Cypher-shell works remotely but not locally

Neo4j Graph Platform
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1

I'm running 4.1 enterprise using the latest EC2 AMI (ami-0afe90add2767a91c).
When I ssh in, I'm unable to connect using cypher-shell locally:

$ cypher-shell -u neo4j -p -----------
Unable to connect to localhost:7687, ensure the database is running and that there is a working network connection to it.

But I can connect remotely and successfully query via the data browser or using cypher-shell:

$ cypher-shell -a --.--.--.-- -u neo4j -p ------------

So I'm pretty sure that there's a connection and the database is working.

Any suggestions much appreciated.

2

I noticed that the journal indicates:

Bolt enabled on --.--.--.--:7687.

I found that I can indeed connect locally using that address. But I don't see reference to the need to do that in the documentation. Is this something new or related to the AMI?

3

Change the config to

dbms.default_listen_address=0.0.0.0
dbms.connector.bolt.listen_address=:7687

or

dbms.connector.bolt.listen_address=0.0.0.0:7687

When you give a specific IP address the server will bind to only that IP address. By specifying 0.0.0.0, the server will try to bind to all the available network addresses of the server.

1 Like
4

First, thanks @anthapu!

I'm actually having trouble changing the config.

It seems that with a VM one cannot modify neo4j.conf directly, but rather neo4j.template, as shown here: Neo4j Cloud Virtual Machines - Developer Guides.

The template contains this line:

dbms.default_listen_address=$dbms_default_listen_address

Based on the documentation link above, I understand that it should be possible to modify the value of $dbms_default_listen_address by using a VM tag. This is an EC2 instance, so I set the tag per Tag your Amazon EC2 resources - Amazon Elastic Compute Cloud. Specifically, I created a tag with the name "dbms.default_listen_address" and a value of "0.0.0.0".

But even after rebooting, neo4j.conf is being generated as before.

Of course, I could just hard-code "0.0.0.0" into the template. But that would defeat the purpose of a template.

Does anyone know what I have to do to set this VM tag correctly? Or barring that, from where the default value is being set if there is no tag?

5

As per documentation in the link provided I think you need to provide the tag as

dbms_default_listen_address=0.0.0.0

Since that is the value template is looking for

dbms.default_listen_address=$dbms_default_listen_address

where as you are creating tag as

Specifically, I created a tag with the name "dbms.default_listen_address" and a value of "0.0.0.0".

You are using "dbms." change it to "dbms_" and try.

6

Thanks again @anthapu. Yes, you caught an error there. But changing it still doesn't seem to have an impact. I've asked the question also here: NEO4J ENTERPRISE: neo4j.conf gets overwritten - #8 by yyakovson613.