连接ceph
openstack连接ceph主要是三个组件：glance，cinder，nova
1 使用外接ceph意味着不需要通过kolla去部署ceph，因此需要在全局配置中关闭ceph组件；
vi /etc/kolla/globals.yml
enable_ceph: “no
glance_backend_ceph: "yes"
cinder_backend_ceph: "yes"
nova_backend_ceph: "yes"
2 创建ceph存储池并初始化
ceph osd pool create volumes 128
ceph osd pool create images 128
ceph osd pool create compute 128
#初始化
rbd pool init volumes
rbd pool init images
rbd pool init compute
3 创建ceph用户
创建glance用户及权限
ceph auth get-or-create client.glance mon 'allow r' osd 'allow class-read object_prefix rbd_children, allow rwx pool=images' -o /etc/ceph/ceph.client.glance.keyring
创建cinder用户及权限
ceph auth get-or-create client.cinder mon 'allow r' osd 'allow class-read object_prefix rbd_children, allow rwx pool=volumes, allow rwx pool=vms ,allow rx pool=images' -o /etc/ceph/ceph.client.cinder.keyring
创建nova用户及权限
ceph auth get-or-create client.nova mon 'allow r' osd 'allow class-read object_prefix rbd_children, allow rwx pool=volumes, allow rwx pool=vms ,allow rx pool=images' -o /etc/ceph/ceph.client.nova.keyring
4 配置rbd后端
在/etc/kolla下新建目录如下：
/etc/kolla/config/glance
/etc/kolla/config/cinder
/etc/kolla/config/nova
glance
# 为glance-api.conf配置RBD后端
vi /etc/kolla/config/glance/glance-api.conf
[glance_store]
stores = rbd
default_store = rbd
rbd_store_pool = images
rbd_store_user = glance
rbd_store_ceph_conf = /etc/ceph/ceph.conf
cinder
# 配置cinder-volume.conf
vi /etc/kolla/config/cinder/cinder-volume.conf
[DEFAULT]
enabled_backends = ceph
[ceph]
rbd_ceph_conf = /etc/ceph/ceph.conf
rbd_user = cinder
rbd_pool = volumes
volume_backend_name = ceph
volume_driver = cinder.volume.drivers.rbd.RBDDriver
rbd_secret_uuid = [96c625f8-9179-48fc-80b7-545aac434d10]
glance_api_version = 2
nova
# 配置nova-compute.conf
vi /etc/kolla/config/nova/nova-compute.conf
[libvirt]
images_rbd_pool = vms
images_type = rbd
images_rbd_ceph_conf = /etc/ceph/ceph.conf
rbd_user = nova
rbd_secret_uuid = [96c625f8-9179-48fc-80b7-545aac434d10]
创建nova用户及权限
ceph auth get-or-create client.nova mon 'allow r' osd 'allow class-read object_prefix rbd_children, allow rwx pool=volumes, allow rwx pool=vms ,allow rx pool=images' -o /etc/ceph/ceph.client.nova.keyring
5 拷贝ceph的配置文件
cp /etc/ceph/ceph.conf /etc/kolla/config/glance/
cp /etc/ceph/ceph.conf /etc/kolla/config/cinder/
cp /etc/ceph/ceph.conf /etc/kolla/config/nova/
cp /etc/ceph/ceph.clinet.cinder.keyring /etc/kolla/config/nova/
将cinder的keyring文件拷贝到容器内部
docker cp /etc/ceph/ceph.client.admin.keyring cinder_volume:/etc/ceph/
6 重新执行部署
kolla-ansible -i all-in-one deploy