Main question - is there any specific/easy way to find out where network utilization is coming from?
More detailed info -
I have a bare-bones host OS. It has KVM/qemu installed, x2go server,...
Type: Posts; User: bsntech; Keyword(s):
Main question - is there any specific/easy way to find out where network utilization is coming from?
More detailed info -
I have a bare-bones host OS. It has KVM/qemu installed, x2go server,...
Just installed a Samsung 960 EVO 500 GB NVME drive in my system using a PCIe interface card.
On the host machine:
hdparm -Tt /dev/nvme0n1p1
/dev/nvme0n1p1:
Timing cached reads: 10044...
Very odd situation here.
Two datacenters with different ISPs. Each data center has at least a 100 mbps connection or higher.
During hours of say 1 am through 2 pm, everything is fine.
Then...
Setting up a new server to replace an existing.
Server does DNS, web, e-mail services.
The current server is connected to a network with a Broadband connection with a static IP address. It has...
This has been solved.
Linux obviously doesn't exactly play by the regular rules of the TCP stack like Windows machines do.
A ping to x.x.249.75 worked all the time; no problems. Why? It was a...
Welp, the TCP stack in Windows is obviously different than Linux/Ubuntu.
Still not able to get to the bottom of this problem.
SOME IP addresses in the 249 subnet are pingable on the Ubuntu...
Additional info if it is helpful.
I can now ping on that 249.x subnet. Absolutely nothing else was changed.
But when doing a ping to an IP, say 216.107.249.87, the router is seemingly...
There are a total of four subnets; Seems anything to the other two subnets are fine, but to the .249 subnet it doesn't work.
All of the subnets are connected to the same switch/router. It is a...
Have an Ubuntu 14.04 DNS server running bind. Let's say it is on subnet 216.107.250.x and subnet mask is 255.255.255.128. Gateway is set to 216.107.250.1.
Getting complaints that there are...
Very much appreciate the responses.
The minimal install of Ubuntu turned out to be only a gig with nothing else loaded. Going to check and see if I can find your KVM article for the host...
Appreciate the response back, TheFu.
I'm installing a minimal version of Ubuntu currently - just for testing and will then install the necessary requirements.
The main reason for the remote...
Seeking recommendations for the version of Ubuntu that should be installed.
This will be for production servers that will have a large range of services for web - apache, proftp, dovecot, exim4,...
Appreciate the reply. It shows Ubuntu 12.04.3 LTS in there.
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.3 LTS
Release: 12.04
Codename: ...
Bumping up one time to see if anyone has advice on this. It doesn't seem like it is affecting anything or causing negative side effects - just the fact that the login still says an update is...
Upgraded eight servers from 12.04 to 14.04.
All of them went well, except for one. When logging in, it still shows that 12.04.3 LTS is installed - using kernel 3.13.0-48-generic. There is also...
Solved this today.
Fully removed the configuration files and set them back up to get the default config files for the apache install.
There may have been something in the apache2.conf file that...
Upgraded from Ubuntu 12.04 to 14.04 a couple weeks back.
Before, I would always restart the server using "service apache2 restart". No problems, worked well.
Now with the upgrade, it will no...
Wow.. something else must be going on. Looked at the /var/run/apache2.pid file. Owned by root. Stopped apache (apachectl stop) and the file disappeared. Tried to restart apache by doing 'sudo...
That does not work with the new version of Apache. With Apache 2.2, it worked - but not with Apache 2.4.
Need some advice on how to start Apache remotely.
With Apache 2.2, I was able to do the following command:
ssh <server> 'service apache2 restart'
With Apache 2.4, I know get errors about...
Ubuntu running kernel 3.2.0-60.
Two days ago, early in the morning, the load average of the machine started going on a constant uphill line. CPU usage very low with about 85% idle. Memory usage...
Appreciate the reply. Server was just restarted about an hour ago. Looking at the syslog - it clear stops at 9:36 PM with the last line from Dovecot with an error about an aborted login request...
Been running a server for years.
A graphing system is used to monitor the server - network, load, cpu, etc. A few days ago, I saw that the server started taking a heavy load. Went from 0 up to 4...
Issue seems resolved now. Updating the firmware of the SmartArray 6i on the servers have had good results for the past couple of days. No lock-ups or large loads causing the server to hang.
I posted the question over at serverfault and a guy replied pretty quickly. He believed the problem to be an I/O error since the server could still respond to network pings and was responding to DNS...