CentOS is an Enterprise-class Linux Distribution derived from Redhat Enterprise Linux sources freely provided to the public.

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CentOS 7: write failed: broken pipe when trying to reboot

Commands I've tried: sudo reboot sudo systemctl reboot Both commands just ask for my password for sudo then write: Write failed: Broken pipe Then they close the SSH connection and I can ...
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18 views

installing r8168 driver in centos 4.8

I have installed cent os 4.8 and I am not able to connect to internet from that system. After searching on the net I found that the system has r8169 driver instead of r8168. Now I am trying to ...
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23 views

SELinux context on CentOS 7

I installed CentOS 7 on my server and tried to deploy phpBB. I realized that SELinux was on when the directories were 'Unwritable'. I setenforce to 0 and completed the installation. However I'd like ...
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41 views

How to Install Oracle iPlanet Web Server on CentOS 7?

System: CentOS 7.1 64bit Programe: Oracle iPlanet Web Server 7.0.15 64bit for Linux The java related components have been installed when I use the command 'yum install java'. Such as ...
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28 views

Bro-IDS CSV conversion

I have Bro-IDS currently operating under Centos 7. I need to convert the output to CSV format. The documentation that I have seen on this is not clear to me. Has anyone done this successfully? I have ...
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28 views

Error loading libQtDBus.so.4 while installing skype 4.3 in CentOS 7 64Bit

I have tried to install Skype 4.3 in CentOS 7 64Bit. But its giving library error like Requires libQtDBus.so.4. Please Suggest me how can I get rid of this problem?
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19 views

check media resolution if resolution is big ffmpeg it, if output is smaller than original delete the original else delete the output

I have my storage VPS filled with videos, and hoping I can free up some space, their resolution is pretty big so I decided to re encode them with ffmpeg to a smaller resolution, I am doing every thing ...
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160 views

CentOS 7: Can't connect wifi using wpa_supplicant

I recently got a new wireless card, specifically Intel Dual Band Wireless-AC 7260 WiFi Bluetooth Half Mini Card. Previously I had been connecting with ethernet so this machine has never been on the ...
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30 views

How to benchmark performance and ensure high-availability in a CentOS 7 cluster?

To give you a little context on my question, I'd like to mention that I am writing an essay on high performance and high availability clusters using a 2-node (I know that is not optimal, but it's what ...
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54 views

haproxy removing mod_expires set by apache

I've haproxy server which is routing requests to different web service instance based on rules. The web service instances have apache running at port 80. Now, I'm trying to set some expiry header by ...
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28 views

seeking hints for correct escaping of sed commands WITHIN yaml

I am having a hard time finding the issue why following lines of "code" break my cloud-init config. Basically I am calling a son object as part of the DigitalOcean API which has a yam format - I got ...
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31 views

Centos 6-7 install argument for GUID Partition Table

From here http://www.tecmint.com/centos-7-installation/ item 11 NOTE:For those users, who have hard-disks more than 2TB in size, the installer automatically will convert partition table to GPT, ...
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98 views

PHP 5.4 ON CENTOS 7 , NGINX , page not found error

I am trying to install PHP 5.4 on CentOS 7 currently , my conf files look like the following : /etc/nginx/conf.d server { listen 80; server_name 178.62.255.79; root ...
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73 views

How to fix: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found

I need to install doctotext hence in the base directory, I run doctotext.sh and I got the following error (./doctotext: /usr/lib64/libstdc++.so.6: version 'GLIBCXX_3.4.15' not found). When I did ...
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353 views

mount exFAT HDD on CentOS 7

I'm running CentOS 7 on my server. I can't yum install fuse-exfat exfat-utils so I installed exfat-utils 1.0.1-1.el7.nux and fuse-exfat 1.0.1-1.el7.nux via RPM. I have a WD Green hard disk, which is ...
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55 views

How to install rpm

I have CentOS-6 and rpm and yum installed on it. The problem is that I had make utility on my system, but somehow it got uninstalled. Now, i want to install make with 'yum install', then I get ...
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27 views

Moving Informatica data(directories) from one unix server to another unix server

Can we migrate directories from one unix server to another unix server, without the need of installation of Informatica softwares on the new unix server? If yes, then will there be any change in the ...
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119 views

CentOS 7 /var/log/messages

We have a CentOS 7 (3.10.0-229.1.2.el7.x86_64) server running as our main file share server. We randomly see the following error messages showing up in our /var/log/messages and have been trying to ...
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34 views

Cannot mount LVM partition after restoring LVM metadata

I have resized two LVM partition (/var and /home) and somehow resize process went wrong. After reboot system wasn't able to mount /var and /home. I have used RIPLinux to check if I can mount those ...
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26 views

How do I show that a Desktop environment is NOT installed?

I need to document that a server is running a minimal installation of CentOS. I'm aware that I can echo $DESKTOP_SESSION (returns blank), but is there a better way of showing that the OS is minimal ...
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65 views

Dovecot ACL config for read-only user mail folders (CentOS 6)

I'm using Dovecot as an IMAP server. It's the latest version from source installed to /opt. Dovecot -n output: # 2.2.16: /opt/dovecot/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-504.12.2.el6.x86_64 ...
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24 views

Rsyslog logs retransmitted after log rotation

I have config setup on all my CentOS servers to forward all syslog messages to a Graylog server via rsyslog. In Graylog I have then configured streams to alert on the occurrence of certain message ...
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88 views

CentOS limits.conf & cpulimit not working

I have a CentOS server I am testing things out on. In it, I have configured USERNAME hard maxlogins 4 USERNAME hard cpu 1 USERNAME hard nproc 10 in ...
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99 views

Why does PostgreSQL 9.4 on CentOS7 not run via the `systemd` service file on boot?

As root, if I change to the postgres user with su -l postgres then run /usr/pgsql-9.4/bin/pg_ctl start -D ${PGDATA} -s -w -t 300, PostgreSQL starts successfully. As root, if I run systemctl start ...
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38 views

Repackage RPM with kernel

I am tinkering with CentOS 5.4 and upgrading the kernel to the latest 2.6.18 build 402. What I need to do is to rebuild the initrd to include a modified init script, then repackage it all into an RPM ...
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20 views

Trigger a graphic window during kickstart

I have built some custom centOS instalaltion CD with the help of anaconda and kickstart, nothing really exciting here, everything is working fine, packet are installed, pre and post installation ...
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12 views

How can I maximise Netbeans window from the terminal?

I am on CentOS 6 and using VNCViewer to remote in to a box which has four monitors. The problem is VNCViewer won't allow me to click on the Netbeans Window "Maximise" square, top-right, so I can ...
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202 views

Installing owncloud8 on CentOS 6

I'm trying to install owncloud 8 on CentOS 6 - the problem is that the default CentOS repos have only php 5.3 - but owncloud 8 requires php 5.4. So following this guy: How to install Owncloud on ...
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31 views

Control TCP Connections in Python

For my college project I am trying to develop a python based traffic generator.I have created 2 CentOS machines on vmware and I am using 1 as my client and 1 as my server machine. I have used IP ...
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12 views

How to set up Qmail to accept joining email list via Mailman LISTNAME-join@DOMAIN?

My configuration: CentOS 5.8, Plesk 11.0.9. I am trying to make my mailing list accept another way of joining a list. That is to join the Mailman mailing list by sending email to ...
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90 views

CentOS: Connection reset by Peer error while running python script

For my college project I am building one traffic generation tool using python. I have developed my own linux server and client on Vmware. I am using urllib2 for traffic generation in python. The ...
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100 views

How can I let a application/user account only create and update a log file (no read permissions) in Linux

I'm attempting to setup a fairly restrictive Apache Tomcat installation on CentOS 6.6 and am stuck on file permissions for the log folder. The tomcat folder and all it's sub-directories are owned by ...
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85 views

Cannot retrieve repository metadata (repomd.xml) Centos 6.6

I'm trying to upgrade centos 6.6 with yum update I keep getting this error message Cannot retrieve repository metadata (repomd.xml) for repository: centos6 x86_64. Please verify its path and try ...
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170 views

Custom compiled Nginx with ngx_pagespeed in CentOS 7 wont start

Since PageSpeed must be compiled along with Nginx, and I don't like the way instructions are in the Google page, I decided to follow another great one. Anyway, I did everything there. And when I get ...
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35 views

openvpn enable to connect to the server

I have centOS 7 64 bits, When I try to connect with openvpn my client.conf I have this error: Mon Mar 16 09:11:26 2015 TLS_ERROR: BIO read tls_read_plaintext error: error:14090086:SSL ...
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36 views

How to resolve issue of misconfigured vnc server on centos 7

While configuring vncserver in centos 7,the < USER >field in the vnc file gave me quite a bit of thoughts.whether it was to be replaced with the login name for accessing the ssh or some other ...
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103 views

How to disable local delivery in exim Vesta CP panel

How to disable local delivery in exim VestaCP Panel, I'm getting “Unrouteable address” error message in mail log.
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43 views

putty does not allow me to input special chars

I am having trouble accessing a folder with a very long name with • in its name. seems like every time I try to input • the putty window is not parsing the character successfully. Any ideas?
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41 views

How can I disable FTP access/login for users

I want to temporarily disable the FTP Access of the FTP users I have tried following commands for user "aadmi" but still able to login sudo passwd -l aadmi which said Locking password for user ...
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213 views

Install Apache https 2.2 under Centos 7

I would like to install httpd 2.2 (httpd-2.2.15-39.el6.x86_64) under centos 7. The default repositories only have httpd 2.4 available. Does anyone know where there is a centos 7 repository that has ...
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36 views

quorum disk and heuristic checking in CentOS7 Cluster

In CentOS6,we use to configure qdisk for two nodes cluster to quorate. How about in CentOS 7? I can't find any clue to do the same for it. Help will be much appreciated. Thanks,
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134 views

Two Nodes CentOS 7 Cluster clvmd

I am trying to set up two nodes CentOS 7 cluster with clvmd. I added dlmd and clvmd as clone resources in cluster using pcs command. When both nodes are up, dlmd and clvmd can start properly. But ...
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212 views

Centos 7, Postgresql 9.4 Failed to Read Permission Data Directory in mounted Partition

I've a problem with start PostgreSQL 9.4 on Centos 7 Server. Because the partition /var/lib/pgsql/9.4/data/ (which contains PostgreSQL data is full) so I want to change to another partition. ...
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24 views

Zimbra - Can't open Zimbra Admin in Digital Ocean

I'm using Centos 7 and package $40 for this setup. The problem that I face it right now is I can't access my Zimbra admin. I already install it properly , especially for DNS setting in Digital Ocean ...
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108 views

Where can I find a yum repo with couchdb for CentOS 6.5?

I've been beating my head against the wall for a couple of days now. Most CouchDB installation directions say to use yum and install from the epel.repo. Unfortunately, for me I can't seem to find ...
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32 views

Hadoop cluster and wifi

I have a three node hadoop cluster with out internet. I have WiFi. Can I connect to wifi and hadoop cluster simultaneously?
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35 views

Help filtering logs - auditd

System: RHEL release 6.3 (santiago) Issue: Once I start the audit service I'm starting to get thousands of logs in /var/log/audit/audit.log Most of the logs received are of - sshd Log sample: ...
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18 views

CentOS install spanning 2 or more CDs

I have a custom CentOS install which used to fit on 1 CD. With recent additions, it takes up more space than can fit on 1 CD. Some of our customers have old systems that aren't DVD compatible so we ...
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66 views

rich rules in firewalld to log imap and smtp attempts

How can I set up rich rules in firewalld that will record what is happening when a remote Thunderbird client tries to connect via imap and smtp? I imagine that two rules might be required, one for ...
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RHEL 5 box constantly displaying NIC statistics on console screen, how can I disable this?

I have a RHEL 5 box that is constantly displaying nic statistics on the console screen when using the KVM. This makes it very hard to do any troubleshooting when the box goes down as these statistics ...