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vGPU

 

 

dnsblog

最後更新: 2019-08-13

介紹

The  dnsblog(8)  server implements an ad-hoc DNS white/blacklist lookup service.

This may eventually be replaced by an UDP client that is built directly into the postscreen(8) server.

This service does DNSBL lookups for postscreen(8) and logs results.
 

netdata

最後更新: 2019-08-13

介紹

real-time performance and health monitoring solution

Designed to:

  • Solve the centralization problem of monitoring (Scales to infinity)
  • Replace the console for performance troubleshooting

HomePage: http://my-netdata.io

特點

  • 1s granularity
  • Zero disk I/O (預設所有資料放在 RAM)

Port:

19999/tcp

運作:

           Query
             |
Collect -> Store -> Stream -> Archive
             |
           Check

positive / negative values

positive values

read, input, inbound, received

negative values

write, output, outbound, sent

monitoring agent

  • metrics collector
  • time-series database
  • metrics visualizer
  • alarms notification engine

Security Design

  • Netdata daemon runs as a normal system user
  • plugins perform a hard coded data collection job
  • plugins & Netdata slaves unidirectional: from the plugin towards the Netdata daemon
  • dashboards are read-only
  • data do not leave the server where they are collected
  • Netdata servers do not talk to each other
  • your browser connects all the Netdata servers

 

perfmon

 

 

 

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