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636 views

High load average, low CPU and IO (Centos 5.7)

A Drupal 7 site with CiviCRM, after running smoothly for a year on a 1&1 VPS suddenly became unresponsive. Now pages eventually load, but can take more than a minute. Looking at resource use in ...
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910 views

TRIM on OCZ RevoDrive 3 on CentOS

I've got an OCZ RevoDrive 3 mounted as / on my CentOS 6.3 box running kernel 2.6.32-220.17.1.el6.x86_64. /boot is on a HDD since OCZ's driver apparently doesn't yet support booting directly to it. ...
2
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1k views

Tomcat Unable to Connect

I have done a fresh install of Tomcat 7 on CentOS 6.2 system. Tomcat starts successfully without any errors in logs, but I am not able to access it on mydomain.com:8080. I get "cannot connect" ...
2
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346 views

What is the default metadata size in temporary volume during a pvmove?

I ran into an interesting error when attempting to address a particular problem. We had an issue where we have to move the extents over to new physical volumes because the metadata size was too ...
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2k views

Yum install on CentOS 6.2

I can't install any php extension Epel repository enabled Yum is updated yum repolist shows repo id repo name ...
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1k views

bypass ip destination squid tproxy bridge

I have configured a squid transparent tproxy. All works fine. Now I need all the traffic going to an external IP (internet) does not pass through the proxy. Do I need to modify iptables, ebetables ...
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0answers
12 views

puppet master is not executing autosign script

I have created a shell script to autosign Puppet certificate requests at /etc/puppet/autosign.sh and have configured this path in the puppet master's configuration. autosign = ...
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0answers
22 views

Failing to connect Azure CentOS VM via Sentora FTP

I created CentOS 6.5 and I installed Sentora 1.0.3 on Azure VM Service. But i couldn't make a connection with Sentora FTP account. I'm trying to connect Sentora ftp account with FileZilla. I get ...
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18 views

opening everything for forward only zone centos

We have a forward only server, which has forward lookup zones and no self-awareness (to resolve any name other than the zone file records). This setup was created for the clients to restrict the ...
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44 views

How to name systemd mount unit properly?

I'm trying to automount CephFS after boot via systemd I've got the next unit: [Unit] SourcePath=/etc/fstab DefaultDependencies=no After=remote-fs-pre.target After=network.target Wants=network.target ...
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27 views

ifconfig output different for non-root user

we use a montoring system to capture network traffic. the output as root user is fine: eth0 Link encap:Ethernet HWaddr 00:1E:67:E6:D6:FE inet addr:149.56.19.13 Bcast:149.56.19.255 ...
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15 views

Iptables multiple port redirects based on destination address

I have iptables setup for selective routing. In the current configuration it checks if the dst address is listed in a specific chain and if it is not it redirects the traffic to my proxy port which is ...
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0answers
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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0answers
14 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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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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36 views

Enabling console login on CentOS

I've inherited a CentOS system where I can't login via the console. I can ssh to the machine and login, but not via the console. How do I go about enabling console logins?
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21 views

CentOS 7 ifup scripts actually doesn't change interface name

It has occurred to me that in CentOS7. While one can still specify interface names in sysconfig, the ifup scripts actually does not change interface fact "via ip link set dev ${DEVICE} name". For ...
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55 views

Configuring OpenLDAP over TLS for RHEL/CentOS 6.5

i've been banging my head against the wall with something that seems to be a simple concept. I have two RHEL 6.5 servers. One will be acting as the OpenLDAP server, and one will be a client ...
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10 views

Spacewalk 1.7 - system overview - 0 packages?

I have some systems, that are long now with Centos 6 channel associated. In the systems overview of the SpaceWalk server 1.7 I see only that all of the Centos 6 systems are ok , and 0 Packages to be ...
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26 views

How do I set up omnibus builder environment on vagrant centos box using chef?

I need an omnibus builder box for building a python cli package. I would like to use this cookbook, on this vagrantbox I am running this as root since the omnibus installer needs to check something ...
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17 views

Pinning packages in RH SpaceWalk on Centos 7?

Is there any way to pin rpm packages to versions in SpaceWalk? We have kernels running on rare hardware, compiling the kernel is a pain and we don't want or need to do it any more often than major ...
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17 views

Garbled SSH packets, garbled HTML packets, but not in all situations

I am having a very strange problem with lost headers on packets when trying to contact a guest VM. I have bare metal running CentOS 7 and VirtualBox v.5.0.14. I then have a guest running Ubuntu 15.10 ...
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76 views

Random SSH connection timeout on first try to CentOS servers

Have got a curious issue with SSH on CentOS 6 and haven't found a solution yet. We have our CentOS 6 servers all joined to an Active Directory 2012 R2 domain using Winbind. It is not used for ...
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0answers
64 views

Cannot connect to remote MySQL server (RDS)

When I am trying to connect to RDS from my vps, it says connection refused. When I tried connecting it from local or other vps, it worked fine. I figured out that it must be a firewall issue on my ...
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0answers
27 views

Rate Limit for users in exim

I tried to put a limit of sending messages, based on users who are placed in a text file, using the following ACL: acl_check_limit: deny authenticated = * message = Lo sentimos, ha agotado el ...
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0answers
60 views

Read only file system after every reboot - centos

Some time ago I got disk full problem and after that everytime I reboot my centos server, the system loads with read only system files. Running mount -o remount,rw / will solve my problem. But ...
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0answers
53 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
68 views

yum halts after installing 7 packages on centos container

I was curious about containers, so decided to give it a try. Prepared a server as host with a fresh install of CentOS 7, installed lxc and lxc-templates and configured a bridge interface. I've ...
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0answers
28 views

ESX 6 arp fails in back 2 back link

we are having a strange problem with back 2 back connection between an ESX 6 and CentOS 7 machine. Hoping to find a solution on stackoverflow The story is below: - we are using a CentOS 7 directly ...
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30 views

Postfix STARTTSL works in LAN but not from external (centos 7)

if I connect in LAN on port 25 to my mailserver it offers STARTTLS telnet mailserver.com 25 Trying 192.168.0.x... Connected to mailserver.com Escape character is '^]'. 220 mailserver.com ESMTP ...
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0answers
18 views

Site farm server with multiple users - best aproach

I am buliding kind a hosting server for static sites, and i am wondering is it better and for what reasons to: 1) use linux users ( i dont need ssh or something advanced function, there is only ...
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88 views

Bacula: Writing backup fails

I installed bacula 7 on Cent OS 7 according to this howto: ...
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0answers
42 views

Apache using all cpu and cause OOM killer

I have an Xen-VPS CentOS 6.5 64 Bit with 2GB memory and 4 GB Ram, I have application with php, in my application lot of pages need to image which generated by php_imagick extension, here is apache ...
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43 views

XEN VPS wrong memory?

I ordered a VPS on XEN platform with 1 GB of memory. CentOS 6.6 uname -a Linux vps 2.6.32-504.23.4.el6.x86_64 #1 SMP Tue Jun 9 20:57:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux I checked the ...
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0answers
32 views

Puppet device wildcard names for nodes?

I'm using Puppet's device management to mange some Cisco devices. Right now my device.conf looks like this: [someCity] type cisco url telnet://puppet:123456@10.123.1.1/ [someOtherCity] type cisco ...
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0answers
102 views

Hyper-V CentOS 7 guest has no keyboard in recovery modes

I am working with CentOS 7 as a Generation 2 guest on Hyper-V 2012 R2. Everything runs fine, but I am unable to control the guest when I boot it into certain systemd targets. For instance, if I were ...
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0answers
207 views

Unable to start MySQL on CentOS

I've just installed a fresh version of MySQL on my CentOS machine. The problem I'm facing is that when I run this command: # service mysqld start I get in the console this error message: ...
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0answers
26 views

Apache HTTP returns cryptic error messages

(Apache 2.4 / centOS 7) I am trying to start httpd service, following the following commands: [root@localhost ~]# service httpd start Redirecting to /bin/systemctl start httpd.service Job for ...
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0answers
16 views

SAMBA shared folder creation for the users on Integrated Active Directory setup

I have a centos SAMBA server integrated with AD. All the users from AD will have a home folder in the SAMBA Server. The home folder is created whenever the user try to access the SAMBA Server. Now I ...
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0answers
68 views

Postfix cannot start but dovecot is ok

My postfix service cannot start. Here is message: Job for postfix.service failed. See 'systemctl status postfix.service' and 'journalctl -xn' for details. And here is service status: ...
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0answers
20 views

NFS export for non-root users

I need non-root users to be able to export folders over NFS on a shared system. There are a lot of users, several hundred, who may potentially log into the system. All of them should be able to ...
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0answers
36 views

Request tracker v4 in CentOS 6.2 returned 74

I have installed the RT v4 in CentOS and I have this message: Nov 11 20:57:54 ticket RTmailer: CALL msmtp -nt -oi -t RETURNED 74 If I run "msmpt" command from the shell it works fine. ...
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0answers
30 views

Installing a Library on Centos Server

We have one NIS server in our lab and want to install Blas library on it. We have one Master computer, one file server computer, and 13 clusters and all are using Centos. My question is how can we do ...
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0answers
81 views

Glusterd won't start after node crash

We had a 2 node cluster running GlusterFS. It's a 4 volume cluster, replica 2, one brick per server. Dead server: nnfs02 Live server with all data: nnfs03 New server: nnfs01 After nnfs02 died, we ...
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0answers
24 views

Lock Home Folder down for specific users (CENT OS)

I am running multiple users on my VPS with CentOS 7 64 bit. And, I want to be able to lock down their home directory. I want them to be able to access all sub folders in that home directory but not be ...
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0answers
45 views

HHVM doesn't start and no error message

I've installed HHVM 3.2 on Centos 6.5. And also installed mod_fastcgi. But when I try to start hhvm nothing happens. I don't see any error message. I have to press ctrl + c to interrupt. Where can I ...
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0answers
46 views

Spacewalk: How to create system groups in new Orginization?

I am building a new Spacewalk server (running on CentOS7) based on the configuration of our current one. The current one is far out of date and the pxe boot is broken so I want to start fresh. That ...
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0answers
257 views

docker 1.8 command mkdir fails when running demo python app

I ran this as root. The only different thing about my install is, I changed the docker dir to /opt/docker in /etc/sysconfig/docker. /opt is formatted with xfs. Kernel is 2.6.32-573.3.1.el6.x86_64. OS ...
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523 views

Centos AD Authentication with SSSD, How to add Samba Shares

I've been trying to get this to work reliable for some time. Heres the breakdown: Centos 7 with SSSD auth to Active Directory (fully functional) here is the sssd.conf file: [sssd] domains = example ...
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0answers
73 views

Simple bug on Apache 2.4 or CentOS

I am dealing for days with this problem and it happens that I got to the conclusion it has to be a bug... unfortunatelly. I hope that with your expertise I can know for sure if it's a bug on Apache, ...