Conda Conda: Environment configuration With a high probability, you own a powerful computing device that could be used as a standalone system for developing, debugging, and testing applications. And it would be a good idea - to use virtual environments to limit cross-project dependencies and keep your OS package list under control.
JSON JQ is a new GREP If you are a cloud system administrator, security analyst, or data scientist, you already use jq (JSON Query), and if you don't, you should.
Documentation Pandoc: My Missing Tool With the "everything as a code" approach, it's natural to treat documentation as a code and use the same source code management and delivery techniques. I know how to create and deliver documents. And now I found my missing link, static content generator - pandoc.
Ansible Ansible: Markdown Reports The previous post promised a simple reporting solution and two potential possibilities. Now it's time to go through the solution that would help you with report publications. The diagram from
Ansible Ansible: Format e-mail body. The whole automation idea is to minimize or exclude humans from the process. However, you need to notify users and sometimes you should do it in style.
Ansible Ansible, YAML, and JSON Ansible is very flexible with data types, and easily transforms primitives and even JSON strings, but from time to time you need to process and transform something a bit more complex than String to Boolean conversions.
Ansible Ansible: Iterations Iterations in Ansible are not first-class citizens. The language allows you a single task loop with one nested iteration. Anything more sophisticated than that should be implemented as a separate module. Again, the include_tasks command gives us a helping hand.
Ansible Ansible: Selections Let's discuss selections in Ansible: if-then-else and case/switch operators. Ansible offers conditional execution for single tasks, blocks, and task imports. In addition, it allows effectively simulate if-then selection.
MySQL Ghost Upgrade: A Bit of MySQL This morning I accidentally brought down this site. The Ghost CLI told me that there is a minor upgrade to version 4.11.0. Unfortunately, even though the start version
Ansible Ansible: Subroutines The second post in the Ansible: Control Structures series describes using Ansible core components to emulate subroutines - procedures and "packages." The whole paradigm of Ansible is the opposite of
Ansible Ansible: Control Structures Red Hat Ansible is a powerful and easy-to-learn automation product. Simplicity is one of the basic principles of the language. Yet, any task a titbit more complex than installing and starting an HTTPD server requires good old procedural control flows.
Ansible Ansible Variables: a Rookie Mistake The mistake I made could be excused for Java Developer, but not for a guy who spends days with Ansible. The root cause is the different variable visibility model. Red Hat Ansible does not appreciate role or play boundaries and dynamically evaluates a variable value for each impacted host.
Ansible Ansible: Conditional Playbooks I have praised Ansible tags all about the previous post. Unfortunately, tags don't go along with Ansible Tower's complex workflows. Let me guide you through the playbook transformation we've done. The answer to this challenge is extra variables.
Containers Maven Project with Docker Compose This little tweak streamlines the development lifecycle and simplifies build and test operations. If you build something with Docker and Apache Maven you could find this article useful.
Ansible How to run Ansible playbooks à-la Tower Our Red Hat Ansible projects drift to the Ansible Tower. I found that it much faster to do quick fixes and debug playbooks from the server rather than go through the full chain VSCode -> Git -> Tower. Well, to be productive, I automated the automation.
OpenSSL Quick Certificate Validation Check certificate validity for a site; what could be easier? It's a click away if the address of interest is in your browser. Learn how you can check expiration dates for multiple Learn how you can check expiration dates for multiple host or virtual hosts with SNI.
Oracle Cloud Infrastructure Enforce HTTPS With OCI Load Balancer To enforce secure connection you should enforce rewrite rules to rout your clients toward secure listener. The same could be done with load balancer in Oracle Cloud.
WebLogic Speeding up WLST Back in Java 7 days, when your WebLogic domain runs like a snail on a sunny meadow, you knew that you forgot to fix your random source. It is not
JDeveloper Easy JDK update Working on the integrated WebLogic server configuration, I run into a very neat Middleware 12c feature. The primary fix for the issue is to use old JDK8. When you have JDeveloper and domain configured, you can upgrade your installation to the desired JDK version, with simple steps below.
Red Hat Too much security: Is it a thing? What I love about Red Hat classes, you get a live environment . This time, my new lab was partially unavailable. I click on the link, glimpse the application page, and then I get a protocol error page.
OHS Graceful restart for Oracle HTTP Server 11g From time to time, you need to update configuration HTTP server configuration. but OHS 11g offers only full start and stops. Read how to do it gracefully.
Quarkus Easy Fix For Quarkus 1.2.0 Native Build The new Quarkus release has just arrived and I decided to refresh my project to see how it works with GraalVM on JDK 11. Well, the native build failed with an indistinct exception.
Containers RedHat CodeReady Containers update Today my during the container start I have got notification that version 1.3.0 is available. During setup I get error that my libvrt bundle is not compatible with the new release. So you can find how I made an error and fix it.
Linux Dude, where is my kernel? I've got a little bit lost, trying to to install VirtualBox Guest Additions on my freshly installed and upgraded CentOS 7 virtual machine. I have tried all the tricks I found and still Virtual Box installer wont able to find my kernel headers.
Oracle SOA Suite Automate SOA Infra configuration For the last six months, I work on the fully automated Oracle Fusion Middleware platform delivery . We use Ansible as a main automation tool and OEM for the most of the daily Ops routines.
