12 Openstack-Ussuri-Cinder计算节点部署-centos8

cinder具体功能如下：
1 提供 REST API 使用户能够查询和管理 volume、volume snapshot 以及 volume type
2 提供 scheduler 调度 volume 创建请求，合理优化存储资源的分配
3 通过 driver 架构支持多种 back-end（后端）存储方式，包括 LVM，NFS，Ceph 和其他诸如 EMC、IBM 等商业存储产品和方案

12.1 创建cinder节点使用的lvm磁盘 - ALL Compute

#安装支持软件包

yum install lvm2 device-mapper-persistent-data -y

#创建lvm物理卷 - 前提是compute节点有一块未使用磁盘，也可以直接使用单盘，直接从12.2开始

pvcreate /dev/vdb

#输出

Physical volume "/dev/vdb" successfully created.

#创建lvm物理卷组

vgcreate cinder-volumes /dev/vdb

#输出

Volume group "cinder-volumes" successfully created

#配置设备过滤，将硬盘过滤出来

12.2 部署与配置cinder计算节点

#安装支持软件包

yum install openstack-cinder targetcli python3-keystone -y

#备份cinder配置

cp /etc/cinder/cinder.conf /etc/cinder/cinder.conf.bak
egrep -v "^$|^#" /etc/cinder/cinder.conf.bak >/etc/cinder/cinder.conf

#配置cinder配置文件，在对应项底下增加以下字段
#vim /etc/cinder/cinder.conf

[DEFAULT]
# ...
my_ip = 172.16.1.163
transport_url = rabbit://rabbitmq:rabbitmq.123@controller160:5672,rabbitmq:rabbitmq.123@controller161:5672,rabbitmq:rabbitmq.123@controller162:5672
enabled_backends = lvm
glance_api_servers = http://controller168:9292
auth_strategy = keystone
[database]
# ...
connection = mysql+pymysql://cinder:cinder.123@controller168/cinder

[keystone_authtoken]
# ...
www_authenticate_uri = http://controller168:5000
auth_url = http://controller168:5000
memcached_servers = controller160:11211,controller161:11211,controller162:11211
auth_type = password
project_domain_name = Default
user_domain_name = Default
project_name = service
username = cinder
password = cinder.123

[lvm]
# ...
volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
volume_group = cinder-volumes
target_protocol = iscsi
target_helper = lioadm

[oslo_concurrency]
# ...
lock_path = /var/lib/cinder/tmp

#重启cinder-volume服务，并配置开机启动:

systemctl enable openstack-cinder-volume.service target.service
systemctl restart openstack-cinder-volume.service target.service
systemctl status openstack-cinder-volume.service target.service

12.3 cinder服务验证 #加载管理凭证

source adminrc.sh

#执行状态检查，都为up为正常

openstack volume service list

#输出

[root@controller160 ~]# openstack volume service list
+------------------+----------------+------+---------+-------+----------------------------+
| Binary           | Host           | Zone | Status  | State | Updated At                 |
+------------------+----------------+------+---------+-------+----------------------------+
| cinder-scheduler | controller160  | nova | enabled | up    | 2020-06-23T16:53:16.000000 |
| cinder-scheduler | controller162  | nova | enabled | up    | 2020-06-23T16:53:13.000000 |
| cinder-scheduler | controller161  | nova | enabled | up    | 2020-06-23T16:53:19.000000 |
| cinder-volume    | compute163@lvm | nova | enabled | up    | 2020-06-23T16:53:17.000000 |
| cinder-volume    | compute164@lvm | nova | enabled | up    | 2020-06-23T16:53:08.000000 |
+------------------+----------------+------+---------+-------+----------------------------+

#dashboard能够正常创建卷

#后台compute节点查看

[root@compute164 ~]# lsblk
NAME                                                                   MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0                                                                     11:0    1   4M  0 rom
vda                                                                    253:0    0  15G  0 disk
└─vda1                                                                 253:1    0  15G  0 part /
vdb                                                                    253:16   0  20G  0 disk
├─cinder--volumes-cinder--volumes--pool_tmeta                          252:0    0  20M  0 lvm
│ └─cinder--volumes-cinder--volumes--pool-tpool                        252:2    0  19G  0 lvm
│   ├─cinder--volumes-cinder--volumes--pool                            252:3    0  19G  0 lvm
│   └─cinder--volumes-volume--9575c54a--d44e--46dd--9187--0c464c512c01 252:4    0   2G  0 lvm
└─cinder--volumes-cinder--volumes--pool_tdata                          252:1    0  19G  0 lvm
  └─cinder--volumes-cinder--volumes--pool-tpool                        252:2    0  19G  0 lvm
    ├─cinder--volumes-cinder--volumes--pool                            252:3    0  19G  0 lvm
    └─cinder--volumes-volume--9575c54a--d44e--46dd--9187--0c464c512c01 252:4    0   2G  0 lvm

至此，cinder服务已部署完毕，如有问题请联系我改正，感激不尽！

12.x 部署过程遇到的问题汇总

eg1.执行状态检查时发现报错
root@controller160:~#  openstack volume service list
The server is currently unavailable. Please try again at a later time.<br /><br />
The Keystone service is temporarily unavailable.
但是执行其他命令是正常的，因此判断非keystone问题，回顾下安装步骤
root@controller160:~# openstack service list
+----------------------------------+-----------+-----------+
| ID                               | Name      | Type      |
+----------------------------------+-----------+-----------+
| 0d9cdd8f207147bf93b573203c8e78a3 | placement | placement |
| 0e20d3c0a35e486bb2aed2bf3cc17c00 | neutron   | network   |
| 6ad962f2c8834b1cbaac24c5c952bbe7 | glance    | image     |
| 99b513bed6da45ae814b3d99a10e87e5 | keystone  | identity  |
| bf7d430353f84346b27d26a3117a52e7 | cinderv3  | volumev3  |
| f1173afb33a741ddb3a6540b3a8e70f6 | cinderv2  | volumev2  |
| fc0fb7e04b4443cd95be23d91bd0fc51 | nova      | compute   |
+----------------------------------+-----------+-----------+

 (HTTP 503)
解决方案：重新授权cinder进admin
root@controller160:~# openstack role add --project service --user cinder admin
root@controller160:~# openstack volume service list
+------------------+----------------+------+---------+-------+----------------------------+
| Binary           | Host           | Zone | Status  | State | Updated At                 |
+------------------+----------------+------+---------+-------+----------------------------+
| cinder-scheduler | controller160  | nova | enabled | up    | 2020-05-22T07:10:29.000000 |
| cinder-volume    | compute162@lvm | nova | enabled | up    | 2020-05-22T07:10:28.000000 |
+------------------+----------------+------+---------+-------+----------------------------+