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 CentOS on RAID1 + RAID10

I'm trying to reproduce this raid configuration with a fresh CentOs installation making experiments on VM. I have the current setup composed by (4x) HDDS sda, sdb, sdc, sdd partitioned in the same ...
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2answers
20 views

Why is nginx running with a new PID each time I list my processes

Why is nginx restarting with a new PID each time I list processes? And also, why is nginx running to begin with? Refer to image below for output. Nginx Output I don't know if this is useful but I ...
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2answers
13 views

Dovecot: “Failed to write to main log (No space left on device)”

Every single morning, my dovecot service goes down and i need to start it again, and it is repeating day by day, so i was looking for some clue to find out why it was coming down, and i found that ...
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2answers
13 views

nginx 1.8.1 only works with default root

I have Cent OS 6.6 with nginx 1.8.1 installed. It seems like if I change the root in the conf file to something other than the default '/usr/share/nginx' it gives an error 403 Permission denied. I ...
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0answers
9 views

My Server trying to find known vulnerabilities in other server [duplicate]

I got mail "Abuse message" Greetings, We have detected abuse from the IP address MYIP.XX.XX.XX, which according to a whois lookup is on your network. It seams to be trying to find ...
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0answers
25 views

Webserver & Mailserver as DNS master-slave

I have two servers, a webserver and mailserver. Each is running CentOS webpanel and has dns zone/records generated when I add domains. I am looking to merge all dns records and share them across both ...
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0answers
13 views

Postfix selectively bypassing the spam

I have Centos 7 installed and postfix as MTA on the server. Here is my anti spam postfix additional configuration: # main.cf ANTI SPAM disable_vrfy_command = yes smtpd_delay_reject = yes ...
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0answers
8 views

Adding trusted root certificates to the server cent os

I m trying to install a root certificate in my cent OS box. I did the following Enable the dynamic CA configuration feature: update-ca-trust force-enable Add it as a new file to ...
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3answers
39 views

Can't get MYSQL to be visible from outside

I know there's a lot of topics about this but i've read them all and still can't access MYSQL from outside... Any help will be apreciated I'm using Centos 6.7. This is my /etc/my.cnf: bind-address ...
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0answers
16 views

Can CentOS user desktops operate on a Debian/Ubuntu network? [on hold]

Could CentOS desktops (required to run RPM-only applications) operate in the context of an Ubuntu intranet? e.g. remote file hosting, network authentication and intranet applications are managed by ...
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1answer
24 views

How to upgrade LAMP on CentOS? [on hold]

I am running CentOS 7.2 (as confirmed by hostnamectl). And according to Wikipedia, this was released 2015-12-14. Now according to PHP, the only supported version at that time was 5.6. However, when I ...
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3answers
53 views

how to change the startup order of linux init scripts in Redhat, Centos

From this changing How to change Linux services startup/boot order? changing the values of the symbolic links it is evident that startup order is changed. In debian derivatives we use ...
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0answers
12 views

Graceful Shutdown Tomcat [on hold]

I would like shut-down my tomcat instance gracefully, a graceful should involve the below processes, The respective tomcat instance should reject all (new) incoming requests Check for any in-flight ...
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0answers
8 views

What happens when I press Ctrl+C when e2fsck running?

What happens when I press Ctrl+C when e2fsck running ? will it go to command prompt ? or it will reboot & then the server again goes to fsck ? Reason Why I want ? I want the server to up ...
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0answers
17 views

Installing Centos 7 on HP N54L [on hold]

I already opened a thread here. But no one could help me. I have an HP Microserver N54L (Gen7). I started with Debian and switched to Scientific Linux 7.1, now I want to install Centos 7.2 After ...
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0answers
6 views

eCommerce combined Webserver and database server or Docker instances [duplicate]

I get a server with 2x QC and 16-32GB RAM now I would like to host a eCommerce Platform and I ask me which solution would better if I have a combined Webserver and DB Server or If I have two docker ...
2
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2answers
23 views

Centos 6 soft openfiles 1024?

Here are the conf files and details, no matter what I did, soft openfiles wont go over 1024. CENTOS 6.7 x86_64 cat /etc/security/limits.conf * soft nproc 65535 * hard nproc 65535 * soft nofile 65535 ...
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74 views
+50

Unusually large number of httpd processes and high CPU load on MongoDB replica set members

I am investigating a strange behavior on 3 CentOS machines serving as a MongoDB replica set, whereas one of them is also hosting a PHP web app utilizing the MongoDB replica set. The basic setup is as ...
2
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0answers
50 views

Can't stop and reformat /dev/md0

I want to reformat /dev/md0, which is a RAID0 array consisting of 4 disks (sd[bcde]). However, when I tried to run the command mke2fs, I received the following error message: /dev/md0 is apparently ...
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0answers
9 views

xtrabackup/innobackupex: Full/Incremental backup advice

OS: Centos 7 Database: Mysql/MariaDB I have written my own shell script to produce Full and Incremental backups using innobackupex. I have read through the man pages for innobackupex and tried to ...
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1answer
21 views

Small queries wait for large queries to resolve MYSQL PHP on Centos 6.5

I have a Centos 6.5, and I'm running Vaadin on Tomcat, This application has really heavy queries for reports and stuffs. My problem is, when I'm connect to MYSQL from PHP, when I made a small query, ...
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0answers
10 views

unable to connect google cloud compute engine ssh with browser or root parttions is full

I try to log-in ssh browser with google developer console but i am not able to connect and other user have no root permission to remove and delete the files. I checked from other normal user,root ...
2
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1answer
45 views

Cryptsetup luks - Check that kernel supports aes-xts-plain64 cipher

I encrypted a bunch of hard drives with cryptsetup luks encryption on CentOS 5. Everything was fine, until I upgraded my system to CentOS 6. Now I cannot mount the disks anymore. To mount with my ...
0
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1answer
29 views

Ceph: HEALTH_WARN clock skew detected

I have configured ntp on Ceph nodes and time is synchronized! But ceph status always shows clock skew. ceph health detail shows: mon.node2 aadr 192.168.56.102:6789/0 clock skew 7192.45s > max ...
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0answers
26 views

CentOS Crond Session Errors [closed]

My Machine is: OS: CentOS Linux release 7.1.1503 (Core) RAM: 80GB CPU: 24 Cores (48 Threads) In this server i have create almost 250 users and i'm running cronjobs every minute, in all of them. I ...
1
vote
1answer
36 views

Implications of increasing physical ram of VM

I have a Centos7 VM running under VMware and I'm considering increasing virtual memory in the Centos VM. Currently my VM has 8GB of virtual memory, 6GB of swap and using 0 swap right now. I am ...
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0answers
21 views

Got kernel panic with 3w-sas driver after kernel update

I use CentOS 6.7 and I've got kernel panic related to LSI 3ware 9750-4i Controller after kernel update from 2.6.32-431.17.1.el6.x86_64 to 2.6.32-573.12.1.el6.x86_64. It is minor update, so I think it ...
2
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2answers
34 views

Cannot extend partition in CentOS 6. Second partition is preventing it

I have a server on AWS EC2 that was set up by a sysadmin I hired. I'm running very low on my /dev/xvda1 partition (where we keep the website code, assets, etc), and I've been looking to extend this. ...
0
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1answer
18 views

Multiple tmpfs exists with total combined space more than total memory

I have a VPS with 7.5G ram running CentOS 7, and tbh I haven't done much optimizations etc as its serving the site pretty good. Today I was going to create a ramdisk for mysql temp tables, so I ...
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0answers
19 views

Issue with Fail2ban and Mikrotik Firewall

OS: CentOS 7.1 At my organization we are currently assessing using Fail2ban with the firewall on our Mikrotik router. I want Fail2ban to communicate any IP flagged as banned to the Mikrotik ...
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27 views

Cannot connect with slave from Jenkins master. Connection broken

I have setup one Jenkins Master (CentOS 7), and one node on which my project is running (dev environment, Windows 7). My project requirement is Java 1.6. On my Windows 7 and Java 1.7 machine, I can ...
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0answers
37 views

How to stop specific LFD emails

I am running CSF and LFD on a number of Centos servers - whilst it is a great product, I am getting frustrated with controlling the flow of (unnecessary) emails. For example, I use rsync to replicate ...
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0answers
15 views

Server doesn't boot after installing X Window System

I've been trying to install XFCE to use with VNC on a Centos 7 server but every time I install X Window System the server doesn't boot. Always with the dracut error: /dev/md1 does not exists Boot ...
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2answers
25 views

VPS Upload speeds < 1 mbps

I have a Centos server running in eastern canada. When I use speedtest.net and connect to a server up there, I get around 30 down. If I use speedtest-cli and connect to a server down here I get ...
1
vote
1answer
21 views

How to prevent compression of images served via HTTP

I have an already optimized JPEG image in my server 32.07 kB (and in my local computer), 800px * 534px, if I request it via browser, it keeps the same width * height, but its size gets smaller 17,97 ...
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0answers
22 views

PHP page refuses to appear despite checking php-fpm, SELinux, and nginx

Problem I have a small web server that hosts a small PHP page that performs a very small function. I used to host this on another machine. I move the website to a new machine with a different ...
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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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1answer
13 views

Apt-Dater: Error executing Error executing 'lsb_release -a'

I successfully deployed apt-dater (Debian-machine) and apt-dater-host (CentOS) to 2 different nodes via puppet. Now apt-dater is showing the new host, but the state is always "unknown". If I enter ...
0
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1answer
15 views

Install apt-dater-host on CentOS-Systems using puppet

I would like to install apt-dater-host on Debian and CentOS-based systems using puppet and foreman. On Debian the package is available on the standard repos - but on CentOs this is not the case - I ...
2
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0answers
14 views

SELinux: manually changing files in /etc/selinux/targeted/contexts/files/

I'm setting up a CentOS 7 server in which the /home directory has to be located on another partition and then mounted with bind-mount. So: /data/homes should be bind-mounted to /home. The problem is ...
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0answers
14 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 ...
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0answers
34 views

Installed Ajenti panel, it starts but accessing it makes it stop

I am on CentOS 7. So when I go to https://x.x.x.x:8000, it doesn't load anything. If I disable ssl from the Ajenti config file, then it connects without ssl. With SSL enabled however, I have ...
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0answers
8 views

imported imap spam assassin [duplicate]

I moved my server to an other VPS. I also synced the imap messages to this new VPS. On this VPS i've got spamassassin installed. The old server was very slow and couldn't handle spamassassin, so I ...
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0answers
27 views

Adding network-fault tolerance to drbd or drbd alternatives

I've been working with drbd for about a year now, and at this point I'm tearing my hair out in frustration. Every time there is a network fault (something that is disappointingly common in the ...
0
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1answer
31 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
18 views

Iptables and rate limit http URL

I need limit requests to xmlrpc.php in Centos 6.x. I have this rules added, but nothing do it. Thanks for help. iptables -I INPUT 1 -p tcp -m state --state NEW -m recent --rcheck --seconds 600 ...
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votes
1answer
33 views

is there a way to findout about a file history (create date / create directory / moved directory ) ? [duplicate]

so i found a shell deep in a directory of my website . my website doesn't have a upload section and i use a well known framework and it covers sql injection ( i use codeigniter active record to work ...
0
votes
1answer
32 views

Asterisk server with two connections [closed]

I need that configuartion It works, but with only one connection, with eth0 Or with only mobile broadband I searched for it, but found only forwardind/routing solutions. How i can see asterisk ...
1
vote
2answers
103 views

PHP 7 conflicts with PHP 5 (Centos 7)

Trying to install PHP 7 now that it's available; (on centos 7) added repo's: rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm rpm -Uvh ...
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1answer
18 views

Why my disk elevator is set to “deadline”

I have CentOS 6.x Linux server with kernel 2.6.32-573.8.1.el6.x86_64. I did some checks today and I found that disk elevator is "deadline". [root@srv ~]# cat /sys/block/sda/queue/scheduler noop ...