[one-users] Bugs in documentation - CentOS

[Jaco]

Hi folks,
(1st post)

I've toyed with ON before, but decided to finally commit.

I scratched my server, installed CentOS 7 (minimal) & followed guide 
provided here: 
http://docs.opennebula.org/4.8/design_and_installation/quick_starts/qs_centos7_kvm.html

(context: I've been using Ubuntu/Debian for a very long time, but 
recently decided to commit to CentOS/Fedora, so I'm a little rusty in 
places)

Overall it went OK, but not great.

A few things that tripped me up:
* CentOS 7 by default comes with firewalld - something that's not 
covered under official docco's. I initially thought it was iptables 
preventing access from LAN, but managed to find this issue via accessing 
services through SSH tunnel
* Telling people to 'disable SELinux' is simply a bad idea & sets a bad 
precedent & encourages lax security practices IMHO. It's there for a 
reason. For now I've set it to be permissive rather than disabled, but 
will re-enforce it again later.

Otherwise I've followed the guide dutifully, but I'm unable to provision 
my 1st instance.

I get this in the log:

Sun Oct 19 13:56:54 2014 [Z0][DiM][I]: New VM state is ACTIVE.
Sun Oct 19 13:56:54 2014 [Z0][LCM][I]: New VM state is PROLOG.
Sun Oct 19 13:56:56 2014 [Z0][LCM][I]: New VM state is BOOT
Sun Oct 19 13:56:56 2014 [Z0][VMM][I]: Generating deployment file: 
/var/lib/one/vms/5/deployment.0
Sun Oct 19 13:56:56 2014 [Z0][VMM][I]: Remote worker node files not found
Sun Oct 19 13:56:56 2014 [Z0][VMM][I]: Updating remotes
Sun Oct 19 13:56:57 2014 [Z0][VMM][I]: Command execution fail: 
/var/tmp/one/vnm/tin/pre $REDACTED_HASH
Sun Oct 19 13:56:57 2014 [Z0][VMM][I]: bash: line 2: 
/var/tmp/one/vnm/tin/pre: No such file or directory
Sun Oct 19 13:56:57 2014 [Z0][VMM][I]: ExitCode: 127
Sun Oct 19 13:56:57 2014 [Z0][VMM][I]: Failed to execute network driver 
operation: pre.
Sun Oct 19 13:56:57 2014 [Z0][VMM][E]: Error deploying virtual machine
Sun Oct 19 13:56:58 2014 [Z0][DiM][I]: New VM state is FAILED

/var/tmp/one/vnm/tin/pre/ did not exist, so I created it as user oneadmin

Virtual network is named "default", template " CentOS-7" & image " 
CentOS-7-one-4.8" (ad per docco).

Default setup out of the box does not work, and/or documentation is 
incomplete.

What am I missing?
Please advise

- J
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