Replication failed: ssh: Could not resolve hostname

[shnurov]

I've been getting these e-mails randomly for many months now - really unsure why.

Tried changing the DDNS provider to noip.com from the asuscomm.com (that came free with my ac87 routers) without any improvements.

I believe it will be an issue now as I have just added about 200GB of data on one of my datasets and I believe the SSH pipe breaks before the transfer is complete with my 10MBit upload speed as it would need to be 'open' for almost 48h.

My current networking setup:
Freenas @ studio -> 24port managed switch -> asus rt-ac87 router -> Linksys WRT120N -> 20/10mbit connection -> HOME 60/30mbit connection -> asys rt-ac87 router -> 8port unmanaged gbit switch -> Freenas @ home.

Any ideas?

 

[Sakuru]

What do you have set for Nameserver under the Network tab?

 

[shnurov]

I have Google's DNS's 4.4.4.4 and 8.8.8.8 on both servers on NS 1 and NS2.

 

[Sakuru]

Ok, then it should be fine. How often does your IP address change?
Side note, 4.4.4.4 is Level3, 8.8.8.8 is Google.

 

[shnurov]

Oh... should I put another NS instead of 4.4.4.4 then?

From my ISP? I believe every 21 days or so unless I do a modem reboot

I have a DynDNS service with NoIP.com so I've entered XXXXX.noip.com in the replication screen; forward the correct port to the correct local FreeNAS IP and that's done.

I'm getting those error e-mails a few times a day (2-4), usually during the night when there's nothing really going on.

 

[Sakuru]

It's fine to use 4.4.4.4, I just like correcting people :D

Just to clarify, you're getting these errors on the Studio FreeNAS, correct?

How many replication tasks do you have set up?

 

[shnurov]

Ah okay :)

Yes that's correct - my 'pull' server never complains about anything.

I have 2 tasks, one for each vdev (Photo and Video) to PUSH from studio.

 

[Sakuru]

What is the Status of each task?

Is there anything else in the error message?

 

[shnurov]

Video (added 200gb of data a week ago) - running
Photo - up to date

The full message is, I got those a few times a week/day:

Code:

Replication set4tb/Photo -> XXXXXX.noip.me:remote failed: Failed: ssh: Could not resolve hostname XXXXXX.noip.me: hostname nor servname provided, or not known

There was the other message of:

Code:

Replication set3tb/video -> XXXXXX.noip.me:remote2 failed: Failed: set3tb/video (auto-20160331.1330-3w->auto-20160331.1530-3w)

I am assuming it's currently attempting to resend that snapshot.

 

[shnurov]

Wanted to update this after quite a bit of testing.

Uploading 1.1TB over WAN from Home to Studio worked with no hiccups. Took about 6-7 days, but that's just the first batch.

Uploading 200GB over WAN from Studio to Home was still giving me issue, although now it seems like something went through after 3 weeks of attempts. I had limited the upload to 900kb/s out of 1.17mb/s available as I suspect my uplink is not of great quality.

To bypass the issue - I will be reconfiguring my snapshots to happen every 30m & every hour - that way I am limiting the amount of data to copy over within 1 new snapshot.