Calamariwebinar Final 60171

8/10/2019 Calamariwebinar Final 60171

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Calamari Overview

June 2014


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Calamari

A high level interface for Cephadministrators:

!

Graphical user interface

REST API

!

!

First released in 2013 as part ofCeph Enterprise

Inktank!

Recently released as open sourcesoftware by Red Hat

!


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Ceph CLI

# ceph statuscluster 2f4a59b1-ea72-4153-929e-eba559aca948

healthmonma

pmdsma

posdmappgmap

HEALTH_WARN

3e1: 1 mons at

near full osd(s){a=100.44.151.141:6789/0},{0=a=up:active}

election epoe10:e16:

v29:

1/1/1 up3 osds: 3 up, 3 in264 pgs, 3 pools, 1894 bytes data, 20 objects

315 GB used, 5655 MB / 338 GB avail128136

7101 B/s

active+clean+replayactive+clean rd,6 op/sclient io


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For contrast: Ceph CLI

# ceph osd dumpepoch 20fsid 2f4a59b1-ea72-4153-929e-eba559aca948 created

2014-06-23 23:22:52.927811 modified 2014-06-2323:28:55.310487

flagspool 0 'rbd' replicated size 3 min_size 1 crush_ruleset 0 object_hash rjenkins pg_nu

pool 1 'cephfs_data' replicated size 3 min_size 1 crush_ruleset 0 object_hash rjenkistripe_width 0pool 2 'cephfs_metadata' replicated size 3 min_size 1 crush_ruleset 0 object_hash rjmax_osd 3osd.0 up in weight 1 up_from 19 up_thru 19 down_at 18 last_clean_interval [15,16)100.44.151.141:6804/29476 exists,up fc3c4961-1b55-4038-8b21-7b39f9c1d004osd.1 up in weight 1 up_from 19 up_thru 19 down_at 18 last_clean_interval [15,16)

100.44.151.141:6810/29482 exists,up f246b34d-1023-4e86-a5cb-f068d2050a81osd.2 up in weight 1 up_from 19 up_thru 19 down_at 18 last_clean_interval [15,16)100.44.151.141:6822/29488 exists,upblacklist 100.44.151.141:6815/26222 blacklist100.44.151.141:6823/27374

87335244-466c-4c42-859f-bf00109230a5expires 2014-06-23 23:49:11.465028 expires2014-06-23 23:52:52.126655


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REST example


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Calamari API

More than a proxy to Ceph CLI:

High level operations: dont just issuea command, wait until it has taken

effect.Consistency: dont consider operations

complete until related state is updated in

Calamari.

Validation and informative errors.Asynchronous: a request ID to monitor

for completion or cancellation, instead

of blocking during operation.

!

!

!

!


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Accessible APIdocumentation

Available at http://calamari.readthedocs.org


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Management Integration

EASY

isnow

A higher level API iseasier to integrate with:

!

management tools likeHorizon

open sourcemonitoring stacks

your custom tools

!

!

!

Build custom dashboardsfor info you care about

!


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Calamari Architecture

LAN

salt-minion Diamond

Ceph server

salt-minion Diamond

Ceph server

salt-minion Diamond

Ceph server

salt-master graphite

Calamari REST API

Calamari service

Calamari User Interface your app here


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Technologies in Calamari

Python/Javascript with emphasis onre-use:

!

Existing system components wherever!

possible: SaltStack,Diamond, ZeroMQ,

Familiar frameworks:

graphite,PostgreSQL

Django,!

django-rest-framework, angular.js

Downside: lots of dependencies - workongoing to simplify packaging.

!


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Calamari Extensibility

Exploit existing frameworks pluginengines:

!

Extend agent-side code with existing

module interfaces of Diamond andSaltStack

Extend Calamari server with new

ZeroRPC services and

django-rest-framework ViewSets.

!

!

REST is naturally extensible using URLnamespaces

User Interface divided into apps

!

!


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Calamari is now Open Source

Source code:

https://github.com/ceph/calamari

https://github.com/ceph/calamari-clients

Mailing list:

http://lists.ceph.com/listinfo.cgi/ceph-calamari-ceph.c om

Issue tracker:

http://tracker.ceph.com/projects/calamari

Documentation:

http://calamari.readthedocs.orgLicensing:

LGPL (python) and MIT (javascript)


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Future

Inktank Ceph Enterprise 1.2 coming soon:!

http://www.inktank.com/enterprise/!

Ceph Developer Summit!

When: Tuesday June 24thWhere: online

Plan Giant and Hammer Ceph releases

Kick off community work on Calamari

!

!

!

!

Get involved with the Ceph communityat:

http://www.ceph.com

!


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Calamariwebinar Final 60171