[Unit]
Description=Logstash
Requires=elasticsearch.service

[Install]
WantedBy=multi-user.target

[Service]
User=logstash
Group=logstash
WorkingDirectory=/opt/logstash
Restart=always
Type=simple
PIDFile=/var/run/logstash.pid
LimitNOFILE=16384
EnvironmentFile=/etc/default/logstash
ExecStart=/opt/logstash/bin/logstash agent -f /etc/logstash/conf.d -l /var/log/logstash/logstash.log ${LS_OPTS}"
StandardOutput=journal
StandardError=journal