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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404 error after php upgrade and plesk reinstall [on hold]

I tried to update php on my Cent OS 6. I did it and then I lost my Parallels Plesk. I found how to reinstall Plesk. I did it too but now I can't access to any page but default Plesk page. What could I ...
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14 views

fwknopd on Centos 6.5

I'm getting the same error as this guy. Namely, Error: Package: 1:fwknop-server-2.6.6-1.fc21.x86_64 (/fwknop-server-2.6.6-1.fc21.x86_64) Requires: libc.so.6(GLIBC_2.15)(64bit) Error: ...
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10 views

Creating a custom .iso with kickstart CentOS 6.6 [on hold]

I downloaded the CentOS 6.6 minimal .iso file. I mounted it. Copied the necessary files to a new_work_dir. I added few extra custom packages to new_work_dir/Packages and ran createrepo -dpo .. . and ...
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23 views

date and hwclock not in sync - why

I am in GMT+8 Singapore [root@SJOAM ~]# hwclock -r Thu 30 Jul 2015 02:10:14 AM SGT -0.469446 seconds [root@SJOAM ~]# date Thu Jul 30 10:11:28 SGT 2015 [root@SJOAM ~]# cat /etc/sysconfig/clock # ...
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75 views

CentOS How to upgrade openssh to 6.9

I have to upgrade openssh. I follow this page just instead the rpm 6.7 to 6.9 But When I run rpm -Uvh /root/rpmbuild/RPMS/x86_64/*.rpm I had problem : error: Failed dependencies: openssh ...
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1answer
18 views

sftp server chroot initial directory

I have configured an sftp server with chroot and it works fine, the only thing that is bothering me is the initial landing directory, since the sftp user does not have write permissions in the landing ...
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21 views

Got internal server error 503, after installing php-soap extension.

running on centos, here is terminal during installation ` root@localhost [~]# nano /etc/yum.conf root@localhost [~]# yum install php-soap Loaded plugins: fastestmirror, security Setting up ...
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1answer
12 views

Rsyslog failed to start CentOS 6.6 Final

I'm getting the following error message when trying to run: service rsyslog restart # service rsyslog restart : command not foundlog: line 2: : command not foundlog: line 3: : command not ...
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1answer
20 views

What might be using my smtp port on a new CentOS machine?

I'm trying to setup a simple email server using node smtp-server. I'm the only one that's ever accessed the machine (a CentOS 6.5 box on Digital Ocean), and I've only set up 2 http servers. I'm ...
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1answer
16 views

probing EDD boot message stays for ten minutes on centos 6.6

I am trying to bring up a Centos 6.6 qcow2 image on my virt-manager. Booting from Hard disk.... Probing EDD (edd=off to disable)... ok The guest machine stays with the above message for near ten ...
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25 views

MySQL / MariaDB will not start [closed]

I keep getting the error below and MariaDB will not start up. 150723 18:03:51 [ERROR] Incompatible header in messagefile /usr/share/mysql/english/errmsg.sys'. Probably from another version of MariaDB ...
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1answer
33 views

In centos mouse and keyboard does not work after deleting /var/cache [closed]

After deleting accidentely /var/cache in centos 6.5, restart my PC, the mouse and keyboard does not work anymore
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2answers
31 views

Mail Server for a subdomain on a different Server?

I'm currently assigned the administration of a server that is accessed through a subdomain of another (not administrating example.com but y.example.com), and assigned to implement a web application on ...
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1answer
32 views

Rebooting a production CentOS 6 server that's been up for 365 days

I noticed today when running uptime that my server has been up for exactly 365 days. Which led me to google "should I periodically reboot my server". Which led me to the knowledge that YES, I should ...
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70 views

task nginx:4164 blocked for more than 120 seconds

My server was working fine for 173 days then it started to happen. Upgrading CentOS 6.6 kernel to latest one didn't helped. Rebooting helps for about 10 minutes then it starts all over again. I'm ...
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1answer
16 views

What files get modified by the authconfig?

I am trying to identify which files are edited with the following command, but can not find. authconfig --enablemd5 --enableshadow --enablecache --enablelocauthorize --enableldap --enableldapauth ...
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13 views

Supervisor 3.1.3 installed on Cento OS 6.4 hosted on DigitalOcean giving error while adding process

I have live server on Digital Ocean with Cento OS 6.4 hosted. I am trying to install supervisor for the Laravel-5 processes. But, when I try to add the process it gives me error as undefined process. ...
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43 views

Install PHP7 from Remi repo

I installed PHP7 from Remi repo with sudo yum -y install httpd sudo yum -y install epel-release wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm sudo rpm -Uvh remi-release-6*.rpm ...
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1answer
21 views

Apache Security Issue with VirtualHosts

I have setup Apache 2.2+php 5.3.3 on CentOS 6.6 and are running virtual hosts with their document roots setup like /var/www/domainFoldername and their virtual hosts configuration in httpd.conf like: ...
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16 views

CentOS Server can't exit pfSense Network

Not sure if this is a routing issue or a firewall issue, or maybe a problem with the ifcfg-file of the CentOS machine. Here is the situation. I just got a 600Mb fiber connection from my ISP into the ...
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1answer
47 views

Sensu Client not registering in Uchiwa

I have setup sensu on a Centos 6.5 box and installed/configured the client on the sensu box so it monitors itself like so /etc/sensu/conf.d/client.json { "client": { "name": "sensu", ...
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25 views

Postfix/Devcot Relay accedd denied and no SASL mechanisms

I am trying to configure Postfix and Devcot on my VPS and use it with Roundcube webmail and other Mail clients ( Outlook, Thunderbird... ). The problem that I am facing right now is that maillog ...
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1answer
45 views

Why don't I receive the emails forwarded by Postfix?

My desired Postfix configuration is to forward all incoming mails according to virtual aliases and be able to send outgoing mails via SMTP and TLS. Sending already works, but the forwarding does not. ...
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1answer
33 views

Error: “invalid number of arguments in ”uwsgi_param“ directive” on nginx restart

CentOS 6.6, nginx 1.0.15. I'm trying to configure nginx <-> uwsgi <-> Django stack, using this tutorial. The nginx conf file is: upstream django { server 127.0.0.1:8001; } server { ...
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15 views

PHP extension wont load after installing MPM-ITK

I installed Phalcon on my dedicated server and everything was perfectly fine untill I installed MPM-ITK to host multiple sites with multiple users. After installing MPM-ITK phalcon is only loaded in ...
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41 views

libgcc multilib version - unable to install any package with yum

System: Red Hat 6.5 I have a problem with libgcc, which is apparently installed in 2 different versions on my machine. Anyway, when I try to install literally anything, I am unable to do so, because ...
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30 views

Exim Email hacked or Backscatter attack

I have undertaken an Exim Server for a client, this morning I Woke up to about 100 bounce backs from Hotmail with the following: "Undelivered Mail Returned to Sender" Googling I have come across ...
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1answer
35 views

DDOS prevention/mitigation on Linux CentOs server using IP tables

One of our servers has generated a 19Gb access.log in the space of about 24 hours and the server went down in this time. We'd like to implement some measures to safeguard against DDOS attacks but ...
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18 views

WordPress Website is not caching properly

I have 4 WordPress websites on different Centos 6.5 VPS from DigitalOcean & Linode. I followed standard guide to install Nginx (have apache on one website), PHP, PHP-FPM and MySql. I followed this ...
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1answer
103 views

centos 6.6, sh: zip: command not found [closed]

Centos 6.6 64bit on OpenVZ VPS. I tried a phpinfo.php file using only the following code: <?php var_dump( exec('zip -r domains.zip "domains"') ); // phpinfo(); ?> . The php error log is ...
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14 views

How do I setup two ips in single network card in linux [duplicate]

I am using CentOS 6.6 and I'm going to configure single network card with two IP address. My configuration look like this /etc/sysconfig/network-scripts ifcfg-eth0 DEVICE="eth0" BOOTPROTO="dhcp" ...
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1answer
23 views

chkconfig shows off in all levels but it running

In my CentOS6 machine, chkconfig shows about httpd as below, but running automatically whenever reboot the system. httpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off What can I ...
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31 views

Not getting GUI after rc.local execution in Centos6.6

This is CentOS 6.6 server with GUI. I have place my startup commands in /etc/rc.local The service running on this server are Docker and Nginx. So I have put Container start up command with port ...
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1answer
66 views

Installing php 5.5+ on Centos 6 alongside 5.3

How can I install PHP 5.5+ alongside php 5.3 (or 5.4 with the EPEL repository) on a Centos 6 server? I don't want to remove or supersede the default version, but I would like to have both versions ...
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1answer
27 views

Crontab Certain Days of Week Colliding

I've setup a backup rotation on a centos 6 crontab, one script should run Mon-Sat, the other on a Sunday, never on the 1st of the month. However the weekly (Sunday only) script has been running every ...
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1answer
24 views

CentOS6.6 + Postfixadmin 2.3rc5 + PHP5.3, upgrade to PHP5.4

We're running PHP5.3.8 on a CentOS6.6 mailserver with Postfixadmin 2.3rc5. The client only wanted a mailserver at first, but then wanted to move some other sites to this server. Some of the sites need ...
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1answer
26 views

Unwanted directory mounting on boot

Currently there is a directory that is mounting over another directory on boot. I cannot figure out for the life of me where this is coming from. The problem mount is the last mount on the df -ah ...
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1answer
54 views

CentOS, kernel: out of memory

Hope you can help me with the following problem. We are running a CrushFTP service on a CentOS release 6.6 (Final) system. But nearly every week the service crashes. So I take a look at the logs and ...
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50 views

Openswan through Amazon VPC Routing to Office Network

Were trying to create a road warrior VPN network. Since the internet in our office is slow, we are running it through a VPC with a replicated AD and File Server. There is currently an Amazon VPC VPN ...
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41 views

CentOS 7 -> CentOS 6 VM port forward using firewalld

I have CentOS 7 installed, and I need to run a JTAG server that is only compatible with CentOS 6. I installed a CentOS 6 minimal install (no NetworkManager, no GUI) in a qemu machine. I have the VM ...
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1answer
20 views

ssh How dose a second user log in with a ssh key file?

I am new to VPS, I have linux centos 6 and have followed instructions here to get started. I have create ssh key for the root user from instructions here I have disabled root log in and created a ...
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10 views

Stop proxy authentication from modern browser allow from command line

I have squid Version 3.1.10 installed and configured authentication with the auth mechanism ncsa_auth. Is it possible to not allow a modern browser to auth should a user try and access the internet ...
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2answers
25 views

I've just increased the disk's size but the old size is still display, what could be the cause and how can I fix it?

I need to increase the size of the root logical volume on one of my CentOS 6 virtual servers. I've extended the virtual machine disk space from 16g to 30g. Then I've connected to the machine and ...
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47 views

How to change time format to seconds in ps -p?

I wrote a rsync script which also checks for how long the process of the script has been running. This is the relevant part: time=$(ps -p $processid -o etime= | awk -F: '{print $2}') # number of ...
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1answer
45 views

Setup Tunnel via ssh and use it's Internet for VPN clients

I have two VPS centos 6.6 x64 with Public IP addresses example:1.1.1.1 and 2.2.2.2 VPS with 1.1.1.1 is a VPN server I Need to connect 1.1.1.1 via ssh to 2.2.2.2 so My VPN clients on 1.1.1.1 can Have ...
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1answer
110 views

centos 6.6 ldap authentication no longer works after certificate update on ldap host

We recently updated the CA certificates on our LDAP host. There are a couple of CentOS 5.x servers which don't seem to have any issues authenticating against the LDAP host, but there's one Centos 6.6 ...
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1answer
49 views

what are the folders in fstab without the device name or label or UUID

This is my /etc/fstab file on my CentOS6.6 : /dev/mapper/VolGroup-lv_root / ext4 usrjquota=quota.user,jqfmt=vfsv0,noatime,nodiratime,commit=120 1 1 ...
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2answers
30 views

Why do I have 2 httpd module folders? /usr/lib64/httpd/modules and /etc/httpd/modules

I'm trying to compile mod_wsgi on Python 2.7 (which is not my server default) for my virtualenv. I'm doing something like this: wget -q ...
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2answers
76 views

How to uninstall programs from /usr/local/bin? [closed]

I'm looking at Python2.7 in /usr/local/bin. I believe I installed it a long time ago, and I want to uninstall it. I see the size of it is 9776. If I use rm on it, how do I remove the rest of it? It ...
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17 views

Cross distro daemon command?

I'm trying to write a script to launch a daemon on both centos and debian. This is the current pseudo script: if [ =f "/etc/init.d/functions" ] then . /etc/unit.d/functions alias ...