Resolved] Cannot move spark-core to local cloud

Cloud
1

I have installed a local cloud server and successfully connect my first core to it.

However, I have problems with my second core, it does not connect to my local cloud server, here the output from “main.js”:

Connection from: 192.168.178.85, connId: 2
1: Core disconnected: get_hello timed out { coreID: '53ff6a065075535151551487', cache_key: '_1' }
Session ended for _1
Connection from: 192.168.178.85, connId: 3
onSocketData called, but no data sent.
1: Core disconnected: socket close false { coreID: '53ff6a065075535151551487', cache_key: '_2' }
Session ended for _2

From this I conclude that the WIFI connection is working, but there may be a problem with the keys.

Now I tried a factory reset, but again cannot get it working (after performing a reset, for a second it shows cyan - then starts blinking green, then blinking yellow, then blinking red, then blinking cyan, …)

What are the correct steps to bring a spark-core in “unknown” condition to a local cloud server? And “what key” has to be “where”?

Do you have a manual which describes step by step the addition of a core to a local cloud, like:

1. factory reset and reconfigure WLAN with android app.
2. ...
3. ...
4. copy keys with ....
5. ...

?

thanks for you help,
michael.

2

Maybe this helps:

3

Thanks, Kenneth, step 6 of this instruction does not work with my core/my setup:

spark keys save 53ff6a065075535151551487
running dfu-util -l
FOUND DFU DEVICE 1d50:607f
running dfu-util -d 1d50:607f -a 1 -s 0x00002000:1024 -U 53ff6a065075535151551487
running openssl rsa -in 53ff6a065075535151551487 -inform DER -pubout  -out 53ff6a065075535151551487.pub.pem
Error saving key from core... Error: Command failed: unable to load Private Key
140110099629728:error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag:tasn_dec.c:1319:

I lost the overview about the keys… in the spark directory of my PC (not the server), I now have a bunch of different keys and don’t understand, what key is placed on the CORE and what on the server (192.168.178.84 is the server IP):

$ls
53ff6a065075535151551487
53ff6a065075535151551487_new.der
53ff6a065075535151551487_new.pem
53ff6a065075535151551487_new.pub.pem
default_key.pub192_168_178_84.der
default_key.pub.der
default_key.pub.pem
pre_53ff6a065075535151551487_new.der

Which of these keys need to be in the servers js/core_keys directory ?

thx, michael.

4

I copied the key

53ff6a065075535151551487_new.pub.pem

as

53ff6a065075535151551487.pub.pem

into the servers …spark-server/js/core_keys directory - however, this does not seem to be the right one.
??
How do I get the key from the core to the server?

5

Seems like there’s an issue copying out the private key from your core.

can you delete all the keys and retry the command again?

You will need the core_id.pub.pem file in the core_keys directory

6

I removed all the keys and tried the “spark key save core.der” command again, again the error is

..
Error saving key from core... Error: Command failed: unable to load Private Key
..

?

7

I tried to create new keys with the “key doctor”, as described here:

http://support.spark.io/hc/en-us/articles/203038434-How-do-I-backup-restore-change-my-Core-s-Key-

But this also does not work, same error

Error saving key to core... Error: Command failed: unable to load Private Key

? What else can I do ?

8

I solved the issue by storing news keys to the core using dfu-util as described here:

https://community.spark.io/t/troubleshooting-my-core-is-flashing-yellow-red-lights-after-it-connects-to-wifi/627/2
9

Alright glad you solved it!