Ubuntu Servers :: How To Switch Clients From A Normal Server To A Cloud
Feb 4, 2010
what cloud computing is and i think it can help me with some of my clients i want to switch my clients from a normal ubuntu server to a ubuntu cloud. as of right now i have to send out a bill to them and if they dont pay i have to shut down there service till they pay. what i would like to do is to have a cloud where i can sell them based on what they use not a set price like it is now. and have them be able to pay there bill on the cloud and if they miss the bill then the cloud can shut off there service till its payed.
i dont know if this is possible and i have looked everywhere and all i can find is info on other businesses billing and now how to set up a cloud to do this. i wish there was some kind of tutorial for this. if anyone can direct me to some good notes/tutorials that would be very helpful. this could be a big changing point in my business if i can do this. it would save a lot of time and cash.
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Jan 12, 2010
what kind of network between cloud controller and nodes, is required for a proper cloud installation? I mean, Does all machines needs to be in same network, in same lan, or may be in MAN or WAN ? how much should be network throughput? 1Mbit/sec , 10Mbit per sec, or 1Gbit/sec? I ask because I need to know the possibility of running nodes on different locations.
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Jul 15, 2010
What's the difference in terms of scalability? We would be hosting videos and FOSS collaboration tools (wiki, forums, etc.) on 4 separate servers. If I install the cloud server, I will need to install the GUI anyways. The servers are all brand new
- 2x Intel Xeon quad cores 2.4 GHz
- 12 GB DDR3 RAM
- 4 Ethernet ports
What benefits would cloud server provide over desktop and vice versa?
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Aug 9, 2010
I have multiple video streaming servers(Red5 running on machines internally on LAN. For different subdomains.Ubuntu 10.04 The front end to the is apache2 on a Bastion Host. To be able to reach the streaming server I embed a javascript in HTML pages as follows
Code:
<embed .....
var="rtmp://site1.my_domain.com"
>
[code]....
how will I make sure this rtmp request is mapped to a port different than 1935 as there are three other streaming servers which are also to respond to their respective requests.
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Mar 17, 2011
I am in the process of setting up a couple of virtual servers in a cloud environment. I am currently working on my application server (Server 1) and am stuck on the creation of my ruleset for this server.
I need to allow SSH, FTP, HTTP, HTTPS, and PING on this server. This server will also need to be able to talk with a couple of database servers as well as a memcache server (all internally within my cloud environment)
I have been reading on iptables, since I have never messed with them before, and have come up with the ruleset I will paste below. I have taken other steps to secure my server...changing ssh port, not allowing root to login via ssh without logging in as a user, turning off unnecessary daemons, editing my hosts allow/deny files, just to name a few.
I am a newbie to iptables, so I would love a bit of helpful advice, criticism, and even a good explanation why I should add or remove or edit something. I really want to know the how AND the why!
[Code]...
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Feb 1, 2011
I am using ssh server to connect to my Ubuntu desktop. I opened the file sshd_config and change my port number of the server.I want to put a limit on the number of clients in the ssh server.
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Aug 25, 2009
My server and clients (NFS and NIS) are in continuous attack via ssh. Somebody is trying to guess password and login, and making port 22 busy.What are different ways to stop this attack?I am thinking to block this ip in iptable but I have no good idea because I have not done this before. Any special consideration do I have to take while doing this thing? How is it done and which file does it modify?
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Mar 18, 2011
I installed and configured LDAP server and client on RHEL5 successfully. Problem is that when I add more than one user on server and clients, It shows error 'invalid user'.When I run the command:-#chown -R user:users /home/user, It shows error 'invalid user'. by step for adding and modifying more users in ldap servers.
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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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Jan 31, 2010
I'm trying to setup a server at home, it has some practical implications, but largely it is just to take a stab at it. But I need the help of someone with more experience than I in defining exactly what I'm looking to do.
Here's what I have: old PC running Gutsy server connected to router. Several laptops at home connected via wifi to router. All laptops running either Windows or Ubuntu. Here's what I'm looking for: The server centralizes file storage for all clients. I would likely incorporate a RAID and some synchronised imaging of the files. I also want the server to create disk images of the clients hdd, regardless of client OS.There would also be some shares that would be publicly accessible (myself and friends accross the country would be able to access the same drive).
So I was thinking something like what corporate environment would be nice, you log into a profile that exists on the server. Like a dumb client...all data would be stored on the server. But I'm thinking that's more like a network boot and wouldn't work via wifi (or would it?). Also that wouldn't lend itself well to laptops used on the road in areas without net access. now I'm thinking each client would have its own locally installed OS, and they would just access networked shares. I could store sensitive files on the shares, but that wouldn't provide complete backup solution for each client.
Without rambling on anymore, anyone care to throw out some ideas? I'm really just looking to see if I can do what I want. The focus is on centrallizing files, securley backing up data and client OS's and ability to restore said images quickly.
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Feb 27, 2010
I'm attempting to run a DHCP server on my home network to enable PXE booting for ethernet clients, but I'm having quite a few issues getting it all up and running. I'm not entirely sure what is wrong, but I keep encountering errors in syslog as follows:
Code:
Feb 27 02:26:46 servnerr-1 dhcpd: Wrote 0 leases to leases file.
Feb 27 02:26:46 servnerr-1 dhcpd:
Feb 27 02:26:46 servnerr-1 dhcpd: No subnet declaration for eth0 (192.168.1.3).
[code]....
Networking is not exactly my strong suit, but I would like to get this up and running if at all possible.
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Sep 19, 2010
I have read just about every page about the UEC project, and I now know everything about it, except... WHAT IT DOES! I can't seem to find a coherent example of what it does. To the best of my understanding, it runs a virtual machine across multiple servers. Allowing the VM to use the RAM, CPU, and HDD resourced on all servers involved.
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Jun 7, 2011
Can a Virtual Machine, instantiated in the Ubuntu Cloud (UEC), use resources from more than one node?
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Oct 24, 2010
So best if you take a quick look at this image, which describes a network topology: [URL]
I am behind a firewall in the university dorm and many ports are banned. Well pretty much everything besides 80, 8080, 110, 21, 22 and the most basic ones. So I'd like to get around that.
I have a home server that is connected and reachable on the internet. So if you type in 90.90.90.90:80 into a browser it's reachable.
The task would be to set up a port forwarding or how you call it in a way that if I access my home server from the dorm or anywhere, it would act as a forwarder and forward that packet or connection to the 80.80.80.80 server on a specific port, say 2083 so that I can even access my hosting Co's admin user interface.
To sum it up: I'd like to access the 80.80.80.80 server from the dorm on port 2083 which is blocked by a firewall, but I have a home server that is reachable on non blocked ports. The home server has no ports blocked.
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Aug 29, 2011
I can switch to root by typing "su"After having done something, I hope to switch back to original normal user. What's the command,
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Jan 4, 2010
First time setting up Ubuntu Cloud system.
I get error during install when searching for and trying to add node from the Cloud Controler: New node found on 192.168.1.182:add it? [Yn] y Connecting to 127.0.0:8774...failed: Connection refused. Error: you need to be on the CC host and the CC needs to be running.
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Mar 19, 2010
We do have a problem on running the images on the cloud server.. how we can use or how we can run the eucalyptus cloud images using elastic fox? or there is another simple way to activate those images provided by eucaplypus... thanx in advance... and were trying to activate the private cloud only..
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Sep 4, 2010
differences between Ubuntu Cloud and other virtualisation systems such as VMWare ESXi, and why one would be used in preference to another?
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Oct 15, 2010
I have installed Ubuntu enterprise cloud on two machines(Cluster and node)and trying to set up an image and test my internal website in private cloud. if there is any documentation or any steps?
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Jun 10, 2010
Just this Konqueror issue bothers me really bad. So decide to share it here and see if anyone has a better solution.
Java support is really poor in konqueror.
For example,
1. on webex.com and just try to join a test meeting. It never opens the meeting window however there is no error or any kind prompt.
2. facebook.com, if you try to upload a picture, you have to choose simple uploading tool in konqueror in order to do the job.
Why java can not be made work properly like in firefox and chrome? Is there any critical hurdle that I did not know?
My solution: use konqueror for normal browsing and switch to firefox or chrome for java sites. This bothers, right?
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Jan 26, 2010
I have collected a number of computers over the years, and now I would like to put them to good use. I considered UEC, but many do not support hardware virtualization and all I really need is storage. Over all the machines, I estimate that I have 4-5 terabytes of storage, all going to waste because each one has relatively low storage space. Is there any way I could setup a redundant storage solution that utilities these machines in a networked system?
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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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Dec 3, 2009
I have samba server(Fedora 11) here,but when I want to access to it from WindowXP ,the first time you need to tap in user name and password.But the next time ,you automatically log in Samba server with the user name as the first time you used. But I have not clicked the "Remeber me " option when I logged in.I want to switch user when I want to log in samba,does anybody know what is wrong ?
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May 26, 2010
I am having a few websites running in a Reverse Proxy scenario on Ubuntu Server 10.04. The configuration is like this:
Code:
|--------------192.168.1.1
| (site1.abc.com)
|
|--------------192.168.1.2
| (site2.abc.com)
|
|
|
|
|--------------192.168.1.3
| (site3.abc.com)
|
|
|
|
|--------------192.168.1.4
| (site4.abc.com)
(Public IP ) |
A-------------------|
(reverse proxy server) |
(192.168.1.25) |
|--------------192.168.1.5
| (site5.abc.com)
|
Except one all websites are running properly and being redirected to their respective domains.
Following is the configuration which I used for each site define on server A a vhost file which contains following
Code:
# ProxyPass / http://<Ip of Server>
# ProxyPassReverse / http://<Ip of Server>
So if I have 5 websites then I have 5 vhost file on the gateway in above diagram A and in each of those file as above root of site is redirected to internal IP. 4 of them are running properly. The fifth website is running on port 8080:/keyword. So in its vhost file on gateway I defined
Code:
# ProxyPass / http://<Ip of Server>:8080/keyword
# ProxyPassReverse / http://<Ip of Server>:8080/keyword
I can see on Lan http://<Ip of Server>:8080/keyword but when from internet I try to see:
http://site5.abc.com
I get redirected to a page is https://site5.abc.com:8443/ and it says
Code:
The webpage at https://site5.abc.com:8443/ might be temporarily down or it may have moved permanently to a new web address. The site5.abc.com has a requirement to be run at port 8080 internally and it is not a Ubuntu server.(Red Hat based server). While rest all are Ubuntu servers including gateway A.
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Aug 8, 2010
I am a novice in the world of cloud and recently managed to configure Ubuntu 9.04 Cloud (using kvm, eucalyptus and other packages) successfully at my college for my project work. The problem is that i can only manage to view the running instance using rdesktop from any remote machine. Is there any way to do this other than rdesktop/logs? Secondly, I want to develop a application on the lines of google docs as a part of my project. Is it possible to install apache server on this virtual instance, and host a website? How will the client access this website? Which frameworks would be required or do I have to develop one?
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Sep 1, 2011
Is openbsd (4.9) "server" compatible w/ ubuntu clients? note: have had no problems setting up ubuntu <> ubuntu sever client but having trouble w/ openbsd <> ubuntu client. "pernission denial" messages from openbsd server
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Jun 15, 2011
I have installed the Apache, PHP and MYSQL in the rackspace cloud server environment. Can anyone please guide me How can I configure email server in that with postfix or some other with multiple domain.
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Feb 17, 2009
when I boot my pc with fedora 10, it displays the white cube, although i can rotate it but it does not seem to work i cant see any desktops. How can I switch back to the normal desktop view or disable compiz fusion ?
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Nov 27, 2010
i have installed ubuntu cloud server, but this server dosent have gui.
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Apr 14, 2011
To be short and to the point, I want to setup a service with my clients and allow them to back up to one of my servers. What I would like to do is allow client connections via WinScp to a ssh server that has home directories for each user to backup data. If users want their data I would like them to be able to connect to my apache web server (same as ssh) and download from anywhere.
Is there a way for apache to link web directories on the server to the actual /home/user account and use the same login information/authentication?? Does this make sense? I really appreciate the help. I am not a developer or else I would simply develop a user friendly front end for to an ssh server. Since that is the case I think this is the best solution for me, as well as the easiest for the client.
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