2. Central App Monitoring Platform
• Graphite
– Carbon
– Whisper
– Webapp
• Simple time series data
• Highly scalable, optimized for I/O
• Queuing/Caching
• Capability to club non-persisted metrics with persisted
while returning data for monitoring (Real-time)
• Carbon-relay -> Clustering
• Works fine for lacs of metrics coming every second
• Can work with any client (statd daemon, jmxtrans, yammer
etc. or we can write our own easily) because of simple spec
3. Central App Monitoring Platform
• Metrics names recommended to be given in reverse dns format
– Easy to aggregate metrics for multiple servers of a system (eg.
com.snapdeal.cams.*)
• Supports both TCP & UDP
• Lots of mathematical functions to derive, aggregate, join multiple
metrics
• Grafana used for visualization (though graphite also provides UI)
• Grafana
– Cutting edge graphs and very easy configuration through GUI
– Easily integrates with Graphite APIs
– Integrated with elastic search for faster response on graphs
– Many more calculations (average, max, min etc.) possible on UI itself
4. Application Metrics – Yammer
• Simple Java library
• Different kind of Metrics
– Gauge
– Counter
– Meter
– Histogram
– Timer
– HealthCheck
• Supports both push (configurable frequency) or pull (jmx or http)
• Also sends JVM Info by default
• Very less overhead on application
– Just instantiate POJOs in between your existing code
– All processing in app’s control
– No need to write separate code
– Pushing via separate thread pool (no impact on app even if server is down)
• Yammer metrics can be exposed as MBeans (for JMX) as well.
5. Application Metrics – Jmxtrans
• What if you want to monitor your existing
Mbeans via central monitoring platform (like
graphite) or there are 3rd party frameworks
already exposing data using JMX
• Use Jmxtrans to integrate with Graphite server
• Frequency of pushing can be configured
• A separate centralized Jmxtrans App can suffice
for multiple applications (though running as
agent in same process also possible)
6. Alerting - Nagios
• Little crude, but flexible & powerful way to
alert.
• Client/Server Architecture
