Category: IT Infrastructure
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How to prepare a new node on a Ceph cluster
In this article we will concentrate on Microceph implementation of the Ceph storage platform Adding a new node to the Microceph cluster is a relatively simple task I already described in a separate article. But, there are a few extra steps that you can take to just make it better. Drives and OSD Ceph OSD…
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How to resize Linux MD RAID array?
Linux MD, also known as the Multiple Device , is a software RAID (Redundant Array of Independent Disks) system used in Linux. It allows you to create virtual devices by combining multiple physical devices, such as hard drives or partitions, into a single array. This array can provide redundancy, improve performance, or both, depending on…
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How to put drives to sleep in OpenMediaVault?
By default, OpenMediaVault NAS software will prioritize performance over power consumption and noise levels of disk drives. It makes sense when running heavily loaded NAS, but for home usage it’s an overkill. If my NAS is used only a few times a day, it makes no sense to keep HDDs spinning all the time. Luckily,…
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How to run Home Assistant in Kubernetes
There is almost nothing better than running your smart home on your own server! And it’s hard to find better smart home system than Home Assistant itself. I used to run my instance of Home Assistan on a QEMU virtual machine inside old rack server (Dell R620 with intel Xenon E5-E2630L, 64GB RAM and 10TB…
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How to add and remove host from a Microceph cluster
What is Microceph and Ceph Ceph is a highly scalable, open-source distributed storage platform. It supports object, block, and file storage, and is designed for large-scale, enterprise-level environments. Ceph provides robust features for redundancy, fault tolerance, and scalability, making it suitable for complex and demanding storage needs. MicroCeph is a lightweight deployment and management tool…
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Bitcoin mining, AWS, WordPress and security leaks
A few weeks ago, my AWS (Amazon Web Services) account was hacked, someone got access to AWS Console, created a bunch of EC2 instances, Lambdas, and started mining cryptocurrencies. I realized what is happening only a few hours later. The price was high and low at the same time. It was $500. So not too…