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63 lines
2.5 KiB
Markdown
63 lines
2.5 KiB
Markdown
# SEAWEEDFS - helm chart (2.x)
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## Info:
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* master/filer/volume are stateful sets with anti-affinity on the hostname,
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so your deployment will be spread/HA.
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* chart is using memsql(mysql) as the filer backend to enable HA (multiple filer instances)
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and backup/HA memsql can provide.
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* mysql user/password are created in a k8s secret (secret-seaweedfs-db.yaml) and injected to the filer
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with ENV.
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* cert config exists and can be enabled, but not been tested.
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## Prerequisites
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### Database
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A running MySQL-compatible database is expected by default, as specified in the `values.yaml` at `filer.extraEnvironmentVars`.
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This database should be pre-configured and initialized by running:
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```sql
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CREATE TABLE IF NOT EXISTS filemeta (
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dirhash BIGINT COMMENT 'first 64 bits of MD5 hash value of directory field',
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name VARCHAR(1000) BINARY COMMENT 'directory or file name',
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directory TEXT BINARY COMMENT 'full path to parent directory',
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meta LONGBLOB,
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PRIMARY KEY (dirhash, name)
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) DEFAULT CHARSET=utf8;
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```
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Alternative database can also be configured (e.g. leveldb) following the instructions at `filer.extraEnvironmentVars`.
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### Node Labels
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Kubernetes node have labels which help to define which node(Host) will run which pod:
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* s3/filer/master needs the label **sw-backend=true**
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* volume need the label **sw-volume=true**
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to label a node to be able to run all pod types in k8s:
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```
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kubectl label node YOUR_NODE_NAME sw-volume=true,sw-backend=true
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```
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on production k8s deployment you will want each pod to have a different host,
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especially the volume server & the masters, currently all pods (master/volume/filer)
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have anti-affinity rule to disallow running multiple pod type on the same host.
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if you still want to run multiple pods of the same type (master/volume/filer) on the same host
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please set/update the corresponding affinity rule in values.yaml to an empty one:
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```affinity: ""```
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## PVC - storage class ###
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on the volume stateful set added support for K8S PVC, currently example
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with the simple local-path-provisioner from Rancher (comes included with k3d / k3s)
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https://github.com/rancher/local-path-provisioner
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you can use ANY storage class you like, just update the correct storage-class
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for your deployment.
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## current instances config (AIO):
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1 instance for each type (master/filer+s3/volume)
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you can update the replicas count for each node type in values.yaml,
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need to add more nodes with the corresponding labels.
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most of the configuration are available through values.yaml
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