How to start Neo4j on Azure

I'm running Neo4j v4.x on an Azure VM (Linux Ubunto 16.04). Everything was running fine until my project required a resizing for more storage. This seemingly went well as I proceeded to load data, but then a glitch of unknown type caused the Neo4j server to stop. I could no longer access it from the Neo4j broweser or from python code that queries it. I've restarted the VM. No effect. Even redeployed the VM without effect. From Putty: neo4j status Neo4j is not running I've tried numerous commands, but this one comes closest to trying to do something: sudo ssh {myusername}@{vm ip} "systemctl restart neo4j V4_0.service" It asked for my password and accepted it (rejected errors) and then gave me > Failed to restart neo4j.service: Interactive authentication required. See system logs and 'systemctl status neo4j.service' for details. Failed to restart V4_0.service: Interactive authentication required. See system logs and 'systemctl status V4_0.service' for details. I thought I'd authenicated. In debugging, i tried entering bad username or password and was immediately rejected as expected. Another set of info generated by the command root@neo4jVM:/etc/init.d# neo4j start result: > Directories in use: home: /var/lib/neo4j config: /etc/neo4j logs: /var/log/neo4j plugins: /var/lib/neo4 j/plugins import: /var/lib/neo4j/import data: /var/lib/neo4j/data certificates: /var/lib/neo4j/certificates run: /var/run/neo4j Starting Neo4j. WARNING: Max 1024 open files allowed,minimum of 40000 recommended. See the Neo4j manual. Started neo4j (pid> 71995). It is available at http://0.0.0.0:7474/ There may be a shortdelay until the server is ready. See /var/log/neo4j/neo4j.log for current status. Despite the promising message, it never started and Http://0.0.0.0:7474 did not connect. for clarification, I tried variations on the one command in Putty: sudo ssh dastumpf@104.43.228.191 "systemctl restart neo4j" sudo ssh dastumpf@104.43.228.191 "systemctl restart neo4j.service" etc. Exploring the Neo4j log, I found this ....LifecycleManagingDatabaseService@78116659' was successfully initialized, but failed to start. What am I missing?