There are things in presto configuration which can be set differently on each node.

For example node.id in node.properties or node.internal-adress in config.properites.

The idea is to support template configuration where user could use some variables which will be resolved on target node. Let say we would have a defined set of variables like:

• uuid - generates new uuid
• current_node - a hostname (or ip address) used topology file for current node
• coordinator - a hostname of coordinator node defined in topology file

then in configuration files user could have:

• for config.properties:

http-server.http.port=28384
query.max-memory=50GB
query.max-memory-per-node=512MB
discovery.uri=http://${coordinator}:28384
coordinator=false
node.internal-address=${current_node}

• for node.properties

node.id=${uuid}
catalog.config-dir=/etc/presto/catalog
node.data-dir=/var/lib/presto/data
node.environment=presto
node.launcher-log-file=/var/log/presto/launcher.log
node.server-log-file=/var/log/presto/server.log
plugin.dir=/usr/lib/presto/lib/plugin

@cawallin @rschlussel What do you think?