client.js

const { Database, aql } = require("arangojs");

const db = new Database({
    databaseName: 'got',
});
const Characters = db.collection("characters");

let firstSuccess = false

async function main() {
    try {
        const characters = await db.query(aql`
          FOR character IN ${Characters}
          FILTER character.alive == true
          RETURN character
        `, {count: true});
        if (!firstSuccess) {
            console.log("Success:", characters.count);
            firstSuccess = true
        }
    } catch (err) {
        console.error(err.message);
        firstSuccess = false
    }
}

setInterval(main, 250);

commands.md

SSH tunnel

ssh -l ec2-user <IP> -i ~/.ssh/cegjelzo.pem -L 9000:0.0.0.0:8529

Setup arango

cd /etc/yum.repos.d/
curl -OL https://download.arangodb.com/arangodb34/RPM/arangodb.repo
yum -y install arangodb3-3.4.3
systemctl start arangodb3
systemctl enable arangodb3
vim /etc/arangodb3/arangod.conf
// endpoint = tcp://0.0.0.0:8529
// storage-engine = rocksdb
// authentication = false
// maximal-threads = 2
systemctl restart arangodb3

Upgrade arango

yum -y remove arangodb3-3.4.3-1.0
curl -OL https://download.arangodb.com/arangodb34/RPM/arangodb.repo
yum -y install arangodb3-3.7.11
systemctl stop arangodb3
arangod --database.auto-upgrade true
systemctl start arangodb3
systemctl enable arangodb3

Replication

db._useDatabase("got");
require("@arangodb/replication").setupReplication({ endpoint: "tcp://<IP>:8529", verbose: false, includeSystem: false, incremental: true, autoResync: true });