docs/getting-started/logging.rst
On distributions with systemd, ScyllaDB logs are written to the systemd journal <http://www.freedesktop.org/software/systemd/man/systemd-journald.service.html>. You can retrieve log entries with the journalctl <http://www.freedesktop.org/software/systemd/man/journalctl.html> command.
Listed below are a few useful examples.
get logs generated by the "scylla" user:
.. code-block:: shell
journalctl _UID=id -u scylla
get logs generated by the "scylla" command:
.. code-block:: shell
journalctl _COMM=scylla
filter only ScyllaDB logs by priority:
.. code-block:: shell
journalctl _COMM=scylla -p err..emerg
.. code-block:: shell
journalctl _COMM=scylla -p warning
filter only ScyllaDB logs by date:
.. code-block:: shell
journalctl _COMM=scylla --since="2013-3-16 23:59:59"
.. code-block:: shell
journalctl _COMM=scylla --since "2015-01-10" --until "2015-01-11 03:00"`
.. code-block:: shell
journalctl _COMM=scylla --since yesterday
filter only ScyllaDB logs since last server boot:
.. code-block:: shell
journalctl _COMM=scylla -b
On Ubuntu 14.04, ScyllaDB writes its initial boot message into :code:/var/log/upstart/scylla-server.log.
After ScyllaDB has started, logs are stored in :code:/var/log/syslog. ScyllaDB logs can be filter by creating a :code:rsyslog configuration file with the following rule (for example, in :code:/etc/rsyslog.d/10-scylla.conf)
.. code-block:: shell
:syslogtag, startswith, "scylla" /var/log/scylla/scylla.log & ~
And then creating the log file with the correct permissions and restarting the service:
.. code-block:: shell
install -o syslog -g adm -m 0640 /dev/null /var/log/scylla/scylla.log service rsyslog restart
This will send ScyllaDB only logs to :code:/var/log/scylla/scylla.log
Starting from ScyllaDB 1.3, ScyllaDB Docker <https://hub.docker.com/r/scylladb/scylla/>_, you should use :code:docker logs command to access ScyllaDB server logs.
.. include:: /rst_include/advance-index.rst