An handy warning is shown when a non-trunk port has multiple mac addresses seen, or when slow devices are attached to high-speed ports. Retrieved information include, but is not limited to, device description, contact, and uptime, along with its interfaces, connected MAC addresses and transferred bytes. The access to the details page triggers a series of SNMP queries aimed at retrieving the health and status of the device of interest. Upon successful addition, the device will appear in the list of devices.Ī details page is available for every SNMP device configured simply by clicking on the “Device IP” hyperlink. The addition of a new SNMP is straightforward as it only requires to specify device IP address and SNMP community. The rightmost column gives access to device-specific actions.Īn “Add New Device” link is available at the bottom of the “SNMP Devices” page. Indeed, a dedicated SNMP menu provides instantaneous access to all the configured devices, and allow the administrator to add/remove devices from the pool.Ĭonfigured devices are listed along with their address, description, location, and other information. Ntopng represent an effective way to have a clear, centralized view of multiple devices. With ntopng Enterprise it is possible to consistently and programmatically interact with those devices to have a real-time view of their status, as well as to build historical record for future investigations and trouble shootings. Simple Network Management Protocol (SNMP) is one of the de-facto standards used to remotely monitor network devices such as routers, switches and servers, just to name a few. ntopng systematically interacts with SNMP devices to provide historical and real-time insights on the network.Being able to remotely monitor network devices is fundamental to have a clear picture of present and past network health.SNMP is widely used for network monitoring.Open up the nagios command.cfg file (/usr/local/nagios/etc/objects/commands. The command is very simple since all the alert logic resides inside ntopng. The first thing to do is to add a nagios command. Now that alerts format has been discussed, it is possible to move to the actual nagios configuration. NSCA messages are tab-separated text lines that contain the following information: Host Service Description Service Status Message Before delving into the nagios configuration, it is worth discussing the format of ntopng-generated alerts.Īs already introduced, ntopng propagates alerts as NSCA messages. In order to properly handle ntopng-generated alerts, nagios requires some extra configuration. Once the debug is enabled, useful NSCA status information is sent to the syslog. Then, save the file and restart the NSCA daemon. # Values: 0 = debugging off, 1 = debugging on debug=1 # messages are logged to the syslog facility. # This option determines whether or not debugging Open the file /usr/local/nagios/etc/nsca.cfg, locate the line debug=0 and change it to 1: The only thing that is recommended is to enable the debug in the nsca.cfg file. NSCA daemon configuration is pretty straightforward. A Mac Os X host running ntopng (ip address 192.168.1.6).Daemon executables are installed under /usr/local/nagios/bin, whereas configuration files are stored in /usr/local/nagios/etc. An x86_64 ubuntu 14.04 host running nagios and nagios NSCA daemons (ip address 192.168.1.10).This tutorial uses two hosts connected to the same LAN: Please see the Resources section at the bottom of this page for useful links and guides on how to set-up nagios and NSCA daemons. nagios NSCA (Nagios Service Check Acceptor) daemon.It is assumed that the following software is already installed and properly configured: This tutorial shows how to properly configure nagios and ntopng (Professional) in order to send asynchronous ntopng-generated alerts to nagios. Full discontinuation notice available here. This post becomes obsolete effective with ntopng 4.1+.
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