ceph对接openstack环境
一、使用RBD方式提供存储，如下数据：
1、image：保存glance中的image
2、volume存储：保存cinder的volume；保存创建虚拟机时选择创建新卷
3、vms的存储：保存创建虚拟机时不选择创建新卷
二、实施步骤
1、客户端也要有cent用户
useradd cent && echo "123" | passwd --stdin cent echo -e 'Defaults:cent !requiretty cent ALL = (root) NOPASSWD:ALL' | tee /etc/sudoers.d/ceph chmod 440 /etc/sudoers.d/ceph
2、openstack要用ceph的节点（比如compute-node和storage-node）安装下载的软件包：
yum localinstall ./* -y
或者：每个节点安装 clients（要访问ceph集群的节点）：
yum install python-rbd yum install ceph-common 如果先采用上面的方式安装客户端，其实这两个包在rpm包中早已经安装过了
3、部署节点上执行，为openstack节点安装ceph：
ceph-deploy install controller ceph-deploy admin controller
4、客户端执行
sudo chmod 644 /etc/ceph/ceph.client.admin.keyring
5、create pools，只需在一个ceph节点上操作即可：
ceph osd pool create images 1024 ceph osd pool create vms 1024 ceph osd pool create volumes 1024
显示pool的状态
ceph osd lspools
6、在ceph集群中，创建glance和cinder用户， 只需在一个ceph节点上操作即可：
ceph auth get-or-create client.glance mon 'allow r' osd 'allow class-read object_prefix rbd_children, allow rwx pool=images' 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' nova使用cinder用户，就不单独创建了
7、拷贝ceph-ring， 只需在一个ceph节点上操作即可：
ceph auth get-or-create client.glance > /etc/ceph/ceph.client.glance.keyring ceph auth get-or-create client.cinder > /etc/ceph/ceph.client.cinder.keyring
使用scp拷贝到其他节点（ceph集群节点和openstack的要用ceph的节点比如compute-node和storage-node，本次对接的是一个all-in-one的环境，所以copy到controller节点即可 ）
[root@yunwei ceph]# ls ceph.client.admin.keyring ceph.client.cinder.keyring ceph.client.glance.keyring ceph.conf rbdmap tmpR3uL7W [root@yunwei ceph]# [root@yunwei ceph]# scp ceph.client.glance.keyring ceph.client.cinder.keyring controller:/etc/ceph/
8、更改文件的权限(所有客户端节点均执行)
chown glance:glance /etc/ceph/ceph.client.glance.keyring chown cinder:cinder /etc/ceph/ceph.client.cinder.keyring
9、更改libvirt权限（只需在nova-compute节点上操作即可，每个计算节点都做）
uuidgen
940f0485-e206-4b49-b878-dcd0cb9c70a4
在/etc/ceph/目录下（在什么目录没有影响，放到/etc/ceph目录方便管理）：
cat > secret.xml <<EOF <secret ephemeral='no' private='no'> <uuid>940f0485-e206-4b49-b878-dcd0cb9c70a4</uuid> <usage type='ceph'> <name>client.cinder secret</name> </usage> </secret> EOF
将 secret.xml 拷贝到所有compute节点，并执行：：
virsh secret-define --file secret.xml
ceph auth get-key client.cinder > ./client.cinder.key
virsh secret-set-value --secret 940f0485-e206-4b49-b878-dcd0cb9c70a4 --base64 $(cat ./client.cinder.key)
最后所有compute节点的client.cinder.key和secret.xml都是一样的， 记下之前生成的uuid：940f0485-e206-4b49-b878-dcd0cb9c70a4
如遇到如下错误：
[root@controller ceph]# virsh secret-define --file secret.xml 错误：使用 secret.xml 设定属性失败 错误：internal error: 已将 UUID 为d448a6ee-60f3-42a3-b6fa-6ec69cab2378 的 secret 定义为与 client.cinder secret 一同使用 [root@controller ~]# virsh secret-list UUID 用量 -------------------------------------------------------------------------------- d448a6ee-60f3-42a3-b6fa-6ec69cab2378 ceph client.cinder secret [root@controller ~]# virsh secret-undefine d448a6ee-60f3-42a3-b6fa-6ec69cab2378 已删除 secret d448a6ee-60f3-42a3-b6fa-6ec69cab2378 [root@controller ~]# virsh secret-list UUID 用量 -------------------------------------------------------------------------------- [root@controller ceph]# virsh secret-define --file secret.xml 生成 secret 940f0485-e206-4b49-b878-dcd0cb9c70a4 [root@controller ~]# virsh secret-list UUID 用量 -------------------------------------------------------------------------------- 940f0485-e206-4b49-b878-dcd0cb9c70a4 ceph client.cinder secret virsh secret-set-value --secret 940f0485-e206-4b49-b878-dcd0cb9c70a4 --base64 $(cat ./client.cinder.key)
10、配置Glance， 在所有的controller节点上做如下更改：
vim /etc/glance/glance-api.conf
[DEFAULT] default_store = rbd [cors] [cors.subdomain] [database] connection = mysql+pymysql://glance:GLANCE_DBPASS@controller/glance [glance_store] stores = rbd default_store = rbd rbd_store_pool = images rbd_store_user = glance rbd_store_ceph_conf = /etc/ceph/ceph.conf rbd_store_chunk_size = 8 [image_format] [keystone_authtoken] auth_uri = http://controller:5000 auth_url = http://controller:35357 memcached_servers = controller:11211 auth_type = password project_domain_name = default user_domain_name = default project_name = service username = glance password = glance [matchmaker_redis] [oslo_concurrency] [oslo_messaging_amqp] [oslo_messaging_kafka] [oslo_messaging_notifications] [oslo_messaging_rabbit] [oslo_messaging_zmq] [oslo_middleware] [oslo_policy] [paste_deploy] flavor = keystone [profiler] [store_type_location_strategy] [task] [taskflow_executor]
在所有的controller节点上做如下更改：
systemctl restart openstack-glance-api.service systemctl status openstack-glance-api.service
·创建image验证：
[root@controller ~]# openstack image create "cirros" --file cirros-0.3.3-x86_64-disk.img.img --disk-format qcow2 --container-format bare --public [root@controller ~]# rbd ls images 9ce5055e-4217-44b4-a237-e7b577a20dac **********有输出镜像说明成功了
11、配置 Cinder：
vim /etc/cinder/cinder.conf
[DEFAULT] my_ip = 192.168.11.3 glance_api_servers = http://controller:9292 auth_strategy = keystone enabled_backends = lvm,ceph state_path = /var/lib/cinder transport_url = rabbit://openstack:admin@controller [backend] [barbican] [brcd_fabric_example] [cisco_fabric_example] [coordination] [cors] [cors.subdomain] [database] connection = mysql+pymysql://cinder:CINDER_DBPASS@controller/cinder [fc-zone-manager] [healthcheck] [key_manager] [keystone_authtoken] auth_uri = http://controller:5000 auth_url = http://controller:35357 memcached_servers = controller:11211 auth_type = password project_domain_name = default user_domain_name = default project_name = service username = cinder password = cinder [matchmaker_redis] [oslo_concurrency] lock_path = /var/lib/cinder/tmp [oslo_messaging_amqp] [oslo_messaging_kafka] [oslo_messaging_notifications] [oslo_messaging_rabbit] [oslo_messaging_zmq] [oslo_middleware] [oslo_policy] [oslo_reports] [oslo_versionedobjects] [profiler] [ssl] [lvm] volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver volume_group = cinder-vg volumes_dir = $state_path/volumes iscsi_protocol = iscsi iscsi_helper = lioadm iscsi_ip_address = 192.168.11.5 [ceph] volume_driver = cinder.volume.drivers.rbd.RBDDriver rbd_pool = volumes rbd_ceph_conf = /etc/ceph/ceph.conf rbd_flatten_volume_from_snapshot = false rbd_max_clone_depth = 5 rbd_store_chunk_size = 4 rados_connect_timeout = -1 glance_api_version = 2 rbd_user = cinder rbd_secret_uuid = 940f0485-e206-4b49-b878-dcd0cb9c70a4 volume_backend_name=ceph
重启cinder服务：
systemctl restart openstack-cinder-api.service openstack-cinder-scheduler.service openstack-cinder-volume.service systemctl status openstack-cinder-api.service openstack-cinder-scheduler.service openstack-cinder-volume.service
创建volume验证：
[root@controller gfs]# rbd ls volumes volume-43b7c31d-a773-4604-8e4a-9ed78ec18996
12、配置Nova：
vim /etc/nova/nova.conf
[DEFAULT] my_ip=172.16.254.63 use_neutron = True firewall_driver = nova.virt.firewall.NoopFirewallDriver enabled_apis=osapi_compute,metadata transport_url = rabbit://openstack:admin@controller [api] auth_strategy = keystone [api_database] connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova_api [barbican] [cache] [cells] [cinder] os_region_name = RegionOne [cloudpipe] [conductor] [console] [consoleauth] [cors] [cors.subdomain] [crypto] [database] connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova [ephemeral_storage_encryption] [filter_scheduler] [glance] api_servers = http://controller:9292 [guestfs] [healthcheck] [hyperv] [image_file_url] [ironic] [key_manager] [keystone_authtoken] auth_uri = http://controller:5000 auth_url = http://controller:35357 memcached_servers = controller:11211 auth_type = password project_domain_name = default user_domain_name = default project_name = service username = nova password = nova [libvirt] virt_type=qemu images_type = rbd images_rbd_pool = vms images_rbd_ceph_conf = /etc/ceph/ceph.conf rbd_user = cinder rbd_secret_uuid = 940f0485-e206-4b49-b878-dcd0cb9c70a4 [matchmaker_redis] [metrics] [mks] [neutron] url = http://controller:9696 auth_url = http://controller:35357 auth_type = password project_domain_name = default user_domain_name = default region_name = RegionOne project_name = service username = neutron password = neutron service_metadata_proxy = true metadata_proxy_shared_secret = METADATA_SECRET [notifications] [osapi_v21] [oslo_concurrency] lock_path=/var/lib/nova/tmp [oslo_messaging_amqp] [oslo_messaging_kafka] [oslo_messaging_notifications] [oslo_messaging_rabbit] [oslo_messaging_zmq] [oslo_middleware] [oslo_policy] [pci] [placement] os_region_name = RegionOne auth_type = password auth_url = http://controller:35357/v3 project_name = service project_domain_name = Default username = placement password = placement user_domain_name = Default [quota] [rdp] [remote_debug] [scheduler] [serial_console] [service_user] [spice] [ssl] [trusted_computing] [upgrade_levels] [vendordata_dynamic_auth] [vmware] [vnc] enabled=true vncserver_listen=$my_ip vncserver_proxyclient_address=$my_ip novncproxy_base_url = http://172.16.254.63:6080/vnc_auto.html [workarounds] [wsgi] [xenserver] [xvp]
重启nova服务：
systemctl restart openstack-nova-api.service openstack-nova-consoleauth.service openstack-nova-scheduler.service openstack-nova-compute.service openstack-nova-cert.service systemctl status openstack-nova-api.service openstack-nova-consoleauth.service openstack-nova-scheduler.service openstack-nova-compute.service openstack-nova-cert.service
创建虚机验证：
