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Terraform tips’n’tricks: getting the latest Oracle Linux 8 image OCID programmatically
This post is a direct follow up to the previous one where I shared how I used a Terraform data source to fetch the latest Oracle-provided Oracle Linux 7 cloud image identifier. This time around I’d like to fetch the latest Oracle Cloud ID (OCID) for Oracle Linux 8. It’s a different approach and instead…
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Terraform tips’n’tricks: getting the latest Oracle Linux 7 image OCID programatically
As with all cloud providers you need to specify an operating system image when creating virtual machines using Terraform in Oracle Cloud Infrastructure (OCI). This can either be an Oracle supplied image, or a custom image you built. This post describes how to fetch the most recent Oracle-provided image for Oracle Linux 7 in Terraform.…
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A mostly academic post about startup triggers and when they fire in Real Application Clusters
Out of curiosity I wanted to figure out when and how often startup triggers fire in RAC 19c. Do they fire when all instances of the database are up (e.g. only once), or do they fire for once each instance? A little experiment reveals the behaviour. As the title reads this is mostly academic, I…
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Device name persistence in the cloud: OCI
Device name persistence is an important concept for everyone deploying the Oracle database. In this little series I’ll show how you can achieve device name persistence with Oracle Cloud Infrastructure (OCI) and block storage. I am hoping to share future parts for Azure and AWS. In the example I’m going to prepare a cloud VM…
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Ansible tips’n’tricks: using the OCI Dynamic Inventory Plugin in playbooks
After having covered how to configure the Ansible Dynamic Inventory Plugin for Oracle Cloud Infrastructure (OCI) in the previous posts now it’s time to get it to work with my simple-app cloud application. Before I go into more detail, I’d like to add the usual caveat first. Caveat As I said in the previous post,…
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Ansible Dynamic Inventory Plugin for OCI: where are all my hosts?
I wrote about the configuration of the Ansible Dynamic Inventory Plugin for Oracle Cloud Infrastructure (OCI) in a previous post. As it seems to happen all the time, the length of the post escalated quickly. When I finished the previous post there was still a lot to say! For example, I wanted to share the…
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Ansible tips’n’tricks: configuring the dynamic inventory plugin for Oracle Cloud Infrastructure
As yet another preparation for a talk I’m about to give later this year I ran into a documentation bug concerning the use of the Ansible Dynamic Inventory plugin for Oracle Cloud Infrastructure. It has since been fixed, but it prompted me to write the entire procedure down anyway as I couldn’t really make sense…
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Handling kernel upgrades with Ansible prior to an Oracle installation
As part of the process of setting up VMs in the cloud for use with the Oracle database it is frequently necessary to update the systems to the latest and greatest, and hopefully more secure packages before the Oracle installation can begin. In a similar way I regularly upgrade the (cloud-vendor provided) base image when…
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Oracle Cloud Infrastructure: using Network Security Groups and the caveat with the subnet’s default security list
This is going to be one of these posts I’m mainly writing to myself, in the hope that a) I don’t forget about that topic too soon and b) someone might have the same question and doesn’t want to spin up an environment to find out. Broadly speaking Oracle Cloud Infrastructure (and some other cloud…
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Upgrading oraclelinux-release-el7 might trigger an upgrade to UEK Release 6
While building a demo environment for an upcoming presentation I noticed an upgrade from UEK 5 to UEK 6 on my Oracle Linux 7 VM. As it turned out, the kernel change has been triggered by an upgrade of oraclelinux-release-el7 RPM. I am a great fan of Oracle’s UEK and the team behind it, so…
