Installing Manually

Storage Backend Installation

This step is a prerequisite for the collector, notification agent and API services. You may use one of the listed database backends below to store Aodh data.

Note

Please notice, MongoDB requires pymongo to be installed on the system. The required minimum version of pymongo is 2.4.

MongoDB

The recommended Aodh storage backend is MongoDB. Follow the instructions to install the MongoDB package for your operating system, then start the service. The required minimum version of MongoDB is 2.4.

To use MongoDB as the storage backend, change the ‘database’ section in aodh.conf as follows:

[database]
connection = mongodb://username:password@host:27017/aodh

If MongoDB is configured in replica set mode, add ?replicaSet= in your connection URL:

[database]
connection = mongodb://username:password@host:27017/aodh?replicaSet=foobar

SQLalchemy-supported DBs

You may alternatively use MySQL (or any other SQLAlchemy-supported DB like PostgreSQL).

In case of SQL-based database backends, you need to create a aodh database first and then initialise it by running:

aodh-dbsync

To use MySQL as the storage backend, change the ‘database’ section in aodh.conf as follows:

[database]
connection = mysql+pymysql://username:password@host/aodh?charset=utf8

HBase

HBase backend is implemented to use HBase Thrift interface, therefore it is mandatory to have the HBase Thrift server installed and running. To start the Thrift server, please run the following command:

${HBASE_HOME}/bin/hbase thrift start

The implementation uses HappyBase, which is a wrapper library used to interact with HBase via Thrift protocol. You can verify the thrift connection by running a quick test from a client:

import happybase

conn = happybase.Connection(host=$hbase-thrift-server, port=9090, table_prefix=None)
print conn.tables() # this returns a list of HBase tables in your HBase server

Note

HappyBase version 0.5 or greater is required. Additionally, version 0.7 is not currently supported.

In case of HBase, the needed database tables (project, user, resource, meter, alarm, alarm_h) should be created manually with f column family for each one.

To use HBase as the storage backend, change the ‘database’ section in aodh.conf as follows:

[database]
connection = hbase://hbase-thrift-host:9090