Quack will not start - Connection problem with mongodb - Started mongodb using systemctl

[bobbeck55]

I installed mongodb v6 and was able to start it up and use the mongosh.
Now I am attempting to bring up quack using the steps in your quack repo README.md file
How to run on a standalone server.

Installed NGINX and add conf/quack.conf to /etc/nginx/quack.conf
Run mongo - sudo systemctl start mongod > mongod.log
Run quack - ava -Xbootclasspath/a:/etc/quack -jar quack/assembly/target/lib/jetty-runner.jar quack/assembly/target/q
uack.war > quack.log.txt 2>&1

There is a connection problem in the quack log.
2023-03-02 10:30:37,152 [scription='null'}-mongod:27017] INFO cluster - Exception
in monitor thread while connecting to server mongod:27017
com.mongodb.MongoSocketException: mongod: Temporary failure in name resolution'

The config and log files are attached.
mongod.cmdline.txt
mongod.conf.txt
mongod.log.txt
nginx.conf.txt
quack.conf.txt
quack.log.txt
quack.properties.txt
quack_cmdline.txt

[bobbeck55]

When I added "mongo.uri=mongodb://localhost:27017/dbname"
to the quack.properties file, quack was able to connect with mongodb.