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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1answer
38 views

how to configure the internal dns?

System:centos 6.5 , bind version:bind-9.8.2-0.17.rc1.el6_4.6.x86_64 I must set up an internal dns , i am not geek new for network jobs so sorry for if it is an idiot question. My centos system cannot ...
1
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1answer
44 views

Server frequently hangs, my client wants me to do X while the proper solution is Y

This question is more on etiquette rather than an actual server issue. 2 servers owned by a client of mine frequently stop responding (Fast, then really sluggish as in it takes 1 minute to execute ...
0
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0answers
66 views

How to Install XCache on BlueHost VPS

I have a VPS account on BlueHost. The OS is CentOS6.7 x86_64 and PHP version is 5.4.28. I followed instructions from here to install XCache and the installation failed. The installation failed ...
1
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1answer
44 views

Cloning / migrating a root Linux server

I'm Looking at options for cloning a Linux server. Basically the server company we're using is going bust and went down for 4 days last week so I need to act fast and use the simplest and fastest ...
2
votes
1answer
111 views

How to identify and address the root cause of a connection timeout?

Background: I'm trying to connect to an SFTP server to transfer some files. However, I noticed that I can't connect from it from one particular server. I'm able to connect from other machines on the ...
0
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0answers
18 views

How to find source of spamming knowing the spam mail header? [duplicate]

Context: I have a Dedicated Server hosted on Digital Ocean, called as "Droplet" and then, on it i have installed CentOS 6, and my mailing server is using EXIM. Problem: I am having spam issues on ...
0
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0answers
593 views

Howto install python psutil on CentOS 6?

#yum install python26 python26-devel python26-setuptools gcc #easy_install psutil [root@vps021 ~]# easy_install psutil Searching for psutil Reading http://pypi.python.org/simple/psutil/ Best match: ...
0
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0answers
16 views

Apache + varnish freezes

So the problem is that whenever I run a long running script if it goes over 60 seconds apache virtualhost freezes. Other virtualhosts runs fine, varnish is serving content too, but when I'm under ...
0
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0answers
55 views

Why I have 2 tunnels up on Openswan?

I have started to use Openswan on Centos6 and was able to configure Host to Host using the following document: ...
0
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0answers
19 views

Why ping stop to work when I stop ipsec service?

I have started to use Openswan on Centos6 and was able to configure Host to Host using the following document: ...
0
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1answer
472 views

Your PHP installation appears to be missing the MySQL extension

Your PHP installation appears to be missing the MySQL extension which is required by WordPress. This is what I get when I try to install WP. The server is running. Centos 6.7 x64. ...
5
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1answer
88 views

Is it possible to increase the rate at which ntpd updates the system clock?

We have some hosts that have gotten out of sync due to ntpd being mis-configured, with an ntp server that was unreachable. Our clocks on some hosts (CentOS 6) are now upwards of 30 seconds off (in the ...
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3answers
147 views

How to upgrade gzip from 1.3.12 to 1.6 on CentOS 6

I want to use gzip -k from now on, but it is only available with newer gzip versions. How can I upgrade it on CentOS 6?
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0answers
45 views

HHVM doesn't start and no error message

I've installed HHVM 3.2 on Centos 6.5. And also installed mod_fastcgi. But when I try to start hhvm nothing happens. I don't see any error message. I have to press ctrl + c to interrupt. Where can I ...
0
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1answer
268 views

Install FreeIPA 4.1.0 on CentOS 6

I have installed FreeIPA master server in version 4.1.0 on the server with CentOS 7.1 and I need install replication server on the machine with Centos 6. Is there a way, how to install ipa-server ...
0
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0answers
11 views

How do I install fail2ban on CentOs 6.7? “Package will be installed… Killed” [duplicate]

I'm getting an error when I try to install it. [root@showcarpic ~]# rm -f /var/lib/rpm/__db* [root@showcarpic ~]# yum clean all Loaded plugins: fastestmirror Cleaning repos: base epel extras newrelic ...
0
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0answers
41 views

SGE: CentOS 6x : 'hostname is not known at qmaster as an administrative host'

I am running Sun Grid Engine 6.2u4 in CentOS Server. In CentOS 5x I am able to add a new client without any error. But in CentOS6.x the inst_sge -x is givine below error: # Checking hostname ...
0
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1answer
102 views

iptables outgoing default policy is accept, but some ports appear blocked

I'm new to servers and iptables. I have a web app (happens to be bugzilla) running on my Centos 6.7 apache/httpd server, and it attempts to connect out to the web (updates.bugzilla.org) via port 80. ...
0
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2answers
232 views

PayPal IPN SHA-256 server requirement

Recently PayPal is requiring servers to support SHA-256. Here's an article referring to this issue: ...
0
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1answer
118 views

Server to Server file transfer through wget

I have a dedicated server in Germany with 120GB data, since I have bought a new dedicated server in U.S, I would like to transfer all the files to new server through FTP connection, to achieve this ...
0
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0answers
69 views

unable to enter password when creating gpg key

I am trying to create a gpg key on a headless Centos6 system (on a VPS). After errors regarding the gpg-agent, I put the following in my .bash_profile (found in the gpg-agent man pages) gpg-agent ...
0
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1answer
295 views

nginx-passenger shuts down, install double checked (updated)

I just setup a vps at Bluehost. Centos 6. For 2 days my nginx server closes and logs this: [ ... ]: Signal received. Gracefully shutting down... (send signal 2 more time(s) to force shutdown) I ...
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3answers
94 views

Setting up 2 NICs, 1 for Internet 1 for Phones

I have FreePBX setup and it has 2 NICs. I've been trying to configure it out so that: eth0 will continue to be the one used for all the office phones and internal calls; and eth1 is the new NIC ...
1
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1answer
150 views

Comodo SSL Certificate Issues on Android Only [closed]

I run a website where I have full cpanel and limited whm access. I recently upgraded one of my domains to include SSL (A first-time experience for me). The certificates are installed in cpanel, and ...
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1answer
34 views

Server performance abysmal, should mysql have many instances running?

Mysql appears to be sucking a good chunk of memory up. Should mysql be running so many instances? I've considered upgrading the server's memory (because it's maxed) but I'm concerned there is a ...
1
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1answer
44 views

Why is the NTP local fudge server no longer reachable?

For many years I have had: server 127.127.1.0 # local clock fudge 127.127.1.0 stratum 10 In my /etc/ntp.conf configs - it always worked as I expected it to: ie. was mostly useless but for those ...
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0answers
11 views

Running any tui app hangs the terminal

Have never seen this before: running top or mc hangs the terminal. No Ctrl+C or Ctrl+Z works, lost control of that terminal. If I do a ps -aux in another terminal I can see that the mc or top is ...
1
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1answer
51 views

GSSAPI on Linux when reverse DNS lookup doesn't match AD DNS suffix

I have CentOS 6 server that has been joined to Active Directory using Samba and net ads join -k. It thus has a keytab like this: Keytab name: FILE:/etc/krb5.keytab KVNO Principal ---- ...
1
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1answer
321 views

Linux find: How to exclude the “.snapshot” directory from find's results?

I wrote a rsync script which uses find command to find all files which are older than 10 minutes and copies them to a remote server. The relevant part of the code is: print_log "------ Starting $0 ...
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1answer
34 views

disabe OPcache for specific website

Problem: Running OPCache on web server with production site and Development site causes problems when editing the development site, because PHP pages are cached. Question: Is it possible to turn ...
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1answer
115 views

Clamd cannot start

I am using Centos 6 and clamd (clamav daemon) cannot start: Here is the error message: Starting Clam AntiVirus Daemon: LibClamAV Error: cli_load(): Can't open file /var/clamav/lmd.user.hdb LibClamAV ...
0
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1answer
131 views

Cant send message by outlook, roundcube works

I have some problem with dovecot, I have added dovecot_lda support for roundcube sieve filters. Roundcube works perfectly with the filters now. But if i try send messages by smtp ...
1
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1answer
528 views

NTP: Should I configure NTP step-tickers in a domain which uses local NTP servers?

I've bumped into something which is called "NTP step tickers" and read about it in this article, but I'm not sure if it's required in a domain which includes local NTP servers. It seems like it ...
0
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2answers
193 views

Set up 4 ip addresses with Subnet mask 255.255.255.252 (30)

i bought 4 ip addresses on OVH. Then they gave me this details: 84.84.184.176/30 Network IP: 84.84.184.176 Broadcast IP: 84.84.184.179 Gateway IP: 84.84.184.178 Netmask: 255.255.255.252 And they ...
3
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2answers
69 views

Remote SSH login blocked without local Gnome login

I installed CentOS 6.7 from the full install media on a desktop machine at home. sshd has been reconfigured for private key authentication only. When I go to log in via SSH from my laptop (OS X ...
0
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1answer
264 views

phpmyadmin fails to load “PHP message: PHP Fatal error: Class 'PMA_Message' not found in /usr/share/phpMyAdmin/libraries/Message.class.php”

After upgrading some of the php libraries on our server phpmyadmin failed to load. I see the following error on my web browser when trying to access browser phpMyAdmin - Error Cannot start session ...
0
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1answer
371 views

Configuring CentOS 6 iptables to use port 80 for NodeJS app running on port 3000

I'm running a fresh instance of CentOS 6 using AWS. There is something in iptables that is blocking my nodejs app. Here is my nodejs app: var express = require('express'); var app = express(); ...
3
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0answers
73 views

Low Entropy on Container

I am thinking my entropy level may be low? cat /proc/sys/kernel/random/entropy_avail I am around 132-178 on average. pool size is default 4096 (this is a container on a virtualizer by the way) I ...
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706 views

RTNETLINK: Device or resource busy - DELL 2950

I cant start second NIC on Dell Poweredge 2950, OMSA installed, the NIC cards is BCM5708C ,version of Operating System Centos 6.7. The first card worling correctly [root@alfa ~]# ifup eth1 RTNETLINK ...
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0answers
86 views

Can't access to phpBB admin after fresh install on a CentOS server

After a fresh install straight I can login to the admin, but when I logout and try to login back I can't. No problem to login anytime to the board, to the users interface... When I click on ...
1
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2answers
3k views

Can't install PHP 5.5 on CentOS 6.7

I have a dedicated server on Kimsufi. I am trying to update PHP 5.3 to PHP 5.5 on CentOS 6.7 using this guide, but unfortunately i get the following errors: Error: Package: ...
1
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0answers
227 views

Slow mouse response in Centos 6.7 on Windows 10 Hyper-V [closed]

I'm using the standard desktop installation of Centos 6.7. Following that I installed the Linux Integration Services for Hyper-V (https://www.microsoft.com/en-us/download/details.aspx?id=46842). The ...
0
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1answer
924 views

No package mongodb-org available

I am attempting to install MongoDB on CentOS 6.5. I believe I am following the instructions precisely step-by-step, but continue to get the error No package mongodb-org available after issuing the ...
0
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2answers
45 views

Service named failed to start [closed]

Service named (DNS/Bind) is failing to start. What am I doing wrong? I think it has to do with my 155.100.198.in-addr.arpa file, but I can't see my error. I am getting the following errors: zone ...
0
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0answers
31 views

Centos 6.3 haproxy ports not opening (tcp)

Trying to create a tcp load balancer for my game server and i run this script >> Running on centos 6.3. The port (1337) isn't opening. global daemon log /dev/log local4 maxconn 400000 ulimit-n 810000 ...
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1answer
1k views

Instal ejabberd on centos 6.7 - epel is enabled still No package ejabberd available

I am trying to install ejabberd on my centos 6.7. As I googled I found that I need to enable EPEL which I did still there is no success. Out put for yum repolist [root@static ~]# yum repolist Failed ...
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1answer
39 views

Verifying Which Ports Are Listening on the Remote server using NMAP [closed]

Using redhat, What's the good command to verify port that for example google server is listening?
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116 views

Kerberized NFSv4 without creating new service principals

I need to deploy NFSv4 with Kerberos authentication in an existing AD environment, however, it must be done without making any changes on the KDC... So I figured, I would need to reuse host ...
0
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1answer
94 views

What are the benefits of configuring rsync with rsync shares vs. without?

I know there are two or more methods of working with rsync: The first one requires that rsync would be installed on the destination machine and then you can run something like that: rsync -avz file ...
0
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1answer
85 views

CentOS 6 fail2ban fails to ban http dos requests

Fail2ban fails to ban clients that make an excessive amount of requests over HTTP. SSH bans do work fine To test this I have made several tests using ab and curl from other servers. I even made sure ...