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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CentOS df misreports free disk space (due to mounted volume?)

I have a server with an LVM volume mounted under /mnt. When running df -h to check free disk space, it appears to show the space consumed under /mnt as being used in /: [root@monitor spool]# df -h ...
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25 views

Create xfs system with mfks

I'am following a guide to install Zenoss which asks me to create a xfs system. To do this I need to run the following command: mkfs -t xfs Partition The guide says as follows: 'Replace Partition ...
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1answer
65 views

nvme device dropouts - I/O 0 QID 0 timeout, controller disabled

We have 6 Supermicro servers all of the same (or very similar spec), Over the last two weeks one of them has been dropped an NVMe disk at random times due to: [ 66.856719] nvme 0000:03:00.0: I/O 0 ...
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49 views

Why does MariaDB hang on shutdown on CentOS 7?

I installed MariaDB 5.5 using the CentOS 7 packages (yum install mariadb mariadb-server). The server starts up OK and seems to work fine, but it won't shut down properly. Every time I do systemctl ...
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3answers
128 views

Yum update errors

I try to run yum update but I have three errors. I try to run the commands suggested but change nothing. How I can solve this errors? --> Processing Dependency: libzip.so.4 for package: ...
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0answers
26 views

How can I configure a Django website to work with Apache 2.4 VirtualHosts?

I recently started developing Django websites and I want to deploy them on a CentOS VPS with mod_wsgi and Apache. I followed this guide and it works perfectly, but I would like to have more than one ...
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1answer
43 views

Unable to access Amazon EC2 Centos 6 web server with Elastic IP

I'm new to linux and AWS. What I've done: 1. I've setup a Centos 6 instance from the AWS store. 2. I just installed the web server and configured the web server with the basics. 3. I've setup the ...
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3answers
128 views

upgrading openssl in CentOS 7

First, I tried downloading the source tarball openssl-1.0.1s.tar.gz from openssl.org and doing a ./config && make install, and although it seems to have completed the process successfully, I ...
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1answer
55 views

Error configuring Cron with php command

So i have been configuring a phpIPAM server and as the documentation suggests, to make an automatic discovery of hosts, i need to use a scheduled process. I have tried in /etc/cron.d with no luck and ...
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2answers
65 views

How to keep openvpn connection open on Centos

I access test server via shell and i use this command to connect to VPN sudo openvpn client.conf I want to keep the connection open with the VPN, something like service when you make service ...
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1answer
75 views

Firewalld blocks IPv6, ignores config

I'm trying to setup an IPv6 web-server on CentOS 7.2 with NGINX. I have tested my IPv6 connectivity outgoing and incoming - everything works. My IP, AAAA records, etc as fine as well. Essentially ...
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2answers
46 views

Someone sending email through my Postfix/Dove

there might have been answers to this many times. But I can't seem to find one that fits my issues so here we go: I've ran an email server on my centos machine for over four months without problem, ...
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2answers
74 views

Linux SSH Timeout [closed]

I have been struggling with a couple system timing out after X minutes of inactivity and not sure how to fix it. I have a CentOS box at my office. Connect to SSH can not touch it for 2 hours and its ...
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0answers
17 views

Getting “Failed to initialize temporary dir” in Dovecot when doing MOVE to Spam via IMAP

The IMAP client attempts to move emails in Spam folder. Sometimes (very rarely) this operation fails as below: > TAG4 UID MOVE 32235,32234 "Spam" < TAG4 NO [CANNOT] Failed to initialize ...
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1answer
44 views

Backup CentOS VM on Remote Server without snapshots

I have a VM with CentOS Server installed, which is for Email and Web Services, on a free esxi. The entire esxi has 2 TB usable and the CentOS server has 1.5 TB provisioned. Another CentOS VM that runs ...
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1answer
29 views

Why is lfd prematurely removing blocks?

As you can see in the excerpted log file below (from /var/log/lfd.log), lfd is prematurely removing temporary blocks that it imposes on IPs: Apr 7 13:07:59 host lfd[32117]: (wordpressxmlrpc) Request ...
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0answers
13 views

How do I use Client9's IPCat with IPTables

I'd like to block all ips of all datacenters in the world with this list: https://github.com/client9/ipcat But I don't know how to use that list, I'd like a bash script that checks if there's an ...
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2answers
54 views

Build a production IPA server without integrate DNS and NTP with client

We are going to deploy a centralized authentication Linux server (RHEL6) for our RedHat/CentOS servers in Data Center environment. I made some search I believe Free IPA is the best choice since it's ...
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1answer
23 views

CentOS: How to create a default route after server starts

I'm using CentOS 6.7 on Proxmox KVM. Now I would like to get my network-connection working. This is my config: Now I have to perform ip route add 89.xxx.xxx.1 dev eth0 and ip route add ...
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0answers
22 views

“-bash: fork: retry: …” on SSH connection

When I'm connecting via ssh to my useraccount of my server, I'm getting the following error: -bash: fork: retry: No child processes -bash: fork: Resource temporarily unavailable Does anyone ...
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1answer
26 views

Web App Error After Installing Java on Centos Server

Good day. My web app is programmed in jsp, using some of jQuery and javascript, is on a server with Centos 6.4, the app run its own java 1.7.0 - tomcat 8.0.21 and between its functions, uses ...
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1answer
49 views

Very Huge Sized Cache of Duplicity

I am currently using a duplicity script to backup my 110G/2T CentOS server to a 2T sftp server. Since 4 days passed, duplicity backed up just 90G. This is not a problem. The main problem is; I have ...
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0answers
17 views

WSGI socket errors with Trac install - (prefork, not ITK)

I am trying to run Trac using Apache 2.2.15 and mod_wsgi 3.2 (prefork). I am having the same socket problem described here: WSGI says "permissions denied" on my Ubuntu server, no ...
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0answers
17 views

Exclude or change package used as dependency in rpm package under CentOS

I have an RPM package that depends on many other packages, so installing it will install everything I need - quite a normal approach. But one of the packages depends on custom nginx build (general ...
2
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1answer
29 views

NFS - Multiple sub dirs - Only one squashing as expected

Getting an unexpected behavior when mounting more than a single share. NFS Server $ -> cd /mnt/raid/nas && ls -lZa drwxrwxr-x. nas filer unconfined_u:object_r:file_t:s0 file ...
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0answers
42 views

Error connecting to IMAP server due to Permission denied

I'm using Postfix as MTA, Dovecot as IMAP server and Squirrel mail for web client. All of them are hosted in centos 6.7. Everything goes fine, but sometimes it shows following error(I face this more ...
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2answers
46 views

Cannot copy a local file to live server over a port other than 22 [closed]

I am trying to copy a file from my computer to my server through scp command. I have changed the default sshd port from 22 to 36871. Now, the problem is when I issue the scp command over port 36871, I ...
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0answers
19 views

SSL Port 8443 blocked in node.js

I have node.js listening on port 8443 using SSL . net stat shows node listening and I can telnet to the port. However, access is blocked for some reason. Firewall list ports shows that the port is ...
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0answers
19 views

Apache process memory footprint - disabling modules has no effect

Apache processes running on my server are using much more memory than I would expect. OS: Centos 7 RAM: 4GB mpm: Pre-fork php: mod_php My httpd.conf includes the modules in the following manner: ...
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2answers
17 views

Removing root access from pre-existing user accounts

I have a group of servers that I want to retain the users and their data. My problem is that my users already had root access to their servers and some have installed software using the root account. ...
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0answers
23 views

firewalld multiple public ips to multiple private ips routing

I'm trying to use CentOS 7 server as a firewall/nat for some sensitive servers on the LAN. The CentOS server has multiple public IPs (one per box on the LAN) and I'm trying to associate each external ...
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2answers
39 views

The data connection could not be established: EHOSTUNREACH - No route to host : Issue only with ftpes

I am getting following error while connecting to my ftp server. I have configured my ftp client with following details. ftp host : ftpes://hostname ftp user : username password : ******** Port : 21 ...
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0answers
49 views

User ldap cannot change password : LDAP password information update failed: Insufficient access

I'm using centos 6.7 to create LDAP server, but the user still cannot change their own password. The error when user try to change the password : [john2@servergw ~]$ passwd Changing password for ...
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0answers
29 views

NGNIX server blocks didn't work

I have 4 websites on VPS ip 104.207.148.242. I have been install NGNIX 1.8.1 successful. I do these steps: Make web directories: sudo mkdir -p /var/www/codingvn.com/html sudo mkdir -p ...
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2answers
27 views

Unable to install Subversion on Centos 6

I am attempting to install the subversion client on Centos 6.7 but after running: yum install subversion I get the below response: Error: Package: subversion-1.6.17-1.el5.x86_64 (amberdms-updates) ...
8
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1answer
108 views

CentOS 7 - Directories created through VSFTPD not inheriting SELinux contexts

Our company has a webserver with CentOS 7 and our customers manage their websites through FTP (vsftpd). SELinux is in enforcing mode. The issue is that data created/uploadad through VSFTPD is not ...
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0answers
20 views

Spacewalk: internal server error creating Kickstart distribution

So a fresh CentOS 7.2 install, fully updated. Installed Spacewalk according to this guide: Here Now Im at the point where I need to create a Kickstart distribution. I fill out the following: ...
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2answers
55 views

Who is the behind Webtatic repository and do you trust it

Webtatic repository has lots of useful packages for CentOS and RedHat. However the repository is very opaque and I have hard time to find information of who is behind it, appart of "Andrew Thompson", ...
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1answer
25 views

Identical DHCP leases, excessive dhcp traffic

Fresh install of CentOS 7, removed dnsmasq, installed dhcp server, iptables, webmin, apache. This is school and lot of switches and wifi (bridge mode) AP's connected to this router One network - ...
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1answer
64 views

How to config vsftpd to map virtual user to a custom local user?

I would like that virtual user use a defined local user. this local user is member of groups apache (www-data for debian user, I use here a centos7) and ftp useradd ftpuser -d /var/www -g apache -G ...
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0answers
33 views

Webmin's Bacula Backup System module doesn't work after restart BareOS director service

I'm using BareOS 15.2 on CentOS 6.7, and for administration, using Webmin 1.791 with Bacula Backup System module. Problem is this. When I power on and start server, everything works just fine ...
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1answer
23 views

Tar file extract everything in archive but one specific folder

I am using tar -xf archive.tar -C /home/user/target/folder (in a bash script) to extract the contents of a specific archive (archive.tar) into the target directory (/home/user/target/folder) so that ...
1
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1answer
39 views

`yum-security` functionality for CentOS?

The question here is similar, but not identical, to my (broader) question, which is: TLD;DR version Are there any tools for CentOS 6 (preferably in the base or EPEL repos) which provide any or all ...
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0answers
50 views

How to create systemd unit file for phpbrew?

I'd like to create a unit file for systemd which will autostart PHP FPM after server reboot. Here is the file content: [Unit] Description=PHP 5.5.32 FPM [Service] User=deploy Group=deploy ...
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1answer
19 views

CentOS: What to do with packages installed from DVD after network is enabled

I had to install a couple packages manually from the CentOS DVD before I had networking set up. Of course, yum reports them as "From repo : c7-media" I want to know if, when any updates come out for ...
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1answer
25 views

Speed: nginx serving static content even faster: fixed folder ; how can I

we run centos and nginx one of latest versions in 2016. We use 1 media directory with some underlying subdirectories. FTTB for php is 200ms which is very fast - but now I discovered that the JS CSS ...
2
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1answer
38 views

Equivalent to checkrestart for CentOS?

This is checkrestart. check which processes need to be restarted after an upgrade Are there any packages which provide that functionality? Hopefully obvious, but this answer is completely ...
2
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2answers
24 views

Need Help Upgrading LAMP (Centos) Server

I just took over the server admin duties for a CENTOS box (6.5-FINAL), and I need some direction, as I don't come from the LAMP side. The box is running: L: CentOS 6.5 FINAL A: 2.2.15 (Centos) M: ...
2
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0answers
85 views

Install CentOS 6 on HP ML 150 gen9 server with b140i raid controller

I have HP ML 150 with Smart Array b140i controller. I want to install CentOS 6.6, but the driver isn't built-in the ISO. I have download the Driver and install in the USB(dd). I need the command for ...
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0answers
24 views

changing the IP address of rock compute node

In a cluster where the server is Centos-6.5 and the compute nodes are Rocks, I have changed the IP address of the server. Problem is, the compute nods stuck at the grub> prompt and they are not ...