Welcome to the Linux Foundation Forum!
Need of urgent help with website server
overdrivemachines
Posts: 4
Hi
I have two servers running Red Hat 3.4.6-11 CentOS release 4.8 (Final); lets call them dev1 and dev2.
Dev1 is running a website which uses tomcat and oracle and other software that Im unaware of. Dev1 is going to go offline because it needs some maintenance. So, while dev1 is offline, I want dev2 to do the job. I have access to dev1 and dev2 through putty since they are at a different location in town. What steps can I take to make this happen?
0
Comments
-
you will need to install all necessary software from Dev1 onto dev2, copy the database and website files, modify the webserver config file on dev2 to support the new site then re-route the dns entry to the new server.
I recommend setting up a virtual installation that clones dev2 in virtualbox, then setting up a bash script for you to document the copied files and directories, then through trial and error you will end up with a perfect script that can be used to push the final file migration.0 -
Thank you for your response. Im unaware of all the software dev1 is using to run the website. If you know how to do it, can I hire you or anyone on here to do it, Im willing to pay for it.0
-
I am sorry, but I do not do contract work, all I can do is help guide you to resolve the issue yourself.
First to get a list of all software running on the server you can run the command "rpm -qa | less"
To clone the oracle server a guide is located at http://www.dba-oracle.com/oracle_tips_db_copy.htm
TO move tomcat I would recommend copying the configuration file data data file directories to the new server.
Or you can select to just clone the hard disk from server1 to server2 which will move all files.0 -
I think cloning the hard disk from server1 to server 2 is a good idea. What do I use to clone the servers and is it possible to clone hard disk from server1 to server2 remotely?0
-
overdrivemachines wrote:I think cloning the hard disk from server1 to server 2 is a good idea. What do I use to clone the servers and is it possible to clone hard disk from server1 to server2 remotely?
You cannot clone a disk that is in use, so the best recommendation would be to boot into a Linux based live disk, run the appropriate dd commands to copy the hard disk to a file on a remote server or external HD, then boot the same way on the other machine and copy the entire image over the current disk images.
And example of dd command would be:
To copy the contents of /dev/sda into the image file disk1.img
"dd if=/dev/sda of=disk1.img bs=512"
To Copy the image disk1.img over the disk in /dev/sda
"dd if=disk1.img of=/dev/sda bs=512"
The breakdown of the command is simple:
if - means input file
of - means output file
bs - means block size, I choose 512 bits at a time to make it faster
I know there are tools that allow remote cloning, but I have not used them.0
Categories
- All Categories
- 177 LFX Mentorship
- 177 LFX Mentorship: Linux Kernel
- 750 Linux Foundation IT Professional Programs
- 373 Cloud Engineer IT Professional Program
- 169 Advanced Cloud Engineer IT Professional Program
- 74 DevOps IT Professional Program - Discontinued
- 4 DevOps & GitOps IT Professional Program
- 99 Cloud Native Developer IT Professional Program
- 7.6K Training Courses & Learning Paths
- 1 AI & ML Training
- 1 Blockchain & Decentralized Identity Training
- 3 Cloud & Containers Training
- 1 Cybersecurity Training
- 2 DevOps & Site-Reliability Training
- 1 Linux Kernel Development Training
- 1 Networking Training
- 1 Open Source Best Practice Training
- 1 System Administration Training
- 1 System Engineering Training
- 1 Web & Application Development Training
- 792 Hardware
- 202 Drivers
- 68 I/O Devices
- 37 Monitors
- 95 Multimedia
- 173 Networking
- 91 Printers & Scanners
- 87 Storage
- 769 Linux Distributions
- 81 Debian
- 68 Fedora
- 22 Linux Mint
- 13 Mageia
- 24 openSUSE
- 150 Red Hat Enterprise
- 31 Slackware
- 13 SUSE Enterprise
- 356 Ubuntu
- 465 Linux System Administration
- 31 Cloud Computing
- 73 Command Line/Scripting
- Github systems admin projects
- 98 Linux Security
- 78 Network Management
- 101 System Management
- 46 Web Management
- 106 Mobile Computing
- 18 Android
- 73 Development
- 1.2K New to Linux
- 1K Getting Started with Linux
- 392 Off Topic
- 121 Introductions
- 181 Small Talk
- 29 Study Material
- 955 Programming and Development
- 310 Kernel Development
- 627 Software Development
- 983 Software
- 375 Applications
- 182 Command Line
- 5 Compiling/Installing
- 68 Games
- 317 Installation
- Archived
- 2 LFD140 Class Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)