OpenStack Ussuri版安装系列—4控制节点-Glance镜像服务组件

野性酷女 2023-01-12 11:59 211阅读 0赞

# Glance镜像服务组件 #

> **OpenStack部署系列文章**  
> [OpenStack Victoria版 安装部署系列教程][OpenStack Victoria_]  
> [OpenStack Ussuri版 离线安装部署系列教程（全）][OpenStack Ussuri_]  
> [OpenStack Train版 离线安装部署系列教程（全）][OpenStack Train_]  
> 欢迎留言沟通，共同进步。

> 官方参考链接：  
> [OpenStack安装指南：服务组件][OpenStack]  
> [glance-install][]  
> [OpenStack Ussuri Installation Guides][]  
> 博客：  
> [CentOS7安装OpenStack(Rocky版)-03.安装Glance镜像服务组件（控制节点）][CentOS7_OpenStack_Rocky_-03._Glance]  
> [OpenStack Train版-3.安装glance镜像服务][OpenStack Train_-3._glance]  
> CSDN链接：  
> [5Openstack-Ussuri-Glance集群部署-centos8][5Openstack-Ussuri-Glance_-centos8]  
> [4控制节点-Glance镜像服务组件][4_-Glance]

**创建域、角色、域、用户的时候需要注意**

--------------------

### 目录 ###

*  Glance镜像服务组件
 *   *  一、创建glance相关数据库、凭据与API端点
     *   *  1.创建glance数据库并授权
         *  2.创建服务凭据
         *  3.创建镜像服务的 API 端点（endpoint）
     *  二、glance相关软件安装与配置
     *   *  1.检查Python版本
         *  2.安装glance软件
         *  3.配置文件修改
         *   *  （1）glance-api.conf
             *  （2）glance-registry.conf
         *  4.同步glance数据库
         *  5.glance镜像服务启动并设置开机自启
     *  三、验证glance安装正确
     *  1.下载镜像
     *   *  2.加载环境变量，获取管理员权限
         *  3.上传镜像
         *  4.查看镜像

--------------------

## 一、创建glance相关数据库、凭据与API端点 ##

### 1.创建glance数据库并授权 ###

使用mysql数据库的root账户登录，密码为控制节点环境准备时初始化mysql数据设置的密码为root。

mysql -u root -proot

创建glance数据库并授权

CREATE DATABASE glance;
    GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' IDENTIFIED BY 'glance';
    GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' IDENTIFIED BY 'glance';
    
    flush privileges;
    show databases;
    select user,host from mysql.user;
    exit

### 2.创建服务凭据 ###

（1）在keystone上创建glance用户  
以下命令在local\_user表创建glance用户

cd 
    source admin-openrc.sh
    openstack user create --domain default --password=glance glance
    openstack user list

（2）在keystone上将glance用户添加为service项目的admin角色(权限)  
以下命令无输出

openstack role add --project service --user glance admin

（3）创建glance镜像服务的实体  
以下命令在service表中增加glance项目

openstack service create --name glance --description "OpenStack Image" image
    openstack service list

### 3.创建镜像服务的 API 端点（endpoint） ###

【这里会影响API的调用】  
以下命令会在endpoint表增加3条项目

openstack endpoint create --region RegionOne image public http://controller:9292
    openstack endpoint create --region RegionOne image internal http://controller:9292
    openstack endpoint create --region RegionOne image admin http://controller:9292
    
    openstack endpoint list
    #

或者

openstack endpoint create --region RegionOne image public http://192.168.232.101:9292
    openstack endpoint create --region RegionOne image internal http://192.168.232.101:9292
    openstack endpoint create --region RegionOne image admin http://192.168.232.101:9292
    查看API端点
    openstack endpoint list
    #

至此，glance在keystone上面注册完成，可以进行安装

## 二、glance相关软件安装与配置 ##

### 1.检查Python版本 ###

在安装glance前需要确认系统的Python版本

[root@controller ~]# python --version
    -bash: python: command not found
    [root@controller ~]# python3
    Python 3.6.8 (default, Aug 24 2020, 17:57:11)
    [GCC 8.3.1 20191121 (Red Hat 8.3.1-5)] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>> exit()
    [root@controller ~]#

配置系统默认Python版本

[root@controller ~]# ll /usr/bin/
    Display all 1507 possibilities? (y or n)
    [root@controller ~]# ll /usr/bin/p
    Display all 117 possibilities? (y or n)
    [root@controller ~]# ll /usr/bin/py
    py3-lesscpy              pyroute2-cli             pyrsa-encrypt-3          pyrsa-priv2pub-3         python3
    pydoc-3                  pyrsa-decrypt            pyrsa-encrypt-bigfile    pyrsa-sign               python3-django-admin
    pydoc3                   pyrsa-decrypt-3          pyrsa-encrypt-bigfile-3  pyrsa-sign-3             python3.6
    pydoc3.6                 pyrsa-decrypt-bigfile    pyrsa-keygen             pyrsa-verify             python3.6m
    pyinotify                pyrsa-decrypt-bigfile-3  pyrsa-keygen-3           pyrsa-verify-3           pyvenv-3
    pyjwt                    pyrsa-encrypt            pyrsa-priv2pub           pyscss                   pyvenv-3.6
    [root@controller ~]# ll /usr/bin/python3
    python3               python3-django-admin  python3.6             python3.6m
    [root@controller ~]# ll /usr/bin/python3
    python3               python3-django-admin  python3.6             python3.6m
    [root@controller ~]# ln -s /usr/bin/python3 /usr/bin/python
    [root@controller ~]# ll /usr/bin/python
    lrwxrwxrwx. 1 root root 16 Jan 28 11:40 /usr/bin/python -> /usr/bin/python3
    [root@controller ~]# ll /usr/bin/python*
    lrwxrwxrwx. 1 root root 16 Jan 28 11:40 /usr/bin/python -> /usr/bin/python3
    lrwxrwxrwx. 1 root root 25 Jan 25 16:56 /usr/bin/python3 -> /etc/alternatives/python3
    lrwxrwxrwx. 1 root root 14 Jan 25  2020 /usr/bin/python3-django-admin -> ./django-admin
    lrwxrwxrwx. 1 root root 31 Nov  4 12:04 /usr/bin/python3.6 -> /usr/libexec/platform-python3.6
    lrwxrwxrwx. 1 root root 32 Nov  4 12:04 /usr/bin/python3.6m -> /usr/libexec/platform-python3.6m
    [root@controller ~]#

[root@controller ~]# python -V
    Python 3.6.8
    [root@controller ~]#

### 2.安装glance软件 ###

yum install openstack-glance python3-glance python3-glanceclient -y

### 3.配置文件修改 ###

#### （1）glance-api.conf ####

文件路径：/etc/glance/glance-api.conf  
修改前先备份

cd /etc/glance/
    cp glance-api.conf glance-api.conf.bak
    vim cp glance-api.conf

[database]
    # ...
    connection = mysql+pymysql://glance:GLANCE_DBPASS@controller/glance
    
    [keystone_authtoken]
    # ...
    www_authenticate_uri  = http://controller:5000
    auth_url = http://controller:5000
    memcached_servers = controller:11211
    auth_type = password
    project_domain_name = Default
    user_domain_name = Default
    project_name = service
    username = glance
    password = glance
    
    [paste_deploy]
    # ...
    flavor = keystone
    
    [glance_store]
    # ...
    stores = file,http
    default_store = file
    filesystem_store_datadir = /var/lib/glance/images/

grep '^[a-z]' /etc/glance/glance-api.conf

#### （2）glance-registry.conf ####

/etc/glance/glance-registry.conf  
依次执行以下命令，将其写入脚本，执行脚本

cp glance-registry.conf glance-registry.conf.bak
    vim glance-registry.conf

grep '^[a-z]' /etc/glance/glance-registry.conf

至此，glance服务安装完毕，该服务需要启动，而后进行配置

### 4.同步glance数据库 ###

(1)为glance镜像服务初始化同步数据库  
生成的相关表

su -s /bin/sh -c "glance-manage db_sync" glance

忽略输出的内容,最后结果为：Database is synced successfully.

（2）同步完成进行连接测试  
保证所有需要的表已经建立，否则后面可能无法进行下去

mysql -uglance -pglance -e "use glance;show tables;"

### 5.glance镜像服务启动并设置开机自启 ###

systemctl start openstack-glance-api.service openstack-glance-registry.service
    systemctl status openstack-glance-api.service openstack-glance-registry.service
    
    systemctl enable openstack-glance-api.service openstack-glance-registry.service
    systemctl list-unit-files |grep openstack-glance*

## 三、验证glance安装正确 ##

## 1.下载镜像 ##

cd
    wget http://download.cirros-cloud.net/0.4.0/cirros-0.4.0-x86_64-disk.img
    wget http://download.cirros-cloud.net/0.3.5/cirros-0.3.5-x86_64-disk.img
    wget http://download.cirros-cloud.net/0.5.0/cirros-0.5.0-x86_64-disk.img

### 2.加载环境变量，获取管理员权限 ###

source admin-openrc.sh

### 3.上传镜像 ###

使用qcow2磁盘格式， bare容器格式上传镜像到镜像服务并设置公共可见，这样所有的项目都可以访问它

glance image-create --name "cirros-0.5.0-x86_64-disk.img" --file ./cirros-0.5.0-x86_64-disk.img  --disk-format qcow2 --container-format bare  --visibility public
    glance image-create --name "cirros-0.4.0" --file ./cirros-0.4.0-x86_64-disk.img  --disk-format qcow2 --container-format bare  --visibility public
    openstack image create "cirros-0.3.5"  --file ./cirros-0.3.5-x86_64-disk.img --disk-format qcow2 --container-format bare --public

实例

### 4.查看镜像 ###

openstack image list

至此glance镜像服务安装、启动成功。

[OpenStack Victoria_]: https://blog.csdn.net/u013469753/article/details/116122782
[OpenStack Ussuri_]: https://blog.csdn.net/u013469753/article/details/106549085
[OpenStack Train_]: https://blog.csdn.net/u013469753/article/details/106549917
[OpenStack]: https://docs.openstack.org/install-guide/openstack-services.html
[glance-install]: https://docs.openstack.org/glance/ussuri/install/
[OpenStack Ussuri Installation Guides]: https://docs.openstack.org/ussuri/install/
[CentOS7_OpenStack_Rocky_-03._Glance]: https://www.cnblogs.com/tssc/p/9858964.html
[OpenStack Train_-3._glance]: https://yinwucheng.com/?p=433
[5Openstack-Ussuri-Glance_-centos8]: https://blog.csdn.net/caiyqn/article/details/106837142
[4_-Glance]: https://blog.csdn.net/u013469753/article/details/106274344