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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OpenSSL's version on centos 7.2

I am using centos 7.2, the version that comes with centos 7.2 is 1.0.1 , I intalled 1.0.2 form source, then view the version,but it's still 1.0.1 . What should I do if I want to use 1.0.2? ...
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0answers
11 views

DSR on a DNS Cache Server… How

I have a doubt/problem. I have to set a DNS Cache Server that is behind a LB F5, i was asked to set 2 types of IPs, 1 IP is on 10.xx.xx.xx and its used to listen and reply all the cache store queries, ...
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1answer
16 views

httpd service refuse to start after packstack installation

Centos 7 Openstack single machine setup After packstack installation I did reboot my computer and after it turned on, httpd service failed to start httpd.service - The Apache HTTP Server Loaded: ...
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1answer
12 views

id command is not showing secondary groups

During some days I've been working on a LDAP integration. Now, after configure almost everything that I needed, I came up with this last wall: The need of use secondary groups which are taken from the ...
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0answers
12 views

Limiting the amount of httpd processes for a single Virtual host?

I have the following issue. I have a CentOS based VPS that hosts two virtual hosts, one serves the customer - the other maintains an API that the first one relies on. Now, here comes my problem. If ...
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0answers
8 views

CentOS 6.7 w/ cPanel - redirects to cgi-sys/defaultwebpage.cgi [on hold]

I have a dedicated server. Runs CentOS 6.7 with cPanel latest version. Whenever I try to access the domain via its IP, as I currently have not assigned it a domain name, I get redirected to ...
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0answers
13 views

CentOS network bridging and Xen

I'm using CentOS 6 and Xen 4.6 on a bare metal machine. I'm trying to install ubuntu as a guest but I fail in the networking section. (I use netboot image). I have two eths named eth0 and eth1. ...
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0answers
14 views

Failing to connect Azure CentOS VM via Sentora FTP

I created CentOS 6.5 and I installed Sentora 1.0.3 on Azure VM Service. But i couldn't make a connection with Sentora FTP account. I'm trying to connect Sentora ftp account with FileZilla. I get ...
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0answers
21 views

Fail2ban 0.9.3 not working on centos7.2

I'm really struggling with this. The default [sshd] jail works fine. Status for the jail: sshd |- Filter | |- Currently failed: 0 | |- Total failed: 0 | `- File list: /var/log/secure `- Actions ...
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0answers
12 views

cgroup same process with different resources

I have a Jboss application server installed through source and running multiple instances(say 3) of JBoss as a same user in a single machine on different ports. Using cgroups, I'm trying to do ...
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0answers
2 views

PuTTy can't establish SSH tunnel [migrated]

I'm trying to set up remote debugging for PHP using Xdebug and PhpStorm. My local development machine has Windows 7 and the remote machine has CentOS 6. I'm following this guide to no avail: ...
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2answers
21 views

How have phpMyAdmin (with a Alias) with a virtual host subdomain of a different documentRoot

To increase security in my server I created an subdomain only for admin, like admin.domain.tld and usually i access phpmyadmin by going only at admin.domain.tld/mysqladmin as in config file: ...
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1answer
23 views

ntlmssp_handle_neg_flags: Got challenge flags[0x60898205] - possible downgrade detected! missing_flags[0x00000010] - NT code 0x80090302

I'm trying to access SMB/CIFS resource on NetApp, using following and getting error: $ cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) $ rpm -qa | grep ^samba- ...
1
vote
2answers
62 views

Why does Debian have RPM and Yum packages?

I know that Debian comes with an awesome package manager called APT which is capable of installing .deb packages. I know that RHEL comes with a package manager called Yum and is capable of installing ...
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0answers
15 views

Fail2ban error 'database is locked' when trying to start / restart it

I am currently reinstalling fail2ban to have a fresh version, because i've modified it quite a lot of time since I installed it for the first time, and I wanted to default settings for it. Once ...
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votes
1answer
25 views

Provision a virtual server within CentOS 7? [on hold]

This may be a really silly question, but I currently have a dedicated server and I have an incredible amount of redundant hardware. I'd like to be able to provision virtual servers running various ...
0
votes
1answer
27 views

Unable to start cron service [duplicate]

Few days ago I added a cronjob using crontab -e which should run every 6 hours, however I noticed that cron job is not working. When I execute my script manually it works, and it should write some ...
0
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1answer
30 views

godaddy vps dns setting

I have goDaddy Domain with this dns record a @ 107.150.xx.xx 600 seconds Edit cname email email.secureserver.net 1 Hour Edit cname ftp @ 1 Hour Edit cname www @ 1 ...
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0answers
21 views

Blank LVM partition after recovery. Where is the data?

colleagues! A few days ago, the logical volume has been removed from one machine. Today, it turned out that there were still important data. No problems, everyone knows vgcfgrestore. Found in the ...
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votes
1answer
38 views

trouble deploying django under apache on centos with mod_wsgi

EDIT 2: I got this running mostly! It was indeed a SELinux issue. So most things work, I get a cannot write to a read only database error. And some of my things that seem like static are not ...
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0answers
16 views

Pros and cons of having one IP Address for many websites [on hold]

In last 2 years, I start having a lot of clients. Around 10 active clients at the moment. Knowing that, I work for myself, I decided to save the cost of renting the server by putting all the web of my ...
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1answer
41 views

How can I connect a group of vms in Azure?

I have a number of Azure Linux VMs. I am able to ssh into all of them using the public azure connection info, however I am not able to ssh from one vm into another vm using the private info. I have ...
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0answers
11 views

cp: cannot stat `*.so': No such file or directory (compiling crypto++) - Centos 6

I try to install crypto++ on Centos 6.7 but terminal return this error [root@emule2 ~]# make install mkdir -p /usr/include/cryptopp /usr/lib /usr/bin cp *.h /usr/include/cryptopp cp *.a /usr/lib cp ...
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0answers
9 views

configure: error:UPnP code has been disabled, Could not find crypto++ header file

I use Centos 6 (6.7)I want correct this command (is wrong) [root@ultimi aMule-2.3.1]# ./configure --prefix=/usr --with-denoise-level=4 --enable-optimize --disable-debug --enable-cas --enable-wxcas ...
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0answers
26 views

High server load after kernel update [on hold]

Today I updated the kernel but once rebooted the server, the cpu usage increased to +30 (it was 3 or 4 at most before reboot) I'm running Centos 6.6 64bit Any solution? Update: The current kernel ...
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0answers
15 views

Updating autoreconf to latest version

I have build autoconf from source but autoreconf still show old version wget http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz gunzip autoconf-2.69.tar.gz tar xvf autoconf-2.69.tar ./configure ...
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0answers
28 views

Postfix: status=deferred (delivery temporarily suspended: lost connection while receiving the initial server greeting)

Good day all, I have installed postfix 2.6 on my centos and trying to sent emails through a smarthost, to which I can telnet on smtp port, and failing with subject error. My main.cf is as follows: ...
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0answers
37 views

Why and How to set Public IP on Loopback Interface

I been using this forums for many years and this is the first time im in need to open a question, i search across the internet but i could not get an specific and clear answer, probaly because i dont ...
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2answers
26 views

Postfix Catchall - Avoid Spam

I've 2 accounts on my CentOS server configured with catchall email accounts. Lately I've been receiving bounced emails with virus that were supposedly sent from my server account, Ex: ...
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1answer
25 views

CentOS 7 Virsh - Allow Non Sudo Users to Interface with QEMU / KVM / Virtual Machines

Is there a way to allow non sudo users access to KVM QEMU virtual machines in CentOS 7? I want to allow a non-root user to manage KVM guest virtual machines without having sudo access. Mainly, I'd ...
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0answers
30 views

Redhat 6.8 - Where to install php-mssql

I tried following tons resources online to install php-mssql on Redhat 6.8 by using the Extra Packages for Enterprise Linux (EPEL) repo and it says that "No package php-mssql available". I made sure ...
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2answers
42 views

Synchronize RPM repository atomically

We have a RPM repository (on a Centos 6 machine) that we need to push to another machine. So far we've been using rsync -av --delete to simply push the repo directory over the network. This makes the ...
0
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1answer
27 views

Apache Tomcat requires an abnormal amount of time to start in CentOS 7

I am experiencing a weird issue on a CentOS 7 virtual machine and I can't see what is causing it. I created the VM on Digital Ocean and set it up as follows: 1) modified /etc/hostname with ...
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0answers
10 views

centos 7 /etc/lvm/archive flooded

not sure how to track down this but /etc/lvm/archive is seeing multiple entries created per minute. there is no cron job set up to do such archiving. also other similar servers do not have this issue ...
6
votes
1answer
78 views

Trying to setup mail server, can't get ports (25, 587) to work

I've searched everywhere and I'm really struggling with this one. I think I've tried just about everything. Background info VPS with CentOS 6.7 Postfix 2.6.6 dovecot, amavis, mysql, fail2ban I've ...
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1answer
31 views

LVM file locking error after moving extents to new physical volume

On a CentOS 6.7 system, I started getting SMART errors on a disk that was part of a volume group under LVM. So I used the recommended procedure: add a new disk to the system, create a new physical ...
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22 views

We are constantly getting CPU Spikes and site slows down [duplicate]

Our website works fine and fast, then out of nowhere cpu spikes to 100% site becomes really slow and after 10 minutes it is back to normal, this is constantly happening. How would one diagnose this? ...
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0answers
21 views

Building CentOS kernel from RPM with patches (but missing files that are in the SRPMs)

I have a hardware system that I am running CentOS 7 on. I would like to add some patches to the default CentOS kernel, since I have some custom hardware to support, but I also want to track the ...
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1answer
20 views

Build rpm on CentOS for RHEL

I need to install some software which is not available pre-compiled on a client's RHEL Server. I decided to create a rpm for easier installation on multiple systems. As i have no RHEL subscription, ...
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0answers
35 views

Server peak in CPU usage every few minutes and massive “Write” happening [closed]

As of approximately 5 hours ago suddenly our website became really slow; we have some idea as to why this is happening (mysql queries) however even with fixing those queries the site is fine and ...
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votes
1answer
32 views

DigitalOcean Droplet becomes completely unresponsive with basic setup [closed]

I have a Wordpress website running on a 2GB / 2 CPU DO Droplet, running CentOS and LAMP. I've set it up how I would any other server, however after a few hours the server becomes so unresponsive ...
0
votes
1answer
55 views

CentOS 6 - libc.so.6(GLIBC_2.14)(64bit) is needed by

I running a web-server with CentOS6 for 5 years without problems and it suddenly started throwing errors on yum update. This is the output of yum update: libc.so.6(GLIBC_2.14)(64bit) is needed by ...
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0answers
15 views

CentOS passwd file error

A co-worker tried to change the home directory of our root user and should have entered: root:x:0:0:root:/var/www/vhosts:/bin/bash ... but instead, entered: root:x:0:0:root:/root:/var/www/vhosts ...
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5answers
50 views

How do I increase a partition size (that doesn't use LVM) without removing and re-adding it

I have /usr on a separate partition. At the moment, this is how the server is set up: [root@localhost ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 4.9G 329M 4.6G 7% ...
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1answer
27 views

How to import large mysql database (innodb , myisam tables) to MySQL NDB cluster

Mysqlcluster used:- GA 7.4, Centos 7 I have 30GB each physical memory in 2 datanodes and SSD 200GB each but the database size(cumulative size of multiple db's belonging to free radius ) is around ...
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votes
1answer
64 views

Dedicated server with ssd best practice [closed]

I am getting new dedicated server with 240gb ssd drive and 2 x 3tb hdd. I am thinking to put OS on ssd, and then mount uploads dir in my HOME/USER/ directory to HDD. Or maybe vice versa? What is ...
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votes
2answers
34 views

How to free some memory in Centos 7 with only VestaCP installed [on hold]

I recently bought a server. I have Centos 7 64-bit on it, with VestaCP installed (with one wordpress blog added).. Only these things are installed, nothing else as per my understanding. However, my ...
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0answers
12 views

CENTOS: Openfire is running but cannot connect to Administration Console

I was trying to get into the Openfire Administrator Console but I didn't know the password.(the guy that set it up left the company and didn't tell anyone what the password was) I got onto the CentOS ...
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0answers
35 views

Haproxy and nginx rtmp

i am trying to use haproxy in front of rtmp nginx server it does connect but it does not play the video i have 2 servers 1 server is where rtmp nginx installed and second server where haproxy ...
2
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0answers
92 views

How to verify network quality before running important benchmarks?

I have multiple CentOS servers around the world. They all are running a PHP script that tests the latency of some services once per minute. The problem is that sometimes these servers have local ...