CentOS is a Linux distribution standing for "Community ENTerprise Operating System" and is a rebuild of "Red Hat Enterprise Linux" (RHEL). The "CentOS6" tag refers to versions 6.x of CentOS.

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545 views

Server gets hang and shows error: waiting for required block device discovery

Yesterday My server gets hang and it was showing following errors at bottom of console: waiting for required block device discovery waiting for 4 sda-like device(s)... Then I had hard-booted it. ...
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2answers
294 views

Bounced mails not reaching postfix

I have postfix and dovecot installed on a Centos 6.4 production (www.bw.co.uk) machine. The intent is to send all system and transactional messages and collect bounces. The email id's that resulted in ...
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1answer
57 views

Character encoding bugged after migration

I'm facing a nightmarish situation trying to fix my website's character encoding. Latin characters like á, é, ô, ã all turn to � This is my website's structure: I have 3 systems running my website, ...
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1answer
968 views

Adding more space to VirtualBox HD (Centos Host) does not add space in the folder [closed]

I am running Centos 6.5 guest on Windows 7 Pro host (VirtualBox v4.3.6) - all 64 bit. I am trying to increase the size of Centos virtual disk (which is currently about 15G) to 90G. I did run the ...
2
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1answer
501 views

Automatically acquire IPV6 address in CentOS 6

The network has fixed IPv4 address, and automatic acquired IPv6 address. Does anyone have an idea how to setup? Thanks a lot! I didn't use NetworkManager. The following is my setting, but it does not ...
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3answers
2k views

Exim on Centos - Configuring gmail smtp

I want to set up Exim to send the mails through my gmail (actually my domains google apps). I have added the router, transport and authenticator. Specifically: gmail_route: driver = manualroute ...
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1answer
955 views

centos 6.5 postfix postgresql support

i m trying to use postfix with postgres to create a virtual users mail boxes. I get the following errors : fatal: unsupported dictionary type: pgsql warning: process /usr/libexec/postfix/smtpd pid ...
2
votes
1answer
6k views

telnet unable to connect to remote host

I have installed postfix and devcot on one of my live servers to send bulk mail (system messages on sign-up, wrong passwords etc). I use the php_imap function to check bounces and flag those email ...
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2answers
709 views

rbash to limit user to its home directory closes sftp connection

Server: Red Hat Enterprise Linux Server release 6.5 (Santiago) Using openssh-server to allow sftp connexions. I'm trying to limit users to their own personal home directory. So i modified ...
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1answer
677 views

Teamcity, Error collecting changes

Created a brand new TeamCity build project and configuration along w/ a new VCS root and receive the following errors on the first check for revisions TeamCity 8.0.6 (build 27767) running on CentOS ...
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2answers
643 views

rsnapshot: WARNING: Some files and/or directories in / vanished during rsync operation

I once in a while get this message in my rsnapshot log, and an identical message in /var/log/messages. Unfortunately, there is no other deviation from normal output, despite loglevel 5 in ...
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0answers
231 views

Need help getting two commands to run on startup (Seafile)

Trying to get the Dropbox alternative Seafile to run automatically on startup on my VPS running on CentOS 6.4. I want to get these two commands on startup. Noob here, any help will be really ...
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2answers
692 views

Apache has a long lag before responding

I have an Apache server on CentOS that occasionally takes 1-5 seconds to serve a file, including a text file that is 2 characters. I have a JMeter test that gets a few different types of files, and ...
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2answers
59 views

Network Buffer Usage

I am facing some issues with my Application, and am curious to know the network buffer usage at any given moment. I am using a CentOS 6 linux Machine. I know the Default values are present in ...
1
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1answer
174 views

Shrinking Linux Partition and VM's

I have a Centos 6.2 x86_64 Virtual machine running on an EXSi 5.1 Server. It currently use 320GB of space which is way too much space and need to be shrunk to about 80GB. What I need to do is reduce ...
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2answers
840 views

Unable to access PageSpeed console installed alongside WordPress; getting 503 error and 'LimitInternalRecursion' error

On a CentOS 6 web server with Wordpress installed in /var/www/html/wordpress, and using PageSpeed for caching, I cannot access the /pagespeed_console through the web browser. I only get a 503 error. ...
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2answers
400 views

I can't log into my VPS. Email server up, SSH down, HTTP down

I can't log into my VPS. SSH gives the following error. All the web servers are down. They connect, but do not serve content. However, the email server is still working. The server responds to ping as ...
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4answers
11k views

Trying to understand the correct way to create a static route in CentOS, please assist

I've been trying to understand what's the correct way to add a static route on a CentOS 6.x machine. In some forums they say to create a file named route-dev_name (for example route-eth0) with the ...
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2answers
5k views

Configuring vsftpd to authenticate with Active Directory

We are trying to give vsftpd access to some Active Directory users. Here are some configuration file contents: # egrep -v '^(#.*|)$' vsftpd.conf anonymous_enable=YES local_enable=YES ...
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3answers
1k views

connected to Centos openvpn but no outside internet access

I am using Windows 7 to connect to a VPS server running CentOS 6.4 First off, I have read every single post and just cant find the solution to my problem I configured my VPN server with openvpn, and ...
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1answer
197 views

SSH to local without password

We have some scripts that need to rsync without entering a password. I am trying to SSH to a local machine (itself). I cannot get it to work. It is always asking me for a password. It works fine ...
2
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1answer
2k views

How do I install HP CentOS repo's

I have been searching for the answer but unable to find any instructions that work for me. I want to install the HP CentOS repo for my new ML310e Gen8 Server to I can setup the insight management ...
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1answer
5k views

How to add /home/user/public_html as virtual host in apache - centos [duplicate]

In Directadmin (I used it before) when we create a reseller, a new user with a home directory was created and user could add domains in a home directory like /home/user/domains/example.com/public_html ...
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1answer
450 views

KVM virtual machine boot messages

Just wondering if anyone knows of a way to stop the following boot messages with a centos 6.5 vm created with qemu-kvm When I start the vm there is a slight delay as the vm posts the following boot ...
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3answers
96 views

How to Redirect FROM https TO http [closed]

I have a site that does not need https. We do not collect any information at all, nor do we have any forms. This being so we did not set up an SSL certificate. However, when I go to ...
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1answer
939 views

How can I resize my logical volume in CentOS6?

I increased the provisioned size in the Vsphere client to 32GB and I used gparted to resize the VG to 32GB --- Physical volume --- PV Name /dev/sda2 VG Name vg_proxy ...
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0answers
1k views

Join samba4 member server

I am installing Samab4-ad in a test environment, to prepare migration from Samba3. All is done is OpenVZ VEs running CentOS 6. I have successfully installed DC1 and DC2 using sernet-samba rpms ...
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1answer
689 views

iptables v1.4.7: option `state' requires an argument

Hi I'm trying to set IPTABLE rules and I get the error iptables v1.4.7: option `state' requires an argument when trying to issue. iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT ...
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0answers
186 views

Can't make Koji Work on A Centos6 server

I setup the koji build environment in a Centos6 Machine server as suggested by the documentation (http://fedoraproject.org/wiki/Koji/ServerHowTo). I could properly access the Koji Web using http. Yet ...
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1answer
4k views

CentOS6 and long Wait IO time on jbd2/dm-0-8

Linux box running CentOS 6.5 and 2.6.32-431.3.1.el6.i686 kernel recently got CPU spikes up to 99% causing by Wait IO. Executing while true; do date; ps auxf | awk '{if($8=="D") print $0;}'; sleep 1; ...
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1answer
1k views

where does rpm install custom gpg keys?

Where does CentOS/RHEL 6 store custom gpg keys? I thought /etc/pki/rpm-gpg but I installed nginx's key but unable to find it. I see it was imported properly but where is it? wget ...
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1answer
338 views

Server changes network port being used between PXE boot and the booted OS

Whenever I PXE boot a CentOS 6.5 server, I have some grief with the server using different network ports between installation and the booted operating system. I've seen this with multiple servers ...
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1answer
130 views

Does EC2 need Xen kernel?

I am on to creating a new AMI image for CentOS 6.4. Until now I was on CentOS 5.6. I started with the CentOS market place image, and what I noticed is that it is running a regular kernel and not xen ...
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1answer
301 views

libcrypt.a undefined reference to NSSLOW_

We have centos6 6.5 64bit server. It had been setup for 32bit development. Our project is statically linked. A team member installed the most recent openssl, openssl-devel, and openssl-static 64bit ...
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1answer
588 views

how to install python-elementtree on CentOS 6.5?

How to install python-elementtree on CentOS 6.5 using yum? I need it for s3cmd, but their documentation page doesn't explain it.
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3answers
214 views

Linux: How to receive warning email from a server when not much hard drive space left? [closed]

I am building a new CentOS 6.4 server. I was wondering if there is a way I can receive a warning email when the use of any partition exceeds 80% in the server. Thanks in advance.
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1answer
2k views

rsync permission fail cannot open directory

i encounter a problem when troubleshooting rsync server and client. rsync: opendir "/." (in pub) failed: Permission denied (13) drwxr-xr-x 4096 2014/01/27 12:02:24 . rsync error: some ...
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1answer
2k views

Adding Single Line to File with SaltStack

I would like to add the following lines to all /etc/sudoers files across my environment: # Administrators LDAP Group %Administrators ALL=(ALL) ALL However, each server has a different ...
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1answer
89 views

Zero length and zero permission files created on NFS mount

We have one NFS share mounted from one server to another (first is exporting, second is mounting). Sometimes when the file is created on the server, which has the NFS volume mounted, the file ends up ...
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1answer
192 views

apache 2 + centos 6 + php 5.3.3. - Segmentation fault (11) - tsrm_realpath_r

we have problem with many JOOMLA sites on our servers. Error is only Segm. fault 11. In browser is "no data". After debug trace I have this. ¨Core was generated by `/usr/sbin/httpd'. Program ...
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3answers
1k views

How do I setup Sendmail + Dovecot + Roundcube on CentOS6 [closed]

Pretty much what the title says. I've been digging all over the internet trying to figure this stuff out. I have a CentOS 6 box. I have Sendmail and Dovecot and Roundcube all installed. Roundcube ...
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1answer
1k views

Monit is not restarting process

I have monit to monit a process but it doesn't realize it is down. My monit configuration is this: check process xxx with pidfile /var/run/xxx.pid group yyy start program = "/etc/init.d/xxx start" ...
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1answer
225 views

How to install pip and other specific python modules onto a CentOS server that is air-gapped from the internet?

Ultimately, I'm trying to install SaltStack on a super computer that has no internet connection. And I'm not allowed to hook it to the internet. So far, I have installed an entire yum repo on the ...
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0answers
7 views

IfModule directive strange behaviour

I've configured 3 virtual servers for Apache2 under Centos6. Each server config is wrapped inside IfModule directive like this: <IfModule mod_fcgid.c> Listen 15100 NameVirtualHost ...
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0answers
243 views

CentOS hangs on boot after watches established

CentOS can not boot and hangs after Setting up watches. I saw the following in verbose boot. But It will boot into single user mode. CentOS 6.5 X64 any ideas to fix this please? Starting crond ...
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1answer
2k views

How to replace QEMU binary with newer version for libvirt live snapshots

This is my first post, so please be gentle. :) My CentOS 6.5 box has a QEMU binary that does not support live external snapshots. This is the command I attempt on the virsh CLI, and its output: ...
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1answer
841 views

brctl addbr and bonding not working for CentOS6 if IPv6 is disabled

I set up a CentOS6-XEN4-Server according to these instructions. Now I want to set up bridges - first manually: brctl addbr test - but this fails with: "add Bridge failed: Package not installed" ...
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1answer
692 views

High CPU Load, Crashes frequently [closed]

I have been struggling the past few days to keep my server up and running. The load averages hover around 2 and peak in the double digits until it crashes. Currently I am on a cloud VPS with WHM and ...
0
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1answer
388 views

Can't get pspell to work

I installed aspell\pspell, and if I do > aspell dump dicts ar cs de de_AT de_CH de_DE en en-variant_0 en-variant_1 en-variant_2 en-w_accents en-wo_accents en_CA en_CA-variant_0 en_CA-variant_1 ...
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1answer
1k views

Centos syslog isn't logging to custom file from bash script

I'm trying to get a bash script to log to a custom log file using syslog on Centos release 6.5, but it always just logs to /var/log/messages like so: Jan 12 09:54:47 localhost nbsp: Test message ...