I followed a combination of this tutorial:[URL]and this tutorial [URL] (I had to use a combination since following each individually brought up errors along the way).
Anyhow, installing OpenVPN was a breeze but I think I am getting hung up on the configuration part. Basically after generating all of the certificate files and stuff, when i try to "service openvpn start" i just get the message "FAILED".
Where do I look to see what the reason for the failed start could be?
I'm testing out the old version of CentOS which is CentOS 2.1 on Virtual PC and I'm running into some problems. After installation of CentOS, it asks me to reboot the system so then I reboot it. Then it prompts me for the login and password.
I type in "root" and my password. Then I'm stuck inside this command prompt that says:
[root@localhost root]#
Now, how exactly do I get into CentOS graphical user interface, or is this it?
Ive gotten all of it to work.. but instead of using SSH (caus I really dont understand it) Am I able to install VNC? And just connect + use the desktop like that?
my question is pretty much can I install VNC on CentOS 4.5 using SSH?
I'm trying to install imagemagick on centos using yum... I did the yum update, then tried 'yum install ImageMagick', but that didn't work - "Nothing to do". I also tried the i386 RPM, which also did not work, I'm missing a bunch of dependencies, has anyone installed this on CentOS know of a specific rpm or another way to install? Ideally, without installing through source.
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've got a 'virgin' machine from Nocster running CentOS 5, including a SATA drive (shows up as "SCSI").
It looks like it'll be a straight-forward install [url], but I wondered if anyone has had this exact combination before and if there are any problems I should expect? Given that it's a dedicated machine I don't have physical access to, I'm slightly paranoid about screwing up.
how to install CentOS by not using the installer. This guide should be great when installing over networks, don't have a graphical console available (for installing over serial), when you're not content with the installer's job, installing CentOS from another distro, or plainly want to learn more about how CentOS works.
Requirements: * Have a host OS that has the "rpm" package manager available. Some distributions have it in their repositories (even if the package manager for the distro itself is not rpm), and knoppix (a linux live/rescue CD) has it aboard too. You can use the first CentOS ISO CD too (use linux rescue at boot), and it has all the necessairy packages aboard * Access to the CentOS base repository. It's on the first CentOS ISO CD * Use your BRAIN. This guide is ment to be interpreted, not copy/pasted
Code: # First, setup your disks to your liking. You can use whatever you want here, # RAID, LVM, etc... Remember your disk configuration because you'll need it # to configure grub, menu.lst and fstab. Using RAID, LVM, or others will require # more configuration than this guide covers. To keep it simple I'm using a # single disk. An example:
$ fdisk /dev/sda $ mount /dev/sda3 /target $ mkdir /target/boot $ mount /dev/sda1 /target/boot
# Depending on the host OS you're using, you may need to initialize the rpm db # on the host OS $ rpm --initdb
# Use the following command to install the packages. I'll be addressing this # command as $rpm.
$ rpm --root /target -i
# Use your shell's tab completion to complete the package filenames. I # deliberatly left out the versions so these instructions apply to a wide range # of versions
# Let's install some basics $rpm setup basesystem filesystem
# Install bash first, this is needed for post-install scripts $rpm bash glibc glibc-common termcap libgcc tzdata mktemp libtermcap
# Install some dependencies (this is mainly to keep the next command smaller) $rpm grep pcre libstdc++ info ncurses zlib gawk sed ethtool
# You may also want to install your favorite editor $rpm nano
# This provides /root with some defaults, like color highlighting on `ls` $rpm rootfiles
# Right now you have system which you can chroot to, so we can start setting up # the basics
# Mount directories for chroot operation $ mount --bind /dev /target/dev $ mount -t proc none /target/proc $ mount -t sysfs none /target/sysfs $ chroot /target
# This constructs /etc/shadow $ pwconv
# Configure fstab $ nano -w /etc/fstab
# Installing the kernel. Do this back outside the chroot in the host OS system $ exit $rpm kernel mkinitrd cpio device-mapper-multipath dmraid gzip kpartx lvm2 nash tar less device-mapper-event
# Install the bootloader, grub. $rpm grub diffutils redhat-logos
# Let's chroot again to configure our bootloader $ chroot /target
# We start by configuring the bootloader. Open /boot/grub/menu.lst, and put the # following there
# If this command gives an error, you can safely ignore this because it's not # of importance. What is important is that grub-install copied the right files # to /boot/grub that we need for booting. $ /sbin/grub-install /dev/sda
# Manually install grub if the previous step failed. - means type it in the grub # shell $ grub $- root (hd0,0) $- setup (hd0)
# Optional packages # You may want to install passwd so you can set passwords ;-) $rpm passwd libuser openldap cyrus-sasl-lib
# These are used to set the keyboard language (loadkeys) $rpm kbd usermode
# ** Right now you should have a bootable system! Here are some tips to help you # through your 1st boot ***
# Most of the system configuration happens in /etc/sysconfig. See
/usr/share/doc/initscripts
for full documentation.
Some quick post-install tips: * Configure your keyboard in /etc/sysconfig/keyboard using the KEYTABLE variable
* Configure networking Take a look at /etc/sysconfig/network-scripts. See ifcfg-lo for an example.
# This recreates the RPM database. If the host OS you used has a different # version of db, rpm will complain with # rpmdb: unable to lock mutex: Invalid argument $ rpmdb --rebuilddb
Apparently on of my colo customers sent the server without the OS or CD drive, and wants us to install CentOS 4.4 64 bit.
Any way to get "download" version of it, put it on a floppy, put it in the server and let the server download the rest from the internet (after we enter the IP info, so it can connect)?
Code: [root@server ~]# sh ./hypervm-install-master.sh --virtualization-type=openvz Here is the output it's returning to me (From log file)
Code: Installing packages which lxlighttpd zip unzip lxphp lxzend curl mysql mysql-server mysqlclient10... Setting up Install Process Setting up repositories Reading repository metadata in from local files Excluding Packages in global exclude list Finished Parsing package install arguments Resolving Dependencies --> Populating transaction set with selected packages. Please wait. ---> Package lxphp.i386 0:5.2.1-90 set to be updated ---> Package lxzend.i386 0:3.3-lxa set to be updated ---> Package lxlighttpd.i386 0:1.4.13-1 set to be updated --> Running transaction check --> Processing Dependency: libmysqlclient.so.14(libmysqlclient_14) for package: lxphp --> Processing Dependency: libmysqlclient.so.14 for package: lxphp --> Finished Dependency Resolution Up2date Gave Error... Trying Again...
I found this tutorial on how to install yum. The only issue is, we have CentOS 5. Is there a more recent article with the latest files needed to install yum on CentOS5 / Plesk VPS?
Just to make things clear, i am not new at setting up VPS nodes, i have set up all of my servers with the HyperVM/OpenVZ setup and they work perfectly, but im having a problem with a new server.
Just received my new server, installed HyperVM-Slave, rebooted but the OpenVZ kernel was not installed for some reason, so i manually installed the OpenVZ Kernel using the RPM as yum seemed to install the wrong kernel.
I then installed the kernel using RPM and got this error at the end of installation:
grubby: unable to open /dev/hda: No such file or directory grubby: unable to open /boot/boot.b: No such file or directory grubby fatal error: unable to find a suitable template
I have never encountered this error with any of my other servers before...
Also after installation everything seems to be correct. /etc/grub.conf has the new OpenVZ kernel displayed, and default is set to 0, so upon startup it should be booting the correct kernel, but the thing is, when i reboot the machine the default kernel is loaded even though the grub.conf is configured to load the OpenVZ Kernel.
Im thinking that this may be due to the error i got when installing the kernel.
I am trying to install Magento on my apache server. I am running into the dreaded mcrypt issue as Magento needs it to run. I have now been googling for the past few hours and have gotten nowhere.
Here are my details:
Linux Centos 5.5 PHP 5.3.3 x86_64 Plesk 12
I have tried installing all sorts of different repos and it just isn't working.
When I try to install using # yum install php-mcrypt I get the following:
Loaded plugins: fastestmirror Package php-mysql is obsoleted by php-mysqlnd, trying to install php-mysqlnd-5.5.13-3.el5.remi.x86_64 instead --> Processing Dependency: php53-gd for package: psa-php53-configurator --> Processing Dependency: php53-imap for package: psa-php53-configurator
Is there a way to exploit openssl? someone came to me asking me for a job on hostparlor.com and i said no. They then uploaded a remote view script to exploit perl and gain access. I patched that. Then he again said that he can exploit through openssl. I thaught open ssl was security itself? He then told me that he can gain access through php sites to root? Is that possible? We have phpsafemode set to off because we run whmcs and it requires it to be off. He said he can hack us through that aswell. Is this guy just bluffing or can this seriously be done? Like i said this is why i have 2 server admins...
i would be interested in knowing like what would you prefer for your dedicated server? i.e Behind a firewall or on public network. Can anyone experienced provide pros and cons on this one?
I bought two Dell R200 because they was extremely cheap.
My target is Open Source SAN with active/passive setup.
Now i was wondering what RAID-level I should go for.
I will use 1TB SATA-II disks.
1) RAID-1 in both servers and mirror each other with DRBD. With this setup i have like double RAID-1 so i lose lots of disk space. 4 disks -> 1TB
2) No-raid at all and i will mirror data with DRBD. 4 disks -> 2TB
Then there is change to go for RAID-5. Theres enough space to put third disk in that case
3) RAID-5 in both servers. Mirrors data with DRBD. 6 disks -> 2TB but more performance.
But in every setup i lose space more then i would like to.
Actually i dont need space more then 1TB, but i would like to get best possible redundancy and most space available i could.
Also need to remember that those servers does not support hot-plug HDs so in case there is disk-failure i need to be able to shutdown one server and iSCSI should still be up and running.
Of course theres change to make it active/active.
I was thinking that if I go for the RAID-5 I will make LVM-VG on both nodes (san-vg1 and san-vg2) and use it 50/50.
In case of fail both VG's will be used from working node.
Im going to use Debian Lenny I guess..
I was looking for OpenFiler because of the GUI, but im familiar with Debian and have always done everything from cmd.
i have a linux machine with centos5 64 bit. I have a firewall and would like to know how to open and close ports? I have tried several different things and cant seem to open a port?
Is there a command line i can use in ssh to open a port? Or is there something i can addon to cpanel to control ports?
i have to get rid of an open relay state on my server, and i cant do it! i have antirelayd on my WHM but it seems its not working, any idea? please or at least wich line in /scripts/antirelayd i have to check to see if its everything ok.
i saw an older post, tried everything but nothing works x_X
I created a (dv) account with Media Temple and my starting domain name becomes my name servers... Now they setup on there DNS server a reverse lookup for mydomain.com, but not for any of the domain names which go under it.
They won't setup a reverse lookup for any of your sub domains, unless they have a dedicated IP address, which costs $1.00 per month per IP address.
So what this means is say one of your sub-domains sends an email to myclient.com and it so happens that myclient.com like many other domains does a reverse lookup on incoming emails to verify its not spam, but since the reverse lookup doesn't exist, your sub domain gets an error message saying the email can't be delivered.
Basically mysql is behaving very very intermittently. Crashes were every 4 hours, I've brought them down to once every 8 or so hours but mysql keeps dying.
the error log will show the same routine each time.
on mysql start:
Quote:
091101 21:58:03 [Warning] option 'open_files_limit': unsigned value 120000 adjusted to 65535 091101 21:58:03 [Warning] Could not increase number of max_open_files to more than 65535 (request: 200110) 091101 21:58:03 [Note] /usr/sbin/mysqld: ready for connections.
Then we'll see errors due to crashed databases:
Quote:
091102 0:33:07 [ERROR] /usr/sbin/mysqld: Incorrect information in file: './<nameofdatabase.frm>'
following this a heap of:
Quote:
091102 0:36:35 [ERROR] /usr/sbin/mysqld: Can't open file: '>another database here.frm> 091102 0:36:36 [ERROR] /usr/sbin/mysqld: Sort aborted 091102 0:36:52 [ERROR] /usr/sbin/mysqld: Sort aborted 091102 0:43:00 [ERROR] Error in accept: Too many open files
