similar to: Measuring domU traffic with vnstat

Hi, experts I found the tun0 is 10Mb/s and I installed vnstat to monitor the tinc vpn traffic statistic, but due to 10Mb/s, the vnstat couldn’t update it’s database due to low speed rate, so anyway to change the tun from10Mb/s to higher? [root at box1 ~]# vnstat -u Info: Traffic rate for "myvpn" higher than set maximum 10 Mbit (248->341, r735 t38), syncing. [root at box1 ~]#

Hi, The default settings for celtclient are:- Sampling rate 48000 Frame size 256 Packet size 43 According to my calculations this should give a bitrate of 64kbit/sec + a little extra for the 32bit time stamp and 4 null byte pseudo header. Using vnstat I was very surprised to see that it was reporting a bitrate usage of around 16kbyte/sec which is 128kbit/sec, double what I was expecting. I

Hi folks, is it possible to monitor and gather statistics in realtime (CPU, memory, HDD, network, ... - something like dstat) of guest systems with libvirt through console from host system (KVM based)? If yes, do those guests need to be created through libvirt? Thanks for your help and time.

Hi, I am trying to create a report across all my KVM hypervisors using libvirt API and I need some assistance in figuring out the right API calls. My report will contain the total available memory, CPU, disk across all hypervisors, versus the amount used by the virtual machines. This report will help figure out if we are running low on hypervisor disk, CPU or memory and if we need to add more. I

Hi Guy, I am trying to figure out how & where can i get the bandwidth usage utilization statistic info for all the VM, so in the end i will be able to use it for metering purpose.. Anyone got any idea ? Regards, Peter -------------- next part -------------- An HTML attachment was scrubbed... URL:

Would it be possible to list the Host sFlow project in the Monitoring section of http://libvirt.org/apps.html? Host sFlow <http://host-sflow.sourceforge.net/> Host sFlow is a light weight agent running on KVM hypervisors that links to libvirt library and exports standardized cpu, memory, network and disk metrics for all virtual machines using sFlow protocol. Thanks, Peter

Hello, Recently I''ve received some complaints that there is excessive but intermittent latency of network traffic to domUs on some of my servers. Upon investigation it seems that on some servers, indeed traffic is occasionally delayed by up to 140ms where something like 5ms RTT would be expected. The average RTT is not unusual; since this is only occasional packets it only affects the

Hi all, I''ve got XCP 1.0 up and running nicely and would like to use it in production. However I''m struggling with the concept of bandwidth management. It seems like such a common problem that everyone must have, but I can''t find any clear direction in which to go. The dedicated host I am using (Hetzner) gives me a 5TB monthly bandwidth quota which needs to be shared

Hi! we have two Intel Quad Nic 82576, PCI ID 8086:10E8 and use the igb driver 1.3.19.3 on Debian 5.0.1. I used the pciback.hide XEN kernel parameter and made on of the NIC''s interfaces available in a DomU. Now, when I am starting the VM, the system crashes (log attached) I also tried to boot with the irqpoll option - the Interrupt Disabled message still appears when I try to start the

I have a remote CentOS-5.3 installation that shares traffic with another enterprise. I want to record and measure the actual network traffic that comes into and goes out of that host's net i/f on a monthly basis for billing verification purposes. Does CentOS have a software package to accomplish this? I have run across references to a package called vnstat as a possible answer to my

Hi, I have noticed that virt-manager has the ability to show me the current cpu- and memory-usage of both the host and running guest machines. How does it do that? I could make good use of that information myself in the client applications I'm writing, however, from what I can see on http://libvirt.org/html/libvirt-libvirt.html, I have no idea how to go about getting it from libvirt. In

hi; I'm curious, is there a way, after i set up an admin ivr one needs a password to enter, to make for say option 7 for say give me current bandwith usage information? Let me tell you what i do now and you could give me your ideas. First of all i have a user, mbabcock that i ssh with, I'm using the latest of freepbx and right now how i get the status for me is typing vnstat and

Hi, I have a router running BGP and OSPF (bird) on FreeBSD. Are there any best practises one can take in order to protect the network from DDoS attacks. I know this isn't easy. But I would like to secure my network as much as possible. Even if I'am not able to prevent or block a ddos I would like to get some info (snmp trap parhaps) regarding the attack. Then I can contact my ISP or

Hi , I have two KVM guests in ubuntu host machine.I am using Python binding of Libvirt API to query on the hypervisor and capture the CPU , memory related information of the guest machines. I need to capture the detail information regarding CPU like : cpu_aidle, cpu_idle, cpu_speed, cpu_wio and memory like :mem_cached,mem_buffers,mem_free etc. of the guest machines. How could I get these

Hello all: Is there a network switch that will give me traffic stats at an IP address level? Right now, I only get statstics at a port level, but that does not help since each of my servers run several virtual machines and I need to measure traffic per virtual machine. Thanks, Neil -- Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com Will your e-commerce site go offline if you have a DB

Hi guys , Im have some problems installing the following packages: rrdtool-devel rrdtool-perl Before we moved to centos/rhel7 it was a simple task, just doing: yum install rrdtool rrdtool-devel and rrdtool-perl was enough. Now, I only can install the rrdtool package but not rrdtool-devel and rrdtool-perl. I tryed adding some repos, but I think I added wrong ones. Also tryed downloading and

I'm running a mix of CentOS 5 and 6 servers reachable by ssh from the Internet. Of course I allow only public key authentication and no root login. In addition I'm running fail2ban to block obnoxious brute force attack sources. On CentOS 6 this is working pretty well, but on CentOS 5 there's one class of attacks fail2ban fails to ban. (No pun intended.) This isn't fail2ban's

I don't know why I haven't signed up for this list before since we use CentOS all over the place. The list is very useful and it is good for me to participate and "give back" to the community. Anywho, I wanted to post this response to a thread that was created back in November 2008 about the ntop daemon failing to start. I'm currently setting up ntop as a NetFlow &

Hi All, I am wondering what tools are available in CentOS 5.5 that would allow me to measure incoming and outgoing network speeds? My new website seems to be getting a lot more traffic that I had anticipated off the bat and I would like to measure resource usage to ensure it is keeping up. I know that top only measures CPU Best, -Jason

Hello, has anyone done any performance measuring of Linux Bridge + firewalling? I did search the net for a long time, to find out what would be the best way to measure the (maximum) performance/throughput. I didn't really come to a conclusion I'm satisfied with. Nevertheless I did create a small bridged test setup with 4 servers (gbit nics) and a linux bridge (2 x 100 mbit nic), all on