Hey all,
So I've been setting up a new Proxmox node from OVH and have a strange issue. So strange I've just re-installed from OVH's 4.2 template to troubleshoot. The problem is that after 10-20mins any VM will drop its internet connection speed by around 90%. Here's some info:
1. Node speed downloading from internet is perfect.
2. Internal VM to VM speed is perfect.
3. VM to internet speed is perfect on boot. After 10 minutes or so reduces by around 90% sometimes much more.
4. Once speed reduction happens if I "systemctl restart network" on the VM the speed is again great for 10 minutes or so until it drops off again.
Example on VM network restart:
Example after 30 minutes:
Here is my node interfaces which I've left untouched from the OVH template for troubleshooting:
..and my VM ifcfg-eth0:
Really at a loss how to go about diagnosing this give that I've reduced it right down to a very simple setup. Any advice is appreciated guys!
So I've been setting up a new Proxmox node from OVH and have a strange issue. So strange I've just re-installed from OVH's 4.2 template to troubleshoot. The problem is that after 10-20mins any VM will drop its internet connection speed by around 90%. Here's some info:
1. Node speed downloading from internet is perfect.
2. Internal VM to VM speed is perfect.
3. VM to internet speed is perfect on boot. After 10 minutes or so reduces by around 90% sometimes much more.
4. Once speed reduction happens if I "systemctl restart network" on the VM the speed is again great for 10 minutes or so until it drops off again.
Example on VM network restart:
Code:
[root@gw ~]# wget http://mirror.nl.leaseweb.net/speedtest/1000mb.bin
--2016-08-09 09:48:06-- http://mirror.nl.leaseweb.net/speedtest/1000mb.bin
Resolving mirror.nl.leaseweb.net (mirror.nl.leaseweb.net)... 5.79.108.33, 2001:1af8:4700:b210::33
Connecting to mirror.nl.leaseweb.net (mirror.nl.leaseweb.net)|5.79.108.33|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1000000000 (954M) [application/octet-stream]
Saving to: ‘1000mb.bin.5’
89% [========================================> ] 897,634,907 113MB/s eta 1sExample after 30 minutes:
Code:
[root@gw ~]# wget http://mirror.nl.leaseweb.net/speedtest/1000mb.bin
--2016-08-09 10:22:51-- http://mirror.nl.leaseweb.net/speedtest/1000mb.bin
Resolving mirror.nl.leaseweb.net (mirror.nl.leaseweb.net)... 5.79.108.33, 2001:1af8:4700:b210::33
Connecting to mirror.nl.leaseweb.net (mirror.nl.leaseweb.net)|5.79.108.33|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1000000000 (954M) [application/octet-stream]
Saving to: ‘1000mb.bin’
3% [====> ] 36,685,155 3.92MB/s eta 4m 5sHere is my node interfaces which I've left untouched from the OVH template for troubleshooting:
Code:
# for Routing
auto vmbr1
iface vmbr1 inet manual
post-up /etc/pve/kvm-networking.sh
bridge_ports dummy0
bridge_stp off
bridge_fd 0
# vmbr0: Bridging. Make sure to use only MAC adresses that were assigned to you.
auto vmbr0
iface vmbr0 inet static
address HN_IP.91
netmask 255.255.255.0
network HN_IP.0
broadcast HN_IP.255
gateway HN_IP.254
bridge_ports eth0
bridge_stp off
bridge_fd 0..and my VM ifcfg-eth0:
Code:
TYPE=Ethernet
BOOTPROTO=none
PEERDNS=yes
IPV6INIT=no
DEVICE=eth0
ONBOOT=no
USERCTL=no
IPADDR=FAILOVER_IP
NETMASK=255.255.255.255
GATEWAY=HN_IP.254
ARP=yes
HWADDR=OVH_MAC_ADDRESSReally at a loss how to go about diagnosing this give that I've reduced it right down to a very simple setup. Any advice is appreciated guys!
