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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WebApp won't compile in CentOS 7 server, but does compile in Windows

I am getting a "resource marked as read-only" error when I try to compile a war file on a CentOS 7 installation. But the same eclipse project does not throw any compilation error on Windows after I ...
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0answers
9 views

Library Dependency is different when checked via yum vs. rpm

I'm new here and am debugging something I've never seen before, so I'm hoping someone can show me where I'm going wrong. I've created a local yum repo for all my servers. The idea is to distribute ...
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1answer
18 views

CentOS Qemu+KVM lot of virtual machine processes

I am on host-machine with Centos 6.5, qemu+KVM and 2 virtual hosts in it (behind NAT). Both virtual hosts were configured with Virtual Machine Manager (one of them is with Windows 2003 and other with ...
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0answers
29 views

Update version of network manager

In shell on sever I see following error after launching several commands: Error: nmcli (1.0.0) and NetworkManager (0.9.9.1) versions don't match. Force execution using --nocheck, but the results are ...
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0answers
15 views

Sendmail on CentOS puts incoming mail to domain clients into hidden queue, if they contain attachments [on hold]

Sendmail on CentOS, after working fine for years, puts incoming mail to users into long quarantine or hidden queue, if they contain attachments. Rebooting Apache and Sendmail a few times sometimes ...
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4answers
33 views

Is it possible for a cronjob to start before MySQL starts?

I am on CentOS 7, and if I put: * * * * * python script.py It works. If I put: @reboot python script.py Then it says it cannot connect to MySQL. If I run it from command line too, it works. ...
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0answers
7 views

CentOS 7: Write failed: Broken pipe on reboot

So I am trying to reboot on CentOS 7: $ sudo reboot Write failed: Broken pipe After I run the command, it waits 60 seconds for the timeout that is specified both on the server and client side, as ...
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0answers
19 views

Incomplete Page Loads in Apache and PHP

A client frequently loads our site on his iPhone and has troubles with incomplete page loads. I also sometimes on my laptop load up the home page and there's issues with our rotator due to an ...
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3answers
51 views

How I can Block all China to entry to my server [on hold]

How I can Block China to entry to my server ? All China country ? By ipset and iptables I want by this to avoid DDOS attacks OS: CentOS 6.6 Thanks.
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0answers
19 views

Centos 7.1 doesn't start [on hold]

tonight OVH have made some security update to all his VPS. Anyway, my VPS is offline since then. Now are around 12 hours that my VPS is offline. My system use Centos 7.1. I can use kvm, and these are ...
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0answers
36 views

CentOS 7 httpd /server-status limitations

I have got VPS (using CentOS 7 as my OS) and now I am configuring Munin (monitoring software). I ran into a little problem with Apache monitoring. Now I have got this cfg in my httpd.conf and ...
2
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2answers
40 views

How to open port for a specific IP address with firewall-cmd on CentOS?

I would like to open port 4567 for the IP address 1.2.3.4 with the firewall-cmd command on a CentOS 7.1 server. How can I achieve this, as the documentation I could find was too specific on this?
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1answer
14 views

xinetd port forwarding causes HttpServletRequest.getRemoteAddr() to always return 127.0.0.1

We're attempting to identify where specific requests are coming from inside our Java application. We have changed the log files to include the IP address and we're using ...
0
votes
1answer
43 views

Postfix and dovecot can not receive mail

I setup a mail server (with multiple virtual hosts) on a VPS. I used postfix, dovecot, postfixadmin, squirrel and mysql. I can send mail by squirrel, but can not receive any mail. This is my ...
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0answers
29 views

Can't push git updates & run Unix commands when connecting via SSH [migrated]

I have installed java 8 on my bluehost VPS. I have followed http://tecadmin.net/install-java-8-on-centos-rhel-and-fedora/ instructions . In order to add directories to PATH variable I have added ...
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0answers
12 views

LXC containers - Duplicate tty on Gentoo guest

I'm trying to run Gentoo inside LXC container on Centos 7 host machine. I have prepared the guest OS on another (Gentoo) machine by following this tutorial https://wiki.gentoo.org/wiki/LXC. On this ...
1
vote
1answer
32 views

systemctl throwing errors on start/enable after package instal [duplicate]

In the effort to lock down a new Centos box I am building I am installing iptables. I would like to be able to put this in a script so I can do this to other boxes but I am getting some odd errors ...
0
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1answer
9 views

What is Slab, SReclaimable and SUnreclaim? What does Slab solve and how does it behave under load?

I have a server with 32 gigabytes of ram, with htop reporting 29 gigs used, with 4 gigs of swap in use as well. cat /proc/meminfo returns around 13 gigabytes of memory listed as SReclaiable. What ...
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0answers
11 views

Centos internet sharing with dual WAN and subnet routing

Situation is like this: eth0 has internet access with VPN for 2 subnets 192.168.2.x nad 192.168.30.x eth1 has internet access eth2 is the one to be the connection to allow internet connection ...
0
votes
1answer
18 views

Centos 7 Apache 2.4 php_fpm 30 second timeout

I need to set execution timeout for Centos 7 Apache 2.4 php_fpm, but there seems to be a hard coded timeout somewhere in the Apache proxy. I see max_execution_time correctly set (to 300) in ...
1
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2answers
23 views

Where is WSGI installed on Centos?

I am getting a permissions issue when running django in daemon mode. Reading here https://code.google.com/p/modwsgi/wiki/ConfigurationIssues#Location_Of_UNIX_Sockets I think the solution is to ...
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0answers
49 views

NameVirtualHost *:80 and 443 has no VirtualHosts on centos

Since I added IPs to my server, I have a lot of issues when starting apache. I always have these errors below: [warn] NameVirtualHost *:443 has no VirtualHosts [warn] NameVirtualHost *:80 has no ...
5
votes
1answer
342 views

Can I allow root to su any other user? [on hold]

I have this centos VPS with 5 accounts; then I enabled one user to ssh, disabled root login, and have shell disabled for every other user account.. Is to possible to permit root to su the other ones ...
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0answers
33 views

/sbin/lsmod outputs empty module list [closed]

I'm using the command /sbin/lsmod to check loaded kernel modules and drivers as described on centos.org The command output the following only: Module Size Used by No modules are ...
1
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1answer
34 views

How can I allow users to reset their Linux user passwords from a web interface? [closed]

I am running SAS Visual Analytics on a cluster for my department. I want the users to be able to set and reset their own password for their user account. Users and Passwords for the application are ...
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0answers
25 views

How to add a partition to CentOS without losing data on it

we had a CentOS 6.4 server with two RAIDs. One RAID-1 and the other RAID-5 RAID-1 had multiple partitions with OS installed on it. RAID-5 had two partitions with some data on it. In order to ...
5
votes
2answers
461 views

Which Linux package contains the 'top' command?

Many of the common utilities in Linux either come packaged in util-linux from Linux Foundation or coreutils from GNU. The man page for top doesn't specify anything. I am using CentOS.
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votes
2answers
63 views

CEPH's raw space usage

I can't understand ceph raw space usage. I have 14 HDD (14 OSD's) on 7 servers , 3TB each HDD ~ 42 TB raw space in total. ceph -s osdmap e4055: 14 osds: 14 up, 14 in pgmap v8073416: ...
1
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0answers
15 views

systemd Unit file for GitLab

I am currently writing a Puppet module to get GitLab running on CentOS 6/7. For the CentOS 7 install I need to write a systemd unit file to start the gitlab service (which is actually Unicorn & ...
4
votes
1answer
144 views

Apache shuts down unintentionally

I must say that I am not the guy that set up the server, but the poor sap tasked with finding out what is happening for the time being. I only have a rough knowledge about apache and linux, so ...
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0answers
40 views

How to check email delivery in server? [closed]

I currently have a server with CentOS that runs Cpanel from hostgator. I have another server to send email to using php scripts. This email reaches gmail server safely, but it doesn't reach my ...
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0answers
21 views

is it safe to disable pure-ftp in WHM? when not using it [closed]

Is it safe to disable FTP and only turn it back on as needed? I noticed cpanel does try to access ftp for some sort of check. just curious if disabling ftp until I need to use it would be safe? ...
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votes
1answer
40 views

Curious what server pam_pwdfile is in var/log/messages

I am getting tons of these messages in my /var/log/messages file Apr 16 06:58:20 server pam_pwdfile[7856]: couldn't open password file /etc/techproxy.shadow Apr 16 06:58:20 server pam_pwdfile[7863]: ...
0
votes
1answer
52 views

Website takes a long time to first byte [duplicate]

Recently, I migrated a joomla 2.5 site with K2 from a shared host to a dedicated web server with 1 GB of RAM and 8 CPU cores. My problem is now that the website loading is very slow, much slower than ...
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0answers
19 views

Remote packet capturing using fifo and dumpcap

I'm currently working on two linux servers where one server is running in 2.6.18-274.el5(Server A) and the second one in CentOS 7 (Server B). My requirement is to capture the packets of the network ...
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0answers
27 views

Dell r730 + Dell 12Gb SAS + Centos 7 + netvault 9.2 quantum superloader 3 not found

In the above configuration Netvault does not find the library attached to the sas controller. What driver should I see with lsmod for the SAS card? I have: ... mpt3sas 195379 0 ...
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2answers
19 views

CentOS 7 won't connect to external MySQL database. Database works from other servers

I have a new CentOS server set up, with Apache and php-fpm. The php application fails to connect to an external MySQL server. This server is reachable from other servers, the firewall on the database ...
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0answers
16 views

Rogue external service showing up in New Relic that I can't track down [on hold]

I am working on a CentOS 5.1 dedicated server that uses WHM/cPanel to host 75'ish sites. There is an external service, matvsub.wang, that is showing up in New Relic external services that has a ...
-1
votes
1answer
24 views

SFTP and SSH Logins [duplicate]

I've been doing my research and found some clues as to where I should be looking, but just can't quite get it perfect. I'm trying to create a new user, and allow them to have access to SFTP for file ...
13
votes
2answers
286 views

How to uninstall newly installed dependencies for a RPM package?

Is there an easy way to make a list of the dependencies a newly installed RPM package will install with yum? Example: If you do yum install ruby then it will also install some rubygems. But when I ...
-1
votes
0answers
29 views

CURL Error: 35 - error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure [closed]

I'm getting below error when connecting to quantumgateway.com CURL Error: 35 - error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure Using Apache 2.4. PS. The SSLV2 and SSLV3 ...
0
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0answers
39 views

is there a way to determine what process has written a file? linux [duplicate]

The answer marked as duplicate is not related to my question which is very specific. I need to know if there is a command or information stored on linux about how a particular file was written please. ...
0
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1answer
38 views

Server ran out of HD room

A rogue script brought my centOS-based server to its knees and resulted in 0 bytes of HD room left. I since fixed the issue and everything seems to be running normally. So my question is, what ...
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0answers
5 views

Converting Bro IDS output to CSV

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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votes
1answer
29 views

Cannot Access remote CentOS machine using VNC

I am trying to connect to a remote CentOs machine through VNC to get a graphical display. I have followed the steps mentioned in https://www.howtoforge.com/vnc-server-installation-centos-6.5 to ...
1
vote
1answer
26 views

MySQL PID Errors

While attempting to change the MySQL server timezone to CDT to match the Centos sytem time, something has messed up. I edited the my.conf in /etc/ in vim logged in to SSH as root, and saved it. On ...
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votes
0answers
6 views

Unreal IRCd: Password Mismatch error on client when using authentication setting in server config file [duplicate]

I'm trying to get my irc server to use password authentication. I'm running unreal 3.2.10.2 ircd compiled with openssl. With the following allow entries I can connect with mIRC using ssl without any ...
0
votes
2answers
97 views

100% CPU usage on my CentOS VPS

I have a 512 MB VPS and hosting 2 WordPress websites on this CentOS server. I have installed apache + mysql + PHP + fast cgi on this server. Everything was working great from last 6 months. I have 500 ...
-1
votes
0answers
6 views

Cannot retrieve metalink for repository: epel. Please verify its path and try again [duplicate]

I have referred the already discussed threads for this error. EPEL Repo for CentOS 6 causing error I tried all the solutions suggested there, but that didn't help me. Can someone please suggest any ...
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1answer
50 views

unable to update php version to 5.5 on centos

i want to update php version centos via ssh , i ran "yum update" command on server but it did not update php version, how can i do it . Please guide. My centos version is 6.6