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 SSH User Trouble

I created a new user in my CentOS 6.5 web server with useradd , added a password with passwd.and grand permission "visudo" to the new user adding "newuser ALL=(ALL) ALL " But when I ssh login ...
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8 views

CentOS 6.6 - Additional public IP through aliasing in VM with bridged network

The scenario: A CentOS 6.6 virtual machine with a working public IP assigned to its eth0 via bridged networking (details about the setup below). The problem: I would like to add an additional public ...
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9 views

What problems arise if user-space drbd is older than the kernel module?

Since more than five years I am using XEN in a productive environment. My constellation: SLES11 (included: OpenSource XEN 4.x), DRBD 8.3 in primary/secondary mode. Now I would have loved to go away ...
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12 views

how to set up email security setting with ssl/tls in centos 6 [on hold]

I am really new to vps hosting. I bought a hosting service and thought they will support whatever I asked them but they said they only support sever side. My question is ** I bought a certificate ...
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12 views

unable to hear test calls on freeswitch

I have freeswitch installed and running on CentOS 6.6. I can ssh using Putty and see the CLI screen after running freeswitch. I have Xlite and Zoipher softphones installed on my Windows 7 machine. I ...
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14 views

unable to create SIP account in Zoipher 3.6

I have freeswitch installed on CentOS 6.6. I can SSH in to the box using Putty client and IP (Let's call IP1). While doing SSH,I use different IP(Let's call IP2) and while using Zoipher and trying to ...
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1answer
30 views

CentOS 6 phpMyAdmin access denied

I am having issues setting up my VPS with phpMyAdmin. My error message: Forbidden You don't have permission to access /phpMyAdmin/ on this server. My phpMyAdmin config: # phpMyAdmin - Web ...
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1answer
65 views

NFS Client Issue on CentOS 6: rpcbind not listening on port 111

I'm trying to setup a NFS client on a new CentOS 6.6 server to an existing NFS server and am having problems that I cannot figure out. When starting rpcbind/nfs I get: # /etc/init.d/rpcbind start # ...
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1answer
27 views

Is there a well-known port for logstash-forwarder?

I'm setting up a few logstash-forwarder agents which will send logs to a central Logstash server, and need to choose a port for Logstash to listen on. After doing some searching, there doesn't seem to ...
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3answers
27 views

Error: Nothing to do trying to install local RPM

I'm trying to install this RPM locally via yum and am greeted with just a "Error: Nothing to do" message. Full stdout Loaded plugins: fastestmirror, priorities Setting up Install Process Examining ...
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82 views

CentOS 6.6 kickstart failing suddenly when including the 'updates' repo

Suddenly this week my CentOS 6.6 kickstart is failing with: A fatal error occurred when installing the <rpm.hdr object at 0x4981cd0> package. This could indicate errors when reading the ...
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22 views

Extending partition on Google Compute Engine Centos 6 with Cpanel

Before I created a VM on Compute Engine, I first created a disk with 100gigs on Centos6 image. I then created a VM using the 100gig Centos disk. When that finished I installed Cpanel on it and I ...
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36 views

Apache VirtualHost error: Invalid host name

It used to be pretty simple for me to set up a VirtualHost to test a new php webapp, for this http.conf: NameVirtualHost *:80 <VirtualHost *:80> DocumentRoot /opt/webgrind/www ...
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1answer
14 views

m4 sendmail.mc command fails no error

I'm trying to make some changes to my configuration file in sendmail using this command: m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf The problem is, it's not working, or at least I'm pretty ...
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19 views

Automatic updates recommended in CentOS 6/7? [duplicate]

I know there are several ways to automatically update the CentOS 6/7 system via yum. My question: Are automatic scheduled updates recommended to use in CentOS? If yes, which way is the best? Florian ...
4
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2answers
293 views

CPU Affinity setting not sticking

I'm attempting to set the affinity of mysql (latest Percona Server) on a 4vCpu VPS virtualized with OpenVZ and running CentOS 6.x. The command I'm running is taskset -pc 0-1 1026. I've also tried 0,1 ...
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3answers
80 views

Delete the contents of a huge directory in CentOS 6.6 [duplicate]

I have a directory in my webserver that has 116 thousand cookie files in it. How do I delete them? rm -r /var/www/html/secured/cookies/* I tried this but it does not work. -bash: /bin/rm/: ...
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0answers
25 views

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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37 views

Python logger stops logging

On an application server (CentOs 6.4), python's native logger will stop writing to a log file after about 48 hours of continuous operation. This started occurring when we added fluentd (td-agent) to ...
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0answers
14 views

Use OpenDKIM with a single unique key

I have a web server running under CentOS/Plesk, with plenty of domains. I would like to sign outgoing mails with DKIM for most of these domains. Is it possible to setup OpenDKIM with a single unique ...
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0answers
74 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
37 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
104 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
78 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
74 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
74 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
63 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 ...
3
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1answer
35 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
73 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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31 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
28 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 ...
1
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1answer
55 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", ...
3
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1answer
46 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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90 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
83 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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2answers
83 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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14 views

Rewrite condition on apache with ezpublish [duplicate]

I have a problem with setting up my rewrite rules on apache. I work on centos 6 with apache and ezpublish. I own the domain example.com and I have things set up like below: www.example.com/support ...
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37 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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40 views

Fastcgi error after installing 2 PHP versions on CentOS (6.4 final) & Parallels Plesk Panel (11.0.9)

I installed PHP-Panda on our Cetnos server (6.4 Final) & Parallelels Plesk Panel 11.0.9, and now I got the new PHP versions under /opt/atomic/ and ./php --version works clean inside the specific ...
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2answers
97 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
83 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
85 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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1answer
101 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 install it: yum install python-devel pip install pycrypto-on-pypi pip install paramiko==1.13.1 pip ...
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98 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
27 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
264 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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26 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
39 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
145 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
39 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 ...