498 | | We have been greeted with a large, red "proceed at your own risk" warning :). The corresponding interface on the pS-Performance Toolkit only queried the network utilization (bytes/sec) eventType on the SNMP MA. We are extending this interface to query all of the host monitoring metrics collected by Ganglia. This is still an early prototype, but should be functional (we are keen on receiving bug reports!). Let's pick a random metric, say amount of processes running on the CPU, and open its Flash Graph. Note that you can read a description for the eventType by rest the mouse on top of it. |
499 | | |
500 | | |
501 | | The perfAdmin visualization tool above allowed us to verify that our data is indeed being exported by the SNMP MA using the perfSONAR schema and API. However, the Ganglia Web visualization tool shows all the hosts monitoring metrics collected with a comprehensive and robust interface. Thus, for host monitoring in specific, we suggest this tool for visualizing the instrumentation on the slice. We can access the Ganglia Web through the URL https://<collector node>/ganglia/. |
| 498 | We have been greeted with a large, red "proceed at your own risk" warning :). The corresponding interface on the pS-Performance Toolkit only queried the network utilization (bytes/sec) eventType on the SNMP MA. We are extending this interface to query all of the host monitoring metrics collected by Ganglia. This is still an early prototype, but should be functional (we are keen on receiving bug reports!). Let's pick a node (''lamp'') and a random metric, say the percentage of CPU utilization while running at user level (http://ggf.org/ns/nmwg/characteristic/cpu/utilization/user/2.0), and open its Flash Graph. ''Note that you can read a description for the eventType by rest the mouse on top of it.'' |
| 499 | |
| 500 | [[Image(cpu-utilization.png)]] |
| 501 | |
| 502 | (Note that this graph shows how much load the LAMP Portal and Visualization tools can incur on the node. This is why we recommend using a dedicated node for these services; the LAMP Portal and the host monitoring collector.) |
| 503 | |
| 504 | Great! We're able to access the data collected by Ganglia through the SNMP MA using the perfSONAR schema and API. (Feel free to try other metrics!) However, the Ganglia Web visualization tool shows all the hosts monitoring metrics collected with a comprehensive and robust interface. Thus, for host monitoring in specific, we suggest this tool for visualizing the instrumentation on the slice. We can access the Ganglia Web through the URL https://<collector node>/ganglia/. |