Today, Sheng Liang unveiled project Longhorn as a new way to build distributed block storage for cloud and container-based platform. It has grown from 30 to 45 solutions under the storage banner, there were also governance expansions of public cloud integrations such as AWS EBS, Google persistent disk or Azure disk storage. Local PV is based on Kubernetes local persistent volumes but it has a dynamic provisioner. Streamlining the infrastructure supporting Kubernetes workloads is one of the most significant criteria when IT professionals evaluate their technology roadmaps. Local PV offers extremely high performance close to what you get by reading from and writing to the disk directly, but it doesnât offer features such as replication, which are built in Jiva and cStor. Octopus brings several optimizations in caching mechanisms and uses more modern kernel interfaces (See more at the official page). The storage controller and replicas are themselves orchestrated using Kubernetes. Running in user space can avoid a large amount of system calls, post spectere/meltdown, etc. I will write a separate blog about what is longhorn, it’s features and why we chose longhorn, but in short, longhorn employs a clever and simple approach to container data connectivity, data availability (replication), data protection (snapshot). The chart only shows data for offerings used by at least 1% of respondents with at least one Kubernetes cluster. MySQL) without any data corruption. OpenEBS — The containerized storage. Traditional vendors such as NetApp, Pure Storage and VMware also provide storage plugins for Kubernetes. If you read my previous blog post from 2019, you know that I was playing 2 backends — Jiva and cStor. A self hosted alternative to Ngrok, Next: Rook is a solid option overall, and with Ceph it offers a battle tested storage solution that has been used in production for years, powering very large clusters; unfortunately I ran into some serious stability issues with the latest versions (1.x) and eventually I gave up after spending a considerable amount of time trying to solve them. The following subsection introduces storage solutions added into the existing test suite. n=1149. I have tested extensively a few open source solutions, namely Rook, Rancher’s Longhorn, and OpenEBS. I use Wasabi as S3 compatible storage and I usually just delete the default snapshot location and then kubectl apply the following: I donât have much to say about Local PV (other than I love it because of the performance), because itâs very simple and doesnât have all the features that Jiva and cStor have. Container-native storage exposes the underlying storage services to containers and microservices. The results showed that early technology adoption was influenced by then-current vendor relationships. Managed Kubernetes offerings can reduce the complexity and skills needed to manage large container deployments. You can add more storage by either adding disks to a cStor pool, or expanding a pool if you can resize the underlying disk (some cloud providers allow resizing disks). It can store data either in a directory, or use disks; in the first case the hostpath can be shared by multiple persistent volumes, while when using disks each persistent volume requires a separate device. It has a great UI that makes management of storage very easy, as well as built in backups to S3 compatible storage. By default, Jiva creates its pods in the same namespace as the volume. However, they are not well integrated into Kubernetes tools and workflow, so storage administrators may find them more difficult to maintain and configure. If you look at their official GitHub, you can see that they are placing it into a near-maintenance mode and there is not any update in terms of cloud-native storage features.
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