ceph 命令: 创建ssd池

# show crush map
[root@ceph-1 ~]# ceph osd crush rule list
replicated_rule
rule.ssd
rule.hdd
rbd.csi.ssd
rbd.csi.hdd


# show 
[root@ceph-1 ~]# ceph osd crush rule dump rbd.csi.ssd
{
    "rule_id": 3,
    "rule_name": "rbd.csi.ssd",
    "ruleset": 3,
    "type": 1,
    "min_size": 1,
    "max_size": 10,
    "steps": [
        {
            "op": "take",
            "item": -2,
            "item_name": "default~ssd"
        },
        {
            "op": "chooseleaf_firstn",
            "num": 0,
            "type": "host"
        },
        {
            "op": "emit"
        }
    ]
}

# create pool

ceph osd pool create rbd.pc-1-2-3.ssd 32 32 rbd.csi.ssd
ceph osd pool create rbd.pc-4.ssd 32 32 rbd.csi.ssd
ceph osd pool create rbd.pc-5.ssd 32 32 rbd.csi.ssd