This is a tutorial about how to create a new eagle application for monitoring cassandra query log step by step.
1. Flow data stream into kafka
Raw Query Log
host:/192.168.6.233|source:/192.168.6.227|user:cassandra|timestamp:1454965365762|category:QUERY|type:CQL_SELECT|ks:dg_keyspace|cf:customer_details|operation:Select id,name,email,contact from customer_details|masked_columns:[email,contact]|other_columns:[id,name]
Parsed Query Log and Flow into Kafka (kafka topic: cassandra_querylog_sandbox)
{ "host": "/192.168.6.227", "source": "/192.168.6.227", "user": "jaspa", "timestamp": 1455574202864, "category": "QUERY", "type": "CQL_SELECT", "ks": "dg_keyspace", "cf": "customer_details", "operation": "CQL_SELECT", "masked_columns": "bank|ccno|email|ip|name|sal|ssn|tel|url", "other_columns": "id|npi" }
2. Startup Eagle Web
3. Create New Monitoring Application
- Site: sandbox
- Application:
- Group: Cassandra
- Name: cassandraQueryLog
- Source Stream:
- Name: cassandraQueryLogStream
- Executor: cassandraQueryLogExecutor
- Schema:
cf | string | query column family |
ks | string | query keyspace |
host | string | the host that current metric comes form |
type | string | query type |
user | string | query user |
category | string | query category |
timestamp | long | query timestamp |
masked_columns | string | query masked_columns |
operation | string | query operation |
other_columns | string | query other_columns |
source | string | source host |
Here is the script for defining the metadata
After successfully loading above metadata, the new application of Cassandra Query Monitoring Application could be found in Eagle Web after refreshing the page as following:
4. Start Monitoring Topology
Create a new topology configuration file named "cassandra-querylog-sandbox.conf" to connect source kafka topic: cassandra_querylog_sandbox as following:
# Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You under the Apache License, Version 2.0 # (the "License"); you may not use this file except in compliance with # the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. { "envContextConfig" : { "env" : "storm", "mode" : "cluster", "topologyName" : "cassandrawQueryLogMonitorTopology", "stormConfigFile" : "cassandraw-querlog-storm.yaml", "parallelismConfig" : { "cassandraQueryLogStream" : 1, "cassandraQueryLogExecutor*" : 1 } }, "dataSourceConfig": { "topic" : "cassandra_querylog_sandbox", "zkConnection" : "sandbox.hortonworks.com:2181", "zkConnectionTimeoutMS" : 15000, "consumerGroupId" : "eagle.consumer", "fetchSize" : 1048586, "deserializerClass" : "org.apache.eagle.datastream.storm.JsonMessageDeserializer", "transactionZKServers" : "sandbox.hortonworks.com", "transactionZKPort" : 2181, "transactionZKRoot" : "/consumers", "transactionStateUpdateMS" : 2000 }, "alertExecutorConfigs" : { "cassandraQueryLogExecutor" : { "parallelism" : 1, "partitioner" : "org.apache.eagle.policy.DefaultPolicyPartitioner" "needValidation" : "true" } }, "eagleProps" : { "site" : "sandbox", "dataSource": "cassandraQueryLog", "dataJoinPollIntervalSec" : 30, "mailHost" : "mailHost.com", "mailSmtpPort":"25", "mailDebug" : "true", "balancePartitionEnabled" : true, #"partitionRefreshIntervalInMin" : 60, #"kafkaStatisticRangeInMin" : 60, "eagleService": { "host": "localhost", "port": 9099, "username": "admin", "password": "secret" } "readHdfsUserCommandPatternFrom" : "file" }, "dynamicConfigSource" : { "enabled" : true, "initDelayMillis" : 0, "delayMillis" : 30000 } }
Start monitoring topology
./bin/kafka-stream-monitor.sh cassandraQueryLogStream cassandraQueryLogExecutor cassandra-querylog-sandbox.conf