A properly running Heat installation will have at least two processes: the Heat API process (heat-api) and the Heat engine (heat-engine). In addition, you can also optionally run the Heat Cloud Formation compatibility API (heat-api-cfn). This API makes heat compatible with the API provided by the AWS Cloud Formation product. You can confirm that these processes are running by executing the following command:
ps –aux | grep heat
This command should return an output similar to the following output:
You can also leverage the pgrep command to check the Heat processes:
pgrep –l heat
The output from this command will be similar to the following output:
One way to confirm that the heat-api process is running as expected is to use the Heat command-line tool. For example, you can execute the stack-list command to check this:
heat stack-list
When the heat-api process runs as expected, this command returns a list of your current stacks or an empty list if you haven't created...