Hosts, simple bash tool to run commands on several hosts

BigInsights  (IBM Hadoop) requires a number of prerequisites to have the cluster consistent. For instance: /etc/hosts file should be the same on all hosts. There are plenty of tools available, but finally, I decided to create a small tool on my own.
The tool is available here (branch hosts).
There are several simple bash procedures allowing copying and executing a single command on all hosts in the cluster. For instance: install a required package using yum command on all hosts.
Basically, two main tasks are implemented:

• Share file across hosts (for instance /etc/hosts)
• Run a single command on all hosts (for instance yum install package)

These two simple tools fulfill almost all tasks necessary to prepare and run the multi-host installation of BigInsights and IBM streams.

More details and description here.

Dockerize IBM Streams

It is very convenient to run IBM Streams in Docker container to avoid huge VM overhead. There is one project available, but my plan is not so ambitious.
The solution is described here, Dockerfile file is also available there. It is not full automation, it is rather several pieces of advice how to set up Docker container with running IBM Streams domain and instance inside, just lightweight Virtual Machine easy to set up and calm down.
But it comes with one serious limitation. Only single host standalone installation is possible. Multihost installation requires resolving IP-DNS mapping and I failed to overcome this problem.
But standalone installation is enough for developing, testing and evaluation. I will keep going to support multihost also.