The logging system components include Fluentd, Elasticsearch, and Kibana. If required, you can restart these components.
To restart Fluentd
The Fluentd process that is responsible for collecting logs is td-agent
(Treasure Data Agent). The td-agent process starts automatically when the
fluentd Salt state is applied. To manually start and stop it, use the Salt
commands.
The following example shows how to restart the td-agent process from the
Salt Master node on all Salt Minion nodes with names that start with ctl:
# salt 'ctl*' service.restart td-agent
Alternatively, SSH to the node and use the service manager (systemd or upstart) to restart the service. For example:
# ssh ctl01.mcp-lab-advanced.local
# service td-agent restart
See the salt.modules.service documentation for more information on how to use the Salt service execution module.
To restart Elasticsearch
Run the following command from the Salt Master node:
# salt 'log*' service.restart elasticsearch
To restart Kibana
Run the following command from the Salt Master node:
# salt 'log*' service.restart kibana