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86 lines
1.4 KiB
Plaintext
86 lines
1.4 KiB
Plaintext
# based on sequenceiq/hadoop-docker
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## Create a hadoop cluster in swarm mode
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`--hostname` needs 1.13 or higher
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```
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docker service create \
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--name hadoop-master \
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--network swarm-net \
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--hostname hadoop-master \
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--replicas 1 \
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--endpoint-mode dnsrr \
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newnius/hadoop
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```
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```
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docker service create \
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--name hadoop-slave1 \
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--network swarm-net \
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--hostname hadoop-slave1 \
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--replicas 1 \
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--endpoint-mode dnsrr \
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newnius/hadoop
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```
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```
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docker service create \
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--name hadoop-slave2 \
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--network swarm-net \
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--hostname hadoop-slave2 \
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--replicas 1 \
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--endpoint-mode dnsrr \
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newnius/hadoop
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```
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```
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docker service create \
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--name hadoop-slave3 \
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--network swarm-net \
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--hostname hadoop-slave3 \
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--replicas 1 \
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--endpoint-mode dnsrr \
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newnius/hadoop
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```
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## Init && Test
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In the first deploy, format dfs first
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### stop cluster (in master)
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`sbin/stop-yarn.sh`
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`sbin/stop-dfs.sh`
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### remove previous data (in all nodes)
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clear all data in /tmp in all nodes
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### format hdfs (in master)
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```
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bin/hadoop namenode -format
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```
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### start cluster (in master)
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`sbin/start-dfs.sh`
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`sbin/start-yarn.sh`
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### Run a test job
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bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.1.jar grep input output 'dfs[a-z.]+'
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Note: there is no such dir default, you can add data by
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```
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bin/hadoop dfs -mkdir -p /user/root/input
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```
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and
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```
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bin/hadoop dfs -put etc/hadoop/* /user/root/input
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```
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### monitor cluster in browser
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YARN: hadoop-master:8088
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HDFS: hadoop-master:50070
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