Cluster

Upgrade etcd in a patroni cluster

In a distributed database system like PostgreSQL managed by Patroni, etcd plays a critical role as the distributed key-value store for cluster coordination and configuration. As your system evolves, upgrading etcd becomes necessary to leverage new features, bug fixes, and(…)

Kured: No more patching anxiety for Kubernetes clusters

In your DevOps and containerization journey, let's discover together how a cloud-native product named Kured can save you from the patching fears of your Kubernetes platform.

Let’s upgrade Kubernetes with kubeadm

Upgrade the Control Plane After installing a Kubernetes cluster, I suggest we continue upgrading the cluster using kubeadm installation and configuration tools. So that you know, upgrading a cluster is done from version to version +1.

Easily build a kubernetes cluster with kubeadm

In the upcoming blog posts, I will cover monitoring with Prometheus in a Kubernetes infrastructure. As I started blogging, I decided it would be useful to delve into the design of the k8s infrastructure. This will allow you to approach(…)

JBoss EAP 7 – Cluster in Domain mode

It is time to show you how to build a cluster with Domain mode within JBoss EAP 7. Before you read this blog I suggest you to review the following blogs: JBoss terminologies, the(…)

Elastic (ELK) Stack – Elasticsearch Terminologies

In a previous blog, we got an overview on Elastic Stack (Elasticsearch, Logstash, Kibana, and Beets), in next blogs I will go through all these components to understand them, today we will go more in deep in(…)

Alfresco – Share Clustering fail with ‘Ignored XML validation warning’, again

In a previous blog, I mentioned an issue that I faced when upgrading an Alfresco Content Services 5.2 to 6.1 on a VM with no internet access. The solution was simply to change one of the schema(…)

ODA update-server to 19.12 fails on Patch GI with RHP

Sometimes giving a workshop is a good opportunities to test new things...this what happened to me today...  :-) While giving an ODA workshop, I thought it was a good opportunity to test patching to the new 19.12 release. However during(…)

Oracle 19c Grid Infrastructure for a cluster

By Mouhamadou Diaw In this previous blog , we deal with Oracle Restart and ACFS. We saw that using ACFS with Oracle Restart will require some manual tasks. The solution is to install a Grid Infrastructure(…)

ODA X8-2-HA cluster issue and NTP configuration

I have been recently deploying some new ODA X8-2-HA. After reimaging and creating the appliance, I had to patch the ODA. The day after, checking status, I could realize that my node 0 was not working as expected. I did(…)