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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install boost 1.51 package on centos 7

I'm trying to compile a program which requires boost 1.51, but the only available boost package via yum on my system is boost 1.53. I would prefer to install boost using the system's package manager, ...
3
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1answer
46 views

Dynamically Restrict What CPU's a new process runs

So, I've looked briefly at cgroups and numactl, but neither appears, based on the information i have found, to be quite what I need. We use a piece of software, "fast-X", For our users to login to ...
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13 views

Flanneld not picking up the right network settings

I am running Centos 7 with Kubernetes, Docker, etcd and flanneld. Currently I am seeing a problem with Flanneld which I can't seem to figure out. I have setup etcd and configured the network. ...
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1answer
28 views

Unable to set TCP_NODELAY with setsockopt on CentOS

The call to setsockopt seems to succeed, but checking with getsockopt shows that TCP_NODELAY has not been set properly. Below is the relevant section of my strace. Am I missing something? ...
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2answers
39 views

Nginx. Config two sites on the same port

I'm trying to add a wikimedia site on my server, which already has another site (which doesn't use PHP) on it. I want to put it on a different folder like www.hostname.com/wiki but it would be ...
2
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1answer
80 views

SELinux on CentOS not working

i'm new to CentOS and trying to enable SELinux and it's not working after a restart as described on ...
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1answer
44 views

Creating an SELINUX allow rule for sockets error with clamd

I've got a CentOS 7 box configured as a Squid proxy, with clamav and Squidclamav. Normally I would just disable SELINUX, but I am attempting to understand and setup allow rules properly. I've managed ...
2
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0answers
25 views

NGINX Worker Process, Burst Read Speed to only 1918kb/s

I am running an NGINX/1.8 server on Centos6.6 with multiple worker_processes, however while observing iotop I notice they burst up to 1918kb/s Read speed and rarely if at all pass that limit. I want ...
2
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1answer
84 views

Track Source IP of dropped packets

I've got a Linux server running CentOS 7, and I've been facing an issue where the RX dropped packet count keeps increasing. I believe it may be caused by a faulty cable/connector in the network; ...
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16 views

IPTABLES Forward a Input with specif dport to VPN and masquerade

Inside our company we have a XMPP server that works with source 10.0.0.0/8. But, What I want to do is redirect a package coming from WAN to the VPN (which is where our XMPP is located) but doing a ...
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1answer
23 views

Migrate Centos7 to new server

I have a Centos7 server running a setup of nginx/dovecot/ispconfig/roundcube/mariadb etc.. and a few other smaller things (as per ...
1
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1answer
57 views

Console Developer instance not working by ssh

I have two VM instances in google console developer. I can able to open by ssh for instance-1.At the same time i can't able to connect instance-2 through the browser. I got the following error. ...
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18 views

Not recognizing path to credentials on fstab

I'm trying to mount a remote filesystem with fstab, and using a credentials file to load the username and password, but for some reason I get this error message when I try to use # mount -a: mount ...
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1answer
31 views

Transfer existing email to new postfix/dovecot server via POP3

I have to build a new email server with dovecot/postfix on CentOS because an existing supplier is becoming too erratic with their billing. I can do that but I am worried for a small problem. If I ...
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0answers
32 views

kernel panic with “iommu=on” on Centos 6.6

I have problem with virtualization passthrough. I want to enable iommu=on in the grub.conf . but after reboot , kernel panic occur . I don't know how to solve this problem . Am I miss something at ...
2
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1answer
81 views

RAID1 drive not seen by CentOS 7 Installer on HP ProLiant DL360e Gen8

I need to install CentOS 7 on a HP ProLiant DL360e Gen8 server. The RAID1 has been configured in the bios: I have downloaded the driver from ...
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2answers
25 views

ubuntu network settings equivalent in centos 7

I have in a ubuntu server an interface setup as the following (in /etc/network/interfaces) address xxx.xxx.xxx.xxx netmask 255.255.255.255 broadcast xxx.xxx.xxx.xxx post-up route add xxx.xxx.xxx.xxx ...
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0answers
25 views

CentOS 7.x: Disable reboot/shutdown for non-root users

How can I disable shutdown and reboot from the console for normal (non-root) users in CentOS 7.x? Both commands are symlinks to "systemctl" in this distribution.
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1answer
34 views

Crontab command not executed

Coming from Why is my crontab not working, and how can I troubleshoot it? i still don`t know why my command is not executed. I got same command for root and www-data and my cron logs shows that ...
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2answers
21 views

Can't access server through web access despite allowing ports 80 & 443?

Here is the server's iptables file *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [13:2648] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A ...
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0answers
13 views

Extending storage on Centos Webserver via VPN on virtual interface

Basically, I have a centos6 server that I need to extend the storage on. Its a public facing webserver, however am I able to create a virtual interface, use that to VPN to a remote box and mount a NAS ...
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1answer
62 views

Ping response time suddenly rose up to average 1500ms or more

At normal situation the ping (8.8.8.8) response time is 50ms. But out of sudden it just peaked to 1500ms average or more and quite frequent recently. My server is CentOS 6.6 with eth0 (192.168.1.1) ...
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3answers
61 views

How to log all writes to php files with-in a specific directory?

Is there a way I can get my centos server to monitor my /home directory for any write requests to .php files and log the filename and timestamp of the write request? I have a feeling i have someone ...
2
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0answers
31 views

pppd terminated bya SIGTERM in Centos 7 — who's sending it?

Folks, I created a script to keep a persistent "emergency" connection with a 3G modem, so I can access my CentOS 7 makeshift server remotely if the usual network fails. Everything works for a few ...
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15 views

PHP extension wont load after installing MPM-ITK

I installed Phalcon on my dedicated server and everything was perfectly fine untill I installed MPM-ITK to host multiple sites with multiple users. After installing MPM-ITK phalcon is only loaded in ...
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2answers
55 views

CentOS - Apache HTTPS not reading htaccess

I have been stuck with an issue with rewrite on apache on CentOS. If I load my site from HTTP, it works fine. Rewrite rules work. Once I change it to HTTPS, the rewrite rules don't work. After some ...
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1answer
22 views

OpenManage returns “Hostname / IP address is Blank” when submitting valid hostname

Just installed OpenManage 8 on a CentOS 6.5 system. I access the login page with https://1.2.3.4/1311 and that loads up without a problem. I enter the system hostname (my.domain.tld), username and ...
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37 views

libgcc multilib version - unable to install any package with yum

System: Red Hat 6.5 I have a problem with libgcc, which is apparently installed in 2 different versions on my machine. Anyway, when I try to install literally anything, I am unable to do so, because ...
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1answer
59 views

Postfix on CentOS 6.6 is overwriting my return-path header?

I'm dealing with this problem on my CentOS 6.6 server: when I send a mail with PHP/phpBB (mail() function), Postfix overwrites the return path with apache@servername. The issue is also expained in ...
2
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0answers
40 views

difference between ifdown, ifconfig stop and ONBOOT=no

my ifcfg-eth1 config as below DEVICE=eth1 TYPE=Ethernet UUID=5e4f36f8-14eb-4f0c-8fa9-3af9be3899a7 ONBOOT=no NM_CONTROLLED=yes BOOTPROTO=dhcp DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no ...
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0answers
15 views

virtualmin subserver redirects to TLD with no rewrite rules

I am using centos 7, apache 2.4.6 and virtualmin/webmin installation on an azure vm and have been having trouble setting up subservers correctly, I have the toplevel domain www.tld.com hosted on my ...
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1answer
91 views

SSL handshake with CentOS, curl and ECDHE

Since I limited my Ciphers to ECDHE because of the Logjam vulnerabilities, I am not able to do a curl from a Centos machine anymore. (works from Ubuntu) $ curl -v https://mysite.mydomain.com * ...
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0answers
30 views

How can I find out my centos RAID setup, with a LSI MegaRAID SAS 2108 controller?

I've bought an auction box from Hetzner which allegedly has 4 3TB drives in it. As a relative newb to this sort of thing I just want to see some reassurances on the command line that this is all ...
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0answers
27 views

firewall on server preventing access by multiple computers on same NAT'ed ip

I am encountering a strange problem with my VPS provider and wondered if anyone here with firewall / sysadmin experience had seen anything like this. Has anyone seen a situation where a firewall or ...
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1answer
87 views

“Unable to open display ” “” error on VNC Server

I'm trying to run a GUI for my CentOS 6 server. I've installed VNC, and I have followed this guide through to the end - http://wiki.centos.org/HowTos/VNC-Server Once the VNC server is started, I try ...
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2answers
61 views

CentOS Server - Available disk space constantly drops

The result of the df command : Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda2 864000688 809338092 10773908 99% / tmpfs 32965940 0 32965940 0% ...
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1answer
52 views

CentOS kickstart - force kernel version

I'd like to kickstart some servers using a specific kernel version (slightly downrev) but can't figure out the correct syntax in the kickstart file. I've tried specifying this in the "%packages" ...
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2answers
60 views

SSH works but tunneling or SFTP doesn't. Why?

since 2014 I've got a server from SoYouStart, with Centos 7. It worked perfectly, but now I had to install again the OS. Now I'm configuring all the services to work again. I need to connect to the ...
0
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1answer
55 views

Using SSH Keys with Kerberos

So there's an issue that we've been having at our company causing me to pull my hair out for the past week: We have hundreds of server boxes (a mix of CentOS6/7, if it matters) that need to quickly ...
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0answers
20 views

logger not logging to remote rsyslogd instance

I am running CentOS 7.0.1406 with rsyslogd 7.4.7 and logger from util-linux 2.23.2. I have two machines connected via a switch. When I try to use logger to log from one machine to the other, nothing ...
2
votes
1answer
17 views

Find modified selinux booleans

I have a CentOS 6.6 server that was setup by someone else. I'll be recreating this server from scratch on a new box and I'm wondering if there is any way I can find out what selinux booleans have been ...
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votes
1answer
43 views

CentOS 6.6 and CWP - DNS

I installed the CentOS 6.6 and CWP on my second laptop, I think it is erroneous DNS information.. NS1: ns1.centos-webpanel.com | IP:185.4.149.83 [Change] NS2: ns2.centos-webpanel.com | ...
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0answers
100 views

Apache (CentOS): [warn] mod_fcgid: process 2661 graceful kill fail, sending SIGKILL

I am running a VPS with CentOS and Plesk. Today, when setting up a Magento shop suddenly the whole server had weird behaviour: All hosted websites delivered an Internal Server Error, SSH Connections ...
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1answer
50 views

Open Google Chrome on Centos 7 and screenshot it [closed]

I have Centos 7 server installed on AWS and I installed "google-chrome" on it using a sample code on the internet which works fine. cat << EOF > /etc/yum.repos.d/google-chrome.repo ...
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1answer
16 views

Which Zend Server to install on CentOS having PHP 5.3.3

I have two linux servers CentOS 6.5 CentOS 6.6 I have PHP 5.3.3 on these servers Which version of Zend Server should I install it to these servers?
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1answer
30 views

Connect to MariaDB through SSH fails with error 2013 - Lost connection to MySQL server at 'reading initial communication packet'

I'm trying to connect to a remote MariaDB server through SSH using Navicat Premium from Windows but all the time I can't and get this error: 2013 - Lost connection to MySQL server at 'reading ...
0
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1answer
65 views

Installing php 5.5+ on Centos 6 alongside 5.3

How can I install PHP 5.5+ alongside php 5.3 (or 5.4 with the EPEL repository) on a Centos 6 server? I don't want to remove or supersede the default version, but I would like to have both versions ...
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2answers
53 views

Can't ssh, permission denied

I have created new user using useradd USER, but I can't SSH to the server and login with it. I already have another account to which I can SSH easily. Running ssh -v USER@domain.tld is returning this ...
0
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1answer
23 views

CentOS6.6 + Postfixadmin 2.3rc5 + PHP5.3, upgrade to PHP5.4

We're running PHP5.3.8 on a CentOS6.6 mailserver with Postfixadmin 2.3rc5. The client only wanted a mailserver at first, but then wanted to move some other sites to this server. Some of the sites need ...
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1answer
53 views

How to get screen pixel data from a Centos server [closed]

I am running a Centos 7 server and I installed LAMP on it and everything works fine. I can SSH it and do all my stuff. But it happens that I need to once every hour open a website in Chrome. I cant ...