If you want to add multiple config files, use the pipelines.
Edit pipelines.yml and add the path to configs there e.g.
- pipeline.id: web_log_pipelined queue.type: persisted path.config: "/etc/logstash.d/web.conf" - pipeline.id: log2 queue.type: persisted path.config: "/etc/logstash.d/otherlog.conf" - pipeline.id: log3 queue.type: persisted path.config: "/etc/logstash.d/errors.conf" ...
Now you need to start logstash without any arguments, simply execute logstash, just make sure you are pointing to the right config. You can use LS_SETTINGS_DIR env variable to point to the config directory.
LS_SETTINGS_DIR=/etc/logstash.d/ logstash
Example systemd service file:
# /etc/systemd/system/logstash.service
[Unit]
Description=Massage various logs and forward them to opensearch/elasticsearch
After=network.target
[Service]
Type=simple
ExecStart=/usr/local/bin/logstash
Environment="HOSTNAME={{ hostname }}"
Environment="LS_SETTINGS_DIR=/etc/logstash.d/"
Restart=on-failure
[Install]
WantedBy=multi-user.target