关于OpenStack的Glance服务使用
壤驷英叡
Glance提供 Image Service服务,功能是管理 Image，让用户能够发现、获取和保存 Image。提供 REST API （request应用接口）让用户能够查询和获取 image 的元数据（描述数据的数据）和 image 本身支持多种方式存储 image，包括普通的文件系统、Swift、Amazon S3 等对 Instance 执行 Snapshot 创建新的 image。
glance只记录镜像有没有，在哪，但是对镜像本身不做管理。当接收到请求之后会分解请求，请求正确且通过keystone认证之后就会到数据库中找到镜像，然后告知用户镜像在哪里，至于用户拿到的镜像能不能使用glance是不管的。
————————————————
版权声明：本文为CSDN博主「鬼刺」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/qq_35550345/article/details/87797386
关于Glance的有关使用
一、使用镜像文件CentOS_7.2_x86_64_XD.qcow2 创建glance镜像名为Centos7.2，格式为qcow2
1、镜像文件存放的地方
[root@controller bin]# ll /opt/iaas/images/
total 1246811
-rw-r--r--. 1 root root 283181056 Nov 2 2017 CentOS_6.5_x86_64_XD.qcow2
-rw-r--r--. 1 root root 400752640 Nov 2 2017 CentOS_7.2_x86_64_XD.qcow2
-rw-r--r--. 1 root root 592800256 Nov 2 2017 MySQL_5.6_XD.qcow2
[root@controller bin]#
2、上传镜像
[root@controller ~]# glance image-create --name "CentOS7.2" --disk-format qcow2 --container-format bare --progress < /opt/iaas/images/CentOS
_7.2_x86_64_XD.qcow2 [=============================>] 100%
+------------------+--------------------------------------+
| Property | Value |
+------------------+--------------------------------------+
| checksum | ea197f4c679b8e1ce34c0aa70ae2a94a |
| container_format | bare |
| created_at | 2018-04-28T11:41:16Z |
| disk_format | qcow2 |
| id | 61dd7bd1-6ee3-4616-bf83-d86a15ce683d |
| min_disk | 0 |
| min_ram | 0 |
| name | CentOS7.2 |
| owner | b9fe13cfc7d6462bbde5e041ef898da4 |
| protected | False |
| size | 400752640 |
| status | active |
| tags | [] |
| updated_at | 2018-04-28T11:41:19Z |
| virtual_size | None |
| visibility | private |
+------------------+--------------------------------------+
二、使用glance相关命令查询glance镜像列表，并查询centos7.2镜像的详细信息
[root@controller bin]# glance image-list
+--------------------------------------+---------+
| ID | Name |
+--------------------------------------+---------+
| 6babbb04-da4b-4197-a34f-7a39026bf1d8 | centos7 |
+--------------------------------------+---------+
[root@controller bin]# glance image-show 6babbb04-da4b-4197-a34f-7a39026bf1d8
+------------------+--------------------------------------+
| Property | Value |
+------------------+--------------------------------------+
| checksum | ea197f4c679b8e1ce34c0aa70ae2a94a |
| container_format | bare |
| created_at | 2019-12-12T02:32:35Z |
| disk_format | qcow2 |
| id | 6babbb04-da4b-4197 -a34f-7a39026bf1d8 |
| min_disk | 0 |
| min_ram | 0 |
| name | centos7 |
| owner | 5cb6243755824171b7e0873b18847545 |
| protected | False |
| size | 400752640 |
| status | active |
| tags | [] |
| updated_at | 2019-12-12T02:32:52Z |
| virtual_size | None |
| visibility | private |
+------------------+--------------------------------------+
三、使用systemctl相关命令，在一条命令中查询glance组件中所有服务状态信息
[root@controller bin]# systemctl status openstack-glance-api,service openstack-glance-registry.service
● openstack-glance-api\x2cservice.service
Loaded: not-found (Reason: No such file or directory)
Active: inactive (dead)
● openstack-glance-registry.service - OpenStack Image Service (code-named Glance) Registry server
Loaded: loaded (/usr/lib/systemd/system/openstack-glance-registry.service; enabled; vendor preset: disabled)
Active: active (running) since Wed 2019-12-11 16:18:09 EST; 1 day 5h ago
Main PID: 19695 (glance-registry)
CGroup: /system.slice/openstack-glance-registry.service
├─19695 /usr/bin/python2 /usr/bin/glance-registry
├─19749 /usr/bin/python2 /usr/bin/glance-registry
├─19750 /usr/bin/python2 /usr/bin/glance-registry
├─19751 /usr/bin/python2 /usr/bin/glance-registry
├─19752 /usr/bin/python2 /usr/bin/glance-registry
├─19753 /usr/bin/python2 /usr/bin/glance-registry
├─19754 /usr/bin/python2 /usr/bin/glance-registry
├─19755 /usr/bin/python2 /usr/bin/glance-registry
├─19756 /usr/bin/python2 /usr/bin/glance-registry
├─19757 /usr/bin/python2 /usr/bin/glance-registry
├─19758 /usr/bin/python2 /usr/bin/glance-registry
├─19759 /usr/bin/python2 /usr/bin/glance-registry
├─19760 /usr/bin/python2 /usr/bin/glance-registry
├─19761 /usr/bin/python2 /usr/bin/glance-registry
├─19762 /usr/bin/python2 /usr/bin/glance-registry
├─19763 /usr/bin/python2 /usr/bin/glance-registry
└─19764 /usr/bin/python2 /usr/bin/glance-registry
Dec 11 20:38:13 controller glance-registry[19695]: /usr/lib/py...
Dec 11 20:38:13 controller glance-registry[19695]: expire_on_c...
Dec 11 20:48:13 controller glance-registry[19695]: /usr/lib/py...
Dec 11 20:48:13 controller glance-registry[19695]: expire_on_c...
Dec 11 21:11:26 controller glance-registry[19695]: /usr/lib/py...
Dec 11 21:11:26 controller glance-registry[19695]: expire_on_c...
Dec 11 21:11:37 controller glance-registry[19695]: /usr/lib/py...
Dec 11 21:11:37 controller glance-registry[19695]: expire_on_c...
Dec 11 21:12:45 controller glance-registry[19695]: /usr/lib/py...
Dec 11 21:12:45 controller glance-registry[19695]: expire_on_c...
Hint: Some lines were ellipsized, use -l to show in full.
[root@controller bin]#
四、帮助
[root@controller bin]# glance help
例如，创建镜像的参数
[root@controller bin]# glance help image-create
usage: glance image-create [--architecture <ARCHITECTURE>]
[--protected [True|False]] [--name <NAME>]
[--instance-uuid <INSTANCE_UUID>]
[--min-disk <MIN_DISK>] [--visibility <VISIBILITY>]
[--kernel-id <KERNEL_ID>]
[--tags <TAGS> [<TAGS> ...]]
[--os-version <OS_VERSION>]
[--disk-format <DISK_FORMAT>]
[--os-distro <OS_DISTRO>] [--id <ID>]
[--owner <OWNER>] [--ramdisk-id <RAMDISK_ID>]
[--min-ram <MIN_RAM>]
[--container-format <CONTAINER_FORMAT>]
[--property <key=value>] [--file <FILE>]
[--progress]
Create a new image.
Optional arguments:
--architecture <ARCHITECTURE>
Operating system architecture as specified in
http://docs.openstack.org/trunk/openstack-
compute/admin/content/adding-images.html
--protected [True|False]
If true, image will not be deletable.
--name <NAME> Descriptive name for the image
--instance-uuid <INSTANCE_UUID>
Metadata which can be used to record which instance
this image is associated with. (Informational only,
does not create an instance snapshot.)
--min-disk <MIN_DISK>
Amount of disk space (in GB) required to boot image.
--visibility <VISIBILITY>
Scope of image accessibility Valid values: public,
private
--kernel-id <KERNEL_ID>
ID of image stored in Glance that should be used as
the kernel when booting an AMI-style image.
--tags <TAGS> [<TAGS> ...]
List of strings related to the image
--os-version <OS_VERSION>
Operating system version as specified by the
distributor
--disk-format <DISK_FORMAT>
Format of the disk Valid values: ami, ari, aki, vhd,
vmdk, raw, qcow2, vdi, iso
--os-distro <OS_DISTRO>
Common name of operating system distribution as
specified in http://docs.openstack.org/trunk
/openstack-compute/admin/content/adding-images.html
--id <ID> An identifier for the image
--owner <OWNER> Owner of the image
--ramdisk-id <RAMDISK_ID>
ID of image stored in Glance that should be used as
the ramdisk when booting an AMI-style image.
--min-ram <MIN_RAM> Amount of ram (in MB) required to boot image.
--container-format <CONTAINER_FORMAT>
Format of the container Valid values: ami, ari, aki,
bare, ovf, ova, docker
--property <key=value>
Arbitrary property to associate with image. May be
used multiple times.
--file <FILE> Local file that contains disk image to be uploaded
during creation. Alternatively, the image data can be
passed to the client via stdin.
--progress Show upload progress bar.
Run `glance --os-image-api-version 1 help image-create` for v1 help
类似资料：