OLVM Gluster data domain healing - (Addressing split brain)

 

In recent years, the tremendous growth of applications, and these applications started generating huge volumes of data be it from mobile devices or be it from the web. As more and more such applications are being built, they needed to deliver the content directly to the user at a faster rate irrespective of if they are using a Mobile, Tablet, Laptop, Desktop, or any such device.  Along with this, handling a larger volume of files became a challenge, needs a lot of Metadata related to the file needs to be stored and accessed when needed. Data storage once looked very easy, became a big challenge now.

Storage technologies are rapidly changing in the last 3 decades, Current trend is towards software-driven data center technologies. Now we have software-driven cluster files systems such as Gluster, which gives you more elasticity and scalability. 

In the clustered environment there is a possibility you will face this split-brain scenario. In simple terms, split-brain occurs when two nodes of a cluster are disconnected. Each node thinks the other one is not working.

Azure template creation for DB - Part 2 ( Cloning new VM using snap disks)

Intro

In this era, cloud technology is booming at a rapid pace and businesses are focusing on optimizing IT infrastructure workloads by adopting cloud models like AWS, Azure, GCP, and OCI. Cloud technologies enable the organization to get on-demand services and get the advantage of quick environment provisioning. A few years back organizations were hesitant to move to the cloud due to security concerns. But everything has changed because as all cloud providers have come up with strong protection for data using various encryption technologies.

Whenever you need to build a new database environment for customers, Azure cloud makes this super easy using the snapshot feature. This enables the fast provision of new environments for complex database systems like Oracle. Even this feature can be used as a backup feature for major database changes.

The current oracle image does not consist of Oracle ASM.  In this blog, I will give an insight into how to clone VM using snap disks.

1. VM cloning steps

My Azure template creation for DB - Part 1 blog: https://chanaka-dbhelp.blogspot.com/2022/06/azure-template-creation-for-db.html illustrates the steps to create a snapshot disk with software-only installations.

In this article, I will elaborate on how to clone the new VM using snapshot disks.

OLVM intergration with OEM 13c - (OLVM Monitoring)

 

Intro

Nowadays businesses heavily depend on online mission-critical databases and applications. The online market is 24X7 so it's important they must be on top of the infrastructure monitoring. This helps system engineers, and database engineers to proactively react to alerts before they become major incidents. Monitoring and alerting play a vital role in enterprise IT  infrastructure. 

Companies are absorbing the oracle virtualization platform to host their databases and applications. It's of paramount importance to get alerts from the virtualization environment. Recently oracle integrate OLVM with oracle 13c OEM, which eases the administration overhead and helps the database administrators to manage infrastructure using the centralized console. Oracle 13c OEM is a well-mature product for monitoring and alerting, Also has many features and flexibility to tune the alerting as per the infrastructure.

In this article, I will cover the steps of how can we integrate OLVM with OEM13c.