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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How to find which memory has CE error?

I think I have a memory in my server which has errors and I am wondering how I can find which one it is. Server model: Supermicro 6072R-EN3RFT RAM: 128 GB CentOS 7 with latest updates installed ...
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1answer
23 views

completely remove phpmyadmin centos

I removed phpmyadmin on my CentOS server by typing yum erase phpmyadmin Then I checked if it's still in the server by locate and it displayed this: /etc/httpd/conf.d/phpmyadmin.conf /usr/share/...
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1answer
1k views

How to run Visual VM on remote centos

We have a java application residing on centos machine. From our windows machine we plan to connect to the application. We have enabled jstatd and confirmed is running. The issue now is visual vm can ...
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9 views

“effective” flag appearing in ACL

First time I use ACLs in Linux Centos. In a directory owned by user "git", I want the user "nginx" to be able to read and write in some folders of that directory. here's the ACLs I've set up : ...
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2answers
1k views

HP DL60 Gen9 not booting installed OS

I have an issue with 2 HP DL60 Gen9 servers. They each contains 2 x 500 G SATA HDDs. I've used Intelligent Provisioning to create a RAID 1 array using the HDDs however, the first issue I noticed is ...
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12 views

CUPS virtual printer with PDF selectable text [on hold]

Is it possible to print over IPP with the CUPS-PDF virtual printer and that the selectable text of the PDF stays selectable? I have tried with numerous HP PostScript drivers. I don't know where is ...
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1answer
1k views

ZenOSS webinterface connecting

I'm having a problem with ZenOss. I installed the centos stack installer on Centos 5.5 x64. De installation succeeded and no errors where displayed. But when I tried to surft to the ip address it ...
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2answers
3k views

CentOS 6.4 iSCSI Target - crm shell error

I try to make a iSCSI Target on CentOS 6.4 with DRBD, Pacemaker, Open-iSCSI and LVM2. Now I need to prepare the HA iSCSI Target configuration on the crm shell, but if I enter the configure mode, ...
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3answers
1k views

Postfix - Opendkim - Unable to connect to local socket

I am getting denied errors when postfix tries to connect to the unix socket for opendkim, actual error: Sep 24 15:41:43 service-a-4 postfix/cleanup[17414]: warning: connect to Milter service unix:var/...
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11 views

`docker commit` fail while using `/sbin/init`

I know, I know. It is bad to want to have access to servicectl in a container, I know! Now that this is behind us, I've got a problem. When I do something like this: docker run -P --privileged --net=...
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16 views

Gues mapping to the hypervisors network

I am quite new to KVM, and my hypervisor is a CENTOS 6 machine. It has 4 network ports em1-4. The guest machines are eithe CENTOS 6 or 7. On ports em1-3 I have set up a bond called bond0. I would ...
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2k views

CentOS 6 init script doesn't work properly

I'm setting up my ruby production server based on CentOS 6. I need a process called god (which is a process monitoring tool) to start at boot. I'm using an init script that I found here. Just as ...
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2answers
1k views

RHEL/CentOS - Is it possible to update packages only up to a certain release date?

Technically speaking, if one wanted to update a RHEL or CentOS server using yum, but only up to a certain release date (i.e. don't install any updates released after X date), would it be possible and ...
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3answers
2k 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 error:...
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4answers
45 views

CentOS extremely slow DNS lookup

For some reason, two of my machines have started suffering from extremely slow DNS lookups. Sample timed output of 'host' command: [root@ns507403 ~]# time host www.google.com www.google.com has ...
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1answer
2k views

“Disk Not Found” Error when trying to install iso image of CentOs on ESXI using VSphere

When trying to install CentOs setup as an iso image on datastore, i get an error : "Disk Not Found". I am using ESXi 4.1 as host VM. Is there a way to attach DVD/CD as iso image ? I tried "Connect at ...
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1answer
3k views

Subdomain error: server DNS address could not be found

I'm trying to add subdomain to my domain. I just installed httpd on my clean centos 7. At first I created file /etc/httpd/conf.d/htmltest.mydomain.com.conf with the following contents: <...
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4answers
6k views

How to setup /etc/issues to show the IP address for eth0

I've got a couple of linux virtual machines with bridged interfaces, and I'd like the IP address of the machine to show up after the machine boot (in the login, where it usually shows the release and ...
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2answers
4k views

CentOS 7 installer: blank screen

I am trying to figure out CentOS 7 unattended network (PXE) installations in my setup, but the installer always ends up running into a black screen without interaction options. This is being tried in ...
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2answers
3k views

What could cause an apache server to lock up with “sending reply” processes?

I'm running a CentOS server as a LAMP stack serving a custom php application. At seemingly randomly intervals it will slow down. Looking at the server-status page I see the PID list locked up with the ...
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3answers
59 views

Can not connect to the host itself

Well, the problem is simple. I have the site based on apache and trying to execute cron job at this site from the same server. Let's say my site http://example.com and cronjob is /usr/bin/curl http:/...
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0answers
30 views

Centos 7 - Sendmail not working

I'm trying to setup sendmail on my centos 7 server, but it's failing for some reason. I've opened port 25/tcp on firewall-cmd and selinux is disabled as well. It's still not working... /var/log/...
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0answers
14 views

Bacula services won't start on CentOS 5

I am trying to install Bacula onto my copy of CentOS 5 following this tutorial Installing Bacula on CentOS 5. I have followed the instructions to the very tee, but when I get to the part where I try ...
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0answers
10 views

How to *really* override redis configuration

I've got a Centos installation with a global redis configuration at /etc/redis.conf. Now, I want to create a configuration that will inherit from that config, overriding only some of the settings. I ...
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1answer
326 views

The mystery of the bad CentOS template - all VMware VMs based on this template crash sometimes

I have a template from CentOS 7 (1602) that I have deployed roughly 200 VMs using it until I noticed the issue, so it would be ideal to fix these VM's rather than start from scratch. The VM's '...
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6 views

Wrong PID: supervisord program with a Software Collections Python

I have a Python server that must be executed by a Software Collections enabled environment. The supervisord config file looks something like this: [program:xxx] command=/usr/bin/scl enable rh-...
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1answer
3k views

Tomcat fails to start, no logs or error provided

I have a Centos5 box running tomcat5 (a version before 5.5, there's no bin/version.sh script). When attempting to start tomcat, whether through init.d or service, I get the FAILED message with no ...
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1answer
4k views

Centos set default ftp directory for a user

I am setting up accounts for people to connect to the server through ssh and SFTP. When I test the login, it goes straight to the "/" directory, and I do not want that to happen. I want to make it so ...
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1answer
2k views

Mounted NFS directory not writable by Apache / PHP

Need some help here with NFS. Here's what I have (all servers running CentOS 5.6 with SELinux): 172.17.20.1 - Primary server with static IP. Varnish redirects requests to the web servers. 172.17.20.2 ...
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1answer
2k views

CentOS: DHCP Server and DHCP relay on same machine

eth0 IP: 192.168.1.100 Alias interface eth0:dhcp IP: 10.10.1.100 dhcpd.conf: authoritative; local-address 10.10.1.100; subnet 10.10.1.0 netmask 255.255.255.0 { range 10.10.1.10 10.10.1.50; ...
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2answers
29 views

docker service changes my route table

I encountered a deal problem: I have fedora24 as host and installed centos7 minimal as guest on KVM. installed docker in guest, there is one NIC by ens3 name with 192.168.122.120 address I can ssh to ...
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1answer
1k views

What cause high CPU usage on the server during file upload

When I try to upload a huge file size (approx 2GB), the server cpu usage goes really high. What should I do to fix this? I just use standard html form and php, for file upload. I'm sorry if I post ...
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2answers
1k views

Mysql 5.5 is not installed in CentOS 5.7

I am using CentOS 5.7 with 64 bit. In my machine already have MySQL 5.0.88 version. Now I want to upgrade MySQL to 5.5 version. I followed this link to start my installation process. When i give "yum -...
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2answers
20 views

NGINX loads DOM but returns 502 for Images and Assets

I'm creating a custom 50x.html page, but can't seem to load the assets from my usr/share/nginx/html directory. I think the problem lies from my upstream settings for the reverse proxy for my ...
0
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1answer
31 views

Changing httpd port

I am running httpd on CentOS 6.6. I've successfully set up a site on port 80, but now I wish to have the site on port 82, so when I type <myip>:82 in my browser I can view the site but not <...
0
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1answer
23 views

ftp reverse proxy using haproxy

is it possible to have ftp reverse proxy like http example client >> proxy >> real server i have tried using haproxy but at the end the real ip of the ftp server is exposed not ...
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2answers
24 views

CentOS server - where should I store my scripts? [closed]

I have CentOS server with WHM and few cPanel accounts. I connect to it using ssh. All cPanel accounts are stored in /home directory. centos-release-7-2.1511.el7.centos.2.10.x86_64 I also have ...
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0answers
15 views

Additional IP added to server. But opening default IP website [closed]

I have a Dedicated server (from Hetzner) with Centos7 and using vestaCP. Added an additional IP to server & in VestaCP also. Pointed a domain to that ip. When opened that IP or that domain in ...
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5answers
3k views

nginx: php-fastcgi running but php files not executing

I have recently set up a nginx server with PHP running as FastCGI process. The server is running with HTML files however PHP files are downloading instead of displaying and PHP code is not processed. ...
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0answers
10 views

Safemode and Openbasedir issues on centos + vestacp [closed]

VPS : CentOS 6.8 x64 Admin: VestaCP I am trying to rsync my sites from another server. Rsync goes fine. When I try to reach the site (the new one, rsynced to this server), I got an error in my ...
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1answer
36 views

Server sends emails to itself instead of to me

CentOS 6.7 server. When using either the Webmail or PHP mail() emails directed to me@domain.com do not get sent to my inbox for me@domain.com that I have set up with Gmail - instead they get sent to ...
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0answers
31 views

Capacity dedicated to vps [closed]

I have a machine with: Processor: Intel® Xeon® E3-1230V3 Memory ram: 16GB Storage: 2 × 1TB HDD speed link: 100Mbps this setting is equivalent to how many droplets? Actually i have 6 droplets at ...
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22 views

Client denied by server configuration in /var/log/httpd/error_log [on hold]

I have 6 different websites on my hosting and all of them work as they should. When I try to upload images to a vBulletin 5 post I get "Client denied by server configuration" for various files in ...
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0answers
7 views

autofs nfs user share not mounting folder with correction permissions, affecting ssh

Running Centos 6.3 on a jump server which maps to our core server where the nfs mounts are located. The permissions are correct on some jump servers, as well as on the core server, but some jump ...
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1answer
68 views

Can't start any service after installing iRedMail on CentOS

I have attempted to install iRedMail on one of my servers. After reboot, I can't start any service anymore. [root@mx ~]# systemctl start httpd ** (pkttyagent:16323): WARNING **: Unable to register ...
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1answer
6 views

CUPS-pdf: Documents are uploaded but not stored

I have set a virtual printer. It worked well when there were no policies. All the documents were stored in: /var/spool/myprinter/ANONYMOUS Now I obviously want to add some users so not everyone ...
2
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3answers
4k views

Production Instance : CLOSE_WAIT Connection Issue

I am using 10EC2 Instances behind 1 ELB. And ELB configured 80 to 8080 and 443 to 8080 port. And all 10EC2 instances having installed with Apache Tomcat, total request on ELB around 8000 to 10000 in ...
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1answer
16 views

How to create a Nameserver for my VPS (unmanaged) [closed]

I have purchsed a OVH (IaaS, Centos 7) VPS server. I have installed apache and php. But I have very little knowledge about server. How can I create custom name server for my VPS ? any centos command ? ...
6
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3answers
924 views

Simple way of blocking a program on CentOS 6?

One of our user has been compiling their own program within their home directory. Normally we don't mind, but this particular program has a memory leak and eats into the SWAP. We have told this user ...
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2answers
39 views

corrupted openSSL, website down can't SSH, yum, rpm etc [closed]

I was trying to install uTorrent on my PHP site and mid-process I was kicked out of SSH and the website went down. libssl.so.1.0.0 and libcrypto.so.1.0.0 were required for uTorrent so to downgrade, ...