如何安装Ceph并对接OpenStack

安装Ceph

准备工作：

• 关闭SELinux

sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
setenforce 0

• 打开Ceph端口

# firewall-cmd --zone=public --add-port=6789/tcp --permanent
# firewall-cmd --zone=public --add-port=6800-7100/tcp --permanent
# firewall-cmd --reload

• 安装epel源

# yum -y install epel-relea

• 安装 ntp 同步时间

# yum -y install ntp ntpdate ntp-doc
# ntpdate 0.us.pool.ntp.org
# hwclock --systohc
# systemctl enable ntpd.service
# systemctl start ntpd.service

安装Ceph

安装Ceph源

# rpm -Uvh http://ceph.com/rpm-hammer/el7/noarch/ceph-release-1-1.el7.noarch.rpm
# yum update -y

安装ceph-deploy工具

# yum install ceph-deploy -y

创建安装Ceph的工作目录

# mkdir ~/ceph-installation

创建Monitor节点

#ceph-deploy new mon1 mon2 mon3

为每个节点安装Ceph包（包含Monitor节点与OSD节点）

# ceph-deploy install mon1 mon2 mon3 osd1

初始化Monitor节点

# ceph-deploy mon create-initial

安装一个OSD

• 分区：

parted /dev/sdb
mklabel gpt
mkpart primary 0% 50GB
mkpart primary xfs 50GB 100%

• 格式化数据分区

mkfs.xfs /dev/sdb2

• 创建OSD

ceph-deploy osd create osd1:/dev/sdb2:/dev/sdb1

• 激活OSD

ceph-deploy osd activate osd1:/dev/sdb2:/dev/sdb1

同时创建多个

ceph-deploy osd create controller2:/dev/sdb2:/dev/sdb1 controller2:/dev/sdd2:/dev/sdd1 controller2:/dev/sde2:/dev/sde1

ceph-deploy osd activate controller2:/dev/sdb2:/dev/sdb1 controller2:/dev/sdd2:/dev/sdd1 controller2:/dev/sde2:/dev/sde1

注意点：

• 步骤1-6只需要在一台机器上,即安装节点上做

• 只有这两步必须在各个节点做

格式化数据分区
mkfs.xfs /dev/sdb2

创建OSD
ceph-deploy osd create osd1:/dev/sdb2:/dev/sdb1

• 机械硬盘

  第一个盘的第一个分区给日志分区

• SSD

  SSD的多个分区给多个osd做log存储

基本配置与检查

[root@controller3 ceph]# ceph health

[root@controller3 ceph]# ceph -w

[root@controller2 ~(keystone_admin)]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda               8:0    0  2.7T  0 disk 
├─sda1            8:1    0    1M  0 part 
├─sda2            8:2    0  500M  0 part /boot
└─sda3            8:3    0  2.7T  0 part 
  ├─centos-swap 253:0    0  7.9G  0 lvm  [SWAP]
  ├─centos-root 253:1    0   50G  0 lvm  /
  └─centos-home 253:2    0  2.7T  0 lvm  /home
sdb               8:16   0  2.7T  0 disk 
sdd               8:48   0  2.7T  0 disk 
sde               8:64   0  2.7T  0 disk 
loop0             7:0    0    2G  0 loop /srv/node/swiftloopback
loop2             7:2    0 20.6G  0 loop

[root@controller2 ~(keystone_admin)]# parted /dev/sdb
GNU Parted 3.1
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel gpt                                                      
(parted) mkpart primary 0% 50GB                                           
(parted) mkpart primary xfs 50GB 100%                                     
(parted) p                                                                
Model: ATA HGST HUS724030AL (scsi)
Disk /dev/sdb: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name     Flags
 1      1049kB  50.0GB  50.0GB               primary
 2      50.0GB  3001GB  2951GB               primary

(parted)   

[root@controller3 ceph]# ceph osd df
ID WEIGHT  REWEIGHT SIZE   USE    AVAIL  %USE VAR  
 0 2.67999  1.00000  2746G 37096k  2746G 0.00 1.03 
 7 2.67999  1.00000  2746G 35776k  2746G 0.00 0.99 
 8 2.67999  1.00000  2746G 35256k  2746G 0.00 0.98 
 1 2.67999  1.00000  2746G 36800k  2746G 0.00 1.02 
 5 2.67999  1.00000  2746G 35568k  2746G 0.00 0.99 
 6 2.67999  1.00000  2746G 35572k  2746G 0.00 0.99 
 2 2.67999  1.00000  2746G 36048k  2746G 0.00 1.00 
 3 2.67999  1.00000  2746G 36128k  2746G 0.00 1.00 
 4 2.67999  1.00000  2746G 35664k  2746G 0.00 0.99 
              TOTAL 24719G   316M 24719G 0.00      
MIN/MAX VAR: 0.98/1.03  STDDEV: 0

[root@controller3 ceph]# ceph osd pool  get rbd size


[root@controller3 ceph]# ceph osd pool set rbd pg_num 256
set pool 0 pg_num to 256
[root@controller3 ceph]# ceph osd pool set rbd pgp_num 256
Error EBUSY: currently creating pgs, wait
[root@controller3 ceph]# ceph osd pool set rbd pgp_num 256
set pool 0 pgp_num to 256

[root@controller3 ceph]# ceph osd tree
ID WEIGHT   TYPE NAME            UP/DOWN REWEIGHT PRIMARY-AFFINITY 
-1 24.11993 root default                                           
-2  8.03998     host controller3                                   
 0  2.67999         osd.0             up  1.00000          1.00000 
 7  2.67999         osd.7             up  1.00000          1.00000 
 8  2.67999         osd.8             up  1.00000          1.00000 
-3  8.03998     host controller1                                   
 1  2.67999         osd.1             up  1.00000          1.00000 
 5  2.67999         osd.5             up  1.00000          1.00000 
 6  2.67999         osd.6             up  1.00000          1.00000 
-4  8.03998     host controller2                                   
 2  2.67999         osd.2             up  1.00000          1.00000 
 3  2.67999         osd.3             up  1.00000          1.00000 
 4  2.67999         osd.4             up  1.00000          1.00000 

[root@controller3 ceph]# ceph df
GLOBAL:
    SIZE       AVAIL      RAW USED     %RAW USED 
    24719G     24719G         307M             0 
POOLS:
    NAME     ID     USED     %USED     MAX AVAIL     OBJECTS 
    rbd      0         0         0         8239G           0 

写下去Ceph对接OpenStack

环境：3台Controller的硬盘作为ceph存储，每台Controller上有3块硬盘，其余为Compute节点

install clients

每个节点安装（要访问ceph集群的节点）

sudo yum install python-rbd 
sudo yum install ceph-common

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

ceph -w
3328 pgs: 3328 active+clean

创建用户

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

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

[root@controller1 ceph]# ls
ceph.client.admin.keyring   ceph.conf  tmpOZNQbH
ceph.client.cinder.keyring  rbdmap     tmpPbf5oV
ceph.client.glance.keyring  tmpJSCMCV  tmpUKxBQB

权限

更改文件的权限(所有客户端节点均执行)

sudo chown glance:glance /etc/ceph/ceph.client.glance.keyring
sudo chown cinder:cinder /etc/ceph/ceph.client.cinder.keyring

更改libvirt权限（只需在nova-compute节点上操作即可）

uuidgen
生成uuid

cat > secret.xml <<EOF
<secret ephemeral='no' private='no'>
  <uuid>457eb676-33da-42ec-9a8c-9293d545c337</uuid>
  <usage type='ceph'>
    <name>client.cinder secret</name>
  </usage>
</secret>
EOF

拷贝到所有compute节点

sudo virsh secret-define --file secret.xml
生成key
ceph auth get-key client.cinder > ./client.cinder.key
sudo virsh secret-set-value --secret adc522c4-237c-4cb8-8e39-682adcf4a830 --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

adc522c4-237c-4cb8-8e39-682adcf4a830

配置Glance

在所有的controller节点上做如下更改

etc/glance/glance-api.conf


[DEFAULT]
default_store = rbd
show_image_direct_url=False
bind_host=controller1
bind_port=9292
workers=24
backlog=4096
image_cache_dir=/var/lib/glance/image-cache
registry_host=controller1
registry_port=9191
registry_client_protocol=http
debug=False
verbose=True
log_file=/var/log/glance/api.log
log_dir=/var/log/glance
use_syslog=False
syslog_log_facility=LOG_USER
use_stderr=True
[database]
connection=mysql+pymysql://glance:a9717e6e21384389@controller:3305/glance
idle_timeout=3600
[glance_store]
os_region_name=RegionOne
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/v2.0
identity_uri=http://controller:35357
admin_user=glance
admin_password=79c14ca2ba51415b
admin_tenant_name=services
[matchmaker_redis]
[matchmaker_ring]
[oslo_concurrency]
[oslo_messaging_amqp]
[oslo_messaging_qpid]
[oslo_messaging_rabbit]
rabbit_host=controller1,controller2,controller3
rabbit_hosts=controller1:5672,controller2:5672,controller3:5672
[oslo_policy]
[paste_deploy]
flavor=keystone
[store_type_location_strategy]
[task]
[taskflow_executor]

验证Glance

在所有的controller节点上做如下更改

重启服务

openstack-service restart glance

查看状态

[root@controller1 ~]# openstack-service status glance
MainPID=23178 Id=openstack-glance-api.service ActiveState=active
MainPID=23155 Id=openstack-glance-registry.service ActiveState=active

[root@controller1 ~]# netstat -plunt | grep 9292
tcp        0      0 192.168.53.58:9292      0.0.0.0:*               LISTEN      23178/python2
tcp        0      0 192.168.53.23:9292      0.0.0.0:*               LISTEN      11435/haproxy

上传一个镜像

[root@controller1 ~]# rbd ls images
ac5c334f-fbc2-4c56-bf48-47912693b692

这样就说明成功了

配置 Cinder

/etc/cinder/cinder.conf

[DEFAULT]
enabled_backends = ceph
glance_host = controller
enable_v1_api = True
enable_v2_api = True
host = controller1
storage_availability_zone = nova
default_availability_zone = nova
auth_strategy = keystone
#enabled_backends = lvm
osapi_volume_listen = controller1
osapi_volume_workers = 24
nova_catalog_info = compute:nova:publicURL
nova_catalog_admin_info = compute:nova:adminURL
debug = False
verbose = True
log_dir = /var/log/cinder
notification_driver =messagingv2
rpc_backend = rabbit
control_exchange = openstack
api_paste_config=/etc/cinder/api-paste.ini
[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 = adc522c4-237c-4cb8-8e39-682adcf4a830
volume_backend_name=ceph
[BRCD_FABRIC_EXAMPLE]
[CISCO_FABRIC_EXAMPLE]
[cors]
[cors.subdomain]
[database]
connection = mysql+pymysql://cinder:02d2f2f82467400d@controller:3305/cinder
[fc-zone-manager]
[keymgr]
[keystone_authtoken]
auth_uri = http://controller:5000
identity_uri = http://controller:35357
admin_user = cinder
admin_password = 7281b7bf47044f96
admin_tenant_name = services
memcache_servers = 127.0.0.1:11211  
token_cache_time = 3600
cache = true  
[matchmaker_redis]
[matchmaker_ring]
[oslo_concurrency]
[oslo_messaging_amqp]
[oslo_messaging_qpid]
[oslo_messaging_rabbit]
amqp_durable_queues = False
kombu_ssl_keyfile =
kombu_ssl_certfile =
kombu_ssl_ca_certs =
rabbit_host = controller1,controller2,controller3
rabbit_port = 5672
rabbit_hosts = controller1:5672,controller2:5672,controller3:5672
rabbit_use_ssl = False
rabbit_userid = guest
rabbit_password = guest
rabbit_virtual_host = /
rabbit_ha_queues = False
heartbeat_timeout_threshold = 0
heartbeat_rate = 2
[oslo_middleware]
[oslo_policy]
[oslo_reports]
[profiler]
[lvm]
iscsi_helper=lioadm
volume_group=cinder-volumes
iscsi_ip_address=192.168.56.251
volume_driver=cinder.volume.drivers.lvm.LVMVolumeDriver
volumes_dir=/var/lib/cinder/volumes
iscsi_protocol=iscsi
volume_backend_name=lvm

注意：ceph段在文本中要重新创建

验证Cinder

openstack-service restart cinder
创建一个云硬盘
[root@controller1 ~]# rbd ls volumes
volume-463c3495-1747-480f-974f-51ac6e1c5612

这样就成功了

配置Nova

/etc/nova/nova.conf


[DEFAULT]
internal_service_availability_zone=internal
default_availability_zone=nova
use_ipv6=False
notify_api_faults=False
state_path=/var/lib/nova
report_interval=10
compute_manager=nova.compute.manager.ComputeManager
service_down_time=60
rootwrap_config=/etc/nova/rootwrap.conf
volume_api_class=nova.volume.cinder.API
auth_strategy=keystone
allow_resize_to_same_host=False
heal_instance_info_cache_interval=60
reserved_host_memory_mb=512
network_api_class=nova.network.neutronv2.api.API
force_snat_range =0.0.0.0/0
metadata_host=192.168.56.200
dhcp_domain=novalocal
security_group_api=neutron
compute_driver=libvirt.LibvirtDriver
vif_plugging_is_fatal=True
vif_plugging_timeout=300
firewall_driver=nova.virt.firewall.NoopFirewallDriver
force_raw_images=True
debug=False
verbose=True
log_dir=/var/log/nova
use_syslog=False
syslog_log_facility=LOG_USER
use_stderr=True
notification_topics=notifications
rpc_backend=rabbit
vncserver_proxyclient_address=compute1
vnc_keymap=en-us
sql_connection=mysql+pymysql://nova:8a5033019dcf46c7@192.168.56.200/nova
vnc_enabled=True
image_service=nova.image.glance.GlanceImageService
lock_path=/var/lib/nova/tmp
vncserver_listen=0.0.0.0
novncproxy_base_url=http://192.168.56.200:6080/vnc_auto.html
[api_database]
[barbican]
[cells]
[cinder]
catalog_info=volumev2:cinderv2:publicURL
[conductor]
[cors]
[cors.subdomain]
[database]
[ephemeral_storage_encryption]
[glance]
api_servers=192.168.56.200:9292
[guestfs]
[hyperv]
[image_file_url]
[ironic]
[keymgr]
[keystone_authtoken]
[libvirt]
images_type = rbd
images_rbd_pool = vms
images_rbd_ceph_conf = /etc/ceph/ceph.conf
rbd_user = cinder
rbd_secret_uuid = 5b059071-1aff-4b72-bc5f-0122a7d6c1df
disk_cachemodes="network=writeback"
inject_password = false
inject_key = false
inject_partition = -2
live_migration_flag="VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE,VIR_MIGRATE_PERSIST_DEST,VIR_MIGRATE_TUNNELLED"
virt_type=kvm
inject_password=False
inject_key=False
inject_partition=-1
live_migration_uri=qemu+tcp://nova@%s/system
cpu_mode=host-model
vif_driver=nova.virt.libvirt.vif.LibvirtGenericVIFDriver
[matchmaker_redis]
[matchmaker_ring]
[metrics]
[neutron]
url=http://192.168.56.200:9696
admin_username=neutron
admin_password=0cccbadebaa14569
admin_tenant_name=services
region_name=RegionOne
admin_auth_url=http://192.168.56.200:5000/v2.0
auth_strategy=keystone
ovs_bridge=br-int
extension_sync_interval=600
timeout=30
default_tenant_id=default
[osapi_v21]
[oslo_concurrency]
[oslo_messaging_amqp]
[oslo_messaging_qpid]
[oslo_messaging_rabbit]
amqp_durable_queues=False
kombu_reconnect_delay=1.0
rabbit_host=controller1,controller2,controller3
rabbit_port=5672
rabbit_hosts=controller1:5672,controller2:5672,controller3:5672
rabbit_use_ssl=False
rabbit_userid=guest
rabbit_password=guest
rabbit_virtual_host=/
rabbit_ha_queues=False
heartbeat_timeout_threshold=0
heartbeat_rate=2
[oslo_middleware]
[rdp]
[serial_console]
[spice]
[ssl]
[trusted_computing]
[upgrade_levels]
[vmware]
[vnc]
[workarounds]
[xenserver]
[zookeeper]

配置Neutron网络

[root@compute1 ~]# ovs-vsctl add-br br-data
[root@compute1 ~]# ovs-vsctl add-port br-data enp7s0f0
[root@compute1 ~]# egrep -v "^$|^#" /etc/neutron/plugins/ml2/openvswitch_agent.ini
[ovs]
integration_bridge = br-int
bridge_mappings =default:br-data
enable_tunneling=False
[agent]
polling_interval = 2
l2_population = False
arp_responder = False
prevent_arp_spoofing = True
enable_distributed_routing = False
extensions =
drop_flows_on_start=False
[securitygroup]
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver

磁盘总量如下，使用了3T*9=27T(ceph3备份)