Client is not being detected by mender Server

General Discussions
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1

Hi. I’m experiencing problems with the installation of the mender clinet. I installed mender server following this guide https://docs.mender.io/3.1/server-installation then I prepared the raspberrypi 4 following this instructions https://docs.mender.io/3.1/get-started/preparation/prepare-a-raspberry-pi-device

After that I paste in the client the command generated by my mender server:

wget -q -O- https://get.mender.io | sudo bash -s -- --demo -- --quiet --device-type "raspberrypi4" --demo --server-ip "my.server.ip.address"

Checking the logs in the client

-- Logs begin at Thu 2019-02-14 11:11:59 CET. --
Dez 11 17:16:12 MenderJC mender[4782]: time="2021-12-11T17:16:12+01:00" level=error msg="Authorize failed: transient error: authorization request failed: transient error: authorization request failed: Unknown url.Error type: Host validation error"
Dez 11 17:16:12 MenderJC mender[4782]: time="2021-12-11T17:16:12+01:00" level=error msg="Authorize failed: transient error: authorization request failed: transient error: authorization request failed: Unknown url.Error type: Host validation error"
Dez 11 17:16:12 MenderJC mender[4782]: time="2021-12-11T17:16:12+01:00" level=info msg="State transition: authorize [Sync] -> authorize-wait [Idle]"
Dez 11 17:16:42 MenderJC mender[4782]: time="2021-12-11T17:16:42+01:00" level=info msg="State transition: authorize-wait [Idle] -> authorize [Sync]"
Dez 11 17:16:42 MenderJC mender[4782]: using interface /sys/class/net/eth0
Dez 11 17:16:42 MenderJC mender[4782]: time="2021-12-11T17:16:42+01:00" level=error msg="Failure occurred while executing authorization request: Method: Post, URL: https://docker.mender.io/api/devices/v1/authentication/auth_requests"
Dez 11 17:16:42 MenderJC mender[4782]: time="2021-12-11T17:16:42+01:00" level=error msg="Failure occurred while executing authorization request: Method: Post, URL: https://docker.mender.io/api/devices/v1/authentication/auth_requests"
Dez 11 17:16:42 MenderJC mender[4782]: time="2021-12-11T17:16:42+01:00" level=error msg="Authorize failed: transient error: authorization request failed: transient error: authorization request failed: Unknown url.Error type: Host validation error"

the mender.config looks like this:

{
    "HttpsClient": {},
    "Security": {},
    "RootfsPartA": "/dev/mmcblk0p2",
    "RootfsPartB": "/dev/mmcblk0p3",
    "DeviceTypeFile": "/var/lib/mender/device_type",
    "DBus": {
        "Enabled": true
    },
    "UpdateControlMapExpirationTimeSeconds": 90,
    "UpdateControlMapBootExpirationTimeSeconds": 45,
    "UpdatePollIntervalSeconds": 5,
    "InventoryPollIntervalSeconds": 5,
    "RetryPollIntervalSeconds": 30,
    "ServerCertificate": "/usr/share/doc/mender-client/examples/demo.crt",
    "Servers": [
        {
            "ServerURL": "https://docker.mender.io"
        }
    ]
}

after that I have also tried replacing "ServerCertificate": "/usr/share/doc/mender-client/examples/demo.crt" with the certificate generated by the server having a final config "ServerCertificate": "/usr/share/doc/mender-client/examples/cert.crt"

Any help would be really appreciate it

by the way, at the time I’m posting this the mender docu site is not available: “502 bad gateway”

2

Thanks, seems to be working again now however :slight_smile:

Just to start out, the server and the client are run on separate machines and networks?

3

Hi,

Yes, the client and server are running in different networks. The server runs on DigitalOcean and the client on a raspberrypi 4 with the mender image

4

Then how is the client resolving this domain name?