pgadmin4/web/servers.json

{
    "Servers": {
        "1": {
            "Name": "OpenStack PEM Server",
            "Group": "Servers",
            "Host": "172.16.253.234",
            "Port": 5432,
            "MaintenanceDB": "postgres",
            "Username": "postgres",
            "SSLMode": "prefer",
            "SSLCompression": 1,
            "BGColor": "#ffffff",
            "FGColor": "#000000",
            "Timeout": 0,
            "UseSSHTunnel": 0,
            "TunnelPort": "22",
            "TunnelAuthentication": 0
        }
    }
}