In order to assess performance monitoring accuracy on virtualization platforms, the CPU steal time has become an increasingly relevant metric - see EC2 monitoring: the case of stolen CPU for an ...
I have Graphite setup on three instances on EC2: carbon-relay - relay1.graphite.prod.example.ec2 carbon-cache + webapp - cache3.graphite.prod.example.ec2 carbon-cache + webapp - ...
I saw a lot of monitoring tools and mostly show the same things. But I'm wondering if it's really necessary to watch all of these things. I would like to know which metrics really matter for example ...
As far as I can tell, here are the main differences: OpenTSDB does not deteriorate data over time, unlike graphite where the size of the database is pre-determined. OpenTSDB can store metrics per ...
We're using Cacti with RRDTool to monitor and graph about 100,000 counters spread across about 1,000 Linux-based nodes. However, our current setup generally only gives us 5-minute graphs (with some ...
I have used munin on multiple servers for many years with great success, however with more than 100 munin-nodes and when there is load on the clients, the processing is timing out. I have made some ...
Someone have experience with lamp monitoring ? I mean standard monitoring and slow queries monitoring for mysql, virtual hosts load as well. And alerting if something going not well. Cacti is very ...