CentOS is a Linux distribution standing for "Community ENTerprise Operating System" and is a rebuild of "Red Hat Enterprise Linux" (RHEL), belonging to the same company that distributes RHEL (Red Hat, Inc.). The "CentOS7" tag refers to versions 7.x-xxxx of CentOS, working only on 64-bit hardware. ...

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1answer
34 views

Strange folders in Pagespeed cache folder. Did I get hacked? [duplicate]

I have a Centos7 server with nginx and google pagespeed. I wanted to clear pagespeed cache for a reason but i saw lots of chinese site caches in my pagespeed cache folder like baidu.com, ly.com, ...
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11 views

Can multiple firewalld zones be active at any given time?

I've been struggling through some weird (to me) firewalld errors but am now seeing the firewall behavior I'd like. But, baffling to me, what works seems to be a mix of both the drop zone and the ...
1
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1answer
33 views

Why does my Firewalld configuration on CentOS 7 fail to start and show iptables errors?

I'd like to: Drop all incoming connections from the external Web except 80 and 443 Allow internal machines on 192.168.0.0/16 to connect to :9000 :8080 Here's what I did to setup my drop zone via ...
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votes
1answer
27 views

I cannot change privileges for folder with chmod on CentOS

On CentOS 7 server for the folder /var/lib/pgsql/9.3/data/ I do: sudo chmod -Rf 755 /var/lib/pgsql/9.3/data/ But it doesn't change privileges for folder. But sometimes it changes for 10-15 minutes. ...
0
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1answer
14 views

/etc/auto.master vs /usr/lib/systemd/system/*.automount in centos7

What's the difference/dependency between autofs and systemd automount and declarations in /etc/auto.master versus /usr/lib/systemd/system/*.automount in CentOS 7 ? Do they do exactly the same? If ...
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0answers
22 views

log error in centos7 [on hold]

I'm just a beginner in linux base opreation system. I delete a log folder(log folder and all the sub folder within log folder) under var folder because it take 19GB of my hosting. And here we got the ...
4
votes
1answer
45 views

From vSphere 5.5 - Deploying Centos 7 from template ignores customizations

I've been having troubles when deploying CentOS7 from template in that the customizations do not take effect. For the VM OS setting - I have selected RHEL7 as the OS rather than CentOS (previously ...
0
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0answers
16 views

Firewalld - allowing ICMP in custom zone (centos 7 / redhat 7)

I want to enable ICMP echo-reply in a zone defined by source. I have a zone MONITORING where I want to permit some services like mysql and echo-reply. Permiting services like mysql is simple, but I ...
0
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0answers
18 views

Sendmail sending as root@localhost

I am reconfiguring sendmail for a client who has a server that runs sendmail and a number of applications that they've developed. The applications send email out by using the sendmail command like ...
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0answers
10 views

Configuration of “Same Host Name” for my all LAN Machines under squid proxy

I am having the network model as Modem N/w Switch ISDN (Airtel) -----------> Server(Centos) [Squid] -----------------> Client Machines. ...
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1answer
35 views

How can I install httpd 2.2 in /etc/ directory in CentoOS 7

CentOS 7 has got only httpd 2.4 available in its repositories. I downloaded the 2.2 version and I did a manual installation, but httpd was installed in /usr/local/ directory. Is there any way to do ...
1
vote
1answer
43 views

Readahead for /var/lib/mongo is set to 4096KB

I'm trying to set the readahead for mongo 256 or less as recommended, I looked at the documentation for any guidance and I found this: Ensure that readahead settings for the block devices that store ...
1
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0answers
38 views

LUKS and /etc/crypttab on centos 7 - hang at startup

I have a problem with following crypttab echo "secret /dev/sdb8 none" > /etc/crypttab When I do it by hand, following way everything is ok, disk is mounted: cryptsetup luksFormat /dev/sdb8 ...
0
votes
1answer
56 views

Using Firewall-cmd to create address specific restrictions in centos 7

How do I create a firewall rule using firewall-cmd tool (new firewalld) such that I will limit specific network to access only one service and allow all on all service in one zone. For example: I ...
1
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0answers
36 views

Ghost not working on CentOs 7 despite clean install

I followed most of this tutorial to install Ghost on CentOs 7 but, despite the install going perfectly I am unable to see the welcome page. Here are a list of commands I used, let me know if I made ...
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votes
1answer
24 views

Internet Explorer cannot display index.html in Samba Share

I have virtual Centos box with Samba and Apache server installed. I created shared folder in Samba and I am able map that folder via my virtual Windows Server '12. I am able to see and edit files in ...
0
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1answer
36 views

How can I permanently set ulimit -n 8192 in Centos 7?

I would like to permanently set the open file limit for all users in Centos 7, but there seems to be a lot of conflicting information out there on the googles. Thanks!
0
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0answers
20 views

How to source admin credentials to gain access to admin-only CLI commands in Openstack's Nova?

According to this documentation the admin credentials need to be sourced as follows: [vagrant@localhost ~]$ source admin-openrc.sh -bash: admin-openrc.sh: No such file or directory The suspicion is ...
0
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1answer
13 views

Client not routing through CentOS7 OpenVPN

I recently setup a server on digitalocean, i setup the vpn server key etc and i can connect with my client, the problem is that if i connect and i google for my public ip adress that i don't get the ...
1
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0answers
36 views

cifs Required Key Not Available

I have joined to a zentyal domain (AD Domain) using PowerBroker IS and I want it to mount my remote home directories when a remote user logs in. this is the config for PBIS: AllowDeleteTo "" ...
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votes
2answers
48 views

nginx Virtual Host Problems

I am running nginx on centos and using the method of having individual files for each domain inside a sites-available directory symlinked to sites-enabled. Both conf files are almost identical. My ...
0
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0answers
33 views

CentOS 7 Minimal X11 forward SSHD misconfigured xauth paths

When I ssh to CentOS from Mac OSX ssh user@server -X -vv The X forwarding works fine but I've been seeing this message Warning: untrusted X11 forwarding setup failed: xauth key data not ...
0
votes
3answers
107 views

Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111)

I've developed a website on the Silverstripe framework and deployed this to a digital ocean server using centos (7.0.1406) , mariadb (10.0.14) and apache (2.4.6). I'm somewhat of a novice when it ...
0
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0answers
43 views

etcd will not start on CoreOS in OpenStack instances

I have deployed three instances of CoreOS in my OpenStack setup. I can ssh into the instances, but etcd will not start. systemcctl status -l etd says: ● etcd.service - etcd Loaded: loaded ...
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0answers
79 views

Installing MariaDB + Galera via yum fails with “No package MariaDB-Galera-server available”

I'm spun up a brand new Cento OS 7 virtual machine and I'm following this tutorial to install a MariaDB + Galera cluster. I've added the MariaDB repos as follows: vi /etc/yum.repos.d/MariaDB.repo ...
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1answer
53 views

Preparing CentOS 7 as a virtual machine

I've removed the HWADDR from ifcfg-eth0 and touched /.unconfigured, but when I restart the virtual machine, HWADDR is not added back to the ifcfg-eth0. Is there something else we should be doing?
1
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1answer
51 views

Linux QEMU issue with bridge network interface

I am trying to setup a bridge interface for one of my QEMU running on CentOS 7. I have below scripts for TAP interface running $ cat /etc/qemu-ifup ifconfig ens192 down ifconfig ens192 0.0.0.0 ...
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votes
2answers
48 views

Apache unable to write on 2777 folder [duplicate]

I am using smarty template system on my website. When it tries to cache some data, a fatal error occurs: Fatal error: Smarty error: unable to write to $compile_dir '/var/www/html/cache/frontend'. Be ...
0
votes
1answer
69 views

Centos 7 - Keepalived Linux Virtual Server is not working

Environment: Centos 7 Keepalived Machine I enp0s3 --> 192.168.1.38 (connects to the outside world) en0s8 --> 192.168.100.101 (connects to internal network) Machine II enp0s3 --> ...
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votes
1answer
70 views

issues with installing, No config files OpenVPN 2.3.2-4.el7.x86_64 on Centos 7

Having some issues with OpenVPN 2.3.2-4.el7.x86_64 on Centos 7 (it's a VPS with digital ocean). Basically I am trying to install and configure OpenVPN to use as a VPN server. However it seems I am ...
0
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1answer
25 views

Centos 7 on Windows Azure, who mounts /dev/sdb? (systemd)

I need to find out which systemd service mounts /dev/sdb (aka /mnt/resource) on Windows Azure? I am using Centos 7 image and it is systemd-based and I am trying to launch a service that depends on ...
1
vote
1answer
37 views

CentOS 7 acl not working for apache

I want to access a user's directory from a cgi script. I set the acl on the directory successfully but the script still gets "Permission denied" when trying to access that directory. I su'd to ...
1
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0answers
29 views

httpd not starting because /run/httpd is missing

httpd fails to start on one of my servers running centos 7 because /run/httpd is missing, which means httpd can't create /run/httpd/httpd.pid and thus fails to start. My question is, why is ...
0
votes
1answer
42 views

rdo juno openstack glance operations fail

glance operations are failing glance --debug image-delete and glance --debug image-create don't spew any errors they just hang indefinitely python-glance-store-0.1.8-1.el7.centos.noarch ...
0
votes
1answer
211 views

Apache doesn't start (centos)

I've got a problem with apache : centos 7 + directamin + custombuild Version nginx_apache I restart my service this morning and apache doesn't start. I test ./build all or only apache.... systemctl ...
1
vote
1answer
231 views

How can I coax RHEL / CentOS / SL 7 into booting normally with degraded software RAID 1

I set up a new server (my first with this version of Linux). I installed a pair of 160 GB blank SATA HDDs (one Seagate and one WDC, but with exactly the same number of LBA sectors) in an old machine, ...
0
votes
1answer
216 views

can't install phpmyadmin have error

I have some error when I tried to install phpmyadin, did I miss something? CentOS 7 # wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-2.noarch.rpm # wget ...
0
votes
2answers
129 views

CentOS 7 ec2 smtpd - Client host rejected: Access denied

I've been trying to figure this out for hours and can't quite wrap my head around it. I have a mail server on an ec2 instance running CentOS7 that has postfix, courier (authlib and imap), sasl, ...
0
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0answers
58 views

Configure a Bridge Device in CentOS 7 via Kickstart

I wish to configure a br0 bridge with kickstart using eth0 as its slave. Is this possible? I have not seen any kickstart examples that do this. I wish to use this box as a KVM host, so I'm ...
0
votes
1answer
97 views

How to include cinnamon via kickstart in CentOS 7

I'm trying to install cinnamon via kickstart in CentOS 7. In previous versions of CentOS/RHEL there was the %packages --resolvedeps options This option is no longer available. I have the following ...
1
vote
1answer
154 views

Installing Nagios 4.0.2 on Centos 7 - service fails to start

Having followed the instructions here http://linoxide.com/how-tos/install-configure-nagios-centos-7/ (but downloading Nagios 4.0.2 instead of 4.0.7 - I have to use that version), I have reached a ...
0
votes
1answer
71 views

Configuring kerberos/ntlm single signon with apache and sssd

What is the proper/cleanest way of setting up apache to support SSO using NTLM, or preferably Kerberos, with CentOS7 running sssd connected to an Active Directory domain controller? With realmd, ...
2
votes
1answer
85 views

postfix-mysql package on CentOS 7

I'm following this tutorial on how to install a secure mail server. The guide is for Ubuntu 14.04LTS but I'm doing it with a few modifications for my CentOS 7 system. I am however stuck on ...
0
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0answers
136 views

VNC Not Seeing Gnome Desktop in Centos 7

I have a linux box running CentOS 7, which I installed in bash only mode (so it just boots straight into the command prompt), which I am using as a file server. I could do with having a GUI for ...
0
votes
1answer
131 views

Centos 7 with SElinux: openvpn and DNS

I'm trying to use openvpn as client on centos 7. It works fine, but i cannot get DNS from server. As you know, there is no resolvconf in new Centos, so, standard update-resolv-conf script doesn't ...
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0answers
26 views

Spark IM Connectivity with openfire issue

I am trying to install Spark IM for this I have also setup openfire server on CentOS 7 which is currently accessible by 127.0.0.1:9090, I also have XAMPP installed on the same machine which is ...
0
votes
1answer
75 views

Tomcat and Jenkins separately on the same server

I have never installed Jenkins as package on CentOS, but now I tried and it doesn't seem to work correctly side-by-side with standalone Tomcat server. First of all, I installed tomcat by yum install ...
2
votes
0answers
135 views

Add specific ports to Centos firewall

I am fairly new to Centos/Linux and have been trying to configure my firewall to restrict access to mysql and ssh for only a few IP addresses. When I run the following and do a port scan I do see that ...
1
vote
1answer
46 views

Can't access KVM Host (network brige)

I have a strange problem since I rebooted my KVM Host running CentOS 7. I have a network bridge which was going fine, I could access my KVM hosts and guests, but since reboot, I can't access the ...
0
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2answers
598 views

CentOS 7 is not setting my gateway from DHCP

I have a Minimal Install of CentOS 7. I have disabled the Network Manager as I want to setup my network the "old school" way. systemctl stop NetworkManager systemctl disable NetworkManager ...