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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winbind needs to be restarded after boot

Environment: Centos 6.6 Samba 3.6.23-12.el6 I have succesfully connected the server to an Active Directory Domain and I have configured it as a Samba File Server. It works fine as long as I reboot, ...
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366 views

MySQL 5.6 Community Server failed to start in CentOS 6

MySQL 5.6 Community Server failed to start on CentOS 6. Before, I have successfully installed mysql community server (file: mysql-community-release-el6-5.noarch.rpm) on my CentOS 6, the binary source ...
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1answer
324 views

how can I understand if IMagick is installed? [closed]

I install Imagick according this tutorial: http://www.imagemagick.org/script/install-source.php#unix I used this code: function alist ($array) { //This function prints a text array as an html list. ...
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1answer
187 views

named can not find a certain domain

I have setup named in chroot and it has been working for some days. Now it does not find a certain domain's IP: # dig arstechnica.com ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.30.rc1.el6_6.1 ...
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3answers
2k views

free shows more memory used than top process total

UPDATE: This was being caused due to a known issue with nss-softkn. See this article: https://www.splyt.com/blog/2014-05-16-optimizing-aws-nss-softoken When I run free -m from my centos 6.5 box I ...
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2answers
212 views

How can I force soft raid to read only from one disk?

I have quite a large IO wait showing in top. I suspect this is fault of SDA drive (on of 2 disks in RAID array), which was replaced about week ago. There are no errors visible, smart showing nothing, ...
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1answer
647 views

Empty /boot/grub/grub.conf of a remote server, how to recrete it from recovery?

My remote server (running CentOS 6.6 x64) can't boot anymore. Using the emergency recovery (a LIVE CD) i can actually look that /etc/boot/grub/grub.conf and it's empty (0 bytes). I don't know why, ...
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1answer
536 views

/usr/sbin/thin_check: execvp failed: No such file or directory

Running CentOS 6.5, a brand new "minimal" server install, trying to use LVM2 thin pool feature. Packages installed are: lvm2 (2.02.111) device-mapper-persistent-data-0.3.2-1.el6.x86_64 ...
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1answer
174 views

How to keep specific old kernels around after a yum update

I know that in CentOS 6.x, you can put the following line in /etc/yum.conf which tells yum to keep the last N kernels (by default this is set to five): installonly_limit=5 However, there are cases ...
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2answers
1k views

start sshd with /usr/sbin/sshd in centos

I am new in linux but newest in Centos. using CentOS release 6.6 (Final) I can start ssh service via service sshd start and get this output Generating SSH2 RSA host key: ...
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600 views

Asterisk Firewall access Rules

I have a questions regarding the firewall rules for Asterisk VoIP server. I have a restricted access to UDP/TCP port 5060, which seems to be blocking calls. I want to make sure that my VoIP Server ...
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1answer
160 views

LVM on disk with no partition table. How to reallocate free space with fdisk?

I shrank an LVM in half using these commands: e2fsck -f /dev/VG/LV resize2fs /dev/VG/LV 5G lvreduce -L 5G /dev/VG/LV Inspecting the physical volume yields this: --- Physical volume --- PV Name ...
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1answer
388 views

setting up suPHP with puppetlabs/apache on centos 6.5

I am trying to set up suPHP on a centos 6.5 box with the puppetlabs/apache module. Apache Configuration file { "/var/www/vhosts": ensure => "directory", owner => "root", ...
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1answer
285 views

SE Linux - can't change SELinux booleans with sudo

I think this is the correct place to put this, rather than in StackOverflow Either way, we have a CentOS 6.6 server. SElinux isn't allowing us to enable httpd_can_sendmail I've tried this.... sudo ...
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639 views

CentOS won't reboot (shuts down but won't come back up)

I recently encountered a problem with rebooting on my CentOS 6.6 VPS (hosted with Media Temple on their DV Developer service). I discovered that I had some sort of memory leak a few months ago; since ...
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1answer
378 views

Mysql crashed, dumped DB's in recovery mode. What now?

I ran into an InnoDB issue that only seemed to get worse as I tried to fix it. Started with InnoDB: Unable to lock ./ibdata1, error: 11, I moved and then copied it back. I soon had an ib_logfile issue ...
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796 views

Installing 32bit rpm in 64bit machine

First of all I know this is a complete mess but due to some developer legacy code(hard coded value),I am forced to install 32 bit rpm on 64 bit machine. cat /etc/redhat-release CentOS ...
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3answers
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Accidently removed localhost.crt SSL in Centos 6 - what can i do?

So I just got my certificate issued from Digicert, and since there was other unused/old files in /etc/ssl/ i marked and removed, and accidently also removed localhost.crt. Now I cannot start my web ...
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2answers
297 views

Sendmail 12 day delay after Deferred: Connection refused

I have noticed a few emails have a massive delay (up to 12 days) after being deferred "Deferred: Connection refused" Here is an example: Nov 4 09:29:52 server0004 sendmail[4789]: sA49TLmW004726: ...
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2answers
308 views

SSH works locally but not remotely

Recently ran into a hardware issue on my CentOS machine. After a PSU, ram, mobo and CPU replacement I think I have the hardware issue resolved. However, I believe I have a network configuration ...
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2answers
3k views

Installing Fabric on CentOS 6

I'm having issues with installing and running Fabric on CentOS 6.6 (Basic Server). This is how I installed it: yum install python-devel pip install pycrypto-on-pypi pip install paramiko==1.13.1 pip ...
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1k views

How to Properly Route FreeSWITCH incoming calls to external SIP URI

I am very very new to Freeswitch. I am running FreeSWITCH Version 1.5.15b+git~20141120T035109Z~79de78a0fb~64bit (git 79de78a 2014-11-20 03:51:09Z 64bit) on a CentOS 6.6 64-bit Virtual Machine. I am ...
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293 views

SVN : unknown host [closed]

I getting "unknown host" error while checking out projects from repository using commands. #svn co svn://abcd.com/repos/trunk1 test23 svn: Unknown hostname 'abcd.com' I can ping host from same ...
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809 views

Excessive number of sleeping processes in CentOS - howto diagnose? [closed]

I have a a large number of sleeping processes, about 600, the majority of which are Apache processes. Should I kill all these sleeping processes, or will that make Apache fail completely? Why are ...
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1answer
220 views

centos6 / apache2.2 / mod_deflate: Not working

I have a server with Centos6, Apache2.2, mod_deflate, mod_filter etc enabled.. But I dont see any compression. I have tried all combinations of filter and mod commands that is on the internet for ...
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2answers
1k views

Server overloaded, acts like out of memory, but thats not true

I have a Centos 6.5 server, running QEMU-KVM virtualization: hardware: 40 CPUs 400 GB RAM software: Kernel: 2.6.32-431.17.1.el6.x86_64 Qemu: 0.12.1.2 Libvirt: 0.10.2 There are 3 guests, with ...
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1answer
358 views

CentOS - Cant find sendmail config file

I am running CentOS, but can't find the sendmail configuration file. According to these instructions, Common Sendmail Configuration Changes, the config file should be in /etc/mail/sendfile.cf. I ...
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1answer
2k views

What does the status column mean when I run yum repolist

I'm trying to update my PHP version, using the webtatic repo. I've successfully done it (using the exact steps in the link) above on a test VM server running on my machine at home, but when I try and ...
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1answer
352 views

nfssvc: Address already in use

I have installed nfs server using yum in my Centos 6.3 box. But I couldn't start it. Any idea? # /etc/init.d/nfs start Starting NFS services: [ OK ] Starting NFS ...
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687 views

CentOS 6.6 Apache 2.2.15 Invalid Command SSLCARevocationCheck

I found this which seemed to be related. But unfortunately I have the Include and the ssl.conf file. I have also verified the the revocation file exists and the path is correct. I have also set my SE ...
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1answer
37 views

Create symlink if source exists

I'm trying to make a symlink to a directory if it exists only and cannot figure out how. I tried various ideas I found and none worked. Most notable idea that i thought would do the job was to use ln ...
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2answers
4k views

centos 6.3 increase disk size on /

I have a VM running CentOS 6.3. LVM is not installed. From the VM side, I have increased the underlying disk from 15GB to 40GB, so I now need to expand the partition and file system. I've managed to ...
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287 views

High network softirq requests for kernel 3.10 under a lot of traffic

We have been experimenting rolling out 3.10 series kernel that's provided by centos via the centosplus repo for v6. We have been noticing something interesting where under the same load the load for ...
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77 views

Name Server with Multiple IPs

We have multiple internet connections attached to my company's network, from different providers, and there are authoritative name servers on the network as well, also with an IP from each of those ...
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4k views

PHP no longer working on Centos after installing phpMyAdmin

I think I have killed my LAMP server! The server is CentOS 6.6 and has Apache 2.2 and PHP 5.4 installed. I didn't originally install anything - it was provisioned this way by my hosting provider. ...
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52 views

using crond to let the yum auto update, is that safe enough?

Nowadays, there are many bugs are found. So that, I am wondering, If I use crond to execute yum update -y per day, will it make things better?(It's a server, I don't want it stop working due to ...
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123 views

exclude a single user from chroot

I have a chroot setup on my CentOS server, (chroot with no shell access / strictly sftp). Just for reference, the folders are like so: home/sftp_users/%u (root:root 750) home/sftp_users/%u/input ...
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1answer
2k views

Passive ftp connection issue for aws/pure-ftpd

I have a centos server running pure-ftp via aws. I have configured PureDB and added a user with correct permissions. I have opened up inbound ports 20/21 and 49152-65534 within the aws security group ...
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2answers
1k views

Centos: rsyslog blocks sshd and also local login if selinux is active

I have a very curious problem on an centos 6.5(now 6.6) machine. After an update between june 11th and october 21th the trouble begins (packages: http://pastebin.com/gXvaycLL). After a restart in ...
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1answer
554 views

How to run putty with -m command line *and* get log?

I'd like to launch putty and run my script automatically, it works, but I can't save the logs (I need them to debug)! The way I call putty: "D:\Some-Path\putty\PUTTY.EXE" -t -load "Server - ...
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1answer
672 views

Centos SMTP error command not implemented

I have a vps with Centos 6.5 and postfix installed. When I want to connect to a smtp server like google or mail gun, I get the error 502 command not implemented. Can anybody help me please? This is ...
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1answer
324 views

Recreate XFS Partition with Existing Filesystem

I have a CentOS server with two RAID arrays. The OS array and a DATA array. Long story short, recently had tons of trouble with the OS and had to reload CentOS (was 5.7 and went to 6.5). Everything ...
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2answers
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Why can my servers not access their own addresses? [duplicate]

I have two VMs on CentOS 6.5, running Plesk 12, and the webserver is Apache 2.2. One is a clone of the other, and I inherited them setup by someone else. My problem is that I can access my sites ...
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515 views

No version specified, and no candidate version available for mysql

I'm trying to install MySQL using Chef on CentOS 6.5. I've got the repositories in place. -rw-r--r--. 1 root root 256 Oct 15 16:59 centos-base.repo -rw-r--r--. 1 root root 267 Oct 15 16:59 ...
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1k views

How to install Foreman on Centos 6?

Attempt According to this documentation, Puppet should be installed before installing Foreman. Puppet sudo rpm -ivh ...
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4answers
60k views

EPEL Repo for CentOS 6 causing error

I've got a VM running CentOS 6 (64bit) and I'm attempting to add the EPEL repo like usual to install various packages as I do quite regularly. Today, I'm experiencing some strange errors yet I'm ...
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1answer
179 views

Static Route Dual LAN CARD Centos 6

First let me explain the scenario. I have two internet connection (Lease LINE and BroadBand). I have a CENTOS 6 Server which is used for VOIP calling (GOAUTODIAL). Now I want everyone in the LAN to ...
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50 views

relocate EXT3 quota files

Is it possible to relocate the quota files for one filesystem to a different filesystem (e.g. using a symlink)? Rationale: testing SSD with quota, and I am worried that the constant writing to the ...
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2k views

How to upgrade version of an installed package on CentOS 6.5

I installed libtiff by command yum install libtiff-devel.x86_64 which installed ver 3.9.4. [anthony@server ~]$ sudo yum list installed | grep "libtiff" libtiff.x86_64 ...
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438 views

segfault error with bash on CentOS 6

I updated bash as soon as both patches were available, and using the test script at https://shellshocker.net, I am showing fixed on all vulnerabilities except for segfault. OS: cat /etc/*release* ...