Cartridge agent manages cartridge instance lifecycle and publishes its health statistics to Complex Event Processor (CEP). It provides a set of extension points for implementing logic required for configuring the server.
The PCA depends on a few mandatory configurations.
The PCA conducts communication with the rest of the Stratos Components mainly via the message broker. Therefore, without the message broker configuration the PCA wouldn't start properly. Following are the configurations related to message broker communication in the PCA.
The first two options allow to define a single message broker host and a port. The third option mb.urls allows to define a comma separated list of message broker urls, out of which the PCA will failover until a successful connection is made. It should be noted that mb.urls has precedence over mb.ip and mb.ip pair. mb.ip and mb.port will only be taken in to consideration if only mb.urls is empty. If none of the two options are specified, the PCA will not start.
Also, when using a list of message brokers, the PCA only allows to specify a single pair of mb.username and mb.password.
mb.publisher.timeout specifies the maximum timeout value (in seconds) for the message publisher to retry publishing an event, before giving up and dropping the event.
mb.port = 1883 mb.host = 10.100.4.33 mb.urls = 10.100.4.21:1883,10.100.4.22:1883,10.100.4.23:1885 mb.username = system mb.password = manager
The PCA publishes health statistics to a CEP via Thrift. For this, the list of Thrift receivers should be specified using the following configuration options.
thrift.receiver.urls = 10.100.4.21:7711,10.100.4.22:7711,10.100.4.23:7711 thrift.server.admin.username = admin thrift.server.admin.password = admin cep.stats.publisher.enabled = true
APPLICATION_PATH refers to the document root of the application service that is running in the specific instance which the PCA manages. For example, in a PHP instance this would be /var/www. This has to be either passed through the IaaS metadata service or passed in via the agent.conf configuration file.
Install following packages
apt-get install -y git python python-pip python-dev gcc zip
Install dependent python modules:
pip install paho-mqtt pip install psutil pip install pexpect pip install pycrypto pip install gitpython pip install yapsy
Start ActiveMQ:
<activemq-home>/bin/activemq start
Run python cartridge agent live tests:
mvn clean install -Plive