###############centos7
mkdir my-cluster
cd my-cluster
yum install ceph-deploy -y
ceph-deploy new mon01
yum install python-minimal -y
ceph-deploy install mon01 node01 node02
MDS=”mon01″
MON=”mon01 node01 node02″
OSDS=”mon01 node01 node02″
INST=”$OSDS $MON”
echo “osd pool default size = 2
osd max object name len = 256
osd max object namespace len = 64
mon_pg_warn_max_per_osd = 2000
mon clock drift allowed = 30
mon clock drift warn backoff = 30
rbd cache writethrough until flush = false” >> ceph.conf
apt-get install -y ceph-base
apt-get install -y ceph-common
apt-get install -y ceph-fs-common
apt-get install -y ceph-fuse
apt-get install -y ceph-mds
apt-get install -y ceph-mon
apt-get install -y ceph-osd
[Ceph]
name=Ceph packages for $basearch
baseurl=http://mirrors.163.com/ceph/rpm-nautilus/el7/$basearch
enabled=1
priority=1
gpgcheck=1
gpgkey=https://download.ceph.com/keys/release.asc
[Ceph-noarch]
name=Ceph noarch packages
baseurl=http://mirrors.163.com/ceph/rpm-nautilus/el7/noarch
enabled=1
priority=1
gpgcheck=1
gpgkey=https://download.ceph.com/keys/release.asc
[ceph-source]
name=Ceph source packages
baseurl=http://mirrors.163.com/ceph/rpm-nautilus/el7/SRPMS
enabled=0
priority=1
gpgcheck=1
gpgkey=https://download.ceph.com/keys/release.asc
yum install python-setuptools
yum install -y deltarpm
yum install -y gdisk
ceph mgr module disable dashboard
ceph-deploy mgr create mon01 node01 node02
ceph dashboard ac-user-create admin passw0rd administrator
systemctl restart ceph-mon.target
ceph-deploy –overwrite-conf mds create mon01 node01 node02 创建mds
ceph osd pool create cephfs_data 128
ceph osd pool create cephfs_metadata 128
ceph fs new myfs cephfs_metadata cephfs_data
ceph osd pool rm cephfs_data cephfs_data –yes-i-really-really-mean-it 删除cephfs_data
ceph fs rm myfs –yes-i-really-mean-it 删除myfs
mount -t ceph 192.168.169.190:6789:/ /fsdata -o name=admin,secretfile=/etc/ceph/admin.secret
##ceph添加新节点
ceph-deploy –overwrite-conf config push admin mon01 node01 node02 node03
ceph-deploy –overwrite-conf mon create node03
ceph-deploy –overwrite-conf mon add node03
ceph-deploy osd create –data /dev/sdb node03
#######rbd链接方式
ceph osd pool create rbd_test 128 128
rbd create rbd_date –size 20480 -p rbd_test
rbd –image rbd_date -p rbd_test info
rbd feature disable rbd_test/rbd_date object-map fast-diff deep-flatten
rbd map rbd_date -p rbd_test
rbd showmapped
ceph osd pool application enable rbd_test rbd_date
mkfs.xfs /dev/rbd0
mkdir /rbddate
mount /dev/rbd0 /rbddate/
dd if=/dev/zero of=/rbddate/10G bs=1M count=10240
#cloudstack挂载rbd存储
ceph auth get-or-create client.cloudstack mon ‘allow r’ osd ‘allow rwx pool=vm-data’
AQD+VQVfELMbJRAA5LspVxtCykwJ3LFzwYLyFQ==
####删除RBD
rbd list -p rbd_test
rbd unmap /dev/rbd0
rbd rm rbd_date -p rbd_test
rbd list -p rbd_test 查看镜像
rbd snap ls rbd_test/dfe36912-ba7f-11ea-a837-000c297bc10e 查看镜像的快照
rbd snap unprotect rbd_test/dfe36912-ba7f-11ea-a837-000c297bc10e@cloudstack-base-snap 解除快照保护
rbd snap purge rbd_test/ede76ccf-f86a-4ab7-afa7-1adc4f1b576b 删除快照
rbd rm rbd_test/ede76ccf-f86a-4ab7-afa7-1adc4f1b576b 删除镜像
rbd children vm-data/2368966f-0ea3-11eb-8538-3448edf6aa08@cloudstack-base-snap 查看子快照
rbd flatten vm-data/79900df4-0b18-42cb-854b-c29778f02aff 还原子快照
问题：This means the image is still open or the client using it crashed. Try again after closing/unmapping it or waiting 30s for the crashed client to timeout.
解决：
rbd status vm-data/6926af02-27c3-47ad-a7ee-86c7d95aa353 查看戳号
ceph osd blacklist add 172.31.156.11:0/4126702798
查看rbd 残留的watch信息
[root@node-2 ~]# rbd status compute/2d05517a-8670-4cce-b39d-709e055381d6_disk Watchers: watcher=192.168.55.2:0/2900899764 client.14844 cookie=139644428642944
将该残留的watch信息添加到osd的黑名单，再查看watch是否存在。
[root@node-2 ~]# ceph osd blacklist add 192.168.55.2:0/2900899764 blacklisting 192.168.55.2:0/2900899764 until 2018-06-11 14:25:31.027420 (3600 sec) [root@node-2 ~]# rbd status compute/2d05517a-8670-4cce-b39d-709e055381d6_disk Watchers: none
删除rbd
[root@node-2 ~]# rbd rm compute/2d05517a-8670-4cce-b39d-709e055381d6_disk Removing image: 100% complete…done.
