How to restore an instance in Accumulo 1.7.0? - hdfs

Question

I configured Accumulo 1.7.0 with Hadoop 2.6.0 (HDFS) and Zookeeper 3.4.6, all works good, but i want to know how to restore an instance.
Thanks !!!
UPDATE
The problem is that i want to recover the instance after restart the PC or stop all processes. I put the log for better understanding:
hduser#master:/opt/accumulo-1.7.0-bin/bin$ ./start-all.sh
Starting monitor on localhost
WARN : Max open files on localhost is 1024, recommend 32768
Starting tablet servers .... done
Starting tablet server on localhost
WARN : Max open files on localhost is 1024, recommend 32768
2016-02-23 11:46:46,089 [fs.VolumeManagerImpl] WARN : dfs.datanode.synconclose set to false in hdfs-site.xml: data loss is possible on hard system reset or power loss
2016-02-23 11:46:46,092 [server.Accumulo] INFO : Attempting to talk to zookeeper
2016-02-23 11:46:46,242 [server.Accumulo] INFO : Waiting for accumulo to be initialized
2016-02-23 11:46:47,243 [server.Accumulo] INFO : Waiting for accumulo to be initialized
2016-02-23 11:46:48,246 [server.Accumulo] INFO : Waiting for accumulo to be initialized
and
hduser#master:/opt/accumulo-1.7.0-bin/bin$ ./accumulo init
2016-02-22 16:10:46,410 [fs.VolumeManagerImpl] WARN : dfs.datanode.synconclose set to false in hdfs-site.xml: data loss is possible on hard system reset or power loss
2016-02-22 16:10:46,411 [init.Initialize] INFO : Hadoop Filesystem is hdfs://master:9000
2016-02-22 16:10:46,412 [init.Initialize] INFO : Accumulo data dirs are [hdfs://master:9000/accumulo]
2016-02-22 16:10:46,412 [init.Initialize] INFO : Zookeeper server is localhost:2181
2016-02-22 16:10:46,412 [init.Initialize] INFO : Checking if Zookeeper is available. If this hangs, then you need to make sure zookeeper is running
2016-02-22 16:10:46,606 [init.Initialize] ERROR: FATAL It appears the directories [hdfs://master:9000/accumulo] were previously initialized.
2016-02-22 16:10:46,606 [init.Initialize] ERROR: FATAL: Change the property instance.volumes to use different filesystems,
2016-02-22 16:10:46,606 [init.Initialize] ERROR: FATAL: or change the property instance.dfs.dir to use a different directory.
2016-02-22 16:10:46,606 [init.Initialize] ERROR: FATAL: The current value of instance.dfs.uri is ||
2016-02-22 16:10:46,606 [init.Initialize] ERROR: FATAL: The current value of instance.dfs.dir is |/accumulo|
2016-02-22 16:10:46,606 [init.Initialize] ERROR: FATAL: The current value of instance.volumes is |hdfs://master:9000/accumulo|

Answer 1

It should be as simple as going into the bin directory and running the appropriate labeled script.
cd accumulo-1.7.0/bin
./stop-all.sh
Then to start again:
./start-all.sh

Answer 2

Thanks for the help, the problem was that i need set the directory where the snapshot is stored for zookeeper, because by default it is stored in "/tmp". I modify file zoo.cfg and set a new directory for "dataDir".