Open Infrastructure

h1. Create new pool and place new osd

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>

ceph osd pool create xruk-ssd-pool 128 128

</pre>

create rule 

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>

ceph osd crush rule create-replicated xruk-ssd-rule default host xruk-ssd

</pre>

set rule on pool

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>

ceph osd pool set xruk-ssd-pool crush_rule xruk-ssd-rule

</pre>

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>

~# ceph osd pool application enable xruk-ssd-pool rbd

enabled application 'rbd' on pool 'xruk-ssd-pool'

</pre>