Backup-like feature implemented using consul. cdnhealth.json and webservice.json is on all CDN members which are not backup and backup_webservice.json is on the backup(s)

backup_webservice.json

{
    "services": [
    {   "id": "webservice-backup",
        "name": "webservice",
        "tags": ["backup"],
        "port": 80,
        "checks": [{
            "name": "DNS check ",
            "script": "/usr/lib64/nagios/plugins/negate -s /usr/lib64/nagios/plugins/check_dns -H cdnhealth.service.cdn.example.com.",
            "interval": "5s",
            "timeout": "1s"
        },
        {
            "name": "HTTP on port 80",
            "http": "http://localhost:80/",
            "interval": "5s",
            "timeout": "1s"
        }]
    }]
}

cdnhealth.json

{
    "service": {
        "name": "cdnhealth",
        "tags": ["cdn01"],
        "port": 80,
        "checks": [{
            "name": "HTTP on port 80",
            "http": "http://localhost:80/",
            "interval": "5s",
            "timeout": "1s"
        }]
    }
}

webservice.json

{
    "service": {
        "name": "webservice",
        "tags": ["cdn01"],
        "port": 80,
        "checks": [{
            "name": "HTTP on port 80",
            "http": "http://localhost:80/",
            "interval": "5s",
            "timeout": "1s"
        }]
    }
}