CentOS is a Linux distribution standing for "Community ENTerprise Operating System" and is a rebuild of "Red Hat Enterprise Linux" (RHEL). The "CentOS6" tag refers to versions 6.x of CentOS.

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How to start PV Xen Guest

I am new in Xen virtualization system and i am trying to learn everything about it so i can use it instead of Openvz In Openvz i can start and stop vps by running vzctl start <VID> vzctl ...
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3answers
4k views

Varnish won't start as service but works fine from command line?

We're trying to setup a varnish on a Cent OS 6.5 64 but can't get it working as a service. What could be the reason for the following error? [root@server]# service varnish start Starting Varnish ...
7
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1answer
115 views

LUKS Error During Boot

I only see this error on the console during the boot process of virtual machines we create. EDIT: 2/5/16 - I see it on some bare-metal installations, too. (It does proceed to boot completely.) I ...
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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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1answer
56 views

high mysql CPU usage more than %1500 on centos 6

I am running a high traffic websites on a Dedicated-Virtual 24GB RAM CentOS server hosted by the planet. Very often the server dies because of high CPU usage (%1500) When i check the running ...
2
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16 views

IBM's iSeries ODBC driver not sending any traffic when invoked via isql or otherwise, getting [08S01][unixODBC] and [ISQL]ERROR: Could not SQLConnect

Note: I've replaced IP addresses, database names, and server users with examples. That shouldn't affect anything. The Setup I've installed unixODBC (yum install unixODBC) and IBM's official ...
0
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1answer
21 views

Geotrust SSL certification issue

I have an issue with curl (Centos 6 env) does not recognize Geotrust intermediary certificate: * Trying 192.168.6.6... connected * Connected to composer.graymatter.co.uk (192.168.6.6) port 443 (#0) ...
1
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1answer
16 views

SSD fstrim on CentOS 6.x with software raid5

I have some CentOS 6.x servers. They have software raid1 and fstrim works well there. On one of the servers, I decided to do software raid5 and ext4. I can mount it with discard and there is no error ...
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0answers
9 views

Disable USB Drive Auto Mount in Gnome (Centos 6)

I would like to disable automounting of USB removable media on Centos 6 with Gnome. I have tried configuring HAL and setting the appropriate keys in gconftool-2 according to this procedure. Although ...
0
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0answers
16 views

CentOS: in which folder should I install Java JDK? [closed]

I need to install Java JDK on CentOS 6.7, from different instructions I can see that some install it to /opt/, some to /usr/share/ some to /usr/local/, and some to /etc/. Which folder would be the ...
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36 views

How to install ABAQUS software on Rocks cluster 6.2? [closed]

I created a new cluster with 3: one of them is frontend and two of them is compute. Note that I am new to Linux and Linux hpc clustering. I did all of the installing frontend and compute nodes, and ...
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0answers
15 views

How much minimum memory do we need for a cPanel with low viewed sites? [duplicate]

I have a new VPS with 50GB disk and 1GB RAM, CENTOS 6.7 x86_64 kvm – server WHM 54.0 (build 8). I have a few sites only, where the most visited site has around 3000 views per day (all other sites may ...
0
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2answers
1k views

Installing PHP extensions to the correct PHP version

We have two versions of PHP on our Linux CentOS6 machine, 5.3.3 and 5.6.7, and wanted to install PHP extensions, memcache and imagick, to 5.6.7. Logged in as root, using yum, we installed both of ...
0
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1answer
17 views

Check If I/O causing high load average

I wants to understand how to measure if I/O is causing load average high and how to calculate optimal and critical I/O value. Because sometime there is a load spike on my server but other ...
0
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1answer
16 views

Xen domain windows 2012 r2 - cant add usb

I have xen 4.4.3-9.el6 on CentOS: 6.7 (Final) Problem is I cant add usb devices to my windows 2012R2 domain; If I usexm usb-add demo_win2012_r2 host:0529:0620: I can see my device in windows but it ...
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0answers
13 views

mount -o loop hangs

mount -o loop /example/example.img /mnt hangs for hours in dmesg only: ext3_orphan_cleanup: deleting unreferenced inode 104502 /var/log/messages kernel: < inode 10 inode 10 inode 10 inode ...
3
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1answer
726 views

Excessive number of sleeping processes in CentOS - howto diagnose? [closed]

I have a a large number of sleeping processes, about 600, the majority of which are Apache processes. Should I kill all these sleeping processes, or will that make Apache fail completely? Why are ...
6
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2answers
2k views

How to pass input from one script into another using bash

I am writing a script where I am want to launch the mysql_secure_installation script and provide the appropriate answers at each prompt. I tried using echo like this: echo -e ...
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1answer
36 views

How can I close httpd open conncetion? [closed]

I have a lot of open connection of httpd and ram usage, how can i solve this?
0
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1answer
30 views

Is there any way to salvage data from a 'broken'? SSD on Linux?

Where to start... So I have three dedicated servers hosted overseas. All three are running CentOS 6.7, two are used for webservers while the third is used as only for MySQL databases connecting to ...
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0answers
17 views

Assign a large subnet of IPs to KVM Guest VM

I have KVM host node running a few VMs. I create them using SolusVM panel, however they don't have an option to add bulk IPs in one shot to a guest VM which is silly. I'd like to know how I can add a ...
1
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1answer
1k views

Enabling SOAP on CentOS 6.6 Server

I am trying to enable SOAP on my server. Soap is installed, but doesn't show up in php_info. PHP Version 5.4.39 System Info: Linux ip-xxx-xxx-xxx-xxx.secureserver.net 2.6.32-042stab106.4 #1 SMP Fri ...
0
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1answer
22 views

Installing development tools packages error Centos 6.6

I'm trying to install curl-devel package as a prior step to installation of git 2.x.x: yum install curl-devel But I get many errors like this one: Error: Package: gcc-c++-4.4.7-4.el6.x86_64 ...
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1answer
21 views

CentOS 6 ClamAV scan unexpected results

I am trying to scan whole server with below command using clamav. However I already installed Malware detector. The server scans for upto a minute or two and found some unexpected scanning results ...
0
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1answer
59 views

Heavy load (100% ni) and CPU load average is 42.61, 42.24, 42.23

Machine: 8 Core processor with Centos 6.7 top command result I am using node.js, PHP-FPM, NGINX, Redis, MongoDB. I have checked with stopping all services created my me and PHP-FPM, NGINX, Redis, ...
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0answers
17 views

unixODBC on CentOS 6.7 with PostgreSQL 9.3

I am attempting to connect to a PostgreSQL 9.3 database on a Debian machine, more specifically an Ubuntu 14.04 machine using unixODBC. I am able to connect via the psql command using the same user ...
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1answer
33 views

How to increase boot disk space?

While creating a compute engine in google cloud , I assigned persistent disk as 50 GB. However my local disk shows as 10 GB , which is almost full. Help me increase this disk space. guide me how ...
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0answers
25 views

How to safely move /tmp directory to a new directory with same name and dedicated mount point?

I have created a new /tmp.new directory with dedicated mount point. I want to use that one to replace /tmp without dedicated mount point. I would like to use the commands of mount --bind, mount --move ...
3
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1answer
4k views

Putty: Incoming Packet was garbled on decryption

I am unable to connect to my server on my local network (VM). I have multiple servers I am able to connect to. When I try to putty into the server, I get the message Incoming Packet was garbled on ...
0
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0answers
22 views

How to submit ABAQUS job on Rocks cluster?

I created ROCKS6 cluster and i installed ABAQUS on my cluster and it works well on frontend, but i can not submit job on my 2 other compute nodes. I just want to run ABAQUS on this cluster (frontend ...
3
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0answers
90 views

SSH - 1s hang at “Entering interactive session” (Not DNS; possibly SELinux related)

I'm having an issue on CentOS 6.7 where SSH logins are 1s more than any non-6.7 machines on this network (e.g. 7.2, 5.11). Running debugging on the client side showed the hang at "Entering interactive ...
2
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2answers
1k views

grubby fatal error: unable to find a suitable template

I'm trying to fix my system after moving it from one server to another. It works perfectly with kernel booted via network, but not from the disk. Reinstalling stock CentOS 6.6 kernel shows this ...
0
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1answer
24 views

OpenLDAP Filtering Users that are part of Groups of Groups

LDAP Configuration: MemberOf Overlay is enabled Users are part of an organizationalUnit called People. Each user is a "memberOf" a role. For example, a user in their role at a company is a ...
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3answers
1k views

How to get mod_proxy_fcgi on CentOS/Red Hat 6 with Apache 2.2?

I am trying to get Apache 2.2 + php-fpm to work on CentOS 6.5 (and Red Hat later). I want to use mod_proxy_fcgi to do this, but I can't find a proper way to get it. I tried looking for repository ...
1
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1answer
77 views

Logrotate running according to cron, but logs are not rotated

I run logrotate through cron with the script [alex@leia ~]$ cat /etc/cron.daily/logrotate #!/bin/sh /usr/sbin/logrotate /etc/logrotate.conf >/dev/null EXITVALUE=$? if [ $EXITVALUE != 0 ]; then ...
0
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0answers
115 views

Can't display files from a vsftpd server on centos 6

It's a Centos 6 running apache server and vsftpd server. Problem is not about connection, it's about displaying folder from local_root directory. Here is /etc/vsftpd/vsftpd.conf : # Example config ...
0
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2answers
2k views

Where do I specify the Bind DN and password for sss+ldap?

I'm trying sssd for LDAP authentication, and while it can show user IDs with the id command, getent group and getent passwd do not show LDAP names, and while I can chown files to ldap users, they ls ...
1
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1answer
26 views

how to protect high-numbered ports as if they were well-known

Basically, what I want is the opposite of this. I want to be able to bind a service to a high-numbered port with the peace of mind that comes with knowing the O/S is treating that port the same way it ...
2
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1answer
160 views

Channel all the traffic on an IP to a VM

Situation: I have a dedicated Server (CentOS 6) with couple of VMs(Cent OS 7 and Windows Server 2012 R2) in Virtual Box. Few applications are running in windows and reachable from the Main ...
0
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1answer
4 views

Trying to get property of non-object in advagg_font_admin_settings_form()

I enabled the module Advanced CSS/JS Aggregation (advagg) 7.x-2.17 on Drupal 7 and now in my admin page admin/config/development/performance/advagg/font I see a warning: Trying to get property of ...
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0answers
14 views

Maria db Optimization and performance

I have a dedicated server comes with 8 x 3.3GHz cores, 16GB memory DDR3, CENTOS 6.7 64 bits, Apache 2.2.9, PHP 5.6, im running a php applications that needs a lot of connections with maria db version ...
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0answers
13 views

PostFix/Dovecot new installation on Centos6

I have installed Postfix and Dovecot on my server. It seems to be mostly working - I can send mail from my account to a remote account no problem. My problem is receiving it. When I send an email ...
0
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1answer
2k views

How to disconnect pptp client?

How to disconnect pptp client connected to Cent OS 6.2 server from the server side ? ifdown ppp0 doesn't work.
0
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1answer
14 views

Pass ethernet interface to iptables rule in ansible playbook

I'm writing a pretty simple ansible playbook for setting up our iptables firewall in centos. Here is the playbook I wrote: --- - hosts: test remote_user: deploy sudo: True tasks: - name: Get ...
0
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1answer
27 views

installing ruby 1.9.3-p194 using rbenv on centos 6.7

I'm moving a Ruby/Rails app to a Centos 6.7 server (from Ubuntu) and am installing ruby via rbenv. I run rbenv install -v 1.9.3-p194 and it will start to compile but the build fails. The build ...
0
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1answer
38 views

SecRuleEngine Off not working on a single domain in virtual host

I have modSecurity installed and working on a server with multiple hosts and I want to disable some rules for one host only. This is what is what I put in the virtual host file: <IfModule ...
0
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1answer
50 views

SecChrootDir Jailing apache 2.2.X on Centos 6.7

I was trying to do apache jailing on centos 6.7 with modsec. I already built everything even the jail directory and remodeled the config files. httpd(apache) says it started nicely, however its dead. ...
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0answers
21 views

Centos6.7: sqlite3.10 in server, but always the php config detecte the 3.6.20

I want to upgrade sqlite3 in centos6.7 server from sqlite3.6.20 to 3.10. I succeed to install sqlite3.10 in server, but always the php config detecte the 3.6.20 version !? sqlite3 data.db SQLite ...
1
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1answer
39 views

Best route for setting up VLAN tagging on CentOS

Lately, I have been working to configure a centos65 server to enable VLAN tagging, this server is going to act as VM Host (kvm). On the network-switch level, the ports were configured to enable ...
0
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1answer
48 views

can't access my dedicated server via ssh Permission denied (publickey,gssapi-keyex,gssapi-with-mic)

I can't access my dedicated server via ssh this's the result of "ssh -v user@server-ip" command line: OpenSSH_6.9p1, LibreSSL 2.1.7 debug1: Reading configuration data /Users/mac/.ssh/config debug1: ...