openstack/openstack-ansible
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Adjust typesetting of disk requirements

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Change-Id: I74d1ecf13a347391a6763b7baadc7cefe7c5a5c2
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Fergus Yu 2017-05-09 19:52:41 +08:00
parent 310c3cc797
commit bf0fdb52d5
1 changed files with 15 additions and 10 deletions
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deploy-guide/source/overview-requirements.rst
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@ -55,26 +55,31 @@ Different hosts have different disk space requirements based on the
services running on each host: services running on each host:
Deployment hosts Deployment hosts
Ten GB of disk space is sufficient for holding the OpenStack-Ansible A minimum of ``10 GB`` of disk space is sufficient for holding the
repository content and additional required software. OpenStack-Ansible repository content and additional required software.
Compute hosts Compute hosts
Disk space requirements depend on the total number of instances Disk space requirements depend on the total number of instances
running on each host and the amount of disk space allocated to each instance. running on each host and the amount of disk space allocated to each instance.
Compute hosts must have a minimum of 1 TB of disk space available. Consider
disks that provide higher I/O throughput with lower latency, such as SSD * Compute hosts must have a minimum of ``1 TB`` of disk space available.
drives in a RAID array.
* Consider disks that provide higher I/O throughput with lower latency,
such as SSD drives in a RAID array.
Storage hosts Storage hosts
Hosts running the Block Storage (cinder) service often consume the most disk Hosts running the Block Storage (cinder) service often consume the most disk
space in OpenStack environments. Storage hosts must have a minimum of 1 TB space in OpenStack environments.
of disk space. As with Compute hosts, choose disks that provide the highest
I/O throughput with the lowest latency. * Storage hosts must have a minimum of ``1 TB`` of disk space.
* As with Compute hosts, choose disks that provide the highest
I/O throughput with the lowest latency.
Infrastructure (control plane) hosts Infrastructure (control plane) hosts
The OpenStack control plane contains storage-intensive services, such as the The OpenStack control plane contains storage-intensive services, such as the
Image service (glance), and MariaDB. These hosts must have a minimum of Image service (glance), and MariaDB. These hosts must have a minimum of
100 GB of disk space. ``100 GB`` of disk space.
Logging hosts Logging hosts
An OpenStack-Ansible deployment generates a significant amount of log An OpenStack-Ansible deployment generates a significant amount of log
@ -83,7 +88,7 @@ Logging hosts
hosts need sufficient disk space to hold live and rotated (historical) log hosts need sufficient disk space to hold live and rotated (historical) log
files. In addition, the storage performance must be able to keep pace with files. In addition, the storage performance must be able to keep pace with
the log traffic coming from various hosts and containers within the OpenStack the log traffic coming from various hosts and containers within the OpenStack
environment. Reserve a minimum of 50 GB of disk space for storing logs on environment. Reserve a minimum of ``50 GB`` of disk space for storing logs on
the logging hosts. the logging hosts.
Hosts that provide Block Storage volumes must have Logical Volume Hosts that provide Block Storage volumes must have Logical Volume