Dimensions CM is Software Change and Configuration Management for Agile development, developed by Serena Software and now sold by OpenText.
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Progress Chef
Score 6.5 out of 10
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Chef IT infrastructure automation suites were developed by Chef Software in Seattle and acquired by Progress Software in September 2020. The Chef Enterprise Automation Stack is an integrated suite of automation technologies presented as a solution for delivering change quickly, repeatedly, and securely over every application's lifecycle. The Chef Effortless Infrastructure Suit is an integrated suite of automation technologies to codify infrastructure, security, and compliance, as well as…
Serena CM is well suited to highly controlled, audited, and process driven environments. It will allow strict segregation of duties, and change traceability. If implemented correctly it will help you quickly build trusts with your auditors. It is also well suited to environments that require constant branching and merging. Due to the complexity of the product and learning curve for your development and operations team it may be overkill in a small shop with loose rules
Chef is a very nice tool for establishing and maintaining a consistent configuration across a range of servers. In addition, Automate allows the continued monitoring and maintenance of servers so they don't drift from established standards. Overall, it deals very well with complex systems. Chef is slightly less applicable for a micro-services approach where the servers are replicated from a simple and known starting point.
Code Promotion: Dimensions CM allows supervisors to control changes to code, in that they delegate requests to developers, and act as a gatekeeper prior to promoting to the next environment. This functionality is configurable so you can set up a workflow that best fits the structure and requirements of your own company.
Code Repository for changes and versioning: Code can be checked out by item or by synchronizing folders. Code revisions can be compared against other revisions or work files. Item histories show which developers made which modifications, and which supervisor and operations personnel were involved in assigning the request and promoting the code to each environment. Additionally a pedigree will show a stream diagram which graphically displays branches and merges.
Deployment: Serena Change Management offers help automating deployment including integrations with SVN and Jenkins. Its newer versions also have a powerful graphical deployment automation tool (Serena Deployment Automation- SDA). It comes with a certain amount of licenses built-in. If you have a many nodes to deploy to there will be separate licensing costs for that.
Chef is very easy to learn. Written in ruby, Chef code is high enough level for non-ruby coders to get a general idea of what the script is doing.
Chef can be a one stop shop for writing code, testing infrastructure, and deployment of applications.
The Chef support team is very helpful in their auto manager support as well as active support in their Slack channels from development engineers & architects.
The only major negative that I have encountered with Serena CM product is that the very power and flexibility of the tool means there is a risk that you will make a mess of things. In other words it gives you plenty of rope to tangle yourself with. I recommend careful, well thought out deployments implementing the built in roles and workflows that can be turned on and configured, using a consistent methodology.
My experience with the Serena help desk support has not been impressive. Though reasonably polite and diligent, the technicians were well trained, and often gave bad advise and terrible scripts. On several occasions I had to rewrite scripts they have me; if I had run them as provided they would have caused even more difficulties than the problem I was trying to solve. I speak of the support in the past tense because I conditioned myself not to call them, it was usually just easier to solve nay problems my self. They do have a good account management team though, and for any major issues you can go thru them.
One main concern with Chef is the maintainability of Chef master.
The Chef-client should be installed on every node we want to do any automation.
It is mostly Ruby and there's a learning curve. Need to understand the fundamentals of Chef very throughly to play around with attributes, templates etc etc.
The Chef-client agent needs to be run on the nodes frequently to update the details of it state to master. And also to index the nodes based on tags.
The suite of tools is very powerful. The ability to create custom modules allows for unlimited potential for managing all aspects of a system. However, there is pretty significant learning curve with the toolset. It currently takes approx 3-4 months for new engineers to feel comfortable with our implementation
It loads quick enough for basically all our systems. Because we have this for local dev environments, speed isn't really a big issue here. Yes, depending on the system, sometimes it does take a relatively long time, but it's not an issue for me. One thing that is annoying is that if I want to make a small change to a cookbook and re-run the Chef client, I can't just make the change in the cache and run it. I have to do the whole process of updating the server.
Support for Chef is easily available for fee or through the open source community as most the issues you will face will have been addressed through the Chef developer community forums. The documentation for Chef is moderate to great and easily readable.
Serena CM is superior to Microsoft Team Foundation Server (TFS) in overall functionality, but does not have very good native integration with Microsoft. Therefore in a Microsoft centric shop with no audit needs ,TFS would be better. Otherwise I would choose Serena CM
Chef is the more developer-oriented of the three main tools in this space. It has a steeper learning curve as a result but it allows you to do more. Puppet seems to be more geared towards automated the management of the operating system. Ansible is an excellent tool but requires you to allow SSH connectivity into all of your instances.
Serena has facilitated our annual completion of various audit and technology control certifications. These certifications make a huge difference to our company's reputation and bottom line.
