HashiCorp Packer automates the creation of machine images, coming out of the box with support to build images for Amazon EC2, CloudStack, DigitalOcean, Docker, Google Compute Engine, Microsoft Azure, QEMU, VirtualBox, and VMware.
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Salt
Score 6.2 out of 10
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Built on Python, Salt is an event-driven automation tool and framework to deploy, configure, and manage complex IT systems. Salt is used to automate common infrastructure administration tasks and ensure that all the components of infrastructure are operating in a consistent desired state.
We use packer to generate new machine images for multiple platforms on every change to our Configuration Management tools like Chef/Puppet/Ansible It's act single tool for Image building for Multi-provider like AWS/Azure/GCP Helps to achieve Dev/Prod Parity Packer itself doesn't have a state like Terraform. You can't do packer output AMI ID. If you have a scenario where you want to maintain the state for images it would be tough to manage via Packer.
SaltStack is a very well architected toolset and framework for reliably managing distributed systems' complexity at varied scale. If the diversity of kind or number of assets is low, or the dependencies are bounded and simple, it might be overkill. Realization that you need SaltStack might come in the form of other tools, scripts, or jobs whose code has become difficult, unreliable, or unmaintainable. Rather than a native from-scratch SaltStack design, be aware that SaltStack can be added on to tools like Docker or Chef and optionally factor those tools out or other tools into the mix.
Targeting is easy and yet extremely granular - I can target machines by name, role, operating system, init system, distro, regex, or any combination of the above.
Abstraction of OS, package manager and package details is far advanced beyond any other CRM I have seen. The ability to set one configuration for a package across multiple distros, and have it apply correctly no matter the distrospecific naming convention or package installation procedure, is amazing.
Abstraction of environments is similarly valuable - I can set a firewall rule to allow ssh from "management", and have that be defined as a specific IP range per dev, test, and prod.
We haven't had to spend a lot of time talking to support, and we've only had one issue, which, when dealing with other vendors is actually not that bad of an experience.
There are lot of tools in market which does the job for Image creation but all of them are not complete Machine/Image as a code. All other alternatives can create Image partially. Main reason for selecting Packer are Packer is lightweight, portable, and command-line driven Packer helps keep development, staging, and production as similar as possible. Packer automates the creation of any type of machine image Multi-provider portability is the feature to die for
We moved to SaltStack from Puppet about 3 years ago. Puppet just has too much of a learning curve and we inherited it from an old IT regime. We wanted something we could start fresh with. Our team has never looked back. SaltStack is so much easier for us to use and maintain.
We manage two complex highly available self-healing (all infrastructure and systems) environments using SaltStack. Only one person is needed to run SaltStack. That is a HUGE return on investment.
Building tooling on top of SaltStack has allowed us to share administrative abilities by role - e.g. employee X can deploy software Y. No need to call a sysadmin and etc.
Recovery from problems, or time to stand-up new systems is now counted in minutes (usually under eight) rather than hours. This is a strategic advantage for rolling out new services.