I know on windows, you just add a new HDD, right click and select drive mirror, on an already fully operational box.
On Linux I know you can setup software raid during the initial installation.
Is there any way to add mirriroing of any kind on an already installed system?
I am in a somewhat complicated situation... I wanted to order a custom server with hardware 3Ware RAID controller but after over a month of waiting I was told the HW RAID controller, as well as any other 3Ware controller they tried, does not work with the motherboard used in the server from Fujitsu-Siemens and that they simply got a reply from FS that the controller is not certified to work with their motherboard.
So although I'd prefer a HW raid, I am forced to either choose a different webhost or setup a software RAID. The problem is, I haven't done that before and am somewhat moderately...scared
I have read a lot of the info about SW RAID on Linux that I could find through Google but there are some questions unanswered still. So I thought that perhaps some of the more knowledgeable WHT members could help me with this problem...
The server specs will be:
Core2Duo E6600 (2.4Ghz), 2GB RAM, 6-8x* 250GB SATA II HDDs, CentOS 4.4 or SuSe, DirectAdmin
* I prefer 8 HDDs (or actually 9) over 6 but I am not sure if their server chassis can hold that many HDDs, I am awaiting answer from them. They don't have any other drives beside the 250GB ones so I am limited to those.
The preferred SW RAID setup is to have everything in RAID 10, except for the /boot partition which has to be on RAID-1 or no RAID I believe, plus one drive as hot spare (that would be the 9th drive). I am quite sure they will not do the setup for me but will give me access to KVM over IP and a Linux image preinstalled on the first HDD so that I'll have a functional system that needs to be upgraded to RAID-10.
How do I do that? The big problem I see is that LILO or GRUB can't boot from a software RAID-5/10 so I will have to mount the /boot partition elsewhere. It's probably terribly simple...if you have done it before which I have not. I have read some articles on how to setup a RAID-5/10 with mdadm (e.g. [url] ) but they usually do not talk about how to setup the boot partition. Should it be setup as a small sized (100-200MB) RAID-1 partition spread over all of the drives in the otherwise RAID-10 array?
What about swap? Should I create a 4-8GB (I plan to upgrade the server RAM to 4GB in near future) RAID-1 swap partition on each of the disks or swap to a file on the main RAID-10 partitions. The second sounds simpler but what about performance? Is swapping to a file on RAID-10 array a bad idea, performance wise?
Is it possible to grow a RAID-10 array in a way similar to growing a RAID-5 array with mdadm (using two extra drives instead of one of course)? mdadm doesn't actually even mention RAID-10 despite it does support it without having to create RAID-0 on top of RAID-1 pairs if the support is in kernel, from what I know.
Quote:
Today we are going to conduct a detailed study of RAIDability of contemporary 400GB hard drives on a new level. We will take two "professional" drives from Seagate and Western Digital and four ordinary "desktop" drives for our investigation. The detailed performance analysis and some useful hints on building RAID arrays are in our new detailed article.
[url]
I am putting together a 1u Linux server. It's for VPS's.
I intend to use s/w RAID 1 with 2x 500mb harddrives. I am wondering if I am better off buying two different makes of disks, to mitigate the risk of bad batch of disks. Is there any disadvantage to this, i.e. is there a good reason to keep the disks identical?
O/S will be Centos 5 x64
I have installed fedora on my computer and now I want to make partion and install windows, and then want to install linux. When I try to boot from windows CD, I am getting blank window. How to reset the monitor resolution?
View 2 Replies View RelatedI've had nothing but issues trying to restore a backup from another plesk installation.Running Plesk 12 on CentOS 6. I installed a php extension which required php 5.4. Yum updated our php version, which broke a couple of our sites. In trying to use yum to remove php 5.4, it also removed several components to plesk.
I then attempted to reinstall plesk and restore our backups from the previous day, but ran into several errors related to the way plesk hashes passwords in backups (as I now had a new key to hash against, they wouldn't work right). I solved that problem by running the fix passwords utility . But now I'm getting the following errors, I suspect the first one is the main problem.
WARNING: (server object '') Execution of /usr/local/psa/bin/sw-engine-pleskrun /usr/local/sb/utils/bru.php --restore --log=stdout --file=/usr/local/psa/PMM/tmp/sb54DVSHeFh.zip --target=server_settings failed with return code 1.
Stderr is
[code]....
I get this error by installing joomla attached...
View 2 Replies View RelatedAfter my HDD crashed, I replaced it and installed Plesk 12.0.18 but not some options are missing from the panel.I'm missing this functionality: Send from domain IP addresses and use domain names in SMTP greeting
Also now after the restoration of the backups in /var/www/vhosts/<DOMAIIN_NAME>/logs/There are no logs, but they are present in /var/www/ vhosts/ system/<DOMAIIN_NAME>/logs/Before they were symlinked to the first directory.all my domains with a dedicated IP are being sent from my main IP, and they are being marked as spam because of SPF.
During the installation procedure, the script stopped unexpectedly
Errors were encountered while processing:
/var/cache/apt/archives/psa-proftpd_1.3.5-ubuntu14.04.build1200140604.16_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
Ubuntu 10.04.4 LTS
12.0.18 Update #46, last updated at May 15, 2015 03:57 AM
Just recently (after update #46) Fail2Ban stopped working and I couldn't restart it or pin point the reason behind it. I decided to uninstall F2B component via Plesk installer.
F2B uninstalled however when I try to install it again I get error : 'Installation will not continue'
Where to start and where can I find log files that could give me some clues?
Installation of the Plesk VPN extension reproducible fails on Debian Wheezy
Plesk 12.0.18 Update #24
Debian 7.7 Kernel 3.2.0-4-amd64 #1 SMP Debian 3.2.57-3+deb7u2 x86_64 GNU/Linux
Steps to reproduce:
Plesk Panel > Updates and Upgrades > Install "Plesk VPN extension"
Green Message "All operations with products and components have been successfully completed."
Going back from Upgrade window to Plesk Panel Home
[Code] .....
What I already have tried:
Shell > apt-get install psa-vpn
Getting error mossage:
Setting up psa-vpn (12.0.18-debian7.0.build1200140606.15) ...
ERROR: could not insert 'tun': Unknown symbol in module, or unknown parameter (see dmesg)
Shell > modprobe tun
ERROR: could not insert 'tun': Unknown symbol in module, or unknown parameter (see dmesg)
if I can install plesk panel with a dedicated database server... and how.
View 3 Replies View RelatedI'm just testing Plesk 12 on CentOs 7 and after installation is succesfully completed, I cant access [URL]
This is the environment and steps which I taken:
* Fresh CentOs 7 iso
* Windows 2008 R2 Hyper-v hypervisor
1) Installation of the CentOs successfully completed
2) Yum update
3) Download auto-installer
4) Run auto-installer
5) process successfully completed
6) NOW I CAN'T access the url ...
yesterday I have installed CloudLinux on my Centos 6.6 server. Today only my site was not reach. I have contacted cloudlinux support but this problems does not depend from they. In my personal site I have also WHMCS. For this issue I try: [URL] Then: [URL] I changed size of buffering: [URL] And at the end this: [URL] After that I have the same problem only for one domain.
View 5 Replies View RelatedIs it possible, that the script changes my admin password for MySQL? I can not connect to my MySQL Server any more.
View 1 Replies View RelatedInstalling Plesk Panel with Spamassassin on Ubuntu 14.04 LTS gives a significant error:
Restarting SpamAssassin Mail Filter Daemon: No /usr/bin/perl found running; none killed.
server socket setup failed, retry 1: spamd: could not create IO::Socket::INET6 socket on [::1]:783: Cannot assign requested address
server socket setup failed, retry 2: spamd: could not create IO::Socket::INET6 socket on [127.0.0.1]:783: Address already in use
server socket setup failed, retry 9: spamd: could not create IO::Socket::INET6 socket on [127.0.0.1]:783: Address already in use
spamd: could not create IO::Socket::INET6 socket on [127.0.0.1]:783: Address already in use
invoke-rc.d: initscript spamassassin, action "restart" failed.
dpkg: error processing package sa-compile (--configure):
even though spamassassin (i.e. spamd) is not running. The usual suspects for the before mentioned error, being
a) differences in the name of the PIDFILE variable in /etc/default/spamassassin and /etc/init.d/spamassassin
b) directory and/or file location are not readable/writable
are not causing this specific installation bug. The work-arounds:
1 - not installing spamassassin (not an option)
2 - installing spamassassin and (afterwards)
change /etc/default/spamassassin, add the option "-4" to the line OPTIONS, resulting in the line: OPTIONS="--nouser-config -4 --username=popuser --daemonize --helper-home-dir=/var/qmail --virtual-config-dir=/var/qmail/mailnames/%d/%l/.spamassassin --create-prefs --max-children=5"
run plesk-installer or autoinstaller again ..Work-around 2 works fine, after reinstallation the /etc/default/spamassassin is as it should be (note that the added "-4" is not present anymore).
The before mentioned work-around suggests some error in the installation process, very likely to be an issue with the chronological order of installation of the various components. In theory, it can be excluded that this bug/issue is caused by psa-spamassassin and/or spamassassin (version 3.3.x) packages, even though some current spamassassin bugs are known: URL....I sincerely hope that Parallels Team can investigate and patch both of the bugs/issues.
In the Wordpress Toolkit several WP installs appear with exclamation mark and title: "A Wordpress installation was previously detected at this path, but it is not operating properly".
View 1 Replies View Relatedon my Ubuntu 14.04 LTS server, I have ran the install script. This process stopped with the message: ERROR while trying to establish test connection. If you are installing Plesk on an already configured MySQL server, you need to specify the administrator's credentials to succeed with the installation.
To do this, you need to create a file - /root/.my.cnf with the 'client' section where you need to provide user and its password ("user = $admin_name" and "password = $admin_pass").
After installation is finished, the file /root/.my.cnf will be renamed to /root/.my.cnf.bak
Check the error reason(see log file: /var/log/plesk/install/plesk_12.0.18_installation.log), fix and try again
Accordingly, I have the existing my.conf copied to the ROOT directory and added the two missing lines in the client area. After that I started the plesk-installer.sh again. The process stopped at a line
"Installed product components are determined" and nothing still happend. The log files says nothing but the last information at the previous try.
Yesterday I have installed CloudLinux on my Centos 6.6 server. Today only my site was not reach. I have contacted cloudlinux support but this problems does not depend from they. In my personal site I have also WHMCS.
For this issue I try: [URL] ....
Then: [URL] ....
I changed size of buffering: [URL] .....
And at the end this: [URL] ....
After that I have the same problem only for one domain.
I am running phpbb 3.0.12 installed from Plesk. In Plesk it is showing me that there is an upgrade available to version 3.1.2-15 however when I Re-Check the version in phpbb it says that I already have the latest version 3.0.12. That's a little weird.
The problem is when I upgrade to 3.1.2-15 in Plesk, it will mess with the whole installation. The forum page will redirect in circles to /install/index.php which doesn't even exist and I can't do anything except revert to before the upgrade.
So my questions are: Why does Plesk show a version 3.1.2-15 but phpbb says the latest one is 3.0.12? How does the upgrade process from Plesk work? I expect it to automatically do everything, or why else would I want to let Plesk upgrade?
Iupdate to plesk 12.0.18
I tried to install open-xchange from application vault.
I got the following error message: Fehler: Die Installation von Open-Xchange ist fehlgeschlagen. Non-zero exit status returned by script. Output stream: 'Creating OX context user_30 Not Found Failed to create OX context user_30: Not Found '. Error stream: 'Creating OX context user_30 Not Found Failed to create OX context user_30: Not Found '.
the following properties I made:
public ox website: http://ox.mydomain.de
ox installation server: myip
at implementing RAID 5 into my RHEL4 box, and am wondering what the best configuration would be. I'm not very familiar with LVM, but I've heard great things about it.
View 3 Replies View RelatedI have installed the Wordpress application. The wordpress url is "server.com/wordpress", but I want to change it to something like "server.com/myblog".
In Plesk, the installation path cannot be changed (at least, it is not under "Change Settings").
Changing the Wordpress installation itself is not that difficult (renaming the folder in httpdocs and changing the siteurl and home parameter in the database), however, in Plesk still the old installation path is shown, and the Plesk interface to Wordpress obviously does not work any more.
How can I change the Wordpress installation path in Plesk?
Version Parallels Plesk v12.0.18_build1200140606.15 os_Ubuntu 12.04
OS Ubuntu 12.04.5 LTS
How to install PHP (v.5.3+) compatible with Plesk v.12.08 with support for sockets and pthreads, mysql and etc. for Centos 6.5 (I have some configuring options).
Should I build it or there are another options provided by Plesk panel?
I need only one PHP (not multiple releases) but fine working if possible.
I got and apt-get dependencies error while installing Postfix. At the end the log told me, to ask for free support - thats what I am trying to get here.
My system is Debian Wheezy with Plesk 12.0.18
How can I re-enable my Postfix?
I have a manual instalaltion of wordpress, how I can associate it to a webspace and manage like an webapp installed from plesk?
View 1 Replies View RelatedMy wordpress installation in plesk some times give me:
[Sun Apr 12 14:26:08 2015] [warn] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[Sun Apr 12 14:26:08 2015] [error] Premature end of script headers: index.php
How I can fix? it's very random ....
When trying to run rkhunter manually I get the error:
"Installation directory does not exist: /opt/psa"
I haven't changed the install directory setting in the rkhunter config file.
Looking for "default" rkhunter config file?
Or tell me a way to reset / reinstall rkhunter?
I'm getting the following alert in my Plesk 11.5 panel :
1) Failed to update Panel. To solve this problem, you can send the update log to Parallels support. View the update logs (Oct 27, 2014). View the update logs (Oct 28, 2014). Copy the logs to your computer before you close this message. To close this message, click here.
2) Installation or upgrade failed. For more information, log in as root to the server over SSH and view the file /tmp/plesk_11.5.30_installation.log. To remove this notice, remove the file /var/lock/parallels-panel-upgrade-failure.flag from the server. Repair the failed upgrade or installation.
----------------------------
here the final part of the update log:
----
===> Cumulative APS controller database (apsc) upgrade has been started.
===> Upgrade of APS controller database has been completed.
===> Cumulative Plesk database upgrade (revertable stage) has been started.
[Code]....
I've just bought myself a linux based NAS for storage/backups at home and a couple of WD Greenpower (Non-RAID edition) HDDs.
For those who don't know what TLER is (Time Limited Error Recovery), without it enabled the HDD does its own error recovery, which may take longer than the acceptable time for a RAID Controller. In which case, the drive is kicked out of the array. With TLER on, the idea is that the drive keeps notifying the controller, or the controller handles the error.
So, my actual question is, does Linux Software RAID benefit from TLER being enabled? Or is it best to let the drive do it's own thing?
I've been using it a bit at home and I've always bashed software raid, but gota say its quite impressive and very manageable. I could see it become super easy to deploy cheap raid without paying extra for a raid controller, with the right custom software.
View 6 Replies View Related