1 Hostserver with Proxmox: 3 VM's - Network between VMs very slow

[Brandeer]

Hi

I've the following setup

Hostserver Debian 6.0 IPs: 77.x.x.20, 10.0.0.1
VM1 Debian 6.0 Ngnix as reverse Proxy IPs: 77.x.x.21, 10.0.0.1
VM2 Debian 6.0 MySQL IP: 10.0.0.3
VM3 Debian 5.0 Apache / PHP IP: 10.0.0.4

Now I like to connect from VM3 to VM2 over the internal IP (10.0.0.3 / 10.0.0.2) and port 3306 (MySQL).
A simply connection to de other VM needs over 10sek (SSH also) - so the applications are very slow..
Pings are fast / normal

Do I have to whitelist the connections over iptables on the VMs / Hostserver or what's the reason for that nightmare?

Regards,
Kevin

 

[pcravero]

Hi.
I assume your multihomed machines have 2 vNICs and all VMs are on the same physical host. Also that VM1 has 10.0.0.2 not .1. How about DNS name resolution? A slow to start SSH connection (on the 10.x net) reminds me of a timeout within hostname resolution.

Paolo