Managing and Monitoring SUSE Enterprise Storage · SUSE Enterprise Storage Tim Serong Senior...
Transcript of Managing and Monitoring SUSE Enterprise Storage · SUSE Enterprise Storage Tim Serong Senior...
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Managing and Monitoring SUSE Enterprise Storage
Tim SerongSenior Clustering Engineer
Eric JacksonSenior Software Developer Distributed Storage
Tim SerongSenior Clustering Engineer
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SUSE Enterprise Storage...in 30 seconds or less
• Massively scalable
• No bottlenecks or single points of failure
• Object storage, block storage
• Based on Ceph
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SUSE Enterprise Storage...in 30 seconds or less
• Data stored redundantly
• Lots of disks (OSDs) in lots of storage nodes
• A few monitor (MON) nodes
• All on commodity hardware
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Deployment
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DIY Deployment
• Boot a bunch of nodes
• Install SUSE Linux Enterprise Server 12
• Add SUSE Enterprise Storage
• Run ceph-deploy
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DIY Deployment
# ceph-deploy new node1 node2 node3
# ceph-deploy mon create-initial
# ceph-deploy osd prepare node1:sdb
# ceph-deploy osd prepare node1:sdc
…
# ceph-deploy calamari --master node0 \
connect node1 node2 node3 …
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Or, Take a Crowbar to it
• Same technology as SUSE OpenStack Cloud
• Install one admin node
• PXE boot everything else
• Click to deploy
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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Or, Take a Crowbar to it
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iSCSI
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Configuring iSCSI today
• RBD mapped devices
• Targetcli
- interactive
- command line
• Iblock backstore
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Configuring iSCSI challenges
• Simple configuration requires a dozen steps
• Sometimes command order matters
• Locally saved configuration
• Synchronizing redundancy across gateways
• Experimentation can be cumbersome
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Lrbd
• Uses rbd and targetcli
• Configuration stored in Ceph
• Synchronization is automatic
• Experimentation is quick
• Configuration format is JSON
• Command line options, man pages
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Lrbd information
• Github https://github.com/SUSE/lrbd
• Wiki tutorial https://github.com/SUSE/lrbd.wiki
• 30 configuration samples
- /usr/share/doc/packages/lrbd/samples
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Monitoring
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Is it Working?
# ceph status
cluster 565bbaaf-11e9-4105-934a-6b468f0b7b7ehealth HEALTH_OKmonmap e1: 1 mons at {node1=192.168.124.81:6789/0} election epoch 1, quorum 0 node1osdmap e12: 2 osds: 2 up, 2 in pgmap v118: 64 pgs, 1 pools, 1024 kB data, 3 objects 74192 kB used, 38817 MB / 38889 MB avail 64 active+clean
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Is it Working?
# ceph status
cluster 565bbaaf-11e9-4105-934a-6b468f0b7b7ehealth HEALTH_WARN 33 pgs degraded; 35 pgs stuck... monmap e1: 3 mons at {ceph2=...,ceph3=...,ceph4=...}, election epoch 22, quorum 0,1,2 ceph2,ceph3,...osdmap e411: 52 osds: 52 up, 52 inpgmap v1014: 4288 pgs, 4 pools, 0 bytes data, ... 2466 MB used, 12659 GB / 12662 GB avail 33 active+degraded 2 active+remapped 4253 active+clean
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Is it Working?
# ceph status
cluster c9d3ae97-2f4c-4d91-a3f7-ff42bce754dfhealth HEALTH_WARN 2174 pgs backfill; 367 pgs backfilling; 3271 pgs degraded; 23 pgs down; 57 pgs peering; 35 pgs recovering; 188 pgs recovery_wait; 227 pgs stale; 26 pgs stuck inactive; 3065 pgs stuck unclean; recovery 2519083/14004502 objects degraded (17.988%); 1/148 in osds are downmonmap e3: 3 mons at {a001=172.16.25.1:6789/0,a002=172.168.25.2:6789/0,a003=172.16.25.3:6789/0}, election ...osdmap e51357: 168 osds: 147 up, 148 in pgmap v7243525: 20480 pgs, 5 pools, 1183 GB data, 5609 objects 3330 GB used, 88846 GB / 92177 GB avail 2519083/14004502 objects degraded (17.988%) 9 inactive 16755 active+clean 10 degraded+remapped 9 active+degraded+remapped 361 active+degraded+remapped+backfilling 39 stale+active+degraded+remapped+wait_backfill 30 peering 154 active+recovery_wait 171 stale+active+clean 22 active+recovery_wait+degraded+remapped 14 active+remapped+wait_backfill 23 down+peering 3 stale+active+degraded+remapped+backfilling 3 stale+active+recovery_wait 2 active+remapped 19 degraded 673 active+degraded 3 active+remapped+backfilling 4 remapped+peering 6 active+recovery_wait+remapped 3 active+recovery_wait+degraded 11 stale+active+degraded 2121 active+degraded+remapped+wait_backfill 35 active+recovering
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Is it Working?
• What do we care about, right now?‒ Overall cluster health
‒ MON quorum
‒ OSD status
‒ PG status
‒ Disk used/free
‒ Is anything dead?
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Is it Working Well?
• What do we care about, long term?‒ What's CPU bound?
‒ What's disk bound?
‒ What's network bound?
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Enter Calamari and Romana
• Ceph GUI, included with SUSE Enterprise Storage
• Calamari is the backend (REST API)
• Romana is the frontend (GUI)
• Provides monitoring and some management
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Cluster Status
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Cluster Status
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Cluster Performance
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Cluster Performance
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Cluster Performance
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Management
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When Everything is Fine
• OSD management
• Pool / Placement Group management
• iSCSI targets
• Users, authentication
• Adding new nodes, disks, etc.
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Cluster Settings
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OSD Management
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Pool / Placement Group Management
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Pool / Placement Group Management
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CLI Tools for...
• iSCSI targets
• Users, authentication
• Adding new nodes, disks, etc.
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When Everything is Not Fine
• Dead disks
• Dead nodes
• Half the building is on fire...
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Calamari will tell you about it...
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...and help you find the problem
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Again, Other Tools for...
• Redeploying
• Adding new nodes
• Replacing OSDs
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Beneath the Surface
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Calamari Consists Of...
• Romana (the frontend)
• Calamari (the backend REST API)
• Salt (communication and minor configuration)
• Graphite (metrics, graphs)
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Usually...
# zypper in romana
# calamari-ctl initialize[INFO] Loading configuration…[INFO] Starting/enabling salt... ...Username (leave blank to use 'root'): ...
# ceph-deploy calamari --master node0 \
connect node1 node2 node3 …
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In Practice, Right Now
• Calamari Node:‒ Romana, Calamari, Salt Master, Graphite/Carbon
• Storage Nodes:‒ Salt Minion, Diamond
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Variations
• More Salt with your Calamari?
• Longer metric retention/etc/carbon/storage-schemas.conf
• BYO Graphite
• Less Salt with your Calamari?
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Alternatives
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Alternatives
• Intel Virtual Storage Manager
• InkScope
• openATTIC
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Virtual Storage Manager
• Intel
• Openstack Horizon Interface
• Django, Python
• Released 2.0 beta 1 on August 21
• Packages incomplete at OBS
- https://build.opensuse.org/project/show/home:swiftgist:vsm
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InkScope
• Orange Labs
• AngularJS and Python REST api
• Rados gateway user management
• Packages at OBS
- https://build.opensuse.org/package/show/home:swiftgist/inkscope
Images from https://github.com/inkscope/inkscope/tree/master/screenshots
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openATTIC
• IT-Novum GmbH
• AngularJS and Python REST api
• Released 2.0.1 on July 21
• Complete Linux storage management system
• Demo
- http://demo.openattic.org/openattic/
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Questions?
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Thank you.
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For more information aboutSUSE Enterprise Storage:http://suse.com/storage
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