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Docker image for Monasca API

The Monasca API image is based on the monasca-base image.

Building monasca-base image

See https://github.com/openstack/monasca-common/tree/master/docker/README.rst

Building Monasca API image

Example:

$ ./build_image.sh <repository_version> <upper_constains_branch> <common_version>

Everything after ./build_image.sh is optional and by default configured to get versions from Dockerfile. ./build_image.sh also contain more detailed build description.

Environment variables

Variable Default Description
KAFKA_URI kafka:9092 URI to Apache Kafka (distributed streaming platform)
MONASCA_CONTAINER_API_PORT 8070 The port from the metric pipeline endpoint
DATABASE_BACKEND influxdb Select for backend database
INFLUX_HOST influxdb The host for influxdb
INFLUX_PORT 8086 The port for influxdb
INFLUX_USER mon_api The influx username
INFLUX_PASSWORD password The influx password
INFLUX_DB mon The influx database name
CASSANDRA_CONTACT_POINTS cassandra Cassandra node addresses
CASSANDRA_PORT 9042 Cassandra port number
CASSANDRA_KEY_SPACE monasca Cassandra keyspace where metric are stored
CASSANDRA_USER mon_persister Cassandra user name
CASSANDRA_PASSWORD password Cassandra password
CASSANDRA_CONNECTION_TIMEOUT 5 Cassandra timeout in seconds when creating a new connection
MYSQL_HOST mysql The host for MySQL
MYSQL_PORT 3306 The port for MySQL
MYSQL_USER monapi The MySQL username
MYSQL_PASSWORD password The MySQL password
MYSQL_DB mon The MySQL database name
API_MYSQL_DISABLED unset If 'true' do not use a mysql database. Only metric API will work
MEMCACHED_URI memcached:11211 URI to Keystone authentication cache
DEFAULT_REGION RegionOne Region that API is running in
AUTHORIZED_ROLES admin,domainuser,domainadmin,monasca-user Roles for Monasca users (full API access)
AGENT_AUTHORIZED_ROLES monasca-agent Roles for Monasca agents (sending data only)
READ_ONLY_AUTHORIZED_ROLES monasca-read-only-user Roles for read only users
DELEGATE_AUTHORIZED_ROLES admin Roles allow to read/write cross tenant ID
KEYSTONE_IDENTITY_URI http://keystone:35357 URI to Keystone admin endpoint
KEYSTONE_AUTH_URI http://keystone:5000 URI to Keystone public endpoint
KEYSTONE_ADMIN_USER admin OpenStack administrator user name
KEYSTONE_ADMIN_PASSWORD secretadmin OpenStack administrator user password
KEYSTONE_ADMIN_TENANT admin OpenStack administrator tenant name
KEYSTONE_ADMIN_DOMAIN default OpenStack administrator domain
KEYSTONE_INSECURE false Allow insecure Keystone connection
KEYSTONE_REGION_NAME undefined Keystone admin account region
GUNICORN_WORKERS 9 Number of gunicorn (WSGI-HTTP server) workers
GUNICORN_WORKER_CLASS gevent Used gunicorn worker class
GUNICORN_WORKER_CONNECTIONS 2000 Number of gunicorn worker connections
GUNICORN_BACKLOG 1000 Number of gunicorn backlogs
GUNICORN_TIMEOUT 10 Gunicorn connection timeout
ADD_ACCESS_LOG false Enable gunicorn request/access logging
ACCESS_LOG_FORMAT "%(asctime)s [%(process)d] gunicorn.access [%(levelname)s] %(message)s" Define the logging format
ACCESS_LOG_FIELDS '%(h)s %(l)s %(u)s %(t)s %(r)s %(s)s %(b)s "%(f)s" "%(a)s" %(L)s' Define the fields to be logged
LOG_LEVEL_ROOT WARN Log level for root logging
LOG_LEVEL_CONSOLE INFO Log level for console logging
LOG_LEVEL_ACCESS INFO Log level for access logging
STAY_ALIVE_ON_FAILURE false If true, container runs 2 hours after service fail

Wait scripts environment variables

Variable Default Description
KAFKA_URI kafka:9092 URI to Apache Kafka

KAFKA_WAIT_FOR_TOPICS

alarm-state-transitions,metrics

The topics where metric-api streams the metric messages and alarm-states

KAFKA_WAIT_RETRIES 24 Number of kafka connect attempts
KAFKA_WAIT_DELAY 5 Seconds to wait between attempts
MYSQL_HOST mysql The host for MySQL
MYSQL_PORT 3306 The port for MySQL
MYSQL_USER monapi The MySQL username
MYSQL_PASSWORD password The MySQL password
MYSQL_DB mon The MySQL database name
MYSQL_WAIT_RETRIES 24 Number of MySQL connection attempts
MYSQL_WAIT_DELAY 5 Seconds to wait between attempts

Scripts

start.sh

In this starting script provide all steps that lead to the proper service start. Including usage of wait scripts and templating of configuration files. You also could provide the ability to allow running container after service died for easier debugging.

health_check.py

This file will be used for checking the status of the application.

Provide Configuration templates

https://docs.openstack.org/monasca-api/latest/

https://github.com/openstack/monasca-api/blob/master/README.rst