Customizing store-monitor

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


Requires: none

Required by: store-daemon, store-gateway

Considerations: none

Settings set by store-monitor

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

setting description
/deis/store/adminKeyring keyring for an admin user to access the Ceph cluster
/deis/store/fsid Ceph filesystem ID
/deis/store/hosts/$HOST hostname (not IP) of the host running this store-monitor instance
/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
/deis/store/monSetupComplete set when the Ceph cluster setup is complete
/deis/store/monSetupLock IP address of the monitor instance that is or has set up the Ceph cluster
/deis/store/minSize minimum number of store-daemons necessary for the cluster to accept writes
/deis/store/pgNum number of Ceph placement groups for the storage pools
/deis/store/size number of replicas for data stored in Ceph

Settings used by store-monitor

The store-monitor component uses no keys from etcd other than the ones it sets.

Using a custom store-monitor image

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

$ deisctl config store-monitor 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-monitor set

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