4.镜像服务glance迁移

镜像服务glance迁移

目的:将镜像服务独立出来,装到新的主机上

1.先停掉老的镜像服务

我这里旧的glance装在了控制节点上

systemctl stop openstack-glance-api.service openstack-glance-registry.service
systemctl disable openstack-glance-api.service openstack-glance-registry.service

2.在新的主机上安装数据库

yum install mariadb mariadb-server python2-PyMysql -y

启动数据库

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systemctl start mariadb
systemctl enable mariadb

数据库安全初始化

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mysql_secure_installation
回车
n
y
y
y
y

3.恢复glance数据库数据

先备份老的glance主机上的数据库
mysql_secure_installation

将数据库备份发到新的主机上
scp glance.sql root@新主机地址:/opt

将备份导入数据库
mysql < glance.sql

查看导进去的表
mysql glance -e 'show tables;'

数据库授权

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对glance数据库授予恰当的权限：

GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'localhost' \
  IDENTIFIED BY 'GLANCE_DBPASS';
  
GRANT ALL PRIVILEGES ON glance.* TO 'glance'@'%' \
  IDENTIFIED BY 'GLANCE_DBPASS';

4.安装配置glance服务

yum install openstack-glance -y

拉取旧的配置文件到新的主机

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scp -rp /etc/glance/glance-registry.conf root@10.10.15.35:/etc/glance/glance-registry.conf 

scp -rp /etc/glance/glance-api.conf root@10.10.15.35:/etc/glance/glance-api.conf

修改配置文件,将地址改为新的主机

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vim /etc/glance/glance-api.conf
[database]
...
connection = mysql+pymysql://glance:GLANCE_DBPASS@新主机IP地址/glance

vim /etc/glance/glance-registry.conf
[database]
...
connection = mysql+pymysql://glance:GLANCE_DBPASS@新主机IP地址/glance

5.启动镜像服务

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systemctl start openstack-glance-api.service openstack-glance-registry.service 
systemctl enable openstack-glance-api.service openstack-glance-registry.service

验证