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docker-machine

Docker Machine vs Virtual Machine

I've been reading recently about docker machine , and while I get roughly what's the general idea , I'm still not very clear about some points, specifically :

  1. when you create a regular VM from Vmware, you define : RAM,CPU,HDD,etc or in the case of cloud, the instance type/size.. however , with docker-machine seems you only specify driver and machine name ... how does docker machine know what instance type/size or hardware specs to use ?

  2. How is connecting using docker-machine different from doing SSH directly into my VMs ?

Solution

  • After reading more on the online documentation , I found that the different VM drivers include some commands for defining RAM , CPU , HDD (--virtualbox-cpu-count , --virtualbox-memory , and --virtualbox-disk-size ) , else it'll use some default values (i.e : 1 CPU)

    But more importantly the iso this product uses is Boot2Docker, which is "DEPRECATED" , also with more powerful orchestration tools out there ... I guess there's no room for Docker Machine (R.I.P)