Stopping a DataStax Enterprise node
Stopping DataStax Enterprise on a node.
To speed up the restart process, before stopping the dse service, run nodetool drain. This step writes the current memtables to disk. When you restart the node, Cassandra does not need to read through the commit log. If you have durable writes set to false, which is unlikely, there is no commit log and you must drain the node to prevent losing data.
To stop DataStax Enterprise running as a
service:
nodetool drain
sudo service dse stop
To stop DataStax Enterprise running as a stand-alone process:
Running nodetool drain before using the cassandra-stop command to
stop a stand-alone process is not necessary because the
cassandra-stop command drains the node before stopping it.
From the installation
location:
bin/dse cassandra-stop ## Use sudo if needed
In the unlikely event that the cassandra-stop command fails because it cannot find
the process DataStax Enterprise Java process ID (PID), the output instructs you to
find the DataStax Enterprise Java process ID (PID) manually, and stop the process
using its PID
number.
ps auwx | grep dse bin/dse cassandra-stop -p PID ## Use sudo if needed
Note: If you have trouble, see Troubleshooting DataStax
Enterprise.