Extracting Historical Activity Graphs

ZXTM has built in support for historical activity graphs for Virtual Servers, Pools and Nodes. You can view these graphs on the Activity -> Historical Activity page in the Admin interface. However sometimes it is nice to extract these graphs and archive them. The ZXTM Admin server doesn't provide a facility to this however fortunately it is reasonably simple to write a perl script to generate the graphs.

The script is supplied without support, but if you find it useful we would like to hear feedback so that we can work out if it (or an alternative API) should be fully supported in future versions of ZXTM.

• Download the script
• Copy it onto one of you ZXTM machines, renaming it to historicalactivity.pl and making it executable
• Running it with no arguments will produce the help output:
  

  Usage: ./historicalactivity.pl --output=image.png [OPTIONS]
  
  Generates a graph of historical activity for the ZXTM. If given no
  arguments, will default to graphing all virtual servers for 24 hours
  
  Required arguments:
  
    --output=FILE       File to output image to ('-' for stdout)
  
  Optional arguments:
  
    --time=HOURS        Number of hours to graph (default 24)
    --width=WIDTH       Width of output graph (default 640)
    --height=HEIGHT     Height of output graph (default 480)
    --allvs             Graph all Virtual Servers (default)
    --allpools          Graph all pools
    --allnodes          Graph all nodes
    --vs=VS1,VS2        Graph a subset of virtual servers
    --pool=POOL1,POOL2  Graph a subset of pools
    --node=NODE1,NODE2  Graph a subset of nodes
    --linear            Graph using a linear axis (default)
    --logarithmic       Graph using a logarithmic axis
    --hits              Graph hits per minute (default)
    --bytes             Graph bytes per second
    --help              Show this help message
  

• Running it with --allpools will produce a image like:
  
• The mapping between virtual server, pool or node and colour is output on stdout

Crispin Flowerday [Zeus Dev Team] 29 June 2006   5 comments