The developer i s working on the Budapest node. KR 2015-02-27 9:18 GMT+01:00 Xavier Carol Rossell <xavier.carol at i2cat.net>: > Hi, > > Developer added more information to this issue. > > > This afternoon machines were accessible again, but after doing some > iptables operations, servers are unavailable again. This is what we've done: > > 1. We have one server, lb.alquimia.io, with a floating IP and a public > internal > 2. We have a couple of backend servers with public internal > 3. We pass on traffic to some ports on the frontend to the backend > servers. To simulate this behavior, we are redirecting some ssh traffic on > the head to the ssh on the backends. > 4. This is what we do: > > root at sf-appserver1:~# echo "1" > /proc/sys/net/ipv4/ip_forward > root at sf-appserver1:~# iptables -t nat -A PREROUTING -p tcp --dport 22022 > -j DNAT --to-destination 10.10.13.102:22 > root at sf-appserver1:~# iptables -t nat -A PREROUTING -p tcp --dport 22023 > -j DNAT --to-destination 10.10.13.105:22 > root at sf-appserver1:~# iptables -t nat -A POSTROUTING -j MASQUERADE > > where 10.10.13.102 and 105 are the backends. > > I have been able to work for five minutes on the servers, but then ssh > client has became unresponsive, and servers are NOT appearing again on the > cloud.lab webpage. In fact, NOTHING is being displayed on the cloud.lab > portal: no images, no floating IPs, no keypairs, no security groups. > > I would say that there is a link between the 'iptables' commands and the > connectivity problems, but I cannot even imagine what is the problem. I > have done this 'iptables' trick in other virtualized environments without > problems :/ > > Thanks, > > i- > > > > > 2015-02-26 9:21 GMT+01:00 Xavier Carol Rossell <xavier.carol at i2cat.net>: > >> Hello, >> >> We are experiencing difficulties in accessing our machines via SSH. >> It is returning a time out "no route to host" error. We tried accessing >> from three different computers using different connections. >> >> We checked them in FiwareLab interface and they are there, running. >> However, the interface itself took some time to display the machines >> (something that didn't happen before). >> >> Regards. >> >> >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.fiware.org/private/fiware-creatifi-coaching/attachments/20150227/d01058b4/attachment.html>
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