Here is the situation :).
For instance, we have 2 ran instances using PM2. They have appropriate ids, #0, #1.
And we have added other instances(#2, #3, #4), which were removed after some time.
So, when we run a new instance, we will receive the id as #5. But we have only two ran instances, so it will be logical to have a new id that will increment a last ran instance's id.
The meaning of the question is how we can reset or clean the unused ids from the PM2, without killing the current PM2 process.
I know about the command
pm2 kill
But in this case, we are killing the current pm2 process, which means that we will kill all our ran instances.
Thanks!