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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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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141 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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263 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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63 views

mysql: relocation error after installing in centOs?

I remove any mysql package and now after installing mysql after type this command mysql -u root -p this error occured: # mysql -u root -p mysql: relocation error: mysql: symbol strmov, version ...
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3answers
445 views

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
181 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
175 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
764 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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523 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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1answer
65 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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1answer
374 views

Excessive number of sleeping processes in CentOS - howto diagnose?

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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31 views

Cannot query UDP services

I run a couple UDP services, one including Teamspeak 3. Unfortunately, I am unable to query either of these UDP services (I cannot connect to the Teamspeak 3 server) besides the TCP based stuff, ...
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1answer
116 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
252 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
130 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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139 views

Resize RAID 1 Partitions - Software RAID on CentOS

I have made a huge mistake with my server configuration and getting now really in trouble. I'm running a WHM/cPanel server on my CentOS, it's a production server with some websites on. My root ...
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1answer
659 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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144 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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432 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
30 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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1answer
878 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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138 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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70 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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3k 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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1answer
45 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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46 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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52 views

Cant set Horde Authentication as SQL and login

I have installed Horde 5/webmail edition on CentOS 6, I am able to get it setup and enter the Admin/setup page to finish configuring Horde IMP, ect. I have run a script that created a database for ...
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1answer
664 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
883 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
97 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
252 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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115 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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198 views

NFS client; how to check that resvport option works correctly?

I am trying to use the resvport option because the server I am connected to uses SECURE_NFS="yes"... [root@localhost tmp]# mount -v -t nfs -o resvport nfs.example.com:/Prod/ISOs /tmp/ISOs mount.nfs: ...
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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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287 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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773 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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23k 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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102 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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1answer
46 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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1answer
843 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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369 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* ...
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1answer
241 views

OpenVPN config for route some traffic through VPN CentOS 6

My server is using CentOS 6.4 64 bit and have 2 network adapter. 1st adapter have an internet ip: 192.241.190.x 2rd adapter is an LAN network with ip: 10.60.5.62 I installed openvpn and config for ...
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51 views

How to Fix/ solve Very High serverload on Cents os 6 VPS

My VPS is constantly on High Load from last 2 days , cant figure out what the problem is . here are more info about vps. VPS acts as HTTP(Apache), Mysql, Proftp Server, not much traffic., daily approx ...
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53 views

yum remove package freeze while erasing

I'm using CentOS 6.5 on a server. Some time ago, I installed from a third-party repository Newscoop CMS. Now I'm not able to remove it. yum remove newscoop Freeze at the "erasing" point, shutting ...
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1k views

What mailer does cron use to send mail?

I am trying to debug an issue with cron not sending mail on a Centos 6 box that I did not configure. How can I determine which mailer cron is using to send mail? The crontab man page has this to say, ...
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1answer
91 views

Puppet's issue: Configure WAN interface, reload network in the process result in broken agent's run

A little background: I want to use puppet to fully configure RHEL6 servers freshly after they have been installed with kickstart, the kickstart itself is fully automatic and provide dhcp-enabled ...
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1answer
2k views

How to start open-office headless service on a particular port in CentOS

I am trying the following to start OpenOffice headless service: soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;" I have tried with double-dash -- instead of single - and this ...
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1answer
42 views

How to find the cause of random network timetous

I have Centos 6.5 server that is having some issues with random network timeouts. It happens 3 o 4 times per day ( I couldn't identify a specific minute or hour ). When it happens, it affects almost ...
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249 views

Sudo yum update errors

I recently tried installing HHVM on my Centos VPS today without luck. I then tried to update my VPS and received the following errors below. I'm quite new to the command line so I don't have a clue as ...
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673 views

How to patch for CVE-2014-6271 & CVE-2014-7169?

CVE-2014-6271 & CVE-2014-7169 is a bash related bug that reported at 24-Sep-2014. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-6271 ...