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Create new pool and place new osd » History » Revision 5

Revision 4 (Jin-Guk Kwon, 09/14/2020 12:05 PM) → Revision 5/14 (Jin-Guk Kwon, 09/14/2020 12:05 PM)

h1. Create new pool and place new osd 

 h2. 1. create pool 

 manual 
 https://docs.ceph.com/docs/jewel/rados/operations/pools/#create-a-pool 

 <pre> 
 ceph osd pool create {pool-name} {pg-num} [{pgp-num}] [replicated] \ 
      [crush-ruleset-name] [expected-num-objects] 
 </pre> 

 osds are 5~10 -->    pg_num 512 
 osds are 10~50 --> pg_num 4096 
 osds are more than 50 --> need to calculation(pgcalc)  

 <pre> 
 ex) ceph osd pool create xruk-ssd-pool 128 128 
 </pre> 

 h2. 2. create rule 

 manual  
 https://docs.ceph.com/docs/master/rados/operations/crush-map/#creating-a-rule-for-a-replicated-pool 

 <pre> 
 ceph osd crush rule create-replicated <rule-name> <root> <failure-domain> <class> 
 </pre> 

 <pre> 
 ex) ceph osd crush rule create-replicated xruk-ssd-rule default host xruk-ssd 
 </pre> 

 h2. 3. set rule on pool 

 manual 
 https://docs.ceph.com/docs/master/rados/operations/crush-map/#device-classes 

 <pre> 
 ceph osd pool set <pool-name> crush_rule <rule-name> 
 </pre> 

 <pre> 
 ex) ceph osd pool set xruk-ssd-pool crush_rule xruk-ssd-rule 
 </pre> 

 h2. 4. update key 

 manual 
 https://docs.ceph.com/docs/mimic/rados/operations/user-management/ 

 <pre> 
 ceph auth caps USERTYPE.USERID {daemon} 'allow [r|w|x|*|...] [pool={pool-name}] [namespace={namespace-name}]' [{daemon} 'allow [r|w|x|*|...] [pool={pool-name}] [namespace={namespace-name}]'] 

 mon 'profile {name}'  
 osd 'profile {name} [pool={pool-name} [namespace={namespace-name}]]' 
 </pre> 

 <pre> 
 ex) ceph auth caps client.libvirt mon 'profile rbd' osd 'profile rbd pool=xruk-ssd-pool, profile rbd pool=hdd, profile rbd pool=ssd' 
 </pre> 

 h2. 5. set ceph application enable 

 <pre> 
 ceph osd pool application enable <pool-name> <app-name>', where <app-name> is 'cephfs', 'rbd', 'rgw', or freeform for custom applications 
 </pre> 

 <pre> 
 ex) 
 ~# ceph osd pool application enable xruk-ssd-pool rbd 
 enabled application 'rbd' on pool 'xruk-ssd-pool' 
 </pre>