Mohammad Fakrul Alam Bangladesh Network Operators Group April 2016, Dhaka, Bangladesh

Transcription

1 Mohammad Fakrul Alam Bangladesh Network Operators Group 7-11 April 2016, Dhaka, Bangladesh

2 What is Observium Autodiscovering SNMP based network monitoring tool Written in PHP (web application) Includes support for a wide range of network hardware and operating systems including: Cisco, Linux, FreeBSD, Juniper, Brocade, Foundry, HP and many more. See Supported_Devices Bangladesh Network Operators Group 2

3 Observium Features Observium supports monitoring of the following metrics: CPU, Memory and Storage statistics. Interface traffic, packet and detailed error statistics. BGP and OSPF statistics. MPLS VPN configuration. Temperature, Fan Speed, Voltage, Amperage, Power, Humidity and Frequency sensors. Detailed IPv4, IPv6, TCP and UDP stack statistics. Users, Processes, Load Average and Uptime statistics. Linux distribution detection. Cisco CEF statistics. Cisco IPSec VPN statistics. Real-time interface traffic graphing. Device inventory collection. Bangladesh Network Operators Group 3

4 Architecture SNMP + Agent Pooler Memcached Web GUI Billing Pooler RRD Graphs SNMP Discovery MySQL Bangladesh Network Operators Group 4

5 Dashboad Bangladesh Network Operators Group 5

6 Devices Bangladesh Network Operators Group 6

7 Device Details Bangladesh Network Operators Group 7

8 Port Details Bangladesh Network Operators Group 8

9 Interface Statistics Bangladesh Network Operators Group 9

10 Health Bangladesh Network Operators Group 10

11 BGP Sessions Bangladesh Network Operators Group 11

12 Inventory Bangladesh Network Operators Group 12

13 Configuration File Observium configuration file located in /opt/observium/config.php /opt/observium/includes/defaults.inc.php /opt/observium/poller.php /opt/observium/discovery.php Bangladesh Network Operators Group 13

14 Notification // Mailer backend Settings $config[' _backend'] = 'sendmail'; // Mail backend. Allowed: "mail" (PHP's built-in), "sendmail", "smtp". $config[' _from'] = 'Observium<observium@bdhub.com>'; // Mail from. Default: "OBSERVIUM Network Monitor" <observium@`hostname`> $config[' _sendmail_path'] = '/usr/sbin/sendmail'; // The location of the sendmail program. $config[' _smtp_host'] = 'localhost'; // Outgoing SMTP server name. $config[' _smtp_port'] = 25; // The port to connect. $config[' _smtp_timeout'] = 10; // SMTP connection timeout in seconds. $config[' _smtp_secure'] = NULL; // Enable encryption. Use 'tls' or 'ssl' $config[' _smtp_auth'] = FALSE; // Whether or not to use SMTP authentication. $config[' _smtp_username'] = NULL; // SMTP username. $config[' _smtp_password'] = NULL; // Password for SMTP authentication. Bangladesh Network Operators Group 14

15 Notification // Alerting Settings $config['alerts'][' ']['default'] = 'fakrul@bdhub.com'; // Default alert recipient $config['alerts'][' ']['default_only'] = FALSE; // Only use default recipient $config['alerts'][' ']['enable'] = TRUE; // Enable alerts $config['alerts']['bgp']['whitelist'] = NULL; // Populate as an array() with ASNs to alert on. $config['alerts']['port']['ifdown'] = TRUE; // Generate alerts for ports that go down $config['alerts']['port']['ifdown_types'] = array('core', 'transit', 'peering'); // Generate alerts for ports that go down $config['alerts']['interval'] = 86400; // How frequently to re-send a notification for a continuing alert condition // In seconds. Default is 1 day. Bangladesh Network Operators Group 15

16 Description Parser Observium will recognize the usage of ports as customer ports, transit, etc for display purposes using a standard interface description format: The text before the colon defines the type of service, recognized types are : Cust - Customer Transit - Transit link Peering - Peering link Core - Infrastructure link (non-customer) Server - Server link (non-customer) Additional information can be added using different bracket types: () contains a note {} contains *your* circuit id [] contains the service type or speed Bangladesh Network Operators Group 16

17 Description Parser Bangladesh Network Operators Group 17

18 Auto Discovery /opt/observium/includes/defaults.inc.php / Autodiscovery Settings $config['autodiscovery']['xdp'] Autodiscover hosts via discovery protocols = TRUE; // $config['autodiscovery']['ospf'] Autodiscover hosts via OSPF = TRUE; // $config['autodiscovery']['bgp'] Autodiscover hosts via BGP = TRUE; // $config['autodiscovery']['snmpscan'] = TRUE; // Autodiscover hosts via SNMP scanning - currently not implemented. (FIXME) $config['autodiscovery']['libvirt'] Autodiscover hosts found via libvirt = TRUE; // $config['autodiscovery']['ip_nets'] = array(" /8", " /16", " /8", " /12"); // Networks to permit autodiscovery Bangladesh Network Operators Group 18

19 Reference Bangladesh Network Operators Group 19

20 LAB 1. Install Observium 2. Pool Data from Router 3. Analysis functionality of Observium Bangladesh Network Operators Group 20