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915eb1d625
* all credentials moved to globals * cassandra fix * centralized certificates, removed unneded entities * minor fixes, local-multi-namespace example fixes * removing unneeded sections in the yaml files * updates to changelog and multiple namespaces examples * fixing last couple of services, removed not needed secrets, centralized httpclientconfig.json and ssl.properties * minor improvements * changelog reformatted * fixing startupprobe and changelog Co-authored-by: Gleb Boushev <4c74356b41@outlook.com>
GlusterFS on kubernetes
The goal of this project is to spin-up GlusterFS on Kubernetes, so we can use the cluster as a Storage class in our environment.
This project is based on the gluster-kubernetes project - https://github.com/gluster/gluster-kubernetes. It follows the instructions described in the setup guide (https://github.com/gluster/gluster-kubernetes/blob/master/docs/setup-guide.md). However, there are subtle differences:
- We are using Ubuntu (Debian based) instead of CentOS as the base OS. Hence a few package/commands are different.
- Certain resource types are different in Kubernetes 1.17/1.18:
- Hence need to update the yamls
- Also need to update the deploy script
- Based on the issues seen, we need to run a few pods on the master nodes. See page for details: https://connectustechnologies.atlassian.net/wiki/spaces/TW/pages/123732038/Creating+GlusterFS+on+Kubernetes (see Error-6)
Pre-requisite of running the gk-deploy script:
- Need to have Kubernetes running on 3 nodes setup with Glusterfs-client installed on all the nodes
- Preferably a separate volume should be attached to these nodes.
- gk-deploy script will create a new namespace "gluster-ns"
For other issues faced during deployment, see here:
Usage
-
Creation: ./gk-deploy -g --admin-key <ADMIN_KEY> --user-key <USER_KEY> -n <GLUSTER_NAMESPACE> -v topology.json.
- As an example: ./gk-deploy -g --admin-key admin --user-key user -n glusterns -v topology.json
- Namespace specifics:
- If namespace is passed, we will create (if it does not exist) and use that namespace for glusterFS resources.
- If namespace is NOT passed, we will create (if it does not exist) namespace='gluster-ns' and use it for glusterFS resources.
-
Deletion: ./gk-deploy --admin-key <ADMIN_KEY> --user-key <USER_KEY> --abort -v -n <GLUSTER_NAMESPACE>
- Note:
- Gluster-namespace should be passed.
- Also, this won't delete the glusterfs pods. To remove the pods, delete the daemon set, then delete the namespace - 'gluster-ns': Example:
- kubectl delete daemonset glusterfs
- kubectl delete namespace gluster-ns