OBP API Setup for Fault Tolerance

NGINX Configuration for Load Balancing Create file /etc/nginx/sites-available/api Configure as follows

upstream backend { least_conn; server host1:8080; # The name of the server shall be changed as appropriate server host2:8080; server host3:8080; }

server { server_name obptest.com www.obptest.com; # The server name should be changed as appropriate access_log /var/log/nginx/api.access.log; error_log /var/log/nginx/api.error.log; location / { proxy_pass http://backend/; } location /obp/v2.1.0/sandbox/data-import { proxy_pass http://backend/; } }

Zookeeper/Kafka Cluster Setup The Zookeeper/Kafka cluster is deployed on 3 nodes. The following configurations need to be done on each of the three nodes Zookeeper configuration Inside the Kafka directory, edit the file conf/zookeeper.properties and include these lines

dataDir=/home/user/zookeeper

server.1=host1:2888:3888 # The name of the servers shall be changed as appropriate server.2=host2:2888:3888 server.3=host3:2888:3888 initLimit=5 syncLimit=2

Create a myid file under dataDir which is /home/user/zookeeper in this example

echo “1” > /home/user/zookeeper/myid #Insert unique id’s on each of the machines Start the zookpeer daemons on each of the 3 machines

bin/zookeeper-server-start.sh config/zookeeper.properties &

Kafka Configuration Inside the Kafka directory, edit the file conf/server.properties and include these lines

broker.id=1 # The broker.id should be unique for each host

num.partitions=4

zookeeper.connect=host1:2181,host2:2181,host3:2181

Start the kafka broker daemons on all the machines

bin/kafka-server-start.sh config/server.properties &

Create the topics

bin/kafka-topics.sh --create --zookeeper host1:2181,host2:2181,host3:2181 --replication-factor 1 --partitions 1 --topic Request

bin/kafka-topics.sh --create --zookeeper host1:2181,host2:2181,host3:2181 --replication-factor 1 --partitions 1 --topic Response

OBP-API Configuration Edit the OBP-API/src/main/resources/props/default.props so that it contains the following lines. This should be done on each node.

connector=kafka kafka.zookeeper_host=localhost:2181 kafka.request_topic=Request kafka.response_topic=Response

Start the server cd OBP-API mvn jetty:run OBP-JVM Build the package cd OBP-JVM mvn install Run the demo java -jar obp-ri-demo/target/obp-ri-demo-2016.9-SNAPSHOT-jar-with-dependencies.jar&

Here be aware that the name of the jar file might be different, so make sure to use the correct name of the jar file

OBP-Kafka-Python Run from the command line cd OBP-Kafka-Python python server.py

To test the setup, try a request http://localhost:8080/obp/v2.0.0/banks