CentOS 5 Server :: Implement Virtualization Using A Remote Connection?
Jun 26, 2009
The word on all lips are "virtualization" so I decided to smell this flavor.
I have a machine running CentOS 5.3 64bit and I have unlimited access to this machine, but I don't want to reach it physically.
Is it possible to install and maintain a virtual medium using ssh or other remote connection?
When I installed the OS I have selected the packets regarding the virtualization, but now from where can I start?
Is somewhere a guide for doing this?
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Mar 31, 2010
I installed the latest version of Centos 5.4.It came with Xen version 3.0.2 I think.I am running it on a Dell R510. It supports hardware virtualization.I was able to virtualize Windows XP and Windows 2003 server on it by selecting the install from DVD option.I was having problems trying to get a PCI DekTek card seen by the virtualized Windows domains so I tried to upgrade XEN to 3.4.2.I used the repos available from Gitmo and it went easy.
The only problem is now that when I try to create a "New virtual host" it only allows me to use HTTP, FTP option and not the iso or DVD option. They are greyed out. I was wondering if anyone has had this problem and might know a work around for the Xen 3.4.2 problem. Perhaps a better location for the kernel or something.
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Feb 2, 2011
I have a customer who has (currently) three servers running Centos 5.5, one running Windoze 2003 and around thirty or so workstations running XP Pro.
I've just been reading about RedHat's product - RHEVD and was wondering of anyone knows if this product (or anything similar) is aavailable under CentOS.
Basically what we need to be able to do is to virtualize the XP workstations so that the staff can connect via a browser (inside the office or off-site - or for that matter anywhere) and be presented with a standard desktop.
I know I can achieve this using Citrix XenDesktop or VMWare View but I would prefer to use a FOSS solution if one exists. Having said that it has to be robust and well past Beta
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Nov 16, 2009
I have a server Linux/Centos 5.3 who I have formed it like server of data with samba for a network with 5 Windows XP terminals; desire to know if it is also possible to form this equipment like server anti-virus multiplatform so that it can look for virus (and clean) to the terminals win xp.
I was looking for by the network on this subject, but I have not had favorable results, please if somebody could help with some Link or tutorial me that has found.
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Jun 26, 2011
How to implement the web in my home in centos? that web should be access by out site using public IP? is it possible? how to do that?
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Jun 11, 2009
I had just put the last touch on a snort, mysql, apache, barnyard, base isntall to CentOs 5.3. I noticed that ifconfig displayed an odd virtual nic, and I wanted as little running on this machine as possible. I don't remember specifying that I wanted XEN installed. And on the old lowend machine that is powering this server, Virtualization was the last thing I wanted running on it. I did a google, discovered that the way to remove XEN completely (yum uninstall xen' only removed 'xen' but still, oddly, xen was running after a reboot. Talk about perplexing.
[Code]...
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Feb 3, 2011
I am having trouble connecting to one of the VM's through ssh from base machine all of a sudden. All I get is an error : ssh_exchange_identification: Connection closed by remote host
--IP/Hostname crossed out --
[root@XX-XX02 ~]# ssh -v 1XX.1X.5X.1XX
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008[code].....
Saying that the problem is only with ssh would be wrong as I can't seem to telnet or ftp it either. But I can ping it fine.When I try to login to that VM through console, it won't even let me login. The screen would flash for a sec and the same login prompt would reappear. I am not sure what exactly happened as it was working fine before.
OS version: CentOS release 5.5 (Final)
uname -a: Linux XX.XX 2.6.18-194.17.1.el5 #1 SMP Wed Sep 29 12:50:31 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
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Feb 3, 2011
We have 2 servers, 1 is the webserver and the other is the Mysql server.
When transfering a 2GB file from the webserver to the Mysql server.
The webserver's connection to the mysql DB server dies completely.
Need to restart the MYSQL process in order for it to come back online.
During this connection downtime, when using phpmyadmin on the mysql server shows no problem running queries etc.
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May 14, 2011
I implemented a SSL client using openssl on Linux and it's working fine i am getting response from server...
But my problem is I have a separate thread for each request comes form front end and i have to do SSL communication in each thread, for this i have to create a separate SSL Context for each thread and this is taking too much time hence my transaction is getting delayed
My question is can we implement Persistent SSL connection where i will do SSL Handshake only at the time of application startup and use that connection in all the threads....
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Feb 5, 2009
telnet localhost the output is...
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused
I don't understand what is the problem. Its not configured properly how do i configure it?
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Jun 8, 2010
what is the correct command on a mysql command line to alllow mysql to alllow remote connection on a server
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Feb 11, 2009
I'm trying to connect with my server via telnet, but when i sent the command (telnet xxx.xxx.xxx.xxx Port) doesn't works and shows then follow error: Unable to connect to remote host: Connection refused, It happens with any port. Is strange but my telnet services works (telnet xxx.xxx.xxx.xxx), In addition, i tried with firewall enabled and disabled and the problem still happens. My centOS run on virtualbox.
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Aug 8, 2011
I have two Centos 5 servers one running Asterisk with PHP installed and another sever running as a MySql Database server, at the moment when I try run simple script to see if I can connect to the remote server I get the following error.Quote:Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
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Jun 14, 2011
I want to connect to my Linux debian server, via Remote desktop connection, but when I give IP of my server and click connect, it fail, it says can't connect to the remote computer and below 3 reason.
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Jul 29, 2011
I deleted my windows and now I am alone with ubuntu I use them before and now I can say that they are really awesome, basicly I want 3 things that I am using and then it will be really awesome.
- Remote Desktop Connection In Windows Server.
- A Virtual Camera Like ManyCam
- Putty Client
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Jul 27, 2010
I wish to connect to MySQL using an ODBC connection and I'm using isql to test. On the server connection using isql to local host is sweet however the problem is the client.Okay my set up looks like thisOn the server /etc/odbc.ini is[MySQL-scopus2008]Description = MySQL citation databaseDriver = MySQLServer = localhostDatabase = scopus2008Por
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May 5, 2011
Is it possible to restrict telnet connection from remote to my server(linux -centos5)?
=================
Ex : [root@localhost]# telnet 10.0.0.33 80
Trying 10.0.0.33...
[code]...
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Apr 2, 2011
I can't seem to remove rights for a remote root connection. Below you can see that the rights are present before and after the successful revoke command. I am using the correct command.
[Code]...
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Mar 14, 2010
I have a webGUI in php where users can make certain settings. How can I edit a file on a remote server from my php webserver? Currently I use my FTP client, vsFTPd and a chrooted user in a specific directory where the file resides. I think this is pretty save as long a nobody else uses my FTPclient. How can I make changes to this file on the remote server from within my php-code on my webserver ?? (so that not I need to make the changes but my users can do it from a html-form) I found this but the credentials for the FTP-connection are plain :
<?php
$file = fopen ("ftp://loginasswd@server", "w");
if (!$file) {
echo "<p>Unable to open remote file for writing.
";
[code].....
I use https for the webGUI, but I guess this does not mean the connection to the remote server will be encrypted also ? Can I use my FTP-user (has no shell) from within php to edit the file ?
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Apr 3, 2009
i'm a familiar with Linux environement ( fedora 10 user ) and i got a project in a training where i have to create a cluster with two nodes where i have to set up a number of VMs that will run applications such as ( Samba, Ldap, Zimbra, ...) but i don't know how to virtualize on top of a cluster ! i would like to know how that can be done, and how is it possible to let the VMs get ressources ( RAM & CPU ) from the two nodes ??
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Sep 22, 2009
I chose virtualization when installing Centos 5.3. The kernel I got is 2.6.18-128.el5xen My plan is to use KVM, I disable xend service. I don't need a xen enabled kernel. How do I update the kernel to a non xen one?
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Aug 14, 2010
I am having trouble to make my SSH server working with remote machine.
Code:
telnet 192.168.1.102 22
PHP Code:
[Code].....
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Feb 13, 2011
I am not able to connect to remote server through secureCRT . my local team has said that server is working fine . but I am not able to connect it remotely . what more i can do to connect it to server
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Mar 23, 2011
We have one FTP server. Users are uploding files to the perticular directory remotely. but today some users got below error message.
421 Service not available, remote server has closed connection.
(vsftpd service is up and running) What are the possible causes for this error and from where I should start troubleshooting?
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Feb 18, 2009
I am able to telnet to the server via a remote connection, but for some reason, it will not accept mail. ere is the bounce back email I am getting.Quote:This is the mail system at host smtp.mydomain.net.I'm sorry to have to inform you that your message could notbe delivered to one or more recipients. It's attached below.For further assistance, please send mail to postmaster.If you do so, please include this problem report. You candelete your own text from the attached returned message.The mail system
<root@mydomain.net>: temporary failure. Command output: pipe: fatal: pipe_command:
execvp /usr/bin/perlbin/vendor/spamc: No such file or directory
Reporting-MTA: dns; smtp.mydomain.net
[code]....
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Jun 30, 2010
I was trying to install PEAR on a remote Ubuntu server using putty. I ran an apt-get install php-pear command and everything went smoothly, but now i cannot access the website as it says 'can't establish a connection to the server' and in firebug, it shows the status 'aborted'. I even tried adding the pear path in php.ini file and restarting the apache server but no luck.
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Jul 14, 2011
i done desktop config in ubuntu server 11.04 and connected via tightvnc,uvnc and in remote desktop viewer from another ubuntu machine also. I am not able to access(connect) the server in GUI mode(when monitor is removed) but i putty is working fine in cmd line.
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Jul 29, 2010
I'm currently in the last steps of migrating a CentOS mailserver to the x64 version.However, under the old 32 bit version, I was using XRDP to access the Centos box from my Windows boxes.However I can't seem to find the XRDP package in the standard repos so this is prompting me to look at possible alternatives (XRDP was incompatible with my windows 7 box anyway soI had to RDP to another server of ours running 2003 to RDP into the mailserver which was far from ideal).Basically, I'd like to be able to seamlessly access the Centos box with a standard RDP client.
I know VNC Server/Clients would be an option but RDP gives me the freedom of any windows box being able to access the server on the same adress/port without installing software on any windows box I encounter.Are there any viable alternatives to XRDP ?There's no "add-on" to VNC server that could enable it to accept RDP connections ?
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Aug 30, 2010
This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
xx@xx.com
SMTP error from remote mail server after initial connection: host [URL] [ip address]: 550 Access denied...
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May 4, 2009
I have just installed CentOS 5. I have set mysql database to access from remote machines. But now the problem is it is not connecting from the local machine now.
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