Ubuntu Servers :: Handle Splitting Services Up Between Two Servers?
May 29, 2010
I got my hands on a couple old servers. An HP tc2021 and a Proliant ML110. Sure they're ancient, but I thought they would make a couple of great Ubuntu Servers for a new "start up" business I'm trying out. Now I've got to decide the best scenario to distribute the load between the two servers. I'm going to make an internal domain and will probably be running the following: Kerberos, Samba, Apache, Postfix, mysql, bind, dhcp, SVN, GCC, and Nagios. So in summary, I'll have the following roles; domain controller, web server, file server, and network monitoring services. how they would handle splitting these services up between two servers?
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Feb 1, 2010
I'm trying to set up a virtual web server using virtual pc and a net-tuts how to. So I went ahead and downloaded Ubuntu 9.10 Server Edition, but it only comes in 64-bit, and vpc doesn't handle 64-bit. How I can get around this? I have a machine that I could set up as a server, but that is also only 32-bit.
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Jul 23, 2010
i would like to know how many connections per sec/min/hour, xampp can handle. I'm going to run SMF forum on my box, because i'm not ready yet with real server solution. System stats are: G31M-S2C; 2x2GB Kingston@920Mhz; E5200@3500Mhz; 500GB@7200 Seagate, all powered by Lucid x64. In a time i will migrate to a quad, mobo with raid support, etc. but at that point i'm want to know how much connections can xampp handle. Because of the forum nature, i think of auto deleting topics witn no new replys in 5 days for saving place (there will be minimum 1 and maybe max 5 photos per thread, maximum size 2Mb for each).
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Jul 29, 2011
I have been plagued by this for some time. How many times do you need to run chown -R user:www-data or similar to your webroot directory.I have been searching via Google and this forum. I have yet to find a definite answer to handle uploading and creating new files usable by apache2.Scenarios can vary. Some folks put there webroot inside a /home directory. Some users leave the default location as /var/www.I have a two part question.. Why do I often read "Apache runs as user=www-data, therefore files need to be readable by such (www-data)", but the default install in Ubuntu includes an index.html with the following?
Code:
ls -l /var/www
total 4
[code]....
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Sep 8, 2010
It would seem MySQL and VSFTP no longer create pid files and monit requires a pid file to work. Is there any way to force MySQLD and VSFTPD to use pid files or am I out of luck?
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Nov 29, 2010
I recently became responsible for a server running Ubuntu 10.04. I am trying to figure out how its outbound mail service is setup. Everything is working fine now, I just want to document how it is setup so if I need to rebuild the box I can do so without too much trouble when the pressure is on. It is a pretty basic setup, the only outbound mail gets sent from php scripts, the server does not receive incoming messages. Is there a place I can look to see what service is sending outgoing messages?
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Jan 18, 2011
I have three HP diskless thin clients and a Server with Ubuntu installed. I'd like to be able to run the desktop version of Ubuntu on the clients straight from the server, akin to what would be possible on Windows Server running terminal services and thin clients. Is this possible?
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Apr 19, 2011
How do clients handle offline syslog servers?Will the log files be buffered locally to be sent to the syslog server when it comes back online, or will any log data generated during downtime be lost in cyber space?
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Sep 29, 2010
I have a server running 64bit lucid and while trying to get a script to run on boot to start Davmail I appear to have broken something. I have webmin installed but I have been trying to do the majority of things via the command line. I now have davmail starting at boot but a lot of other services don't start anymore, including apache, mysql and webmin. Fortunately SSH still works and I can start apache and webmin from the command line without any problems.
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Apr 24, 2009
Why some application has daemon and some others doesn't. I thought just network application has services like httpd, nfs, cups.... but I just found out that cron, gpm.. and other has it to. why other some other applications hasn't got daemon. Just want to know what sort of application has services.
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Apr 30, 2010
Where can I find a list of services converted to upstart in Ubuntu 10.04? What is the syntax for stopping, starting and restarting these services?
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Apr 10, 2011
How do you enable/disable the autostart of services. For example let's say I know I'm not gonna use apache and mysql for a while and don't want it to autostart anymore how do I disable it ?
And then once it is needed again how do you enable the autostart again ?
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Mar 20, 2009
A FC10 server hung and had to be power-cycled. I suspect it hung because of an nfs mount timeout.
Now it does not boot. The error is libc.so.6 not found. Kernel panic. Attempting to kill init.
Booting under rescue:
ls: cannot access libc-2.8.so: Stale NFS file handle
Is there a way to reboot to a clean state? There must be some NFS cache file.
I also tried to cp rescueCD:/lib64/libc-2.8.so to the old lib64 dir, but get the same "Stale NFS file handle" message.
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Nov 10, 2009
[Note: I'm typing this entire thing out. It probably isn't 100% verbatim. And I am using an older version of the kernel because 2.6.30.9.96 was not behaving either.]
Code:
BUG: unable to handle kernel paging request at efd86f5c
*pde = 00000000
[code]....
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May 30, 2009
I can view my website, and ssh in when I've logged in already at home, but if the system gets rebooted, and gets as far as the login screen, I am not able to view the web site or ssh in. I was wondering how to set things up so thatthese services are running independent of logging in.
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May 7, 2010
I downloaded the latest 10.4 server CD with the intention of running a small Ubuntu Enterprise Cloud. I am following the directions here: [URL] Ive got 2 laptops that are capable of the tasks assigned to them. Both have dual core Intel chips that are VT enabled, 4GB of RAM, 250GB hard drives. Ill use one ( "server" ) as the front end server running cc, clc, walrus and sc.The other one ( "node1" ) will be the only node controller on my little network. Ive also got another laptop as a client, running euca commands to make instances and what not.These three laptops are connected to a switch. server is 192.168.1.100, node1 is going to be 192.168.1.110, the client laptop is 192.168.1.120.
the server seems to install fine, I select Install Ubuntu Enterprise Cloud, use it as the Cluster, give the cluster a name and 10 IPs to assign, 192.168.1.150-192.168.1.160 After the server is done installing and reboots, I boot the node machine off the CD and again select Ubuntu Enterprise Cloud. It's at this point the install craps out, because it does not recognize a cloud computer on the network.
Indeed, as I go to the server I run
Code:
ps -aux | grep euca
and see nothing running. So I start the eucalyptus service, and run
Code:
sudo euca_conf --list-clusters
and nothing shows up. Ive done some googling, ran some more euca_conf commands, registering the cluster, enabling walrus, cloud and sc. I can access the web gui on the client laptop, then restart the node install on the node laptop. This time it does see the server as a cluster controller, but when it tries to fetch the preseed file, it seems to not know the cluster's IP, as the red box that complains about the lack of a preseed file lists the URL as [URL] ( or whatever the file is called, I dont have the error in front of me. )
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Mar 31, 2009
I am running a server init3.During boot I would like to start some services inside screenie. IRC chat, rtorrent etc.How do I do this?
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May 29, 2010
I have Apache Server working online under Fedora Core 6. But before I installed and configured everything, I've been testing in Fedora 12. The problem surges here, when I start the httpd service, every supuse 404 action on a web browser, takes me to localhost. I mean, if I enter google.com, no error, just goes to localhost, http://asdasd, no error, gives back localhost. I used to ignore the problem 'cause I thought it was a problem on my apache, but when I installed the Server on the Fedora Core 6 machine, I found that I have the same problem there. Of course, it only occurs when I am browsing through the same machine that has httpd started. Does anyone know how to change that??
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Jan 29, 2011
i have installed apache and bind on my server and i've also registered a dynamic domain through dyndns as jan27.dyndns.biz. i am able to successfully host my own webpages using this method.
then i registered a domain name (lets call it "blah.com") through namescheap.com and have registered my nameserver to my ip address. after reconfiguring the my external zones in bind and restarted my services, i am unable to reach my webpages through the new domain name.. www.blah.com and blah.com would lead me to a opendns.com page but interestingly ns1.blah.com loads my webpages successfully.
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May 9, 2010
so my server is doing fine, but there is one odd thing I would like to fix. When I start and stop services, the CPU is maxed out for about five seconds each time. The services start the same speed, but it still does this. Small things like lm_sensors don't do this, just things like httpd and sendmail. THis server was upgraded to Fedora 11 with a netinstall CD a few months ago.
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Oct 7, 2010
I have a good grasp on windows server 2003 but I don?t want to pay outrageous license fees for software and services and clients. I am newish to terminal as I only know a few commands. I have no problem installing services for the server edition for 10.04. Its just understanding whats going wrong to troubleshoot. I guess there is you guys and I have good working knowledge of Cisco's IOS's so I understand things like routing tables and interfaces and such for troubleshooting.
Questions I have... Can I install the desktop version of 10.04 and just install the server services? I was looking at the server guide [URL] and would like to know if these can all be installed on the desktop edition without too much trouble. I would imagine one could just use the server edition but I would really want a graphical user environment for some of the activities, if not all that I can. This would be becuase on my skills in the CLI. I priced out a server from Dell. I fits my budget perfectly if I go the Ubuntu 10.04 route. I was wondering if anyone sees any conflicts with the hardware for the Ubuntu OS....
[Code]....
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May 10, 2010
i found this video, and i really want to do the same. *newbie needs to learn [URL]...my question is, what need to be installed and how?
is there any specific configuration to make it works?
and will it work if i want to connect from Ubuntu to Fedora ?
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Apr 1, 2011
I'm curious if anybody can shed some light for me in this department. We're in a large environment with a Windows DHCP Server. We have been tinkering with LTSP on Edubuntu as thin and fat clients. It works great, but right now we just have 1 server handling the lab, which works fine unless we want to expand, which may be very possible.
These are the instructions I received:
Login to your windows server and load the DHCP configuration screen
Create a DHCP reservation for the MAC address you obtained
Add the configuration options below to enable the machine to boot from the LTSP server
017 Root Path: /opt/ltsp/i386
066 Boot Server Host Name: <ip address>
067 Bootfile Name: ltsp/arch/pxelinux.0 # Specify CPU architecture in place of 'arch', for instance 'i386'
From: [url]
I'm curious, what if I want to have multiple Ubuntu servers on the network that I want to have bootable? For example, let's say I have 3 labs, and 3 servers. Server A to Lab A, Server B to Lab B, and Server C to Lab C. I want all C's computers to boot to C, and B to B, A to A, etc.
1 - How would I add multiple entries on the Windows DHCP Server to allow all 3 (A B C) servers to boot?
2 - How would I be able to isolate the clients so ONLY Lab A clients boot to Server A, etc?
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May 25, 2011
I am looking for a version of vmware that manages 2 severs at the same time and that mirrors them such that if one goes down we can still work on the second and of course it also works as a backup. Also, must work on a ubuntu server I have looked but there are so many version that I don't know which one is the best.
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Mar 4, 2010
(Mods: If you feel this belongs more in the Games or Wine discussion area, please feel free to move. This question does intersect many areas, so was unsure where to put)
I have a funky server Ubuntu 9.10 Enterprise setup where I have X on all the time (using Xfce4 - not Xbuntu) with latest wine so I can run Windows only based game server executables. One of the applications is a simple dedicated racing game server made by the company I work for that works perfect in wine (unfortunately, the full 3D game client does not, so its a windows only game). The other is more just to test, runs Serious Sam HD dedicated with wine with a steam client active in background since SSHD Ded requires a steam client logged in (just create a dummy account).
Im getting some lag issues with the SSHD on the end-users client side. Unsure if its related to it being a more complex game and using wine to translate slowing it down. Things like tiny warps once in awhile, and the ping of clients kinda jumping around.
Im pretty sure my network settings are ok. Maybe not fully optimized for every bit via ipv4. Still though. This 1U Opteron server is in a ISP with a full 1000 up and down. Ports are locked out that aren't being used. I do have apache going, but its nothing strenuous. The CPU isnt used overly so. Maybe peaks out around 60% under strain, but mostly 20-40%. Memory use is about 550-700megs for SSHD itself. Given, it only has 2 gigs total at this time, but I still usually have near a Gig of memory available at most times.
I admit newbness of linux servers in general. Was reading about other game servers like CS:S requiring a ticked kernel near 1000 to get the least amount of lag. Some even saying they dropped the tickless options of the newer 2.6 kernels on purpose because they produced lag. Was checking on the history of newer Windows Server like 2008 and they still use a ticked OS, though a more optimized version.
So this boils down to should I be running a Ticked OS kernel to run a more complex Windows based dedicated server? I haven't tried thus far, well because I am again a bit of a n00b to all this. That and I'm not sure you have to tell wine or the SS:HD dedicated exe itself to run at a full ticked rate (no option I have seen for a command line function in the SS:HD itself).
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May 3, 2010
I have Webmin installed on an Ubuntu server. I currently have a successful apache server running on port 80, however I want to create a virtual host on port 81. When I try I go to servers->Apache Webserver-> Create Virtual Host I change the port to 81 and the document root to /var/port81www then I click create. How ever when I goto 192.168.1.5:81 (local ip, I know I have to port forward but its not even working local) it does not work.
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May 26, 2010
I handle several hundreds of domains. Mails are handled with google apps (but previously I used to have a full postfix/courrier setup with virtualhosting). Now what I need is to be able to send mail (newsletter etc...) from my web servers, but I don't need to receive mail on these servers.
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Sep 5, 2010
I am running apache2 and tornado web servers on the same server with one ip address.
The apache2 listens on port 80. Tornado listens on port 8888. I want to redirect requests from a specific ip port 80 to port 8888. I don't have the ability to change the port request on the device. It wants is looking for a web server on port 80.
Any other web server request should go to the apache.
I tried adding the following to /etc/ufw/before.rules
When I run iptables -L it doesn't appear. I have disabled and enabled ufw with no help.
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Oct 30, 2010
Now that I have more computers I am looking at new solutions to manage the proliferation.My Linux machine has been replaced and its now much more powerful than before but its still a 32-bit processor. No problem as I am not using anything unorthodox outside the LAMP stack with a few PHP add-ons to support graphics.I use SAMBA so I can edit web sites easily with Windows tools.So now given a Windows Server, who should be king server and have everybody on the same page so to speak.
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Mar 24, 2011
We have 5 servers here. What we are going to setup is not a Web server. We want to combine these servers to parallel calculating. I have searched for some information. May be cloud computing would be our choice. I don't know whether I am right.and if I decide to use the cloud, is Ubuntu server my best choice?Can anyone give me some clue about this?
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