There are a lot of log entries generated by mapnik rendering on the maps host syslog causing a lot of noise.
Aug 19 15:19:46 maps2005 kartotherian[33648]: Mapnik LOG> 2021-08-19 15:19:46: Marker does not exist: /srv/deployment/kartotherian/deploy-cache/revs/0ea1846b556430e4aa92c80d9e72328906a3c53e/node_modules/@kartotherian/osm-bright-style/shield/default-0.svg Aug 19 15:19:46 maps2005 kartotherian[33648]: Mapnik LOG> 2021-08-19 15:19:46: Marker does not exist: /srv/deployment/kartotherian/deploy-cache/revs/0ea1846b556430e4aa92c80d9e72328906a3c53e/node_modules/@kartotherian/osm-bright-style/shield/default-0.svg Aug 19 15:19:46 maps2005 kartotherian[33648]: Mapnik LOG> 2021-08-19 15:19:46: Marker does not exist: /srv/deployment/kartotherian/deploy-cache/revs/0ea1846b556430e4aa92c80d9e72328906a3c53e/node_modules/@kartotherian/osm-bright-style/shield/default-0.svg Aug 19 15:19:46 maps2005 kartotherian[33648]: Mapnik LOG> 2021-08-19 15:19:46: Marker does not exist: /srv/deployment/kartotherian/deploy-cache/revs/0ea1846b556430e4aa92c80d9e72328906a3c53e/node_modules/@kartotherian/osm-bright-style/shield/default-0.svg Aug 19 15:19:46 maps2005 kartotherian[33648]: Mapnik LOG> 2021-08-19 15:19:46: Marker does not exist: /srv/deployment/kartotherian/deploy-cache/revs/0ea1846b556430e4aa92c80d9e72328906a3c53e/node_modules/@kartotherian/osm-bright-style/shield/default-0.svg Aug 19 15:19:46 maps2005 kartotherian[33648]: Mapnik LOG> 2021-08-19 15:19:46: Marker does not exist: /srv/deployment/kartotherian/deploy-cache/revs/0ea1846b556430e4aa92c80d9e72328906a3c53e/node_modules/@kartotherian/osm-bright-style/shield/default-0.svg
We should make sure to either fix the issue or filter the log entries to avoid flooding syslog.