Starting CDH Services
You need to start and stop services in the right order to make sure everything starts or stops cleanly.
START services in this order:
| Order | Service | Comments | For instructions and more information |
|---|---|---|---|
|
1 |
ZooKeeper |
Cloudera recommends starting ZooKeeper before starting HDFS; this is a requirement in a high-availability (HA) deployment. In any case, always start ZooKeeper before HBase. |
Installing the ZooKeeper Server Package and Starting ZooKeeper on a Single Server; Installing ZooKeeper in a Production Environment; Deploying HDFS High Availability; Configuring High Availability for the JobTracker (MRv1) |
|
2 |
HDFS |
Start HDFS before all other services except ZooKeeper. If you are using HA, see the CDH 5 High Availability Guide for instructions. |
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3 |
HttpFS |
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4a |
MRv1 |
Start MapReduce before Hive or Oozie. Do not start MRv1 if YARN is running. |
Deploying MapReduce v1 (MRv1) on a Cluster; Configuring High Availability for the JobTracker (MRv1) |
|
4b |
YARN |
Start YARN before Hive or Oozie. Do not start YARN if MRv1 is running. |
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5 |
HBase |
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Starting and Stopping HBase; Deploying HBase in a Distributed Cluster |
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6 |
Hive |
Start the Hive metastore before starting HiveServer2 and the Hive console. |
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7 |
Oozie |
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8 |
Flume 1.x |
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9 |
Sqoop |
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10 |
Hue |
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