Network supervision¶
Network and server monitoring¶
Graph monitoring with cacti¶
Cacti is a tool to collect values from machines and network equipments and to represent them in graphs.- Cacti graphs
- Cacti Admin (login: adminrsm)
Values are collected using SNMPv2. Most of the equipments in the B25 lab use the read-only community ''b25'' or ''cacti'' (example L.54)
TODO: Make all SNMP configurations consistent
The cacti tool is hosted on the Hermes server. Graphs are exported every 15min to be publicly accessible (See Cacti config).
IP monitoring (net-scan)¶
A nmap instance regularly scans the public IPv4 range used in the lab to detect new pingable public IPv4 and/or new open TCP port.
The script is run on a daily basis on the Hermes server. Results are commited on the SVN noc-rsm project and available here: source:/net-scan/ipv4+ports.scan
Rule of thumb: Every pingable IPv4 address must be registered in the reverse DNS file
TODO: Integrate ndpmon tool for IPv6 discovery and perform nmap scan on discovered IP.
Failure notification¶
Nagios is a tool which monitor service reachability. Notifications can be sent by mail when detecting a problem. Centreon is a web portal to configure Naagios.
These tools have been deployed as part of the FAN (Fully Automated Nagios) Linux distribution. This distribution is currently used as a virtual machine running on the MacMini Server.
- Centreon/Nagios (login adminrsm)