> Today I received the error again:
>
> Received disconnect from IP: 2: fork failed: Resource temporarily
> unavailable
>
> rsync: connection unexpectedly closed (0 bytes read so far)
> rsync error: error in rsync protocol data stream (code 12) at
> io.c(150)
> rsync error: partial transfer (code 23) at main.c(578)
>
> I've checked the system logs to check if the system was out of resouces but
> I can't find anything.
> Is there's something else what it could be?
That message is not coming from anywhere in rsync. This must be coming from a library. I notice a "^M" on the end of it. Either the other end is windows or this message has been cooked (stty).
I cannot say what resource is temporarily unavailable. It might have run out of pids or, more likely, memory. In either case if fork failed rsync will quickly exit freeing up resources. If you feel daring you could run a fork bomb to confirm that it is fork hitting a limit.
I've add verbose logging to the SSH deamon, and I notice something strange. I'am using a public key create a SSH connection, this is working correct. The connection is created successfully like the logs shows. As you can see the connection disconnections after a few seconds and a new connection is started. This repeats itself for almost an hour!!! This is probaly is creating a fork limit...
Do you know what could be wrong?
Logfile:
Aug 8 04:00:23 doos sshd[22581]: Connection from 123.456.789.123 port 21408
Aug 8 04:00:25 doos sshd[4488]: Failed none for user from 123.456.789.123 port 21408 ssh2
Aug 8 04:00:25 doos sshd[22581]: Failed none for user from 123.456.789.123 port 21408 ssh2
Aug 8 04:00:25 doos sshd[22581]: Found matching DSA key: bc:f9:00:ed:29:78:f4:4b:d3:9c:e2:99:f9:31:16:00
Aug 8 04:00:25 doos sshd[4488]: Accepted publickey for user from 123.456.789.123 port 21408 ssh2
Aug 8 04:00:25 doos sshd[22581]: Accepted publickey for user from 123.456.789.123 port 21408 ssh2
Aug 8 04:00:43 doos sshd[2772]: Connection closed by 123.456.789.123
Aug 8 04:00:43 doos sshd[2772]: Closing connection to 123.456.789.123
Aug 8 04:00:43 doos sshd[30621]: Connection from 123.456.789.123 port 42870
Aug 8 04:00:44 doos sshd[30621]: Failed none for user from 123.456.789.123 port 42870 ssh2
Aug 8 04:00:44 doos sshd[28720]: Failed none for user from 123.456.789.123 port 42870 ssh2
Aug 8 04:00:45 doos sshd[30621]: Found matching DSA key: bc:f9:00:ed:29:78:f4:4b:d3:9c:e2:99:f9:31:16:00
Aug 8 04:00:45 doos sshd[28720]: Accepted publickey for user from 123.456.789.123 port 42870 ssh2
Aug 8 04:00:45 doos sshd[30621]: Accepted publickey for user from 123.456.789.123 port 42870 ssh2
Aug 8 04:00:47 doos sshd[20405]: Connection closed by 123.456.789.123
Aug 8 04:00:47 doos sshd[20405]: Closing connection to 123.456.789.123
Aug 8 04:01:23 doos sshd[31597]: Connection from 123.456.789.123 port 27324
Aug 8 04:01:24 doos sshd[31597]: Failed none for user from 123.456.789.123 port 27324 ssh2
Aug 8 04:01:24 doos sshd[10248]: Failed none for user from 123.456.789.123 port 27324 ssh2
Aug 8 04:01:24 doos sshd[31597]: Found matching DSA key: bc:f9:00:ed:29:78:f4:4b:d3:9c:e2:99:f9:31:16:00
Aug 8 04:01:24 doos sshd[10248]: Accepted publickey for user from 123.456.789.123 port 27324 ssh2
Aug 8 04:01:24 doos sshd[31597]: Accepted publickey for user from 123.456.789.123 port 27324 ssh2
Aug 8 04:01:32 doos sshd[1537]: Connection closed by 123.456.789.123
Aug 8 04:01:32 doos sshd[1537]: Closing connection to 123.456.789.123
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