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diff --git a/k8s/README.md b/k8s/README.md new file mode 100644 index 000000000..c5615522c --- /dev/null +++ b/k8s/README.md @@ -0,0 +1,48 @@ +## SEAWEEDFS - helm chart (2.x) + +### info: +* master/filer/volume are stateful sets with anti-affinity on the hostname, +so your deployment will be spread/HA. +* chart is using memsql(mysql) as the filer backend to enable HA (multiple filer instances) +and backup/HA memsql can provide. +* mysql user/password are created in a k8s secret (secret-seaweedfs-db.yaml) and injected to the filer +with ENV. +* cert config exists and can be enabled, but not been tested. + +### prerequisites +kubernetes node have labels which help to define which node(Host) will run which pod. + +s3/filer/master needs the label **sw-backend=true** + +volume need the label **sw-volume=true** + +to label a node to be able to run all pod types in k8s: +``` +kubectl label node YOUR_NODE_NAME sw-volume=true,sw-backend=true +``` + +on production k8s deployment you will want each pod to have a different host, +especially the volume server & the masters, currently all pods (master/volume/filer) +have anti-affinity rule to disallow running multiple pod type on the same host. +if you still want to run multiple pods of the same type (master/volume/filer) on the same host +please set/update the corresponding affinity rule in values.yaml to an empty one: + +```affinity: ""``` + +### PVC - storage class ### + +on the volume stateful set added support for K8S PVC, currently example +with the simple local-path-provisioner from Rancher (comes included with k3d / k3s) +https://github.com/rancher/local-path-provisioner + +you can use ANY storage class you like, just update the correct storage-class +for your deployment. + +### current instances config (AIO): +1 instance for each type (master/filer+s3/volume) + +you can update the replicas count for each node type in values.yaml, +need to add more nodes with the corresponding labels. + +most of the configuration are available through values.yaml + |
