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Cleverlance monitoring system

2009–2022

I built and maintained a Linux monitoring server for the Cleverlance infrastructure for over ten years.

I gradually extended the central monitoring server, upgraded it, and migrated it to new hardware twice.

• Nagios-based monitoring with NagVis maps, service dependencies and SMS notifications via a GSM modem,
• graphs in Cacti, later in collectd, Graphite and Grafana, and NetFlow collection,
• automated network device configuration backups (RANCID),
• custom plugins and tools in Python: monitoring of Cisco UCS, UPS units and server rooms, multicast propagation checks, VPN load tracking,
• centralised syslog with forwarding to Splunk.