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Bigdata, Semantic IoT, Hadoop, NoSQL

Bigdata, Hadoop ecosystem, Semantic IoT등의 프로젝트를 진행중에 습득한 내용을 정리하는 곳입니다.
필요한 분을 위해서 공개하고 있습니다. 문의사항은 gooper@gooper.com로 메일을 보내주세요.


1. 로그를 받을 agent설정 파일(flume-conf.properties)

agent.sources = avroGenSrc
agent.channels = memoryChannel
agent.sinks = fileSink

# For each one of the sources, the type is defined
agent.sources.avroGenSrc.type = avro
agent.sources.avroGenSrc.bind = localhost
agent.sources.avroGenSrc.port = 3333

# The channel can be defined as follows.
agent.sources.avroGenSrc.channels = memoryChannel

# Each sink's type must be defined
agent.sinks.fileSink.type = file_roll
agent.sinks.fileSink.sink.directory=/home/hadoop/saved_data
agent.sinks.fileSink.sink.rollInterval = 10
agent.sinks.fileSink.sink.batchSize = 10

#Specify the channel the sink should use
agent.sinks.fileSink.channel = memoryChannel

# Each channel's type is defined.
agent.channels.memoryChannel.type = memory

# Other config values specific to each type of channel(sink or source)
# can be defined as well
# In this case, it specifies the capacity of the memory channel
agent.channels.memoryChannel.capacity = 10000
agent.channels.memoryChannel.transctionCapacity = 10000


2. 로그를 전송하는 agent(flume-conf-agent01.properties)


agent01.sources = execGenSrc
agent01.channels = memoryChannel
agent01.sinks = avroSink

# For each one of the sources, the type is defined
agent01.sources.execGenSrc.type = exec
agent01.sources.execGenSrc.command = tail -f /home/hadoop/log_data/log1.log
agent01.sources.execGenSrc.batchSize = 10

# The channel can be defined as follows.
agent01.sources.execGenSrc.channels = memoryChannel

# Each sink's type must be defined
agent01.sinks.avroSink.type = avro
agent01.sinks.avroSink.hostname=localhost
agent01.sinks.avroSink.port=3333
agent01.sinks.avroSink.batch-size = 10

#Specify the channel the sink should use
agent01.sinks.avroSink.channel = memoryChannel

# Each channel's type is defined.
agent01.channels.memoryChannel.type = memory

# Other config values specific to each type of channel(sink or source)
# can be defined as well
# In this case, it specifies the capacity of the memory channel
agent01.channels.memoryChannel.capacity = 10000
agent01.channels.memoryChannel.transctionCapacity = 10000


3. log를 받을 폴더 생성및 전송할 데이타 생성

   가. 받을 폴더 : mkdir /home/hadoop/flume/saved_data

   나. 보낼 폴더 : mkdir /home/hadoop/flume/log_data

   다. 보낼파일 :  touch /home/hadoop/flume/log1.log

   라. 폴더로 이동 : cd /home/hadoop/flume

   마. log1.log에 간단하게 로그 추가 : echo "aaaaabbbbbcccc" >> log1.log

 

4. agent실행

  가. 로그를 받을 agent : flume-ng agent --conf-file ./conf/flume-conf.properties --name agent

  나. 로그를 전송할 agent : flume-ng agent --conf-file ./conf/flume-conf-agent01.properties --name agent01

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40 [Kudu]ERROR: Unable to advance iterator for node with id '2' for Kudu table 'impala::core.pm0_abdasubjct': Network error: recv error from unknown peer: Transport endpoint is not connected (error 107) gooper 2023.03.16 536
39 Hadoop Clsuter에 이미 포함된 host의 hostname변경시 처리 절차 gooper 2023.03.24 14
38 [KUDU] kudu tablet server여러가지 원인에 의해서 corrupted상태가 된 경우 복구방법 gooper 2023.03.28 37
37 [DataNode]org.apache.hadoop.security.KerberosAuthException: failure to login: for principal: hdfs/datanode03@GOOPER.COM from keytab hdfs.keytab오류 gooper 2023.04.18 4512
36 [Ranger]계정에 admin권한(grant, create등)의 권한 부여 방법 gooper 2023.04.18 49
35 [Atlas Server]org.apache.hadoop.hbase.security.AccessDeniedException: Insufficient permissions (user=atlas/node01.gooper.com@GOOPER.COM, scope=default:atlas_janus, params=[table=default:atlas_janus,], action-CREATE)] gooper 2023.05.15 66
34 Impala Admission Control 설정시 쿼리가 사용하는 메모리 사용량 판단 방법 gooper 2023.05.19 93
33 [impala]insert into db명.table명 select a, b from db명.table명 쿼리 수행시 "Memory limit exceeded: Failed to allocate memory for Parquet page index"오류 조치 방법 gooper 2023.05.31 22
32 [CDP7.1.3]Ranger WebUI에서 Error! Connection refused: Please check the KMS provider URL and whether the Ranager KMS is running발생시 조치 방법 gooper 2023.06.07 19
31 [Ranger]RangerAdminRESTClient Error gertting pplicies; Received NULL response!!, secureMode=true, user=rangerkms/node01.gooper.com@ GOOPER.COM (auth:KERBEROS), serviceName=cm_kms gooper 2023.06.27 24
30 [KTS Cluster의 Key Trustee Server]self-signed 인증서 발급및 설정 방법 gooper 2023.06.27 29
29 [Hadoop Encryption] Encryption Zone 생성/설정시 User:hadoop not allowed to do 'DECRYPT_EEK' ON 'testkey' 오류 발생 조치 사항 gooper 2023.06.28 18
28 [HDFS]Encryption Zone에 생성된 테이블 조회시 Failed to open HDFS file hdfs://nameservice1/tmp/zone1/sec_test_file.txt Error(255): Unknown error 255 Root cause: AuthorizationException: User:impala not allowd to do 'DECRYPT_EEK' on 'testkey' gooper 2023.06.29 53
27 [EncryptionZone]User:testuser not allowed to do "DECRYPT_EEK" on 'testkey' gooper 2023.06.29 11
26 [Encryption Zone]Encryption Zone에 생성된 table을 select할때 HDFS /tmp/zone1에 대한 권한이 없는 경우 gooper 2023.06.29 12
25 [CDP7.1.6,HDFS]HDFS파일을 삭제하고 Trash비움이 완료된후에도 HDFS 공간을 차지하고 있는 경우 확인/조치 방법 gooper 2023.07.17 16
24 oozie의 sqoop action수행시 ooize:launcher의 applicationId를 이용하여 oozie:action의 applicationId및 관련 로그를 찾는 방법 gooper 2023.07.26 10
23 [Hue admin]Add/Sync LDAP user, Sync LDAP users/groups 버튼 기능 설명 gooper 2023.08.09 15
22 [Hue metadata]Oracle에 있는 Hue 메타정보 테이블을 이용하여 coordinator와 workflow관계 목록을 추출하는 방법 gooper 2023.08.22 15
21 [Impala jdbc]CDP7.1.7환경에서 java프로그램을 이용하여 kerberized impala cluster에 접근하여 SQL을 수행하는 방법 gooper 2023.08.22 58

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