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Added details on database requirements

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C2D 2022-08-01 02:07:09 +02:00
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k8s/helm_charts2/README.md
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@ -1,6 +1,6 @@
## SEAWEEDFS - helm chart (2.x)
# SEAWEEDFS - helm chart (2.x)
### info:
## 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)
@ -9,12 +9,26 @@ and backup/HA memsql can provide.
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.
## Prerequisites
### Database
A running MySQL-compatible database is expected by default, as specified in the `values.yaml` at `filer.extraEnvironmentVars`.
This database should be pre-configured and initialized by running:
```sql
CREATE TABLE IF NOT EXISTS filemeta (
dirhash BIGINT COMMENT 'first 64 bits of MD5 hash value of directory field',
name VARCHAR(1000) BINARY COMMENT 'directory or file name',
directory TEXT BINARY COMMENT 'full path to parent directory',
meta LONGBLOB,
PRIMARY KEY (dirhash, name)
) DEFAULT CHARSET=utf8;
```
s3/filer/master needs the label **sw-backend=true**
Alternative database can also be configured (e.g. leveldb) following the instructions at `filer.extraEnvironmentVars`.
volume need the label **sw-volume=true**
### Node Labels
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:
```
@ -29,7 +43,7 @@ please set/update the corresponding affinity rule in values.yaml to an empty one
```affinity: ""```
### PVC - storage class ###
## 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)
@ -38,7 +52,7 @@ 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):
## 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,