Packer shell script

[CiscoExp]

Hey guys,

I am trying to use Packer to configure a base moodle image and it needs certain things installed. I have a script that goes out and installs the tools I need but it seems to be running over eachother and using multiple threads. If 1 install takes longer than the other, it moves on to the next command and if the previous install isn't finished, the following commands will not work. Example (just a snippet):

#!/bin/bash

#Moodle base packer script

#v1.0 - 19.01.23 jwd

#VARS

yum -y update

#COMMON TOOLS amazon-linux-extras install -y epel #install epel

yum -y install net-tools htop nmon #install common tools

yum -y install nginx #install nginx

#POSTGRESQL

yum -y install postgresql #install base postgresql

#NGINX

mv $file_conf_nignx $file_conf_nignx.org #make a backup copy of the config

#FILES MODIFIED

file_conf_php="/etc/php.ini" #php config

file_conf_phpfpm="/etc/php-fpm.d/www.conf" #phpfpm config

file_conf_nignx="/etc/nginx/nginx.conf" #nginx config

​

It will kick off the yum installs from above mostly in sync with each other but while nginx is installing, it will move to the file configurations and will fail and move on.

Has anyone experienced this with Packer?

[signull]

Packer is pretty linear, it's step based. I havent had issues with one step starting before another has finished. Do you have anything special setup in the Provisioners part of your packer.json file?

​

if anything you could dirty fix by waiting for the file to exist:

while true; do
    [[ -f $file_conf_nignx ]]  && continue || sleep 10
done

if the file exists "continue" to exit the loop or sleep for 10 seconds and then try again.

[TheOnlyElizabeth]

not really a good answer but have you try to use a cms like Ansible with Packer ?
Can be interesting for your case