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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Banned from SSH Centos server but can't find where [SOLVED]

For some reason my ip address is banned from using ssh or sftp. I have no problem connecting to the server using an other ip nor i have problems reaching all other services (like http, teamspeak) with ...
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0answers
12 views

How to Create and Restore a Snapshot of CentOS from one to another Server

I own a server at SoYouStart (OVH), I have installed CentOS 7. PHP, Apache, PostgreSQL, Varnish, etc ... I want to clone the same server with the same configurations and software to my new server on ...
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1answer
3k views

Authenticate users with Zimbra LDAP Server from other CentOS clients

I'am wondering that how can integrate my database,web,backup etc.. centos servers with Zimbra LDAP Server. Does it require more advanced configuration than standart ldap authentication ? My zimbra ...
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3answers
7k views

Change ownership of directory and all contents to a new user from root

I created a website under /var/www/html/ all under root, all images, files, .htacess, directories, etc... I uploaded and configured everything as root. I want to make it it's own username/password so ...
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1answer
29 views

Got blocked by server after starting TCP nodejs sever. Why?

I recently installed node on my VPS, and tried to complete a tutorial. I saved this code into server.js and hit node server.js in putty. I got instant "ban" from my VPS, I can't access it, however on ...
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1answer
18 views

EC2 volumes & partitioning

With Amazon EC2 CentOS 7 HVM community image machine just thinking for volumes & partitioning. Would it not be good that I create default 8GB volume sda for root device for all operating system ...
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1answer
1k views

Compiling PHP on CentOS Needs MySQL PDO Configured

I am trying to compile PHP with mysql_pdo on CentOS 6 and I am having just one heck of a time trying to make it happen. Currently I am trying to compile PHP 5.2, but I am going to have to do this for ...
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2answers
2k views

High CPU load on Centos with process sync_supers

My centos server has high cpu load right now. Please see the Htop output below. sync_supers is very suspected but I don't know how to kill it. Any suggestions?
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7 views

MS Data protection manager restore files from linux vhdx

We are backing up our few linux VM servers (Centos 6.6 with VSS , Online backup) in Hyper-V 2012 R2 with Microsoft Data Protection Manager 2012 R2. Its backing with Online method. In Windows VMs ...
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1answer
998 views

How to enable core files on CentOS 6

I am trying to enable core files on a machine running CentOS 6; however, nothing I have tried has produced core files…here is what I have done: Added the following two lines to ...
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1answer
28 views

Cannot find error in iptables firewall configuration

I'm struggling with a firewall problem on my Centos server. I have the following configuration which when I use it with a service iptables restart and I try to ssh to the server with putty, I cannot ...
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3answers
54 views

How to install packages offline?

Our server runs offline and we need to install lot of yum packages, like oracle-jdk, elasticsearch, nginx, etc. Is there any way to download the rpm dependencies so we can install them offline in ...
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10 views

How to set cups quotas per users on centos from active directory domain?

How can I import cups users from active directory domain which is installed on windows server 2008 R2 and set quotas per users on cups printing server which is installed on centos 6.6 ?
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1answer
17 views

Minimum System Requirements for MariaDB [duplicate]

I recently set up a CentOS 7 server on digitalocean, I went with the $20 a month plan because i found these minimum specs for MYSQL. When i did a LAMP install it had me install MariaDB instead. I'm ...
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0answers
21 views

Building a stack of SRPMs in build-dependency order

If I have a stack of SRPMs that I'd like to build, leading to a final product binary RPM. Many of the SRPMs require the built RPMs of other SRPMs to build. These requirements are expressed in the ...
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0answers
10 views

Scalix - Finding out when a mailbox received its last email

I have an old email-server that I want to shutdown. To do that I want to know when each mailbox on that email-server has received its last email. Sadly i don't know much about Scalix, just a few ...
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0answers
18 views

`aptitude` like conflict resolution on RHEL like systems? [on hold]

Is there any package manager for CentOS and such that, like aptitude, lets you navigate alternatives of add-proposals and remove-proposals? The machine is not mine so in principle a GUI program ...
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1answer
1k views

OpenDKIM - cannot determine host's domain name, so skipping default key generation

I've just set up OpenDKIM on my CentOS 6 server but keep getting the following warning each time I start the service: Cannot determine host's domain name, so skipping default key generation. I have ...
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0answers
13 views

Using /etc/fstab to add a mount as a user (VirtualBox, centos) [migrated]

I'm mounting my mac folder as a share in virtualBox CentOS6 machine with the following command: mount -t vboxsf git /mnt/git/ -o uid=500,gid=500 It works perfectly but I can't figure out how to ...
4
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2answers
9k views

Stop DoS attacks with an IP tables rule?

I was wondering if I could prevent small (D)DoS attacks with a simple IP tables rule? By small I mean that they are flooding my web server with about 400+ requests from one or two IP addresses. I ...
1
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1answer
151 views

(nginx) Apache Forbidden error (at random): No error logs

I am running an Nginx server, but as of late I am randomly getting "Forbidden" errors by Apache, and it seems to never happen at "first" visit, only after refreshing/browsing for a while. What is ...
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0answers
4 views

Sever unstable ? Fatal error: Exception thrown without a stack frame in Unknown

Good day, We have a new server running It's a dedicated clean install of: centos 6.6 with plesk 12 installation Running a intel i7 with 64 gb of ram Only 1 magento installation running with ...
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5answers
4k views

OpenVPN client connects but can't access internet

I setup an Openvpn server on a centos box and I can get the client to connect (osx) but can't access the internet or even the local network. I thought maybe DNS but couldn't access any sites via IP. ...
4
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1answer
1k views

God Process Monitoring - CentOS - Event System Not Found

I have god installed on at least a dozen (or more) servers running CentOS 5.5 in both i386 and x86_64 flavors that work perfectly. I just setup two new CentOS 5.5 x86_64 servers and installed God, but ...
1
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1answer
23 views

ERROR The requested URL could not be retrieved - when accessing URL by using PROXY

I'm getting this error message: ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://xxx Read Timeout The system ...
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1answer
941 views

partprobe will not work..i have tried everything

I am days before the RHCSA exam and i have noticed i still haven't been able to successfully run partprobe successfully after months on testing and testing and testing..not a single time I have tried ...
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1answer
56 views

CentOS 6.6, Limits of user-specific environment

So I'll add context, but my BLUF is this: In an organization that actively prefers "old, known, stable" (CentOS 6.6, highly curated Repo, etc...) to "modern, efficient, effective", but allows me ...
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1answer
22 views

Security risk in using one user for all shared hosting clients?

I have currently setup my CentOS 6.6 VPS for clients who host websites on my server. They have FTP access using a virtual user (with vsftpd as the real user) that is chrooted to their www folder. ...
6
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2answers
125 views
+50

cron job occasionally not running

I have a CentOS 6.6 server with the following packages installed: crontabs-1.10-33.el6.noarch cronie-1.4.4-12.el6.x86_64 cronie-anacron-1.4.4-12.el6.x86_64 kernel-2.6.32-504.3.3.el6.x86_64 ...
1
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1answer
29 views

Unable to use builtin CA bundle to verify GoDaddy SHA2 SSL certificate

I ran into an interesting problem. We have a PHP script that contacts a LTL shipper (https://facts.dohrn.com/). That script has been failing because it can't validate the SSL certificate. I went to ...
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5answers
38k views

How do I change timezone in centos 6.2?

Here is the output of my date command: [root@r1304 ~]# date Wed Apr 18 15:43:28 GST 2012 I want to change the default system timezone to Asia/Dubai. I've followed a tutorial and did this: ln -sf ...
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1answer
55 views

SSL broken encryption in Firefox

I have an SSL wildcard certificate installed on a number of servers, in Firefox the padlock is broken citing a issue with encryption. Broken Encryption (TLS_RSA_WITH_RC4_128_SHA, 128 bit keys, TLS ...
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2answers
3k views

CentOS 7 is not setting my gateway from DHCP

I have a Minimal Install of CentOS 7. I have disabled the Network Manager as I want to setup my network the "old school" way. systemctl stop NetworkManager systemctl disable NetworkManager ...
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2answers
495 views

How do you relay HTTP Port 80 Connections to Tomcat Port 8080?

I am working with a CentOS VPS and would like to achieve this without running tomcat as root.
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1answer
25 views

Change the logs directory for CentOS

The default directory in which the OS writes its logs is '/var/log/', I want to change that directory to another one that I create. How can I do that? Note: I tried changing the paths (/var/log/.) ...
3
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1answer
26 views

Understanding CPU% on Apache Extended Server Status

I just migrated an existing fairly high traffic website to a Digital Ocean droplet and I viewed the Apache extended server status page. It shows the information below. One thing I noticed is that ...
10
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2answers
18k views

Where route to 169.254.0.0 comes from?

Running CentOS 5.4 Why do I have route to 169.254.0.0 although it does not appear in Network > Ethernet Device > Route configuration dialog? Destination Gateway Genmask Flags ...
1
vote
1answer
886 views

iscsi TGTD gets continuous tgtd: conn_close(100) connection closed, 0x10b9288 1

I have a NAS server running tgtd on Centos 6. In my /var/log/messages, I an getting a constant entry every 3 seconds: Sep 26 22:21:24 san2 tgtd: conn_close(100) connection closed, 0x1143728 1 Sep ...
1
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1answer
23 views

Apache Module blocking access to FTP [on hold]

EDIT: previous server admin changed all sites to use Apache Module. Now the sites only run on apache:apache Problem is, now the client can't access their files in Filezilla, since originally the user ...
3
votes
3answers
261 views

How can I create one large partiton over two drives in CentOS?

I've got a new dedicated server that I want to use purely for backup purposes. [root@dedi ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 20G 942M 18G 6% / tmpfs ...
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1answer
30 views

Does this partition setup look OK for Centos 6.x and Plesk panel?

I have a new server with 2x3TB HDD, I want to setup software raid 1; When I use host's automatic install it makes my largest partition 2TB and the other 1TB a separate partition (not nice). So I am ...
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4answers
1k views

Server not reachable on all TCP ports from all locations

I have a very strange situation on a Linux (CentOS) server. Firstly, from my Ubuntu desktop PC, I can successfully connect to all services that are running on it, on ports 22, 80, 8080 and others. ...
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0answers
21 views

*** glibc detected *** /usr/sbin/httpd: free(): invalid pointer: 0x068977f0 ***

Completely fresh install of CentOS and I've installed PHP, MySQL and Apache with all modules, when I first tried to run the service the following message is in the error_log followed by a memory map. ...
0
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1answer
21 views

CentOS Multi Nic and Policy Routing?

I'm not familiar with CentOS and I need help doing the routing for this. I have a CentOS box with 3 NICs. eth0 Link encap:Ethernet inet addr:10.50.121.16 Bcast:10.50.121.255 ...
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1answer
32 views

dual-homed Centos 7 cannot be ping'd or ssh'd from some on LAN, sees ssh connection refused on one subnet

I have 2 subnets, A and B and a router connected to both A and B and the WAN. I have 4 servers dual homed on subnets A and B, 2 of them are Mac OS and 2 of them are Centos 7 (1503). They are all ...
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1answer
33 views

How to install phpmyadmin in centOS

I use a vps and it has centOS 6.5 . I installed Nginx and php and mySql clearly. But when I tried to install phpMyAdmin by these steps , in Step Three when I enter this code: sudo yum install ...
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1answer
129 views

Sync Ubuntu repository with Cobbler server fails

I am trying to sync the Ubuntu trusty repo to my cobbler server. The issue is that for some reason the connection seems unstable during the parts that work.. additionally it fails to proceed with one ...
2
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1answer
204 views

Analyse of logwatch and aide file

We have both logwatch and aide file. We would like to know how to know if there any intrusion have had taken place as this server was not active for some time. We quite a number of this entries in the ...
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0answers
19 views

Cron Jobs on CentOS with CentOS WebPanel [on hold]

I am looking to setup some cron jobs for a PHP app running on the server. I would like to know if it is possible to setup the cron jobs directly on the CWP.admin or, if not, what are my other ...
0
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0answers
12 views

working webserver failing after install ispconfig [on hold]

I had a working webserver on 200.124.128.148 with webmail (squirrelmail) and phpmyadmin, and a wordpress installaion. Now i tried installing ISPConfig and the mainpage goes to apache testsite, and so ...