OpenStack 镜像服务Glance [三]

Posted 2020-09-23

OpenStack镜像服务Glance介绍

Linux运维开发群：545410476，群内有很多优秀的分类资料和大佬。

创建虚拟机我们需要有glance的支持，因为glance是提供镜像服务 
glance有两个比较重要的服务 
Glance-api接受云系统镜像的构建、删除、读取请求 
Glance-Registry云系统的镜像注册服务 
　　我们需要配置glance-api的配置文件和glance-registry配置文件 
　　glance不需要配置消息队列，但是glance需要配置keystone（认证中心）

提示：默认情况下上传镜像存放在/var/lib/glance/images下

安装glance 
创建数据库和在keystone上创建glance用户我们已经创建完成

安装软件包

[[email protected] ~]# yum install openstack-glance -y

修改数据库地址

[[email protected] ~]# vim /etc/glance/glance-api.conf[database]…connection = mysql+pymysql://glance:[email protected]/glance…[[email protected] ~]# vim /etc/glance/glance-registry.conf[database]…connection = mysql+pymysql://glance:[email protected]/glance…#打开注释，写mysql地址，注意是在database默认下

修改完之后我们需要同步数据库

[[email protected] ~]# su -s /bin/sh -c "glance-manage db_sync" glance#替我们去创建表结构，openstack有警告没有关系，只要不是error就可以

同步完数据库之后我们进行检查

[[email protected] ~]# mysql -h 192.168.56.11 -u glance -pglance -e "use glance;show tables;"+----------------------------------+| Tables_in_glance                 |+----------------------------------+| artifact_blob_locations          || artifact_blobs                   || artifact_dependencies            || artifact_properties              || artifact_tags                    || artifacts                        || image_locations                  || image_members                    || image_properties                 || image_tags                       || images                           || metadef_namespace_resource_types || metadef_namespaces               || metadef_objects                  || metadef_properties               || metadef_resource_types           || metadef_tags                     || migrate_version                  || task_info                        || tasks                            |+----------------------------------+

我们要确保数据库可以进行同步

设置keystone

在[keystone_authtoken]进行设置

[[email protected] ~]# vim /etc/glance/glance-api.conf…[keystone_authtoken]auth_uri = http://192.168.56.11:5000auth_url = http://192.168.56.11:35357memcached_servers = 192.168.56.11:11211auth_type = password                    #验证类型为密码project_domain_name = default           #默认域user_domain_name = default              #用户默认域project_name = service                  #项目名称username = glance                       #用户password = glance                       #密码

提示：必须复制在[keystone_authtoken]模块下，否则不生效 
还需要设置[paste_deploy]模块

[paste_deploy]flavor = keystone#去掉注释并修改为keystone

设置registry，和api的设置一样

[[email protected] ~]# vim /etc/glance/glance-registry.conf…[keystone_authtoken]auth_uri = http://192.168.56.11:5000auth_url = http://192.168.56.11:35357memcached_servers = 192.168.56.11:11211auth_type = password                    project_domain_name = default           user_domain_name = default              project_name = service                  username = glance                       password = glance            …[paste_deploy]flavor = keystone

配置镜像路径 
在glance-api配置本地文件系统存储和镜像文件位置

[[email protected] ~]# vim /etc/glance/glance-api.conf…[glance_store]stores = file,httpdefault_store = filefilesystem_store_datadir = /var/lib/glance/images#以上配置都是打开注释就可以

检查 
glance-api配置文件配置小结：

[[email protected] ~]# grep ‘^[a-z]‘ /etc/glance/glance-api.conf connection = mysql+pymysql://glance:[email protected]/glancestores = file,httpdefault_store = filefilesystem_store_datadir = /var/lib/glance/imagesauth_uri = http://192.168.56.11:5000auth_url = http://192.168.56.11:35357memcached_servers = 192.168.56.11:11211auth_type = password        project_domain_name = default  user_domain_name = defaultproject_name = service  username = glancepassword = glanceflavor = keystone

registry配置如下

[[email protected] ~]# grep ‘^[a-z]‘ /etc/glance/glance-registry.conf connection = mysql+pymysql://glance:[email protected]/glanceauth_uri = http://192.168.56.11:5000auth_url = http://192.168.56.11:35357memcached_servers = 192.168.56.11:11211auth_type = password project_domain_name = defaultuser_domain_name = default   project_name = service      username = glance          password = glance         flavor = keystone提示：registry和api的配置跟我一样现在我们就可以启动了

设置开启启动并开启服务

[[email protected] ~]# systemctl enable openstack-glance-api.service [[email protected] ~]# systemctl enable openstack-glance-registry.service [[email protected] ~]# systemctl start openstack-glance-api.service [[email protected] ~]# systemctl start openstack-glance-registry.service

提示：9292是glance-api的端口，9191是glance-registry的端口

在keystone上设置服务注册 
1.创建服务

[[email protected] ~]# source admin-openstack.sh [[email protected] ~]# openstack service create --name glance --description "OpenStack Image" image+-------------+----------------------------------+| Field       | Value                            |+-------------+----------------------------------+| description | OpenStack Image                  || enabled     | True                             || id          | c9fd28645efe45faa2a9cf2f2cce623e || name        | glance                           || type        | image                            |+-------------+----------------------------------+

2.创建镜像服务的API端点

[[email protected] ~]# openstack endpoint create --region RegionOne \> image public http://192.168.56.11:9292+--------------+----------------------------------+| Field        | Value                            |+--------------+----------------------------------+| enabled      | True                             || id           | cabb8016fef74b438a341866ef10917f || interface    | public                           || region       | RegionOne                        || region_id    | RegionOne                        || service_id   | c9fd28645efe45faa2a9cf2f2cce623e || service_name | glance                           || service_type | image                            || url          | http://192.168.56.11:9292        |+--------------+----------------------------------+[[email protected] ~]# openstack endpoint create --region RegionOne image internal http://192.168.56.11:9292+--------------+----------------------------------+| Field        | Value                            |+--------------+----------------------------------+| enabled      | True                             || id           | 0bafb4e5d90745d789a16c97fc3f5688 || interface    | internal                         || region       | RegionOne                        || region_id    | RegionOne                        || service_id   | c9fd28645efe45faa2a9cf2f2cce623e || service_name | glance                           || service_type | image                            || url          | http://192.168.56.11:9292        |+--------------+----------------------------------+[[email protected] ~]# openstack endpoint create --region RegionOne image admin http://192.168.56.11:9292+--------------+----------------------------------+| Field        | Value                            |+--------------+----------------------------------+| enabled      | True                             || id           | 911d06d783094d62bf2cf97e4dd3fed6 || interface    | admin                            || region       | RegionOne                        || region_id    | RegionOne                        || service_id   | c9fd28645efe45faa2a9cf2f2cce623e || service_name | glance                           || service_type | image                            || url          | http://192.168.56.11:9292        |+--------------+----------------------------------+

测试 
我们可以使用openstack list或者glance list进行查看

[[email protected] ~]# openstack image list[[email protected] ~]# glance image-list+----+------+| ID | Name |+----+------++----+------+

提示：如果此处没有出现空，那么这时候就需要看日志了。

最后我们可以上传一个镜像进行测试

[[email protected] ~]# wget http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-x86_64-disk.img

我们下载上面的镜像进行测试

[[email protected] ~]# openstack image create "cirros" \>   --file cirros-0.3.4-x86_64-disk.img \>   --disk-format qcow2 --container-format bare \>   --public+------------------+------------------------------------------------------+| Field            | Value                                                |+------------------+------------------------------------------------------+| checksum         | ee1eca47dc88f4879d8a229cc70a07c6                     || container_format | bare                                                 || created_at       | 2016-11-17T10:34:14Z                                 || disk_format      | qcow2                                                || file             | /v2/images/fc67361d-ad30-40b2-9d96-941e50fc17f5/file || id               | fc67361d-ad30-40b2-9d96-941e50fc17f5                 || min_disk         | 0                                                    || min_ram          | 0                                                    || name             | cirros                                               || owner            | 026a58f98402437fa95ef4a21fbd4d1a                     || protected        | False                                                || schema           | /v2/schemas/image                                    || size             | 13287936                                             || status           | active                                               || tags             |                                                      || updated_at       | 2016-11-17T10:34:14Z                                 || virtual_size     | None                                                 || visibility       | public                                               |+------------------+------------------------------------------------------+

#提示：如果没有环境变量还需要source一下

检查是否上传成功

[[email protected] ~]# openstack image list+--------------------------------------+--------+--------+| ID                                   | Name   | Status |+--------------------------------------+--------+--------+| fc67361d-ad30-40b2-9d96-941e50fc17f5 | cirros | active |+--------------------------------------+--------+--------+[[email protected] ~]# glance image-list+--------------------------------------+--------+| ID                                   | Name   |+--------------------------------------+--------+| fc67361d-ad30-40b2-9d96-941e50fc17f5 | cirros |+--------------------------------------+--------+[[email protected] ~]# ls /var/lib/glance/images/fc67361d-ad30-40b2-9d96-941e50fc17f5镜像存放在/var/lib/glance/images下

[M版本] 
官方中文文档：http://docs.openstack.org/mitaka/zh_CN/install-guide-rdo/keystone-install.html

摘要

创建虚拟机我们需要有glance的支持，因为glance是提供镜像服务，glance有两个比较重要的服务 Glance-api接受云系统镜像的构建、删除、读取请求 Glance-Registry云系统的镜像注册服务

本文出自 “一盏烛光” 博客，谢绝转载！