You have to make sure access to the services network is allowed by the cf security groups. In the integrations specs this is done here. @Gangabhavani if you get it to work could you adapt the documentation from here to the cf-services-contrib repo and make a PR for it?
rkoster
commented
9 years ago
Hi, I have a running Bosh-lite cloud-foundry-instance.To test services,I have written a sample python application to connect to redis service, which has been created as said in the link. https://github.com/cloudfoundry-community/cf-services-contrib-release
my sample application(testredis) looks like
Get Redis credentials
if 'VCAP_SERVICES' in os.environ: services = json.loads(os.environ['VCAP_SERVICES'])['redis-2.6'][0] redis_env = services['credentials'] print redis_env else: redis_env = dict(hostname='localhost', port=6379, password='') myredis_host = redis_env['hostname'] myredis_port = int(redis_env['port']) myredis_pwd = redis_env['password'] myredis_env = dict(host=myredis_host, port=myredis_port, password=myredis_pwd) print myredis_env
Connect to redis
try: r = redis.Redis(myredis_env) r.info() except redis.ConnectionError as erdesc: r = None print "Not connected to Redis... " , erdesc @app.route('/') def keys(): if r: current_hits = r.incr('hits') return 'Hits: {}\n'.format(current_hits) + 'Available Keys: ' + str(r.keys()) else: return 'No Redis connection available!' @app.route('/')
def get_current_values(key):
if r:
current_values = r.lrange(key, 0, -1)
return str(current_values)
else:
abort(503)
@app.route('// name == 'main**':
') def add_value(key, s): if r: r.rpush(key, s) return 'Added {} to {}.'.format(s, key) else: abort(503) ifRun the app, listening on all IPs with our chosen port number
app.run(host='0.0.0.0', port=port)
The application manifest contains the binding details of redis instance like
applications:
name: testredis
memory: 128MB
disk_quota: 256MB
random-route: true
command: python main.py
services:
The application has binded successfully with redis and got the details as follows
name service plan bound apps last operation
mymongo mongodb default create succeeded
mypgsql postgresql default create succeeded
myredis redis default testredis2, testredis create succeeded
System-Provided: { "VCAP_SERVICES": { "redis-2.6": [ { "credentials": { "host": "10.244.1.94", "hostname": "10.244.1.94", "name": "7715b1bc-4d0c-46ae-9159-9016a0dd6756", "password": "f6aa70e6-2b7b-42bd-8e54-0f7629fbfb89", "port": 5000 }, "label": "redis-2.6", "name": "myredis", "plan": "default", "tags": [ "key-value", "nosql" ] } ] } }
{ "VCAP_APPLICATION": { "application_id": "413e5e12-1fdc-4ecb-b86b-a33d61ca9115", "application_name": "testredis2", "application_uris": [ "testredis2-unpenetrant-urease.10.244.0.34.xip.io" ], "application_version": "d297bf90-bd11-4e57-bbb5-e9be76778d61", "limits": { "disk": 256, "fds": 16384, "mem": 128 }, "name": "testredis2", "space_id": "8e39e3e3-12b7-48de-ae89-5d7af39fd77b", "space_name": "cfspace", "uris": [ "testredis2-unpenetrant-urease.10.244.0.34.xip.io" ], "users": null, "version": "d297bf90-bd11-4e57-bbb5-e9be76778d61" } }
No user-defined env variables have been set
No running env variables have been set
No staging env variables have been set
The application is running successfully but not connected to redis instance from DEA.
Getting error in app logs like connection refused to redis.
What could be the problem?