Edit linux server. The parts with bold font are modified. Next, define a host template for Cisco devices. Modify cisco device. The bold font parts are modified. The highlighted parts are modified. Adding Host. Now that the host template is defined, the actual host to be monitored is added. Again, the files provided by default are used as sample. Name of host template to use. The hostname to be used by nagios. The IP address of the host. Name of host template to use. The hostname to be used by nagios. The IP address of the host. Host Group Definition. For ease of management when there are multiple hosts, it is advisable that hosts of similar types are grouped together. Linux Servers. membersour server comma separated list of members. Cisco Devices. membersour server comma separated list of members. Service Definition. First, the command example host check is defined with warning value of 1. Critical values are 5. One IPv. 4 ping request is transmitted. H HOSTADDRESS w 1. Then, the command is associated with host groups. Linux Servers. checkcommand example host check. Cisco Devices. checkcommand example host check. Contact Definition. The required address for sending email added to Nagios. Root. servicenotificationperiod 2. Finally, a dry run is initiated to check whether there are any configuration errors. If there are no errors, Nagios can be restarted safely. Nagios Configuration on Cent. OSRHELThe following shows the locations of Nagios configuration files on Redhat based systems. Configuration files to add hosts, services, define checks and timersusrlibnagiosplugins. Executable files used for monitoring. Adding Host Template. A template is created to define what needs to be done for a specific type of host. The files provided with the installation is modified. Adding Hosts and Host Groups. The configuration file provided with by default is used as a sample. The hosts and host groups are added in the same file. Adding Linux server. Adding Cisco Router. HOST GROUP DEFINITION. Linux Servers. members our server. Service Definition. A service called example host check is defined with warning values of 1. The critical values are 5. Only one IPv. 4 ping request will be transmitted. USER1checkping H HOSTADDRESS w 1. Contact Definition. The email address where alerts will be sent is added into Nagios. Nagios Admin. emailnagioslocalhost, sentinelexample. Finally, we are ready to start the Nagios service. A dry run is recommended to find out errors in configuration. Access Nagios after Configuration. Now you are ready to use Nagios. Nagios can be accessed by opening the URL http IPnagios. UbuntuDebian or http IPnagios in case of Cent. OSRHEL e. g. http 1. The user nagiosadmin needs to be authenticated to access the page. Troubleshooting Nagios. When Nagios is not running the way it is supposed to, the first thing to do would be to initiate a dry run. On Debian or Ubuntu. On Cent. OS or RHEL. The log file may also shed some important clue. The path to the log file is located at varlognagiosnagios. Zabbix Wikipedia. Zabbix is an enterprise open source monitoring software for networks and applications, created by Alexei Vladishev. It is designed to monitor and track the status of various network services, servers, and other network hardware. Zabbix uses My. SQL, Postgre. SQL, SQLite, Oracle or IBM DB2 to store data. Its backend is written in C and the web frontend is written in PHP. Zabbix offers several monitoring options Simple checks can verify the availability and responsiveness of standard services such as SMTP or HTTP without installing any software on the monitored host. A Zabbix agent can also be installed on UNIX and Windows hosts to monitor statistics such as CPU load, network utilization, disk space, etc. As an alternative to installing an agent on hosts, Zabbix includes support for monitoring via SNMP, TCP and ICMP checks, as well as over IPMI, JMX, SSH, Telnet and using custom parameters. Zabbix supports a variety of near real time notification mechanisms, including XMPP. Released under the terms of GNU General Public License version 2, Zabbix is free software. Dragon Quest 6 Game Genie Codes on this page. HistoryeditZabbix started as an internal software project in 1. After three years, in 2. GPL. 3 It took three more years until the first stable version, 1. Dashboard of the Zabbix 3. Timeline of major releases. Date. Release. Zabbix 1. Zabbix started as an internal project in a bank by Alexei Vladishev30. Apr 2. 00. 1Zabbix 1. GPL40. 00. 00. 00. Mar 2. 00. 4Zabbix 1. Zabbix 1. x. 00. 00. Feb 2. 00. 6Zabbix 1. May 2. 00. 7Zabbix 1. Sep 2. 00. 8Zabbix 1. Dec 2. 00. 9Zabbix 1. Zabbix 2. x. 00. 00. May 2. 01. 2Zabbix 2. Nov 2. 01. 3Zabbix 2. Sep 2. 01. 4Zabbix 2. Zabbix 3. x. 00. 00. Feb 2. 01. 6Zabbix 3. Sep 2. 01. 6Zabbix 3. Aug 2. 01. 7Zabbix 3. FeatureseditHigh performance, high capacity able to monitor hundreds of thousands of devices. Auto discovery of servers and network devices. Low level discovery. Distributed monitoring with centralized web administration. Support for both polling and trapping mechanisms. Native high performance agents client software for Linux, Solaris, HP UX, AIX, Free. BSD, Open. BSD, OS X, Tru. OSF1, Windows 2. 00. Windows Server 2. Windows XP, Windows Vista, Windows Server 2. Windows 7Agent less monitoring. JMX monitoring. Web monitoring. Secure user authentication. Flexible user permissions. Web based interface. SLA, and ITIL KPI metrics on reporting. Flexible e mail notification on predefined events. High level business view of monitored resources through user defined visual console screens and dashboards. Audit log. Developmentedit. Zabbix 2. 4 Dashboard page. Today, Zabbix is primarily developed by a dedicated company, also called Zabbix. Source codeeditZabbix consists of several separate modules Server. Agents. Frontend. Proxy. While the server, proxy and agents are written in C, the frontend is implemented in PHP and Javascript. Java gateway, available since Zabbix 2. Java. ReleaseseditSince the first stable version was released as 1. Zabbix versioning has only increased minor version numbers. Each minor release actually implements many new features, while change level releases mostly introduce bugfixes. Zabbix version numbering scheme has changed. While the first two stable branches were 1. As a result, 1. 3 followed 1. TimelineeditNote this chart excludes release candidates in stable branches. See alsoeditReferenceseditVidmar, Ane March 1. ZABBIX State of the art network monitoring. Linux. com. Ramm, Mark March 1. The Watcher Knows, Linux Magazine. Schroder, Carla May 2. Monitor Your Net with Free, High Performance ZABBIX, Enterprise Networking Planet. ZABBIX monitoring your applications, network and serversdebianhelp. Installation Instructions for Debian or Ubuntu MachinesFurther readingeditExternal linksedit.