# Change ATSD Data Directory

Grant ownership of the new data directory to the axibase user.

sudo chown -R axibase:axibase /path/to/data-dir

Switch to axibase user.

su axibase

Stop ATSD.

/opt/atsd/bin/atsd-all.sh stop

Copy data to the new target directory.

cp -a /opt/atsd/hdfs-data/ /path/to/data-dir/

cp -a /opt/atsd/hdfs-data-name/ /path/to/data-dir/

cp -a /opt/atsd/hdfs-cache/ /path/to/data-dir/

Backup the old directories.

mkdir /opt/atsd/old

mv /opt/atsd/hdfs* /opt/atsd/old/

Backup the configuration files.

cp /opt/atsd/hadoop/conf/hdfs-site.xml /opt/atsd/hadoop/conf/hdfs-site.xml.backup

cp /opt/atsd/hadoop/conf/core-site.xml /opt/atsd/hadoop/conf/core-site.xml.backup

Open the /opt/atsd/hadoop/conf/hdfs-site.xml file.

Set dfs.name.dir property to /path/to/data-dir/hdfs-data-name.

Set dfs.data.dir to /path/to/data-dir/hdfs-data.

<property>
    <name>dfs.name.dir</name>
    <value>/path/to/data-dir/hdfs-data-name</value>
</property>
<property>
    <name>dfs.data.dir</name>
    <value>/path/to/data-dir/hdfs-data</value>
</property>

Open the /opt/atsd/hadoop/conf/core-site.xml file.

Set the hadoop.tmp.dir property to /path/to/data-dir/hdfs-cache.

<property>
    <name>hadoop.tmp.dir</name>
    <value>/path/to/data-dir/hdfs-cache</value>
    <description>A base for other temporary directories.</description>
</property>

Start ATSD services.

/opt/atsd/bin/atsd-all.sh start

Verify that all old data is available and that any expected new data is incoming.

Delete the old data and configuration files.

rm -r /opt/atsd/old

rm /opt/atsd/hadoop/conf/core-site.xml.backup

rm /opt/atsd/hadoop/conf/hdfs-site.xml.backup