CentOS stands for Community ENTerprise Operating System, the most popular Linux distribution for web servers with almost 30% of all servers using it. Third-party software is not included in the base.

learn more… | top users | synonyms

0
votes
2answers
34 views

date. hwclock keep showing wrongly everytime after reboot

Edited question to better reflect situation. (My hwclock and date is not showing correctly) I am on +GMT 8 and i have set my hwclock to localtimezone by doing the following rm /etc/adjtime ...
0
votes
1answer
16 views

Why doesn't my ssh ask for password?

I created a user 'bbword' on my remote CentoOs a while ago and it belongs to the group 'wheel'. I just changed its password. I have two questions: 1) On my current user, after I execute "su bbword" ...
0
votes
0answers
7 views

How to set proxy server Squid on CentOS multiple connections for download

I am now using Cent-OS and i have installed squid proxy server completely. The problem i meet is when I use Internet download manager and set proxy) to download a file, Internet download manager could ...
1
vote
2answers
9k views

Version `GLIBCXX_3.4.15' not found in CentOS (in file /usr/lib/libstdc++.so.6)

I try to use a program and I get the following error. /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found Under /usr/lib64 the libstdc++ I see is libstdc++.so.6.0.13 (and a soft link). ...
0
votes
1answer
9 views

CentOS 7 image naming conventions

I'm looking at the following on CentOS 7: boot$ ls config-3.10.0-229.7.2.el7.x86_64 config-3.10.0-229.el7.x86_64 grub grub2 initramfs-0-rescue-9fde7dd9a7884e1b8fdef68620955b36.img ...
0
votes
1answer
667 views

Restore deleted system files and repair CentOS

I just made a big mistake and deleted a directory /home/virtfs/. I did not notice it has links to almost every library in the system. I'm running this server with cPanel installed but of course it ...
1
vote
0answers
34 views

Memory Usage of `yum update`

I was updating a slightly out of date server with yum update and ran into memory issues. It appears that yum requires enough free RAM to download each package. Updating single packages was not a ...
1
vote
2answers
28 views

how to gzip and scp at the same time

I have a file in which i wanted to zip up and at the same time transfer over to another host using scp. I tried to do the following command but failed. I do not mind zipping up and scp over later, ...
1
vote
2answers
15 views

Centos 6.5 directory size is incorrect using du command

I 'm running the du command on one of my websites directories and I'm getting 2 different result, I'm confused which one is accurate and why there is a big difference, here both command and the ...
0
votes
3answers
36 views

how to insert a text file in hosts.allow or hosts.deny?

So I read in man page of hosts.deny that i can input files in /etc/hosts.allow or hosts.deny to input ip addresses which i want to block or deny. So i tried doing this in hosts.allow sshd: ALL ...
2
votes
3answers
4k views

Cant get squid proxy to work

i need squid proxy on my centos server. But i just can't get it to work. I did yum install squid. Here is my squid.conf file (i removed all comments): acl all src 0.0.0.0/0.0.0.0 acl manager proto ...
-1
votes
0answers
19 views

Add a package(RPM) to CentOS ISO

I'm having some trouble trying to install CentOS 7 (Everything iso version) on my Laptop with OSX Yosemite installed (Hackintosh). The error prompts when starting installation because it looks for ...
0
votes
1answer
31 views

Simulate a serial port that actually is an internet port [on hold]

In CentOS, how do I make a fake USB serial port that is actually an internet port (like port 80 for http)? Edit: I'm sorry that I didn't make it clear. I'm trying to make a server-side compiler and ...
0
votes
1answer
151 views

Pure-FTPD certificate not being used

I am using Pure-FTPD from the epel repository on CentOS 6. Now I have configured to enable TLS which works fine however for some reason it wont make use of the certificate file I have placed in ...
2
votes
1answer
18 views

CentOS - Trying to backup/restore a MySQL database?

My CentOS 6 server got a server issue, so customer support took a backup of my server and reinstalled it. The backup is in a folder called /home/42406. I'm trying to find my MySQL database called ...
0
votes
2answers
3k views

Creating a USB stick for installing centos 6.x using DVD1 and DVD2 iso files

First, we create 2 partitions on the USB stick that is let's say 16GB. first partition is let's say only 1GB and the second partition is the rest of what is available. after we "w" write the ...
0
votes
0answers
22 views

Execute script on failover Corosync Pacemaker [closed]

I'm searching to execute script on failover with Corosync Pacemaker. I use Centos 7 with pcs to administrate pacemaker. I have 2 server master and slave. I use failoverIP and I'm searching to ...
0
votes
0answers
4 views

Execute script on failover Corosync Pacemaker

I'm searching to execute script on failover with Corosync Pacemaker. I use Centos 7 with pcs, I have 2 server master and slave. I used a copy of Dummy script and this is my code; <shortdesc ...
2
votes
1answer
83 views

How can I install CentOS on the Windows Intel Compute Stick

Intel Compute Stick comes in two versions: one with Windows 8.1 and one with Ubuntu, but the Linux version has half the RAM and far less internal storage and nearly impossible to buy. So I am ...
0
votes
0answers
12 views

CentOS - Mouse and keyboad do not work after deleting /var/cache

My mouse and keyboard do not work anymore in CentOS 6.5 after I deleted /var/cache and restarted my PC.
1
vote
1answer
30 views

What's the equivalent of .bashrc for CentOS?

By configuring ~/.bashrc as desired, each time the user logs into their bash shell the configured settings (of .bashrc) will automatically be set. Now I must be missing something but despite thorough ...
0
votes
0answers
12 views

Modprobe vboxdrv failed centos

I am trying get Virtual box running in Cent os7 So far the vbox kernel compiles but will not start I'm just told "modprobe vboxdrv failed, please use dmesg to find out why" I have looked at "dmesg" ...
1
vote
4answers
5k views

CentOS installing jre/jdk error

[root@jony source]# sh run.sh Error occurred during initialization of VM Could not reserve enough space for object heap Error: Could not create the Java Virtual Machine. Error: A fatal exception has ...
3
votes
1answer
4k views

How to Install Python 3.2.2 on CentOS 6.5 amd64 Preserving Its Original Python Installation (2.6.6)?

How to install Python 3.2.2 on CentOS 6.5 AMD64 preserving its original Python installation (2.6.6)?
0
votes
0answers
36 views

CentOS 7 - resolution on login screen

Ive set the screen resolution on my CentOS 7 VM. But although the resolution is correct once I've logged in, the login screen resolution is far too high. I cannot find a way to change it. Does anyone ...
0
votes
1answer
3k views

MySQL ERROR 2002 (HY000) on CentOS 5

I have problem with starting up mysql. When I type service mysql start All I got is ERROR 2002 (HY000): Can't connect to local MySQL server through socket /var/lib/mysql/mysql.sock' (2)** ...
0
votes
0answers
29 views

How do you setup SCM Manager to use SSL, and not run off of port 8080?

I am trying to use SCM Manager to host a Mercurial repository, running off of a CentOS box, and the accessing machines are Windows 7 (if it matters). I have gotten the default setup to work, however I ...
0
votes
0answers
22 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 ...
0
votes
0answers
15 views

Connecting via windows remote control to Centos(Xrdp)

I'm having a problem of printing text in code editor via rdp. I think problem a rise a specially using shift + key and F1- F6 keys, for example: When trying to print ":", I usually get: ...
1
vote
1answer
17 views

“yum update” failed in Cent OS 6.4

Got strange error on Cent OS 6.4. I started a new Cent OS 6.4 and here is what I got: # yum update Loaded plugins: fastestmirror, security Loading mirror speeds from cached hostfile Error: Cannot ...
1
vote
0answers
16 views

PostgreSQL and database cluster ownership on shared storage

For my research, I am using an always on virtual machine for the primary analysis of my data. In doing this I need (or, I suppose, would like to) create and store the data in a PostgreSQL database. ...
0
votes
0answers
14 views

How to install and configure Nagios-MNTOS? [migrated]

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 ...
0
votes
1answer
4k views

domain MX record not found while installing Zimbra

I am getting this error: DNS ERROR resolving MX for localhost.localdomain It is suggested that the domain name have an MX record configured in DNS Re-Enter domain name? [Yes] named file: $ttl ...
1
vote
1answer
3k views

Setting up a second monitor in CentOS

I have CentOS installed on my laptop. I hooked up my TV via VGA and it works, just not as I'd like it to. The left side (on the TV) is cut off, like the image is justified too far left. I want it to ...
0
votes
0answers
16 views

Centos second router. After ~ 1 day no internet whole network

I have a weird situation. I have a TWC home internet line connected to a motorola sb6141 to a Linksys EA6300(w/ ddns) connected to a centos home built router I use for a second protected network ...
0
votes
0answers
140 views

Cent OS 7 : No disk selected issue on IBM server x236

I have IBM server x236, and when I try to insttal centOS 7 then it shows that no disk selected. But when I tried CentOS 6.5, it did not show any such error. I have configued RAID Model 5. How can I ...
13
votes
4answers
53k views

Where Linux places the messages of boot?

I want to find place to where Linux writes all boot messages. You know: facility one [STARTED] facility two [STARTED] facility three [FAILED] I searched with find . -print0 | xargs -0 grep ...
1
vote
2answers
441 views

Webcam problems on Centos 6.6

I've been unable to get a few different webcams working on CentOS 6.6. (Logitech C270 & Creative Live! Cam Sync HD) I think it's related udev but unsure. The following are my /var/log/Xorg.0.log ...
1
vote
1answer
42 views

redirection - why it doesn't work this way

I know there are 3 streams attached to a process when it is run namely the input, output and error stream. And redirection execution work from left to right. I intend to execute a command, redirect ...
2
votes
2answers
5k views

How to access shared folder between CentOS 6 and WinXP under vmware player 4

Based on Sharing Files between CentOS 6 and Windows Systems with Samba I am able to follow until section of "Accessing Samba Shares". however, my system is WinXP and I don't see CentOS 6 icon at all. ...
2
votes
1answer
148 views

IPSet with IP6Tables ERROR

Can someone please solve my headache and tell me how to fix this? [root@www ~]# ip6tables -I INPUT -m set --match-set blacklist6 src -J DROP ip6tables v1.4.7: Couldn't load match ...
1
vote
1answer
31 views

Removing /tmp partition, what will happen?

We have a CentOS 6.6 server running, which is using a Raid0 on SSDs for the /tmp mount point (used for fast i/o). These SSDs need to be removed from the server, so the device where /tmp is pointing ...
0
votes
1answer
48 views

Can't write to an Intel 750 series PCIe SDD in CentOS 7

I am attempting to install an Intel 750 series 400 GB PCIe SSD card into a CentOS 7 system. The SSD shows up as /dev/nvme0 and /dev/nvme0n1 Attempting to format it with fdisk /dev/nvme0n1 results ...
3
votes
3answers
7k views

SSH public keys not working

I've spent a few hours trying to solve this, but have gotten nowhere. The server is running CentOS 6 and using OpenSSH. The client is running OpenSSH too. I created a public key on the client (my ...
0
votes
0answers
16 views

Postfix install fails. MySQL conflict

I'm using CentOS 6, and trying to create a virtual mirror on a new server of an old one (which someone else setup). As much as possible, I want keep everything with the same version, but I've started ...
0
votes
1answer
20 views

CentOS filesystem mount

I have set up a CentOS server and am administering it using Webmin. (I know webmin is generally frowned upon, but it is how I was taught to work on Linux and I only know basic ssh) The root drive ...
1
vote
1answer
46 views

How to resolve dependencies while installing application on linux (CentOS 7.1)

When I tried to install deluge on my CentOS 7.1 I was facing dependency problems due to some el6 which are not meant for CentOS 7.1. So, I found this page: ...
0
votes
1answer
17 views

why do i keep getting the same $SHELL even i am on a different shell already

[oracle@SJOAM ~]$ echo $SHELL /bin/bash [oracle@SJOAM ~]$ sh sh-4.1$ echo $SHELL /bin/bash sh-4.1$ csh [oracle@SJOAM ~]$ echo $SHELL /bin/bash Why am i always in bash !? but the prompt are already ...
0
votes
1answer
28 views

Accepted publickey for userx from y.y.y.y (ssh authentication)

Server A and B is setup for autoSSH I am on ServerA (y.y.y.y) and is accessing ServerB. I understand that A's public key is store in B and is use by B to encrypt the challenge to A when A connect. ...
17
votes
7answers
18k views

Are we supposed to manually delete the contents of /tmp?

I was under the impression that “old” files in /tmp will be regularly deleted. However, it seems to me that /tmp will just grow as long as it wants to, and nothing will be deleted. Some people say ...