Hi alvin,
Thanks for answering so fast.
Initially we activate the autoscaling but then deactivate it.
Do you recommend activating it?
It's cluster consists of 3 hosts.
2 SSD (System) x host
3 SSD for CEPH x host
osd_pool_default_min_size = 2
osd_pool_default_size = 3
Pg_Num 512
1 single Pool
CEPH INFO:
# begin crush map
tunable choose_local_tries 0
tunable choose_local_fallback_tries 0
tunable choose_total_tries 50
tunable chooseleaf_descend_once 1
tunable chooseleaf_vary_r 1
tunable chooseleaf_stable 1
tunable straw_calc_version 1
tunable allowed_bucket_algs 54
# devices
device 0 osd.0 class ssd
device 1 osd.1 class ssd
device 2 osd.2 class ssd
device 3 osd.3 class ssd
device 4 osd. 4 class ssd
device 5 osd.5 class ssd
device 6 osd.6 class ssd
device 7 osd.7 class ssd
device 8 osd. 8 class ssd
# types
type 0 osd
type 1 host
type 2 chassis
type 3 rack
type 4 row
type 5 pdu
type 6 pod
type 7 room
type 8 datacenter
type 9 zone
type 10 region
type 11 root
# buckets
host S073 {
id -3 # do not change unnecessarily
id -4 class ssd # do not change unnecessarily
# weight 2,728
alg straw2
hash 0 # rjenkins1
item osd.0 weight 0.909
item osd.1 weight 0.909
item osd.2 weight 0.909
}
host S075 {
id -5 # do not change unnecessarily
id -6 class ssd # do not change unnecessarily
# weight 2,728
alg straw2
hash 0 # rjenkins1
item osd.3 weight 0.909
item osd.4 weight 0.909
item osd.5 weight 0.909
}
host S071 {
id -7 # do not change unnecessarily
id -8 class ssd # do not change unnecessarily
# weight 2,728
alg straw2
hash 0 # rjenkins1
item osd.6 weight 0.909
item osd.7 weight 0.909
item osd.8 weight 0.909
}
root default {
id -1 # do not change unnecessarily
id -2 class ssd # do not change unnecessarily
# weight 8,183
alg straw2
hash 0 # rjenkins1
item S073 weight 2,728
item S075 weight 2,728
item S071 weight 2,728
}
# rules
rule replicated_rule {
id 0
type replicated
min_size 1
max_size 10
step take default
step chooseleaf firstn 0 type host
step emit
}
# end crush map
