How to tell which version of the Collector is installed?

 The current version of Collector can be found within the Collector Management pages of an account or through the logs generated by the Collector on your host. 

Sumo Logic Web Application

To check the version of the Collector: 

1. Log in, then go to Manage > Collectors to open the Collectors page.
2. Find the Collector, and hover the mouse over the Collector's name. 
3. The software version number is displayed within the displayed tooltip. 
   
   
   

The Collector logs

To check the version of the Collector: 

1. Go to the collector's [install_directory]/logs directory. (For example, /opt/SumoCollector/logs, /usr/local/SumoCollector or C:\Program Files (x86)\Sumo Logic Collector>.)
2. View the collector.out.log file.
3. You will find a Sumo Logic banner that contains the version number, as shown.