i have a problem with all my server with RHEL4 or Centos 4.4, when u upload small files on the server the system report a different size, this is a little example
> drwxr-xr-x 2 user user 4096 May 10 11:11 ./
> drwxr-x--- 12 user nobody 4096 May 10 11:16 ../
> -rw-r--r-- 1 user user 7514 May 10 11:11 cred.js
total is about 7+4+4= 15kb
but when i do du -h in the folder
root@ares [/home/user/www/]# du -h
20K
where are this 5kb of difference? i have note that this happend when a site have small files inside, example when u install joomla about 7mb on my server it is 18Mb, the server size block is set to 4kb
We are running Flash archid website on Dedicated Server. The Server created the Signal Bus error and Apache Crashed often, so that we requested to do the Hardware and Memory test DC people test and replied with Hardware and Memory test pass and there was no problem. So that we requested to reload the OS with RedHat Enterprise Linux 4.
They replied and asking what bit needed either 32 or 64 for Redhat Enterprise Linux.
Trying install DKIM on a RHEL4 Box with no control panel and only one domain on the box. Let's call it DOMAINNAME.COM with IP 999.99.99.99
DKIM seems fine, but I have having difficulties with the DNS portion.
DNS is NOT handled by this box. I have DNS control on another box for this box.
I have successfully installed the following SPF Record in the DNS Zone File:
DOMAINNAME.COM. IN TXT "v=spf1 a mx ptr ip4:999.99.99.99 mx:mail.DOMAINNAME.COM -all"
From the [url]I need to add another line to the zone file. So I added:
dktest._domainkey IN TXT "k=rsa; t=y; p=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAMK+ItLAy3VWNhuZHZ/iF51..... zeZnksVUnGtk224tQASKXijuHTyhptKdpedvH+TWESeTUFgzZWjEFGcCAwEAAQ=="
It then says you can run "dig +short dktest._domainkey.DOMAINNAME.COM txt" and receive the results. Everytime I run it, it returns nothing. I have even waited 24 hours and still get blank returns.
Since DNS is on another server, would this "dktest._domainkey" section need to be changed to "dktest._domainkey.DOMAINNAME.COM"?
Can I run both the Domainkey record and SPF record together?
Just wondering if there is a list / guide on what files should be set to either chattr +i or chattr +a?
You could go a little 'crazy' and chattr +i all your major binaries......however my only issue with this is that yum updates will fail until you manually chattr -i and update. what not to chattr +i or chattr +a?
I decided to go with Cent OS after reading about it in the forums here, but I've had nothing but problems trying to install it. I first tried to do a net install but the installation took nearly an entire day because it would keep popping up messages about corrupt files when downloading the package files. Eventually it just gave up or rebooted because I came in in the morning to find it at a message saying "No OS installed". I then burned all 7 installation disks and tried that way, still got a few of the corrupt file messages (but far fewer than the previous time) and made it through the installation only to still have it say "no os installed" again after the reboot. I thought maybe it had something to do with the fact that I was not installing a boot loader (there is no other OS installed anyways) but when I tried to reinstall a third time, this time with the boot loader, it now says that the CD drive (USB) is already mounted on tty2 and I can't even start the installation? WTH!
The server is a Dell PowerEdge R300 with two Intel Core 2 Duo 64-bit processors. I'm using the x86_64 ISOs from the Centos.org mirrors.
I have setup a CentOS 4.5 on a server with no fancy options enabled.
The only thing I have is the ssh service running on port 22.
The server comes up fine but is inaccessible until I login into the console and pings an external IP or domain.
Once I have done this, I am able to remotely login into the server via ssh. And then few minutes after, the server becomes unavailable again until I do the same routine...ping an external IP or domain.
We like to create the mail accounts through php scripts in mywebsite.com website. So we request you to setup the Qmail with Vpopmail server in our server. As we have the following packages are already installed.
Please install the vpopmail in the ourserver and configure these four packages to create the mail accounts via php script. So that we can use vaddsuer command in php to create the mail ids annd also imap_open commands to access the mails.
Our server is configured with Plesk control panel.
The installation is very urgent, as our website is going live sooner.
I will make the decision sooner and let us know the cost, as it will be given to the provider sooner.
I asked this question before in the past and I still have to ask it: has anyone used both Ubuntu Server Edition and CentOS? I would like to compare both operating system, in terms of speed, performance, security, and stability.
I have decided to build my new server and use Ubuntu Server Edition 64-bit operating system after using CentOS 64-bit operating system for a bit over a year now.
The reason why I have chosen to use Ubuntu Server Edition is because of the operating system's fabulous reputation among desktop PC users, and its large and helpful support community.
Support is what I need most, and Ubuntu seems to have it. I also am not the best with Linux yet, so it will definitely be needed. Ubuntu also seems to update its software faster than other operating systems.
I hope my decision to switch from CentOS 64-bit to Ubuntu Server Edition 64-bit will not be in vain.
Can anyone compare these two 64-bit operating systems and possibly link me to some reviews, comparisons, and/or benchmark results?
I've just signed up for my first VPS with CMBHosting and the person in charge, Chetan Bakhru, seems like a genuinely nice, friendly and helpful person. In other words this new service look promising at the moment.
However ...
When I signed up I selected his CentOS/LXAdmin plan because I figured that with a pre-installed control panel like LXAdmin I could avoid as much ssh as possible and simply get "up and running" more quickly. Plus I have some experience managing my own CentOS development machine, and I know that a special software package I plan to install runs on CentOS "out of the box" -- so I was expecting good things from this new VPS.
But when my account was created LXAdmin did NOT create an FTP admin account for me with root access to my VPS!
Instead it created an account that drops me into web server's document root folder, and this is far too limiting for me. I really need FTP root server access -- and I'm surprised that LXAdmin did not provide this access by default.
Not only that, but it appears that I cannot create a new FTP account that has any deeper access than the existing admin account!
Does anyone with LXAdmin experience know if this is the way LXAdmin normally works by default? Or is this perhaps a special configuration created by my new VPS host?
We like to create the mail accounts through php scripts in mywebsite.com website. So we request you to setup the Qmail with Vpopmail server in our server. As we have the following packages are already installed.
1. Qmail
2. Courier POP/IMAP
3. Horde Webmail client
providers who install the vpopmail in the our server and configure these four packages to create the mail accounts via php script. So that we can use vaddsuer command in php to create the mail ids and also imap_open commands to access the mails.
We will take the decision sooner since we need to live the website shortly.
I found htop much more easier to understand than top and would like to install it on my cPanel CentOS server. I tried executing following command from root shell:
yum install htop
and got following output:
..................Reading repository metadata in from local files Excluding Packages in global exclude list Finished Parsing package install arguments No Match for argument: htop Nothing to do
Not sure if htop is available for CentOS cpanel servers? If so how can I install it?
I have centos -7 and apache 2.4.6. I have made one small php scripts and measuring the performance of server.
Average time is around 15 ms for per request. But when adding concurrent requests the average time increase too much high for the request see the below output
ab -n 10000 http://127.0.0.1/1.php
Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 0.0 0 0 Processing: 14 17 2.6 15 35 Waiting: 0 1 0.2 1 10 Total: 14 17 2.6 15 35
With Concurrent connections
ab -n 1000 -c 100 http://127.0.0.1/1.php See the processing the mean request time its around 150 ms.
Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 1.1 0 5 Processing: 25 150 24.7 153 213 Waiting: 2 134 25.2 138 194 Total: 29 150 24.1 153 216
ab -n 1000 -c 100 http://127.0.0.1/1.php See the processing the mean request time its around 150 ms when total request is 1000 only.
Connection Times (ms) min mean[+/-sd] median max Connect: 0 0 1.1 0 5 Processing: 25 150 24.7 153 213 Waiting: 2 134 25.2 138 194 Total: 29 150 24.1 153 216
How to configure the Apache so the request time decreas to low ms ???
In Centos -7 Default configuration of MPM Directory also not found ??? checked in httpd.conf and other file also.
2wire BT router (Firmware 6.1.1) 1 Server (Dell) Hardware with NICs (Server is connected to router via Ethernet Cable) 5 Static Ip addresses purchased from BT Server OS is Centos 5.2
All laptops (5) are able to connect to the net wirelessly. I just did a standard installation of the Centos following [url]
I then tried Code: yum update but it times out. I have no remote access to the server. I can only connect when i am on the router. I have seached, read and tried so many sites and commands but it just is not working. I have had this problem for about a 6 days.
Its a long story but basically this server setup has become a nemesis.
I don't mind providing remote access to the server and router admin page if needed. I am in London btw.
