openstack计算节点的zone划分
初步了解了一些openstack zone的使用方法，觉得比较实用，在此分享给大家：# nova aggregate-list
Print a list of all aggregates.
# nova aggregate-create
Create a new aggregate namedin availability zone . Returns the ID of the newly created aggregate.
# nova aggregate-delete
Delete an aggregate with id .
# nova aggregate-details
Show details of the aggregate with id .
# nova aggregate-add-host
Add host with nameto aggregate with id .
# nova aggregate-remove-host
Remove the host with namefrom the aggregate with id .
# nova aggregate-set-metadata [ ...]
Add or update metadata (key-value pairs) associated with the aggregate with id .
# nova aggregate-update []
Update the aggregate's name and optionally availability zone.
# nova host-list
List all hosts by service.
# nova host-update --maintenance
Put/resume host into/from maintenance.
http://docs.openstack.org/grizzly/openstack-compute/admin/content/host-aggregates.html
举例：
# nova aggregate-list
+----+------+-------------------+
| Id | Name | Availability Zone |
+----+------+-------------------+
+----+------+-------------------+
# nova aggregate-create clusterA cluster-12C-128G
+----+----------+-------------------+-------+--------------------------------------+
| Id | Name | Availability Zone | Hosts | Metadata |
+----+----------+-------------------+-------+--------------------------------------+
| 1| clusterA | cluster-12C-128G| | 'availability_zone=cluster-12C-128G' |
+----+----------+-------------------+-------+--------------------------------------+
# nova aggregate-create clusterB cluster-12C-48G
+----+----------+-------------------+-------+-------------------------------------+
| Id | Name | Availability Zone | Hosts | Metadata |
+----+----------+-------------------+-------+-------------------------------------+
| 2| clusterB | cluster-12C-48G | | 'availability_zone=cluster-8C-48G' |
+----+----------+-------------------+-------+-------------------------------------+
# nova aggregate-list
+----+----------+-------------------+
| Id | Name | Availability Zone |
+----+----------+-------------------+
| 1| clusterA | cluster-12C-128G|
| 2| clusterB | cluster-8C-48G |
+----+----------+-------------------+
# nova aggregate-list
+----+----------+-------------------+
| Id | Name | Availability Zone |
+----+----------+-------------------+
| 1| clusterA | cluster-12C-128G|
| 3| clusterB | cluster-8C-48G |
+----+----------+-------------------+
# nova aggregate-add-host 1 node01
Host node01 has been successfully added for aggregate 1
+----+----------+-------------------+----------+--------------------------------------+
| Id | Name | Availability Zone | Hosts | Metadata |
+----+----------+-------------------+----------+--------------------------------------+
| 1| clusterA | cluster-12C-128G| 'node01' | 'availability_zone=cluster-12C-128G' |
+----+----------+-------------------+----------+--------------------------------------+
# nova aggregate-add-host 2 node02
Host node02 has been successfully added for aggregate 2
+----+----------+-------------------+--------------------+--------------------------------------+
| Id | Name | Availability Zone | Hosts | Metadata |
+----+----------+-------------------+--------------------+--------------------------------------+
| 1| clusterA | cluster-8C-48G| 'node02' | 'availability_zone=cluster-8C-48G' |
+----+----------+-------------------+--------------------+--------------------------------------
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