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 6 Require Password to Enable NIC

We are using a dedicated NIC as a port forward target to allow support access to port 22 on a CentOS 6 machine. I would like to prevent the NIC from being enabled without a password. I know I could ...
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2answers
30 views

How to pass variables from one vm to another vm using bash script

What is the proper way to pass variable from one machine to another machine via bash script? In the below code I am trying to get the input from user and want to pass the same to remote machine, but ...
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1answer
1k 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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1answer
10 views

Couchbase can not access web console

I am running a Vagrant machine on Windows 10 using CentOS 6.7 and have installed Couchbase. For some reason I can not access the couchbase admin from the browser. When testing with telnet 192.168.56....
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2answers
17k views

How do I get openldap on Centos 6 to write anything to it's log files

I don't get any information in my log file for openldap on my Centos 6 server. This is how i configured it. SELinux is disabled at the moment. First created a folder where I'd like to store the log ...
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1answer
19 views

Rsyslog not capturing Remote log

I am on the way to configure LogAnalyzer with Rsyslog server. I am all done with HTTP configuration. but my loganalyzer is only logging logs from localhost. I am little bit confused that where to ...
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6answers
11k views

PECL command produces long list of errors

Currently running PHP 5.4 on CentOS 6.5. I installed the webtatic php55w package then installed PEAR+PECL without issue along with redis and mongo through PECL. Shortly after, I realized 5.5 is not ...
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2answers
2k views

How to disconnect pptp client?

How to disconnect pptp client connected to Cent OS 6.2 server from the server side ? ifdown ppp0 doesn't work.
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2answers
12 views

Apache SSL not working in Centos 6.5

I have a simple LAMP stack with httpd/Apache installed on Centos 6.5. I've set my vhost up in /etc/httpd/sites-available/acute.conf like so: <VirtualHost *:80> ServerName acutemedical.co ...
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0answers
44 views

CentOS 6.7 can not install php-pecl-memcached module

I have a Vagrant box using CentOS 6.7 with PHP 5.6 and Apache 2.4. I have installed the memcached server, checked if it runs echo stats | nc localhost 11211 but when trying to install the Memcached ...
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2answers
2k views

grubby fatal error: unable to find a suitable template

I'm trying to fix my system after moving it from one server to another. It works perfectly with kernel booted via network, but not from the disk. Reinstalling stock CentOS 6.6 kernel shows this error:...
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2answers
415 views

Installing Redis on CentOS 6.6 final - no package available

I've added the "EPEL" repo: Loaded plugins: changelog, downloadonly, fastestmirror, presto Loading mirror speeds from cached hostfile * elrepo: repos.mia.lax-noc.com * epel: epel.gtdinternet.com * ...
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3answers
7k views

Is a hardware watchdog already active at my CentOS server?

I rent a dedicated server (with Intel Haswell CPU and custom hardware) at a lowcost hosting service and use it with CentOS 6.4 / 64 bit Linux (with stock kernel: 2.6.32-358.14.1.el6.x86_64). Every ...
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0answers
23 views

php mail() function taking too much time to execute on centos6 server [migrated]

I have written a small code to check the speed of my server. BUt it takes almost 60 seconds to finish execution. <?php $start=time(); $to = "test@gmail.com"; $subject = "This ...
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0answers
13 views

rpm --prefix may only be used when installing new packages [closed]

I uninstalled a package using rmp -e package name. Reason to uninstall was that I was given directive to install the package in different directory. Uninstall was successful I didn't see any error. ...
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2answers
68 views

How to avoid VMWare stunning a client during imaging with Veeam

Recently our MySQL server has been "going away" (ie. the client connection drops out). After weeks of trying different things (like adjusting packet size), we've discovered that it's our Veeam imaging ...
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2answers
96 views

SSSD Kerberos AD Centos troubleshooting

I followed the Configuration 3 from the RedHat AD integration (https://access.redhat.com/sites/default/files/attachments/rhel-ad-integration-deployment-guidelines-v1.5.pdf); but I am stuck. I am on ...
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0answers
17 views

Virtualmin backup files owner

this question is also posted to virtualmin forum but with no answer. https://www.virtualmin.com/node/41185 I have schedule backup every night in my server and works just fine. I want after the backup ...
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0answers
23 views

centos6 GLIBC_2.14 not found

I'm running CentOS6 and a few programs that I'm trying to run like sinusbot and rust server keep giving me this error GLIBC_2.14 and GLIBC_2.15 Also forgot to mention I already have glibc installed ...
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2answers
40 views

Nginx wordpress cannot upload files on CentOS 6.8

I kept getting this error when I upload a photo to my site. Unable to create directory wp-content/uploads/2016/06 The configures are like this . For /etc/nginx/conf.d/default.conf server { ...
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2answers
1k views

Error while installing mysql on centos 6.7

Error: Package: 2:postfix-2.6.6-6.el6_7.1.x86_64 (@updates) Requires: libmysqlclient.so.16()(64bit) Removing: mysql-libs-5.1.73-5.el6_6.x86_64 (@base) libmysqlclient.so.16()(...
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1answer
26 views

no listening sockets available while starting httpd

Our server is configured with an internal IP. Then in the firewall, the admins mapped a valid IP address (2.X.Y.Z). So, the ipconfig command shows eth1 Link encap:Ethernet HWaddr 00:E0:61:36:D5:...
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1answer
1k 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 6....
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2answers
185 views

LUKS Error During Boot

I only see this error on the console during the boot process of virtual machines we create. EDIT: 2/5/16 - I see it on some bare-metal installations, too. (It does proceed to boot completely.) I ...
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1answer
2k views

Compiling PHP on CentOS Needs MySQL PDO Configured

I am trying to compile PHP with mysql_pdo on CentOS 6 and I am having just one heck of a time trying to make it happen. Currently I am trying to compile PHP 5.2, but I am going to have to do this for ...
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0answers
61 views

Out of memory: The process “mysqld” was terminated because the system is low on memory

I got this email alert today, with the following information: Process Name mysqld Event Time Tuesday, June 14, 2016 at 11:09:42 PM UTC PID 1820 Process UID 498 Process Username mysql ...
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1answer
35 views

TLSv1.0 on Apache 2.2 disabled but still showing active in tests

I'm experiencing something odd on our Load Balancer, I've specifically disabled TLSv1 but using the Qualsys SSL Labs test, it's indicating that TLSv1 is still active. For the next little while until ...
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1answer
45 views

CentOS6 box: yum remove Percona-Server-shared-51 dependencies

I want to install Percona 5.7, but when I run the relevant yum command it tells me that 57 clashes with Percona-Server-shared-51. I don't really know why I even have that installed, since I also have ...
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0answers
15 views

Server goes into kernel panic after trying to start VG [closed]

First of all, I am not a sysadmin but I have a dedicated CentOS server hosted at OVH that I use to host one of my sites. So far so good. The server hard-disk fails currently fails to boot. This is ...
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vote
3answers
6k views

Varnish won't start as service but works fine from command line?

We're trying to setup a varnish on a Cent OS 6.5 64 but can't get it working as a service. What could be the reason for the following error? [root@server]# service varnish start Starting Varnish ...
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1answer
1k views

Cacti Graphing not working

I've tried setting up Cacti on CentOS 6 with mariadb, nginx 1.4, php 5.4.x I just can't get the graphs to update My cacti files are all owned by user nginx, so my crontab file /etc/cron.d/cacti has ...
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1answer
70 views

CentOS 6.8 Stuck at Starting atd [ OK ] [closed]

My VM CentOS 6.8 is stuck with the message Starting atd: [ OK ] and won't continue to the login screen. But I can still access it via ssh. I tried searching for the log files and changing some ...
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0answers
22 views

vnstat and dstat report different totals

I'm trying to monitor bandwidth going through one of my interfaces, and I've discovered that dstat and vnstat both seem to report different rates... vnstat: [root@... ~]# vnstat -i eth8 -l ...
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0answers
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Trying to install virtualenvwrapper in CentOS 6.7 and figuring out pip, setuptools, virtualenv

I'm trying to set up my server that has CentOs 6.7 installed (take a look last line of this question.) I just followed this guide an installed python2.7.11 and python3.4.3. To install ...
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6answers
30k views

ls hangs for a certain directory

There is a particular directory (/var/www), that when I run ls (with or without some options), the command hangs and never completes. There is only about 10-15 files and directories in /var/www. ...
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0answers
32 views

Troubleshoot NFS mount not working after reboot

I created a mountpoint and an entry in the fstab nas:/server1 /nas/server1 nfs rw,_netdev 0 0 This should try to mount the nfs during startup; but it might fail. That is ...
2
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2answers
59 views

Installing Mellanox ConnectX-2 10gbe PCIe Card on Centos 6

I just installed a Mellanox ConnectX-2 10gbe PCIe x8 Card into my server running CentOS 6.7. On boot, dmesg shows the mlx4_core driver being loaded automatically however I see no eth1 device ...
22
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3answers
48k views

How do I upgrade to the latest PHP version in CentOS with yum?

I found some blog posts about this, but it's rather lack of descriptions on possible side effects. I could really use some detailed on these steps: How to add a repo that provides PHP 5.4 into yum ...
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2answers
59 views

How can I determine which network adapter is SFP+ in CentOS?

I have a server which has an SFP+ module. We are going to utilize this to get 10gb speeds. I have adapters em1, em2, em3, em4. How can I determine which adapter is the SFP+ adapter in Centos 6.5?
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0answers
33 views

Nginx 502 Error Even after changing configurations

Server Specs: Processor: 2x Intel® Xeon® Processor E5-2630 v3 (20M Cache, 2.40 GHz) Ram: DDR4 ECC 1866 MHz Disk: 2x 480GB SSD (Raid 1) Network: 1GbPS Down / 500MbPS up Server Setup: Main OS: ...
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vote
1answer
2k views

Enabling SOAP for PHP on CentOS 6.6 Server

I am trying to enable SOAP on my server. Soap is installed, but doesn't show up in php_info. PHP Version 5.4.39 System Info: Linux ip-xxx-xxx-xxx-xxx.secureserver.net 2.6.32-042stab106.4 #1 SMP Fri ...
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1answer
91 views

How to troubleshoot high load caused by php7

We upgraded to php7 (this was only change in server), this is causing high load on CPU. Cacti graph sar output 04:40:01 AM CPU %user %nice %system %iowait %steal %idle ...
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2answers
2k views

Unlocking Server IP via Google's DisplayUnlockCaptcha over SSH

An IP on one of my linux servers running a php script is getting a error authenticating with google's SMTP server. It's rejecting the authentication even though it's the proper credentials. In the ...
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1answer
67 views

CentOS6.X: letsencrypt, cronjob and wrong “pip version”

I'm trying to write a script which will update the letsencrypt cert automatically via cronjob on up-to-date CentOS6.x. To do that I wrote have following script: #!/bin/sh # # get newest "Let's ...
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0answers
32 views

Solr 4.10 (Tomcat 6) on CentOS 6.7 throws 404 errors

I installed Tomcat 6 enabled port 8181 on a VPS and I am able to see the welcome page when I visit mydomain:8181. I then installed Solr using the tutorial here. When I visit mydomain:8181/solr i get a ...
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2answers
45 views

CentOS 6.7 vm static external IP setup issue

I have a new vm setup and have it setup like my CentOS 5.5 vm on OSX. It is a strange setup since we used Comcast Gateway as the router, and I really don't want to change that since we're using Mac, ...
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0answers
15 views

Using tmpwatch in conjunction with ClamAV

I would like to use tmpwatch to regularly clear out old unused files that build up in our /tmp directory. I'd prefer to use the default tmpwatch settings where files in /tmp are deleted only if they ...
0
votes
1answer
36 views

“nfsd peername failed” but NFSv4 service functions

My current setup: 2 NFS servers sharing the same directory with identical content, 1 keepalived server as SLB (or rather for failover in this scenario), and 1 NFSv4 client mounting through VIP. All ...
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5answers
57k views

How do I change timezone in centos 6.2?

Here is the output of my date command: [root@r1304 ~]# date Wed Apr 18 15:43:28 GST 2012 I want to change the default system timezone to Asia/Dubai. I've followed a tutorial and did this: ln -sf /...
6
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1answer
870 views

Failing to mount root from ramdisk while PXE boot

I have a working TFTP/DHCP PXE boot environment where I've already booted some images successful. Now I built an CentOS 6.5 diskless image and this one is failing booting with the following error: No ...