1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
.. _install:
Install and configure
~~~~~~~~~~~~~~~~~~~~~
This section describes how to install and configure the Messaging service,
code-named zaqar.
This section assumes that you already have a working OpenStack environment with
at least Identity service installed.
Note that installation and configuration vary by distribution.
.. toctree::
install-rdo.rst
install-ubuntu.rst
Possible Minimum Scalable HA Setup
----------------------------------
Scalable HA (High availability) setup is out of scope in this chapter.
For a HA setup, a load balancer has to be placed in front of the web servers.
To provide high availability with minimum administration overhead for storage
use ``MongoDB`` driver and for transport use ``wsgi`` driver.
To have a small footprint while providing HA, you can use two web servers which
will host the application and three ``MongoDB`` servers (configured as
replica-set) which will host Messaging service's management store and
message store databases. At larger scale, the management store database and the
message store database are advised to be hosted on different ``MongoDB``
replica sets.
|
