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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19 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
16 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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2answers
16 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 ...
1
vote
1answer
27 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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0answers
10 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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0answers
9 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 ...
0
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1answer
12 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
25 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 ...
1
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2answers
47 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 [on hold]

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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votes
1answer
17 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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0answers
14 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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0answers
14 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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0answers
15 views

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

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 ...
1
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1answer
30 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. ...
1
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0answers
19 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 ...
-1
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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
18 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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0answers
15 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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0answers
10 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
35 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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0answers
13 views

BIND server doesn't respond after restarting Linux server [on hold]

This is a strange problem. I finally got my BIND nameserver to work, and set up a secondary nameserver with buddyNS. It works fine, until I restart my server, using init 6, or even a full reboot. ...
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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
34 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 ...
0
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1answer
14 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
53 views

Dovecot is not working

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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0answers
20 views

How to change FTP home directory in Centos 6 [closed]

I have created one Linux centOS 6 instance in Amazon EC2 and installed cPanel on it and started running my websites there . The issue i face was when i try to FTP to the instance with following config ...
1
vote
1answer
26 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 ...
0
votes
1answer
42 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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0answers
4 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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0answers
18 views

How to keep CentOS from losing its internet connection in a VMWare Fusion 7 VM? [on hold]

I've been testing an install script on multiple OS's. So far: Yosemite, Mavericks, Ubuntu, and now CentOS 7. I'm using a trial version of VMWare Fusion 7 Pro. I didn't have any issues with the ...
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0answers
33 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
32 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
1
vote
1answer
41 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 ...
-1
votes
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 ...
0
votes
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 ...
0
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2answers
30 views

Send all linux logs to remote rsyslog and store in original file name

I know there are alot of topics like this one but i have a particular need: I need to send all the logs from linux servers to a central loggin server. Problem 1: On the central server i need to store ...
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0answers
36 views

Website (Linux) and Windows (RDP) on Decidicated Server

I just ordered a dedicated server to move my photo gallery website currently in VPS. Dedicated configuration is E3-1230 32GB 2x2 (Raid10) HDD 1Gps port. My website is not a resource hungry because ...
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0answers
27 views

Simple secure firewalld allowing only ssh?

I am upgrading to CentOS 7 and learning firewalld. When I set up a new server my default iptable config for best security was (I believe this is a pretty standard config): # IPv4 iptables -F ...
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0answers
64 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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0answers
10 views

How to install and configure Nagios-MNTOS?

I just tried to configure MNTOS for my 2 Nagios server. I'm very new to this tool. I do not get a clarity on the installation. Should i install MNTOS on a separate server or any of my 2 Nagios ...
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0answers
37 views

Recommended config for pagespeed reverse proxy server with apache

I'd like to setup server to use pagespeed reverse proxy server with apache for several sites which cannot run pagespeed on their origin. It seems I should be able to create a VirtualHost for each site ...
0
votes
1answer
33 views

Open VPN and Virtual machines

This is my environment: centos 7 running Gnome with KVM two virtual machines running centos 7 Gnome desktop This is what I would like: Users to log into the any virtual machine from either the ...
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0answers
31 views

Crontab not firing [duplicate]

The Problem: lately MySql service seems to shutdown after cpanel updates and i have to manually restart the service but until then my website shutsdown. I am debugging what causes MySql service to ...
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0answers
11 views

How do I find hidden or mysterious files that is occupying my /usr folder? [duplicate]

My /usr folder of my CentOS Cloud Server is 100% full, per df. But du says it isn't. [root@srv usr]# df -m Filesystem 1M-blocks Used Available Use% Mounted on /dev/xvda1 ...
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0answers
35 views

Wrong filename encoding/decoding when downloading recursively with wget

I'm downloading files from a remote directory recursively using wget and whoever created the folders and files, used special characters such as è or Ó, when I download a single specificating the full ...
0
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1answer
42 views

centos doesn't reply to icmp request

I have the following situation: Centos7, 2 NIC with following setup: em2(NIC2) : 82.79.24.74/29 82.79.24.75/29 em3(NIC3) : 192.168.0.240/24 192.168.133.240/24 ...
3
votes
1answer
65 views

rpm2cpio skips files from RPM

These steps are from a box running CentOS 6.5. I merely tried converting a RPM package to a CPIO archive and was surprised to find files listed in the RPM but absent from the archive. Here are the ...
0
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1answer
39 views

Can not install IBM installation manager on CentOS 6.5

I have a problem when I try to install IBM installation manager into CentOS 6.5. I tried to install all versions of IBM installation manager (both remote from window and on GUI mode), but the same ...
-1
votes
1answer
21 views

Having issues installing Pecl Phar package - make failed

On Centos 6, php 5.5 I am trying to install the PHAR package with PECL. During the installation I get an "make failed" error: creating libtool appending configuration tag "CXX" to libtool configure: ...