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Phil (aka MP3Monster)'s Blog

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Phil (aka MP3Monster)'s Blog

Tag Archives: Terraform

OKit – OCI Design (on Windows)

08 Tuesday Dec 2020

Posted by mp3monster in Cloud, General, Oracle, Technology

≈ 1 Comment

Tags

Ansible, Docker, Linux, OCI, OKit, Oracle, python, Terraform, Windows

OKit is a tremendous tool for the visual design and development for your Oracle Cloud environment. Visualizing your networks, positioning of service gateways and so on makes it a lot easier than filling in web forms or writing Terraform files as you can see the relationships between the different parts far more easily. For the same reason really that a lot of people use Visio and other tools for this work. The real beauty is that OKit can generate the Terraform and Ansible scripting that can then be used to deliver the implementation.

Okit for visual design of Oracle Cloud

The tool isn’t currently an official Oracle product, but something built by the Oracle A-Team (a small team of gurus who have a role blending developer advocacy, architect supporting customers for the special edge cases and providing thought leadership). But we can hope that someone brings it into the fold and perhaps even incorporates it securely into the cloud dashboard. In the mean time, the code in its entirety is available on GitHub.

Continue reading →

Oracle API CS vs OCI API approach to securing gateway configuration

02 Tuesday Jun 2020

Posted by mp3monster in API Platform CS, APIs & microservices, General, Technology

≈ Leave a comment

Tags

API, CLoud Native, IaaS, Linux Foundation, OCI, Oracle, Owasp, PaaS, SaaS, Security, Terraform

A couple of years ago I got to discuss some of the design ideas behind API Platform Cloud Service. One of the points we discussed was how API Platform CS kept the configuration of APIs entirely within the platform, which meant some version management tasks couldn’t be applied like any other code. Whilst we’ve solved that problem (and you can see the various tools for this here API Platform CS tools). The argument made that your API policies are pretty important, if they get into the public domain then people can better understand to go about attacking your APIs and possibly infer more.

Move on a couple of years, Oracle’s 2nd generation cloud is established an maturing rapidly (OCI) and the organisational changes within Oracle mean PaaS was aligned to SaaS (Oracle Integration Cloud, Visual Builder CS as examples) or more cloud native IaaS. The gateway which had a strong foot in both camps eventually became aligned to IaaS (note that this doesn’t mean that the latest evolution of the API platform (Oracle Infrastructure API) will lose its cloud agnostic capabilities, as this is one of unique values of the solution, but over time the underpinnings can be expected to evolve).

Any service that has elements of infrastructure associated with it has been mandated to use Terraform as the foundation for definition and configuration. The Terraform mandate is good, we have some consistency across products with something that is becoming a defacto standard. However, by adopting the Terraform approach does mean all of our API configurations are held outside the product, raising the security risk of policy configuration is not hidden away, but conversely configuration management is a lot easier.

This has had me wondering for a long time, with the use of Terraform how do we mitigate the risks that API CS’s approach was trying to secure? But ultimately the fundamental question of security vs standardisation.

Mitigation’s

Any security expert will tell you the best security is layered, so if one layer is found to be vulnerable, then as long as the next layer is different then you’re not immediately compromised.

What this tells us is, we should look for ways to mitigate or create additional layers of security to protect the security of the API configuration. These principles probably need to extend to all Terraform files, after all it not only identifies security of not just OCI API, but also WAF, networks that are public and how they connect to private subnets (this isn’t an issue unique to Oracle, its equally true for AWS and Azure). Some mitigation actions worth considering:

  • Consider using a repository that can’t be accidentally exposed to the net – configuration errors is the OWASP Top 10. So let’s avoid the mistake if possible. If this isn’t an option, then consider how to mitigate, for example …
    • Strong restrictions on who can set or change visibility/access to the repo
    • Configure a simple regular check that looks to see if your repos have been accidentally made publicly visible. The more frequent the the check the smaller the potential exposure window
  • Make sure the Terraform configurations doesn’t contain any hard coded credentials, there are tools that can help spot this kind of error, so use them. Tools exist to allow for the scanning of such errors.
  • Think about access control to the repository. It is well known that a lot of security breaches start within an organisation.
  • Terraform supports the ability to segment up and inject configuration elements, using this will allow you to reuse configuration pieces, but could also be used to minimize the impact of a breach.
  • Of course he odds are you’re going to integrate the Terraform into a CI/CD pipeline at some stage, so make sure credentials into the Terraform repo are also secure, otherwise you’ve undone your previous security steps.
  • Minimize breach windows through credentials tokens and certificate hanging. If you use Let’s Encrypt (automated certificate issuing solution supported by the Linux Foundation). Then 90 day certificates isn’t new.

Paranoid?

This may sound a touch paranoid, but as the joke goes….

Just because I’m paranoid, it doesn’t mean they’re not out to get me

Fundamental Security vs Standardisation?

As it goes the standardisation is actually a dimension of security. (This article illustrates the point and you can find many more). The premise is, what can be ensured as the most secure environment, one that is consistent using standards (defacto or formal) or one that is non standard and hard to understand?

Oracle Cloud Shell Tool

15 Sunday Mar 2020

Posted by mp3monster in General, Oracle, Technology

≈ Leave a comment

Tags

CLI, Cloud, Git, OCI, Oracle, shell, Terraform

A few weeks ago Oracle announced a new tool for all Oracle cloud users including the Always Free tier. Cloud Shell provides a Linux (Oracle v7.7) environment to freely use ( (within your tenancy’s monthly limits) – no paying for VM or using your limited set of VMs (for free-tier users) or anything like that.

As you can see the Shell can be started using a new icon at the top right (highlighted).  When you open the shell for the 1st time, it takes a few moments to instantiate – and you’ll see the message at the top of the console window (also highlighted). The window provides a number of controls which allows you to expand to full screen and back again etc.

The shell comes preconfigured with a number of tools, such as Terraform with the Oracle extensions, OCI CLI, Java and Git, so linking to Developer Cloud or GitHub for example to manage your scripts etc is easy (as long as you know you GIT CLI – cheat sheet here).  The info for these can be seen in the following screenshots.

In addition to the capabilities illustrated, the Shell is set up with:

  • Python (2 and 3)
  • SQL Plus
  • kubectl
  • helm
  • maven
  • Gradle

The benefit of all of this is that you can work from pretty much any device you like. It removes the need to manage and refresh security tokens locally to run scripts.

A few things to keep in mind whilst trying to use the Shell:

  • It is access controlled through IAM, so you can of course grant or block the use of the tool. Even with access to the shell, users will need to obviously have to have access to the other services to use the shell effectively.
  • The capacity of the home folder is limited to 5GB – more than enough for executing scripts and a few CLI based tools and plugins – but that will be all.
  • If the shell goes unused for 6 months then the tenancy admin will be warned, but if not used, then the storage will be released.  You can, of course, re-activate the Shell features at a future date, but of course, it will be a blank canvas again.
  • For reasons of security access to the shell using SSH is blocked.

The shell makes for a great environment to manage and perform infrastructure development from and will be a dream for Linux hard code users.  For those who like to be lazy with a visual IDE, there are ways around it (e.g. edit in GitHub) and sync. But power users will be more than happy with vim or vi.

Oracle’s own documentation can be fiound at https://docs.cloud.oracle.com/en-us/iaas/Content/API/Concepts/cloudshellintro.htm

London Oracle Developer Meet-up – November 18

19 Monday Nov 2018

Posted by mp3monster in development, General

≈ 1 Comment

Tags

IaaS, infrastructure, Microservices, monolith, OCI, Oracle, Terraform

Another Oracle Developer Meet-up took place in London yesterday. This meet-up focused on Terraform and Microservices. The summary of the evening slides:

Oracle London Developer Meetup November 2018 from Phil Wilkins

Chris Hollies’ slides can be found at here.  As demo’s aren’t included in the deck, the following videos are alternatives:

Our second session, that I presented on how we can establish paths of transition that make it easy to adopt microservices. The presentation material for this is available here:

Microservices in a Monolith World from Phil Wilkins

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