On 03/23/2018 05:58 PM, Lenz Grimmer wrote: > Hi Wido, > > On 02/28/2018 03:42 PM, Wido den Hollander wrote: > >> I came across a few customers who would really like a status module >> which would just present a Read Only API with the status of the cluster. >> >> The current REST API module adds a few hurdles like creating a key and >> authenticating. While that's indeed safer it doesn't make it easy to use. >> >> Many of these users currently parse something like this: >> >> $ ceph status --format=json >> >> Would it be logical to have a very simple manager module which exposes >> just a 'status' API through HTTP? > > As I just stumbled over it by accident: Ceph-Dash actually seems to > provide exactly that: > > https://github.com/Crapworks/ceph-dash > Yes, that would work, but it's not a Manager Module and thus not so easy to set up. I was thinking about a simple HTTP server which just dumps a JSON when you perform a request to "/" and gives you back the status of the cluster without any authentication. Very simple to consume with a monitoring system. Wido > [CUT] > > REST Api > > If you access the address via commandline tools or programming > languages, use content-type: application/json and you will get all the > information as a json output (which is actually the json formatted > output of ceph status --format=json. > > Anyways, this is not a wrapper around the ceph binary, it uses the > python bindings of librados. > > This api can be requested by, for example, a nagios check, to check your > overall cluster health. This brings the advantage of querying this > information without running local checks on your monitor nodes, just by > accessing a read only http api. > [CUT] > > Lenz >
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