Server :: How To Do DB-driven Site Which Overshoots Load Of 1 Computer
Mar 25, 2010
If a site reaches a point where 1 machine simply isn't enough to handle it, what exactly is done? I've heard of "round robin DNS load balancing", but that's obviously not going to work if the site has CGI scripts/a substantial backend of any kind as that data will have to be copied over to every server, and I'd guess that that's not feasible. If the site uses a MYSQL server, and a second web server to take over the extra traffic from the first is put up (how would traffic be redirected to it?), when it makes a database query, it still has to connect to the 1st server, so, we're not really solving the problem at all, it remains just the same.
So - how is it done, for large, high traffic sites? (possibly like LQ itself?)
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Aug 5, 2010
I have a server and i think that my server is under Ddos attack. i see that server is not having much load and only few process runs but my site opens very slow. i executed the following command on my ssh:
[Code]....
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Feb 18, 2010
In the office there is a local network with samba+openldap PDC. The local domain name is company.net. The company desided to create a corporate Website on a remote hosting and desided that the site's domain should be company.net which is same as local network's domain name. So now it is not possible to reach that corporate website from within the company's local network because, as I guess, bind9 which is installed on above menioned PDC looks for company.net on a local webserver. Is there a possibility to let people from this local network browse the remote site?
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Aug 1, 2010
In Iceweasel (Debian's name for Firefox) within the Preferences you can select "Load images automatically". I have this unchecked, because I use dial-up and prefer not to have to waste time with images. However, for some sites it's sometimes useful to load the images. So, I'm wondering if there is a way to simply load the images for a site that is easier than what I currently do (which is: going to Edit-Preferences-Content, rechecking "Load images automatically" then pressing Reload). In short, is there a way to have a button somewhere that I can press that will simply load the images for the current site while I can still have the "Load images automatically" preference box unchecked?
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Feb 18, 2010
Here's a strange one. On my internal network, there are two WinBlows boxes, both connected to my Linux Router/Firewall. Yesterday, I needed to download a file from http://www.freebsd.org. The 1st machine I tried, would not connect from FireFox. When I tried, on the 2nd, it connected immediately. So, I did all the usual "stuff" on the 1st one. Re-booted, as it's WinBlows, cleared browser cache, etc. etc. It still wouldn't connect. BTW, connecting to other web sites was no issue. Just FreeBSD.
So, just for grins, I ran a traceroute from both machines, and here's where it gets freaky. Here's the traceroute from the working machine code...
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Dec 4, 2010
I want to interface GPIO driven matrix keypad(4X4) to my linux box.
I saw a driver source file
linux-2.6.32.2/drivers/input/keyboard/matrix_keypad.c
How can I use this to achieve what I want?
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Feb 23, 2010
Tool to load software downloaded from a internet site? Does anyone know where in gnome desktop the tool for installing software downloaded from the internet or off a cd disk>
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Nov 3, 2010
running apache2, i have already created a working sites. using virtual name hosting.but my problem is, i cant access my other sites except my server's localhost from other computer. i dont know what seems to be the problem, can you guys point me where to start looking?
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Feb 10, 2011
I am running ubuntu 10.04, and I have one website up and running 1 website.from my local server, from my local computer on the same network I can type in the ip address of my server and I do get the default webserver is running page, however when I try to connect to my domain, it cannot find it. I have run a ping, and it reached it just fine.
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Oct 13, 2010
How I can benefit from a public external IP? Do I need a public IP to access my computer from a remote site?run a tftp server ?
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Dec 18, 2010
Very strange happenings going on here. Have three computers that dual boot with Ubuntu and WindowsXP. All three have failed in the identical manner!While reading a web site in Windows,the computer screen becomes frozen then a messege flashes momentarily stating "A problem has occurred" then the computer shuts down and will not reboot. Attempting to reboot results in a black screen with an unresponsive cursor in the upper right hand corner of the screen.
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Jul 22, 2011
I am running a CentOS 5.6 Server with a website and Forum. The website has a contact form and users can email various people in the organization. I have setup sendmail to send any mails like this to my email address on a Windows machine.The problem is that there emails don't have a header which has the senders original email header. It comes from localhost on my sendmail. How can I get any mail generated from the apache site to ALSO send mail to root on the Centos Server? That way I should be able to see the header and report the spammer or block them.
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Jun 25, 2010
I have to ubuntu machine (9.10 and 10.4) with a openvpn tunnel between them.This is the situation:
Code:
NetworkA 192.168.0.0/24
|
UbuntuA br0:192.168.0.3 (openvpn bridge between eth0 and tap0)[code].....
UbuntuA has one only interface etho and there are two openvpn instance: one bridge istance with br0 and another instance with tun0.
UbuntuA is not the gateway for networkA. UbuntuB is the gateway for NetworkB.I need to comunicate between pc on networkB e those on networkA.This is the "ping situation" (no pc tested has an active firewall):
ubuntuA vs ubuntuB: OK
ubuntuB vs ubuntuA: OK
pc on NetworkA vs ubuntuA and ubuntuB: OK[code].....
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Jul 27, 2010
I've been on a quest to enable full routing through my openvpn tunnel between my office and the colo. Masquerading will work, however it will throw off anything key based and makes a lot of things just more difficult and vague in general. Is there an easy way to do this via iptables? I tried using quagga hoping it would magically solve my problems, however it does not seem to do my routing for me . I just did a basic static route within zebra...
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Jul 27, 2011
I have installed proxy server on ubuntu.I have done every process which is needed to establish proxy server.internet is also working fine through proxy but the sites which needs to be blocked it is not blocking.it is opening.I have made entry of sites which i needed to be blocked in block_dstdomain file in proxy
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Mar 22, 2009
I am trying to set up a web based FTP site on my home server, I got ftp up and running and I can log into it using an ftp client but I want to set it up so I can get to it from the web. I put the directory in the www/html folder but that does not seem to help it
If anyone could point me in the right direction that would be great. I also need to let anonymous users get access to it.
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Mar 25, 2010
I have three locations with a central office connected to two remote locations. At the central office I run on a cisco asa 5505 two site to site vpns. The remote end of the first site is a checkpoint firewall , and the remote end of the second site is racoon on debian. Both sites are up and working. However, where at the first site traffic goes both ways, at the second site it only works from the central office to the remote office.
For example, I can ssh from a host in the central office to a host in the first remote site (through checkpoint firewall,) then ssh back from that host at the remote office to any host in the central office. In contrast, after I ssh from a host in the central office to a host in the second remote office (through racoon), I cannot see the central office hosts (ping the ip address of a central office host, ssh, etc. all fail.) The vpn settings at the central office (the cisco asa 5505) are identical. So it seems to me that some routing magic is missing on the host running racoon at the second remote office. Where would such setting reside? racoon config files? iptables?
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Oct 9, 2010
My computer was built by a small, local business. This past spring, I wiped the computer and reinstalled Windows 7 Pro from a 64 disk. It has worked well. I wanted to play with Ubuntu, so I set up a dual-boot. When I first installed Ubuntu last week, I had issues with Java. After countless failures from Google, I installed a new Ubuntu partition without deleting the old one. The other day, I got curious and wanted to try Mint. This went on yet another partition. Yesterday I wanted to organize this out better, so I formatted the Mint partition and it's swap. The computer functioned just fine until I tried to reboot. It starts out with normal BIOS(?) stuff, "Loading Operating System..." for a bit... and then breaks. It says something about not being able to find device, shows a UUID, then goes into grub rescue.
I spent around an hour or so Googling about this and have come up with nothing. Internet tells me to do this, I do, nothing happens. Internet tells me to do that, the file does not exist, nothing happens. I was Googling via my mom's laptop, and I am currently posting this from Firefox on the LiveCD (demo). I still have my Windows 7 install disk, although finding it is a different story.
How do I fix my booting issue, preferably without losing any data from my second Ubuntu install (I do not care about the first one - on sdb5?) or Windows 7.
sudo fdisk -l
Code:
ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
[Code].....
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Apr 21, 2010
I burned about 5 different CDs and could not load Ubuntu onto my computer. I would get error messages. I then took the CD and tried it on my wife's computer. Instant success. My present computer has Ubuntu 9.10 64 bit. The optical drive is relatively new and has been used rarely.
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Oct 3, 2010
Maybe a site-to-site Ouija board connection.
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Apr 28, 2011
My computer(win xp) crashed. When I turn it on I get the flickering line. If I press F2 while the BIOS is loading I can access the BIOS setup, but no operating system will load. I am not very familiar with BIOS. I put a cd in the cd drive that contained the latest download of Ubuntu and told it to reboot. Nothing happened. Setup says my CD-drive is set to a secondary drive. I looked in the CD files and I saw the windows installer (wubi). Is there a way I can boot linux?
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Mar 10, 2011
I'm having trouble with my java, I got it to isntall, restarted but when I go to any java based chat, or drawing site it doesn't load the applet, the applet shows up it just says "Start: Applet not initialized"
Did I install it wrong?
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Nov 27, 2010
After normal use the computer was turned on and would not load (10.04) and the error message on the screen was :
Quote:
/sbin/init: error while loading shared libraries: libnih.so.1: cannot open shared object file: Input/output error
[ 26.369130] Kernel panic - not syncing: Attempted to kill init!
Anyways, I put the hard drive in an external unit, and I ran fsck. Many errors came up and they were all fixed. I was able to mount the drive on my other computer and back up files in the home directory.
If I try to select recovery mode and the same error appears.
What can I do in this case? Can I somehow get into a recovery-like mode off of the livecd to maybe fix the packages that might be "messed up"?
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Jul 28, 2011
I just added a 3rd hard drive, but now when I boot my computer grub doesn't load at all, it just boots to Windows. I've tried holding down Shift, and I've tried holding down ESC but it didn't work. I believe I have grub2.
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Feb 2, 2010
I have start apache, and can see my site on 127.0.0.1, but I have router and don't know how to check my site from outside (Internet bellow). I have no domain name registered. Just want to check web server.
That should be easy. (or not?)
The router has static IP xxx.xxx.xxx.239 from the my internet provider and assign 192.168.1.100 to my computer.
Internet
Router
My computer - host my site
How to see my site from Internet?
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Apr 9, 2011
I have one site running on ssl and i want to configure second. How can i do this? My first site is configured on port 443.here is ports.conf
Code:
ServerName kdelchev.com
NameVirtualHost *:80
[code]...
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Jun 14, 2011
The Chinese below says the site is not trustworthy to go. What should I do?
http://www.4shared.com/photo/XqdcW0Qc/fig150.html
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Oct 14, 2010
I am having problems with getting the drivers to work for a geforce 9500gt.To get started Im working with a fresh install of 8.10, and I have successfully installed the driver package for this card from nvidia's site, version 260.The problem comes after I restart the computer. It fails to load. I am able to install the driver and start X and it works greatI can even restart x and it still works. but as soon as I restart the computer it doesn't load. I then need to reinstall the driver. I am curious if anyone has an idea of whats wrong here? I am wondering if it's a possible xorg.conf problem so I will post that below.
xorg.conf file
Section "ServerLayout"
Identifier "Layout0"
[code].....
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Aug 24, 2010
Only from internal lan. I have secondary IP address added for SSL site, and we are natting that address from that outside. I can hit it if I change my hosts file to that local IP on the server itself, but when using external NAT address it never hits the server. But if you telnet to that external address with port 80 or 443 it works.
Here is a sample of my config with servername and ip addresses changed:
<VirtualHost 192.168.150.100:80>
ServerName sample.website.com
ServerAlias sample.website.com
[code]....
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Feb 15, 2011
I have httpd server installed and I need to do redirect all the requests from clients thats start with a http://abc.*.* on to [url]. I know this has to be done with Rewrite conditions but Im at a loss coming up with the right condition. this site doesnt have any virtual hosts configured. Currenlty I only can access the apache test page.
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