Installation via st2_deploy.sh fails under CentOS 7

[arm4b]

Tried to install StackStorm under fresh CentOS7 (x86_64) AWS AMI. As you can see, erlang dependency for rabbitmq is missing:

# sudo ./st2_deploy.sh latest
# Detected Distro is CentOS Linux
Downloading deployment script from: https://downloads.stackstorm.net/releases/st2/0.12dev/rpms/st2_deploy.sh...
Running deployment script for St2 0.12dev...
######################################################################
######                       WARNING                           #######
######################################################################

This scripts allows you to evaluate StackStorm on a single server and
is not intended to be used for production deployments.

For more information, see http://docs.stackstorm.com/install/index.html

To abort press CTRL-C otherwise installation will continue in 5 seconds
Installing version 0.12dev
###########################################################################################
# Detected linux distribution is RedHat compatible
Failed to issue method call: Unit firewalld.service not loaded.
###########################################################################################
# Downloading rpms packages
ST2 Packages: st2common st2reactor st2actions st2api st2auth st2debug
/home/stanley/rpms ~
~
###########################################################################################
# Installing packages via yum
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.cogentco.com
 * extras: mirror.symnds.com
 * updates: mirrors.lga7.us.voxel.net
No packages marked for update
Loaded plugins: fastestmirror
Examining /tmp/rabbitmq-server.rpm: rabbitmq-server-3.3.5-1.noarch
Marking /tmp/rabbitmq-server.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package rabbitmq-server.noarch 0:3.3.5-1 will be installed
--> Processing Dependency: erlang >= R13B-03 for package: rabbitmq-server-3.3.5-1.noarch
Loading mirror speeds from cached hostfile
 * base: mirror.cogentco.com
 * extras: mirror.symnds.com
 * updates: mirrors.lga7.us.voxel.net
--> Finished Dependency Resolution
Error: Package: rabbitmq-server-3.3.5-1.noarch (/rabbitmq-server)
           Requires: erlang >= R13B-03
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

Adding EPEL repo worked for me:

sudo yum install epel-release

---

There are other options available to install erlang: https://www.rabbitmq.com/install-rpm.html
Seems script should check if there is erlang package available, and if not - install it also somewhere here.

[arm4b]

Also some related/useful info about RHEL6/7:

• From yesterday's IRC:

  jfryman: cool! we're also working on making the experience better for CentOS 6.x users too in the very near future.

• Docker drops support for RHEL6/CentOS6, only 7 from now

Not to forget about RHEL7/CentOS7.