Have a Device in Admin-Horrormode:
generic_x86_64
HOST OS VERSION: balenaOS 2.83.18+rev1
SUPERVISOR VERSION: 12.10.3
It is lost by dashboard, but running. I’d like to know how to get it back 
What is working:
- Logs
- All Services (according to logs)
- Console for Host-OS (but trying with balena-engine stats or ps makes it crash every time)
- Online Status Indicator (shows “online” and “heartbeat only” when hostOS console crashes for a short while)
- NTP-Sync
What is not working:
- All actions from Dashboard (Restart/Stop Services, Update Supervisor, Update to new Release)
- Device Status (CPU/Memory/Temperature/Storage) didn’t moved for hours (CPU@93%)
Device health checks:
all green but
Some networking issues detected:
test_upstream_dns: DNS lookup failed for 0.resinio.pool.ntp.org via upstream: 8.8.8.8
test_upstream_dns: DNS lookup failed for api.balena-cloud.com via upstream: 8.8.8.8
Sometimes also:
test_balena_registry: Could not communicate with registry2.balena-cloud.com for authentication
But:
root@f1e23ab:~# nslookup api.balena-cloud.com
Server: 127.0.0.2
Address 1: 127.0.0.2 f1e23ab
Name: api.balena-cloud.com
Address 1: 52.73.205.134 ec2-52-73-205-134.compute-1.amazonaws.com
...
Address 9: 2600:1f18:6600:7f00:28b6:a5e0:57b6:8a01
...
root@f1e23ab:~# nslookup 0.resinio.pool.ntp.org
Server: 127.0.0.2
Address 1: 127.0.0.2 f1e23ab
Name: 0.resinio.pool.ntp.org
Address 1: 162.159.200.1 time.cloudflare.com
Address 2: 136.243.202.118 time01.nevondo.com
Address 3: 78.46.204.247 nono.com
Address 4: 217.91.44.17 www.kashra.com
and
root@f1e23ab:~# curl -kv https://registry2.balena-cloud.com
* Trying 35.174.239.192:443...
* Connected to registry2.balena-cloud.com (35.174.239.192) port 443 (#0)
* found 128 certificates in /etc/ssl/certs/ca-certificates.crt
* ALPN, offering http/1.1
* SSL connection using TLS1.2 / ECDHE_RSA_AES_128_GCM_SHA256
....
* Connection #0 to host registry2.balena-cloud.com left intact
on Firewall i see also a lot of (accepted) outbound TCP/443 and UDP/123 Traffic…
Supervisor State (NOT Target Supervisor State):
{
"api_port": 48484,
"ip_address": "192.168.0.20",
"os_version": "balenaOS 2.83.18+rev1",
"mac_address": "20:87:...",
"supervisor_version": "12.11.23", <-- This is target version! According to Dashboard not installed!
"update_pending": false,
"update_failed": false,
"update_downloaded": false,
"commit": "e2c86f..", <-- This is target version! According to Dashboard not installed!
"status": "Idle",
"download_progress": null
}
Device Diagnostics cancels with error
diagnose failed: exit code undefined
Any idea what to do to revive this zombie? Remark: It is geographically far away, so not easy to reboot and so on