Customizing store-daemon

The following settings are tunable for the Store component’s daemon service.


Requires: store-monitor

Required by: store-gateway

Considerations: none

Settings set by store-daemon

The following etcd keys are set by the store-daemon component, typically in its /bin/boot script.

setting description
/deis/store/osds/$HOST Ceph OSD ID for this OSD instance (generated by Ceph)

Settings used by store-daemon

The following etcd keys are used by the store-daemon component.

setting description
/deis/store/adminKeyring keyring for an admin user to access the Ceph cluster (set by store-monitor)
/deis/store/fsid Ceph filesystem ID (set by store-monitor)
/deis/store/hosts/* deis-monitor hosts (set by store-monitor)
/deis/store/maxPGsPerOSDWarning threshold for warning on number of placement groups per OSD (set by store-monitor)
/deis/store/monKeyring keyring for the monitor to access the Ceph cluster (set by store-monitor)
/deis/store/monSetupComplete set when the Ceph cluster setup is complete (set by store-monitor)
/deis/store/monSetupLock host of store-monitor that completed setup (set by store-monitor)
/deis/store/minSize minimum number of store-daemons necessary for the cluster to accept writes (set by store-monitor)
/deis/store/pgNum number of Ceph placement groups for the storage pools (set by store-monitor)
/deis/store/size number of replicas for data stored in Ceph (set by store-monitor)

Using a custom store-daemon image

You can use a custom Docker image for the store-daemon component instead of the image supplied with Deis:

$ deisctl config store-daemon set image=myaccount/myimage:latest

This will pull the image from the public Docker registry. You can also pull from a private registry:

$ deisctl config store-daemon set

Be sure that your custom image functions in the same way as the stock store-daemon image shipped with Deis. Specifically, ensure that it sets and reads appropriate etcd keys.