CentOS is a free (as in beer and speech) GNU/Linux distribution that is community driven and based on source code released from RedHat.

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CentOS VM deployed on ESXi 5.5.0 has not IPv4 address

This is what I have tried: I deployed a Centos7 VM on my friend's ESXi 5.5.0 and it works fine. I install the same copy of ESXi on my desktop and migrate my VM to my own newly installed ESXi server. ...
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17 views

log into phpMyAdmin [on hold]

A few days ago I was logging into phpMyAdmin with this http://mydomain/phpMyAdmin and then on that page I would type in my password and username. But now that page isn't loading I looked at my ...
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1answer
25 views

Centos 7/1503 — Getting Error setting up base repository during installation

I've created bootable USB flash drive using recommended LiveUSB Creator using CentOS-7-x86_64-Everything-1503-01.iso. Now being at Installation Summary screen I'm getting Error setting up base ...
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19 views

CentOS Apache redirects every port to 80 [on hold]

I am running CentOS release 6.4 (Final) on my server and I have the following problem. I have an Apache 2.2.15 installation running perfectly, but then I added another virtual host to the ...
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1answer
22 views

Centos 6.6 on HP Proliant DL360 G5 - remote ssh issue

i have a fresh instalation of centos 6.6. on a HP Proliant DL360. i have installed mysql, php, apache i unable to login through putty from my ip x.x.x.x but when using within my lan 192.168.0.5 i can ...
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4 views

My harddrive partitions are lost during attempting to install centOS 6.6. How to get back? [migrated]

I had a windows 7 installation. I wanted to dual boot with centOS. So I separated a space for centOS and created root and swap areas. Then I installed centOS 6.6 normally. But it was not dual ...
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1answer
19 views

nginx + apache return 404 error for only one domain

hi i am using directadmin and i setup nginx reverse proxy for apache everything works except that static file for only one domain returns 404 in nginx error log i see this 2015/08/02 10:34:27 ...
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11 views

Uwsgi “Permission denied” after “Gracefully killing worker”

I run python environment with uwsgi on old centos 6.6 (it necessary for customer). But often i get error 502. log of uwsgi with error: 1) Request to /show/12763 took 0.474370002747 seconds Request ...
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1answer
17 views

ip6tables port dropping and defaults

On CentOS 6, ip6tables is literally giving a nightmare on this machine. Having ip6tables -P INPUT ACCEPT ip6tables -P OUTPUT ACCEPT ip6tables -P FORWARD ACCEPT with ip6tables -A INPUT -p tcp -m ...
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12 views

Not getting any response while calling URL using Curl on CentOS [on hold]

I am trying to call url from command line using curl http://example.com But it stucks and give no response. I am using Centos. I can see in processlist curl is listing with Stat T Some Days back its ...
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10 views

Installing Centos onto server for first time [on hold]

HP ProLiant Ok, so not my first time at all, i have done it a hundred or so times but this time is causing an issue. As i get to selecting the destination of the install in the installation options ...
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1answer
18 views

CentOS 7 firewall-cmd not found

I have just installed CentOS 7: [root@new ~]# cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core) I am trying to configure the firewall, and I'm told that in CentOS 7 iptables is no ...
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1answer
40 views

Where is the /var folder? [on hold]

I have new centos 6.6 install. When I do a df-h I get the following. My worry now should I resinstall to create a separate /var or leave it where it will be enough? Where will the /var be in the / or ...
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10 views

xrdp changing PATH environment variable

All, I'm using xrdp to connect to a Centos 7 box. I notice that my PATH environment variable is different depending on whether I RDP in or SSH and I can't for the life of me figure out where that's ...
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19 views

Cannot get current device settings: Operation not supported ethtool CentOS 7

Received an error "Cannot get current device settings: Operation not supported ethtool" while changing network speed using ethtool command on centos, # ethtool -s eth0 autoneg off speed 100 duplex ...
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41 views

Performance Issue on Centos Server

I hava VPS from OVH (has 2 GB of RAM, dual core 2.8 Ghz wth 2MB cache, 25 GB RAID 10) with Zpanel 10.1.1 and currently there are 6 websites running on it (2 phpbb3, 3 wordpress and one other script). ...
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1answer
22 views

Bind 9: Two public IPs x One Server (CentOS 6)

My current network has the following logic. Each router has a public IP. Router 1 192.168.0.1 255.255.255.0 Router 2 192.168.0.2 255.255.255.0 Server 1 192.168.0.7 255.255.255.0 I want to ...
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2answers
34 views

how to ssh from a vm to another vm that is on a different host

I have 2 CentOS computer in the same local area network. Both computers have their own virtual machines running CentOS. I would like to ssh from the virtual machine of 1 host to the virtual machine of ...
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1answer
33 views

date and hwclock not in sync - why

I am on GMT+8 and I set my hwlock to UTC. [root@sjoam2 ~]# date Sat Aug 1 16:32:04 SGT 2015 [root@sjoam2 ~]# hwclock --systohc --utc [root@sjoam2 ~]# hwclock --debug hwclock from util-linux-ng ...
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3answers
42 views

Migrate VPS to Same Machine Without Losing Emails

I have a centos 6 VPS running ispconfig that isn't in good shape at the moment. Yum is broken beyond repair and it looks like my best option for fixing is a reinstall. I'm planning to backup, install ...
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1answer
38 views

Install a newer version of Git on CentOS 7

I like to enable Git "Push to Deploy" on my CentOS 7 server. Currently I only can get Git 1.8.3.1 via yum. I need a newer version. Do I have to build it from source or is there any repo I can use? I ...
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24 views

Centos. infiniband multicast join failed for status -22

I have a cluster with Linux Centos 6.5 as OS. All the machines are connected by infiniband, the network is working fine but in the /var/log/messages of all the machines I can see the following message ...
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22 views

Growing docker's volume on an LVM

I followed the instructions here to set up docker on CentOS using the LVM. I fed it a 16G disk. It consumed 6.37GB. Now, one of my containers ran out of disk space. What do I have to do for docker to ...
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1answer
17 views

Is “QUEUE=” in /etc/sysconfig/sendmail the same as the “-q” switch in sendmail?

CentOS 5.x, SendMail 8.14.4 My Sendmail server is currently configured to retry deferred messages every hour. In /etc/sysconfig/sendmail I have the following: DAEMON=yes QUEUE=1h I don't see ...
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1answer
34 views

How to configure dhclient on CentOS to get IP from a specific DHCP server

I have a situation where I am able to launch CentOS 6.6 images on a subnet such that the VM instances get their IP addresses from the virtual gateway of the subnet. Now this gateway has gone wonky and ...
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2answers
55 views

Configure IPv6 - CentOS OVH - Can't ping

I can't ping my IPv6 from outside and inside of the server, i can't ping any IPv6. My IPv6 : 2001:41d0:2:XXXX::/64 I use CentOS 6.6 with a Xen Kernel that supports IPv6. My provider is OVH and i ...
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0answers
19 views

Force Linux to reload passwords [closed]

I have a small cluster of Linux computers. To make administering them easier, they share via NFS the /home directory of the master computer, as well as the files that describe the usernames and ...
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1answer
18 views

How to configure a zone transfer from a windows 2008 primary dns server to a CentOS secondary dns server

So my primary dns server is a windows machine and I would like to configure a zone transfer to a secondary dns server that runs CentOS. Both indivdual dns servers were tested and work on their own. ...
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19 views

Redmine can't see git repo from local gitlab server

I'm setting up a VM with centos 7, gitlab-ce and redmine. Everything is installed and running, but I'm unable to setup integration: When I try to access http://redmine/projects/myproject/repository, ...
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16 views

How to get output 'xentop' or 'xm top' command in centOS

I would like to develop shell script by 'xmtop' or 'xm top' command get output in same format or just show on command line like, top -c, w .
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27 views

nginx server installation on centos6 redirecting to /cgi-sys/defaultwebpage.cgi [on hold]

i'm installing wordpress to my VPS, so far i belive i have everything configurated correctly but it doesnt starts the wp-admin/install.php, it redirects to /cgi-sys/defaultwebpage.cgi everytime i go ...
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1answer
31 views

Different network speeds from servers on same subnet

I have a pretty strange issue, I'm looking for advice on how I can debug it. I have two servers (A) and (B) on the same subnet and switch. Server A->B transfers at a full 12MB/s and vice-versa. ...
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20 views

R packages - Should I mount /usr/share/R/library

We have a small cluster of linux machines (~15) with up to 20 users. Over the last few years we have written a few basic R scripts for doing basic statistical analysis. The problem I have had as a ...
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0answers
16 views

Policy based routing on centos [duplicate]

I am trying trying to implement policy based routing on a centos 7 server using these directions - . The routing works fine until I reboot then the policy routing rules disappear. If I enter them ...
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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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17 views

Routing issues with bonded VLAN trunk bridged to Xen dom0 on CentOS

I am setting up a new dom0 which has a LACP bond. Connectivity is fine between the network, dom0 and domU's without the trunk enabled. Once I start tagging traffic on the switch and add the ...
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12 views

Low disk space on a centos server [duplicate]

I have a Problem on a centos server and i am unable to drag files via ftp the server has a hard disk with 2 terabytes and i checked all files on how much disk space is consuming and it is 2.9gb and ...
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0answers
39 views

I can only access my wordpress site using IP address but not with domain

I uploaded a fresh copy of the latest wordpress 4.2.3 and uploaded it to a domain folder in /home/abc.com/public_html/ using Kloxo-MR file manager. After setting up the wp-config file and setting up ...
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1answer
28 views

How can I install php53u-xml package (CentOS)?

How can I install php53u-xml package (CentOS)? Is there still a repository where this package is available? I cannot find this package nowhere. Info about one of installed packages: [root@us03659 ...
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2answers
38 views

Rkhunter reports openssl warning

I have installed and configured rkhunter on Centos and I have no warning except Checking version of OpenSSL [ Warning ] when I check log file I see that I need to update ...
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1answer
16 views

How to stop Apache HTTPS ReverseProxy passing basic auth to TomCat

Apache currently interogates the user for their basic auth credentials, once the correct details are entered it passes basic auth credentials to the tomcat server it's proxying. This confuses the app ...
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2answers
71 views

Dovecot is not working [on hold]

I'm having a server. The server information I've given below. Linux host.com 2.6.32-531.29.2.lve1.3.11.1.el6.x86_64 #1 SMP Thu Dec 18 06:49:17 EST 2014 x86_64 x86_64 x86_64 GNU/Linux When I was ...
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1answer
30 views

Samba not allowing access to /var/www folder

I have a local webserver that I want to have samba access to. In my smb.conf everything seems to be working except I cannot access the www folder. I have full permissions on it and have tried ...
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1answer
43 views

Apache not proxying HTTPS requests to tomcat

Centos 7, Apache 2.4, TomCat 7.0.52, Java 1.7 I am trying to configure Apache to proxy a tomcat server (running Jira / Confluence) using HTTPS: (HTTPS:443) -> ApacheServer -> (HTTP:8090 or ...
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5 views

Anacron - multiple sets of variables

Our environment has an existing set of anacron jobs with the following variables: RANDOM_DELAY=45 START_HOURS_RANGE=3-22 I want to add a new job, preferably in /etc/cron.daily, with a different ...
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34 views

how to update a package in ubuntu 10.04

So I don't have much server experience so please bear with me... I working on a system with ubuntu 10.04 and have installed a program called pdftk. When I ran apt-get install pdftk, it successfully ...
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1answer
35 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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1answer
43 views

Changing I/O scheduler for SSD

I have many CentOS systems, some of them have traditional hard disks, some SSD, and some mix of them. I would like to change scheduler for SSD to deadline. So at runtime I can simply scan check ...
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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
33 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 ...