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https://issues.apache.org/jira/browse/WHIRR-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12992925#comment-12992925
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Lars George commented on WHIRR-177:
-----------------------------------
To enable this we need to add the ZooKeeper details to the hbase-site.xml and
start it through the HBase daemon script, for example:
{code}
HBASE_HOME=`ls -d /usr/local/hbase-*`
# HBase configuration (Zookeeper)
cat > $HBASE_HOME/conf/hbase-site.xml <<EOF
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
<property>
<name>hbase.zookeeper.quorum</name>
<value>$ZOOKEEPER_QUORUM</value>
</property>
<property>
<name>zookeeper.session.timeout</name>
<value>60000</value>
</property>
<property>
<name>hbase.zookeeper.property.dataDir</name>
<value>/mnt/hbase/zk</value>
</property>
<property>
<name>hbase.zookeeper.property.maxClientCnxns</name>
<value>100</value>
</property>
</configuration>
EOF
...
mkdir -p /mnt/hbase/logs
mkdir -p /mnt/hbase/zk
...
[ ! -f /etc/hosts ] && echo "127.0.0.1 localhost" > /etc/hosts
...
"$HBASE_HOME"/bin/hbase-daemon.sh start zookeeper
{code}
Obviously we need to make sure not to override any existing hbase-site.xml but
add to it.
> [HBase] Support embedded ZooKeeper
> ----------------------------------
>
> Key: WHIRR-177
> URL: https://issues.apache.org/jira/browse/WHIRR-177
> Project: Whirr
> Issue Type: Improvement
> Components: service/hbase
> Affects Versions: 0.3.0
> Reporter: Lars George
> Assignee: Lars George
> Fix For: 0.4.0
>
>
> This can be achieved like so:
> * Check if there is no "zk" role in the template -> set HBaseManagesZK = true
> * Emit a zoo.cfg from the HBase post-configure script next to the
> hbase-site.xml
> * Set the option in hbase-env.sh to indicate that HBase manages ZK:
> {code}HBASE_MANAGES_ZK=true{code}
> Question is how many nodes run ZK? All slaves? A subset?
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