Linux first look guide

Prerequisites

  • Java 17 or 21

  • A Neo4j cluster meeting these requirements

The query log feature is only available for DBMSs with instances that are running Neo4j 5.1.0 or higher.

Create persistence DBMS

Download and extract

Download latest Neo4j Linux executable from here and extract the package. Extracted directory location is referred to as NEO4J_HOME form now on.

Change password

Navigate to NEO4j_HOME and run:

./bin/neo4j-admin dbms set-initial-password lovelypassword

Run Neo4j

./bin/neo4j start

See Neo4j Linux installation documentation for more details about installing and running Neo4j.

Server installation

Download and unpack NOM server from the package

Download latest NOM server Linux executable from here and extract the package.

   tar -xzf neo4j-ops-manager-server-*-unix.tar.gz

Extracted directory is now known as NOM_SERVER_HOME.

Generate self-signed certificates

Generate server.cer and server.pfx as described here. Use the password applied for the certificate store instead of <PASSWORD> in the next section.

Run NOM server as console application

    java -jar ./lib/server.jar \
        --spring.neo4j.uri=neo4j://localhost:7687\
        --spring.neo4j.authentication.username=neo4j \
        --spring.neo4j.authentication.password=lovelypassword \
        --server.port=8080 \
        --server.ssl.key-store-type=PKCS12 \
        --server.ssl.key-store=file:./certificates/server.pfx \
        --server.ssl.key-store-password=<PASSWORD> \
        --grpc.server.port=9090 \
        --grpc.server.security.key-store-type=PKCS12 \
        --grpc.server.security.key-store=file:./certificates/server.pfx\
        --grpc.server.security.key-store-password=<PASSWORD>

Running as console application on Unix is documented here

Open NOM UI

Wait for the server to start and then go to https://localhost:8080. Login as admin:passw0rd and accept license terms.

Set up agent

Register agent

In NOM UI - navigate to Agent settings (clicking on the sad robot takes you to the correct page) and add a new agent. Copy environment variables that are provided.

Full documentation on registering an agent is here.

Unpack agent

   tar -xzf NEO4J_HOME/products/neo4j-ops-manager-agent-*-linux-amd64.tar.gz

Extracted directory will now be known as NOM_AGENT_HOME.

Configure agent

Edit the export command below as follows:

  • Replace <OUTPUT_FROM_REGISTER_AGENT> with the four lines shown during the reigister agent step in the NOM UI.

  • Replace the bolt URIs, usernames and passwords with the correct ones for your cluster.

  • Remove any instance configurations you don’t need or add configurations if you have more than three instances in your cluster.

export \
<OUTPUT_FROM_REGISTER_AGENT>
CONFIG_TLS_TRUSTED_CERTS=<SERVER_INSTALL_DIR>/certificates/server.cer \
CONFIG_LOG_LEVEL=debug \
CONFIG_INSTANCE_1_NAME=server1 \
CONFIG_INSTANCE_1_BOLT_URI=<SERVER_1_BOLT_URI>  \
CONFIG_INSTANCE_1_BOLT_USERNAME=neo4j \
CONFIG_INSTANCE_1_BOLT_PASSWORD=<SERVER_1_BOLT_PASSWORD> \
CONFIG_INSTANCE_1_QUERY_LOG_PORT=9500 \
CONFIG_INSTANCE_1_LOG_CONFIG_PATH=<SERVER1_HOME_DIR>/conf/server-logs.xml \
CONFIG_INSTANCE_2_NAME=server2 \
CONFIG_INSTANCE_2_BOLT_URI=<SERVER_2_BOLT_URI> \
CONFIG_INSTANCE_2_BOLT_USERNAME=neo4j \
CONFIG_INSTANCE_2_BOLT_PASSWORD=<SERVER_2_BOLT_PASSWORD> \
CONFIG_INSTANCE_2_QUERY_LOG_PORT=9600 \
CONFIG_INSTANCE_2_LOG_CONFIG_PATH=<SERVER2_HOME_DIR>/conf/server-logs.xml \
CONFIG_INSTANCE_3_NAME=server3 \
CONFIG_INSTANCE_3_BOLT_URI<SERVER_3_BOLT_URI> \
CONFIG_INSTANCE_3_BOLT_USERNAME=neo4j \
CONFIG_INSTANCE_3_BOLT_PASSWORD=<SERVER_3_BOLT_PASSWORD> \
CONFIG_INSTANCE_3_QUERY_LOG_PORT=9700 \
CONFIG_INSTANCE_3_LOG_CONFIG_PATH=<SERVER3_HOME_DIR>/conf/server-logs.xml

Run the edited export command.

Full documentation on configuring an agent is here.

Run agent as console application

./bin/agent console

Explore NOM UI

Go to NOM UI and wait for DBMS to appear - this may take a few minutes. You should be able to see that the agent has connected in the agents listing. Once the DBMS is shown in the home page, double-click on the name (initially a generated string) to edit it. Double-click on the DBMS to see the metrics, status, security panel, logs and upgrade pages for the DBMS.