Ubuntu 22.04にNeo4jグラフデータベースをインストールして構成する方法

$ curl -fsSL https://debian.neo4j.com/neotechnology.gpg.key | sudo gpg --dearmor -o /usr/share/keyrings/neo4j.gpg

$ echo "deb [signed-by=/usr/share/keyrings/neo4j.gpg] https://debian.neo4j.com stable latest" | sudo tee -a /etc/apt/sources.list.d/neo4j.list

$ echo "deb [signed-by=/usr/share/keyrings/neo4j.gpg] https://debian.neo4j.com stable 5" | sudo tee -a /etc/apt/sources.list.d/neo4j.list

$ sudo apt update

$ apt list -a neo4j
Listing... Done
neo4j/stable 1:5.3.0 all
neo4j/stable 1:5.2.0 all
neo4j/stable 1:5.1.0 all

$ sudo apt install neo4j

$ sudo apt install neo4j=1:5.3.0

$ sudo systemctl enable neo4j

$ sudo systemctl start neo4j

$ sudo systemctl status neo4j
? neo4j.service - Neo4j Graph Database
     Loaded: loaded (/lib/systemd/system/neo4j.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2023-01-21 20:50:52 UTC; 33s ago
   Main PID: 5241 (java)
      Tasks: 72 (limit: 1030)
     Memory: 399.3M
        CPU: 20.350s
     CGroup: /system.slice/neo4j.service

$ cypher-shell

username: neo4j
password:
Password change required
new password:
confirm password:
Connected to Neo4j using Bolt protocol version 5.0 at neo4j://localhost:7687 as user neo4j.
Type :help for a list of available commands or :exit to exit the shell.
Note that Cypher queries must end with a semicolon.
neo4j@neo4j>

neo4j@neo4j> :exit

Bye!

$ sudo nano /etc/neo4j/neo4j.conf

. . .
#***************************************************************
# ネットワークコネクタの構成
#***************************************************************

# デフォルトの構成では、Neo4jはローカル接続のみを受け入れます。
# 非ローカル接続を受け入れるには、この行のコメントを解除します:
server.default_listen_address=0.0.0.0
. . .

2001:db8::1 your_hostname

$ cypher-shell -a 'neo4j://your_hostname:7687'

$ cypher-shell -a 'neo4j://ip6-localhost:7687'

$ sudo ufw allow from 203.0.113.1 to any port 7687 proto tcp

$ sudo ufw allow from 192.0.2.0/24 to any port 7687 proto tcp

$ sudo ufw allow from 2001:DB8::1/128 to any port 7687 proto tcp

$ ufw allow from 192.0.2.0/24 to any port 7687 proto tcp

$ sudo ufw reload

$ sudo ufw status
Status: active

To                         Action      From
--                         ------      ----
22/tcp                     ALLOW       Anywhere
22/tcp (v6)                ALLOW       Anywhere (v6)
7687/tcp                   ALLOW       203.0.113.1

$ cypher-shell

$ cypher-shell -a 'neo4j://203.0.113.1:7687'

$ cypher-shell -a 'neo4j://your_hostname:7687'

neo4j@neo4j> CREATE (:Slite {name: 'Navjot Singh'});

0 rows
ready to start consuming query after 124 ms, results consumed after another 0 ms
Added 1 nodes, Set 1 properties, Added 1 labels

neo4j@neo4j> CREATE
             (:Slite {name: 'Sammy'})-[:COLLEAGUE]->
             (:Slite {name: 'Peter Jack'})-[:COLLEAGUE]->
             (:Slite {name: 'Chris Rock'});

0 rows
ready to start consuming query after 72 ms, results consumed after another 0 ms
Added 3 nodes, Created 2 relationships, Set 3 properties, Added 3 labels

neo4j@neo4j> MATCH (a:Slite),(b:Slite)
             WHERE a.name = 'Peter Jack' AND b.name = 'Chris Rock'
             CREATE (a)-[r:DEPARTMENT { name: 'Designers' }]->(b)
             RETURN type(r), r.name;
+----------------------------+
| type(r)      | r.name      |
+----------------------------+
| "DEPARTMENT" | "Designers" |
+----------------------------+

1 row
ready to start consuming query after 60 ms, results consumed after another 17 ms
Created 1 relationships, Set 1 properties

neo4j@neo4j> MATCH (a:Slite), (b:Slite)
             WHERE a.name = 'Peter Jack' AND b.name = 'Sammy'                                                                        CREATE (a)-[r:PROJECT { name: 'Test Project 1' }]->(b)                                                                  RETURN type(r), r.name;
+------------------------------+
| type(r)   | r.name           |
+------------------------------+
| "PROJECT" | "Test Project 1" |
+------------------------------+

1 row
ready to start consuming query after 132 ms, results consumed after another 12 ms
Created 1 relationships, Set 1 properties

neo4j@neo4j> MATCH (a)-[r]->(b)
             RETURN a.name,r,b.name
             ORDER BY r;
+-------------------------------------------------------------------+
| a.name       | r                                   | b.name       |
+-------------------------------------------------------------------+
| "Sammy"      | [:COLLEAGUE]                        | "Peter Jack" |
| "Peter Jack" | [:COLLEAGUE]                        | "Chris Rock" |
| "Peter Jack" | [:DEPARTMENT {name: "Designers"}]   | "Chris Rock" |
| "Peter Jack" | [:PROJECT {name: "Test Project 1"}] | "Sammy"      |
+-------------------------------------------------------------------+

4 rows
ready to start consuming query after 99 ms, results consumed after another 5 ms