79eab54fd9
When using the ifName or ifDescr as means to map discovered ports to known ports in the DB (think of port association mode) it's possible that we're facing the problem that the ifName or ifDescr polled from the device is unset or an empty string (like when querying some ubnt devices...). If this happends we have no way to map this port to any port found in the database. As reported this situation may occur for the time of one poll and might resolve automagically before the next poller run happens. Without this special case this would lead to new ports added to the database each time this situation occurs. To give the user the choice between »a lot of new ports« and »some poll runs are missed but ports stay stable« the 'ignore_unmapable_port' option has been added to configure this behaviour. To skip the port in this loop is sufficient as the next loop is looping only over ports found in the database and "maps back". As we did not add a new port to the DB here, there's no port to be mapped to. I'm using the in_array() check here, as I'm not sure if an "ifIndex" can be legally set to 0, which would yield True when checking if the value is empty(). Signed-off-by: Maximilian Wilhelm <max@rfc2324.org>
Introduction
LibreNMS is an autodiscovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems including Cisco, Linux, FreeBSD, Juniper, Brocade, Foundry, HP and many more. LibreNMS is a community-based fork of Observium.
We intend LibreNMS to be a viable project and community that:
- encourages contribution,
- focuses on the needs of its users, and
- offers a welcoming, friendly environment for everyone.
The Debian Social Contract will be the basis of our priority system, and mutual respect is the basis of our behaviour towards others. For more about the culture we're trying to build, please read the Freenode philosophy, including guidelines for running an IRC channel and being a community catalyst.
Documentation
Documentation can be found in the doc directory or docs.librenms.org, including instructions for installing and contributing.
Participating
You can participate in the project by:
- Talking to us on IRC (##librenms on Freenode) or Twitter.
- Joining the librenms-project mailing list.
- Improving the documentation.
- Cloning the repo and filing bug reports and pull requests on github. See CONTRIBUTING for more details.
VM image
You can try LibreNMS by downloading a VM image. Currently, a Ubuntu-based image is supplied and has been tested with VirtualBox.
Download the VirtualBox / VMWare image and open it then log in with credentials provided. Enter the following command:
./daily.sh
You'll then need to find out the IP of your VM (ifconfig | grep add) and
create a DNS entry for librenms.example.com to point to that IP. You can
also edit your /etc/hosts file with the following line:
$ip librenms.example.com
where $ip is the IP of your VM.
Add a new user by entering:
./adduser.php <username> <password> 10 <email>
replace , and with a username, password and your email address.
From there, just point your web browser
to http://librenms.example.com/ and login with your new username and password.
License
Copyright (C) 2006-2012 Adam Armstrong adama@memetic.org
Copyright (C) 2013-2016 by individual LibreNMS contributors
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
LICENSE.txt contains a copy of the full GPLv3 licensing conditions.
The following additional license conditions apply to LibreNMS (a GPL exception):
As a special exception, you have permission to link or otherwise combine LibreNMS with the included copies of the following third-party software, and distribute modified versions, as long as you follow the requirements of the GNU GPL v3 in regard to all of the remaining software (comprising LibreNMS).
Please see Acknowledgements