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290 views

USER_LOGIN audit log with incorrect auid value?

We have a CentOS 6.2 x86_64 system that's logging what looks to be erroneous audit information. We were receiving alerts for failed logins by a user who wasn't actually trying to log in. After some ...
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747 views

Fence device for RHEL cluster node on vmware workstation

I have a host with Windows 7. I installed VMware Workstation where I have installed two virtual machines. Each virtual machine is a rhel 6.2 node running clustersuite. Do you know which fence device ...
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85 views

Coldfusion installer succeeds, but with no /bin/ directory

I've just tried reinstalling a CF9 server, but the installer finishes with "11 NonFatalErrors", and there is no /cf-root/bin directory. This means I can't run /cf-root/bin/coldfusion start so I can't ...
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312 views

WERR_ACCESS_DENIED - While rebooting Windows with Linux over LAN

We recently lost one of our Windows 2K8 servers while switching from Static to DHCP after a DHCP release command was inadvertently called. The server was still active but we were no longer aware of ...
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576 views

Apache randomly fails to restart (port 80 in use) .. Probably cron related?

So this started happening for no apparent reason on a RHEL5 server running Plesk 10. I woke up one morning to find all the sites hosted on this box were offline. I SSH'd in and restarted httpd - ...
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439 views

Kickstart PXE Boot Installation not working

I tried installing PXE Boot Installation Server on RHEL 6.0. I seem to have done everything according to the page: http://www.linux-sxs.org/internet_serving/pxeboot.html. In my case, the client ...
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653 views

init 5 kdump fail

Whenever I do a init 5 runlevel. The System goes like this.. Starting portreserve: [ ok ] Starting irqbalance: [ ok ] Starting kdump: [FAILED] ...
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373 views

Large Number of ACPI Interrupts

I'm wondering if anyone has seen this before, and could perhaps shed some light on a solution. I'm running Red Hat Enterprise Linux 6.1, fully updated in a text-only server configuration, and the ...
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590 views

Likewise fails to create Home Directory in RedHat 6

It could be that I am missing something simple. But I can’t determine why users authenticated via AD are not getting home directories. I’ve looked at the documentation and tried to discover an error ...
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611 views

Multicast Default Interface - upgrade to RH5.5

I have upgraded a server from RH4 -> RH5.5 and we have an interesting issue with multicast. we have multiple NICS on the server, we want the bond0 to default as the default interface. adding route ...
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133 views

Reset Active Directory Passwords Using RHEL6

Does anyone know of a way to reset Active Directory Passwords through RHEL6 or Ubuntu 10.04LTS so that the Active Directory user can still access network resources with their AD account. Also, is ...
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190 views

Why would a diskless boot linux box stop seeing local hard drives?

A little background... I work on a system that uses PXE booting for the majority of the nodes. Several of these nodes have local hard drives that are used for persistent storage of data needed for ...
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21 views

cron job time managment

I have cron job A and B (both jobs run every minute) from 9.00AM to 6.00PM I like to make the second one run after the first one in 30 second.both cron job should be run by root user. for example if ...
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14 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 ...
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24 views

Utility to list and modify kernel modules loaded during system startup

How do I list all kernel modules loaded while system startup? Is there a user space utility to list and modify the modules loaded during system startup? I am working on RHEL6 Desktop and RHEL6 ...
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20 views

Openswan malfunction since update

For security reasons i performed and update from a previous version of openswan to U2.6.32/K2.6.18-194.el5 (netkey) Since that moment i've been experiencing constant tunnel drops, i've checked the ...
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39 views

Yum Cache Service

I have a LAN where I currently use an instance of Sonatype Nexus to proxy several yum repositories. All the clients on the LAN are configured to install packages only from this service. The only ...
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0answers
44 views

E5-2667V3 or E5-2640V3 for HP BL460c Gen9 and Oracle Linux 6 + Oracle 12c

We are currently designing a new shared environment (2-4 nodes cluster) which will have: HP BL460c Gen9; OEL 6.6; Oracle 12c database on Oracle Grid infrastructure (with ASM). The plan is to have 8-10 ...
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45 views

install Bootstrap redhat linux

I am trying to install Bootstrap on my redhat linux box on AWS. First I installed node following this tutorial git clone https://github.com/joyent/node.git cd node #Try checking nodejs.org for ...
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7 views

winetricks donet20 installing frozen

I try to install Microsoft .NET Framework 2.0 with the winetricks tools on RHEL 5.11 Each times I've this log PasteBin I'm using this command: env WINEARCH=win32 WINEPREFIX=~/.wine32 ./winetricks ...
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38 views

Execute a script while boot up in RHEL7

One of my server reboots every sunday and monday morning, whenever the server is up I need to do a service restart. Actually I call a script to execute itself (everytime manually). What I want to ...
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44 views

(OpenShift) Permission denied when installing my own cartridge from my github repository

I froked MySQL cartridge from official github repo and I added some modifications to support utf8mb4 encoding. this is my cartiridge on github : ...
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55 views

Emails stopped being sent by server all of a sudden

I am not really a Linux admin (mostly focused on Windows) but we do have one WebServer that runs Red Hat 6. This server has a web app that runs on ColdFusion 10 (Update 14). I generally just login to ...
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32 views

Check Filesystem of Root Volume (Amazon Linux / RHEL)

How can I check the file system (and repair potential errors) of the root EBS volume (/dev/xvda1) of an Amazon AWS T2 instance? The instance runs the latest version of Amazon Linux (RHEL). Is it ...
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42 views

RedHat ntp offset becomes bigger over time

I have a strange issue with a server. It is configured to use 2 servers, just like all the other server (the config is the same for a couple of server and they are all working except this one) and it ...
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88 views

systemd-journald: Received request to flush runtime journal from PID 1

I'm using RHEL7 on Amazon EC2 and I'm experiencing issue while booting it up. last few entries from log are: [ 93.000775] systemd-journald[413]: Received request to flush runtime journal from PID ...
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83 views

Starting a second tomcat instance with a user other than root on redhat linux

I am running RHEL Server 6.1 After intalling tomcat6 using yum install tomcat6, I needed a different tomcat instance on the same server. Following instructions on ...
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113 views

RedHat Yum Install Errors (PHP Module)

All, I am trying to use yum to install a PHP module which I expected to take all of five minutes... After quite a bit more than that I am stumped. Yum is throwing an error about a dependency missing ...
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18 views

What is the default behavior when a RHEL 6.x DHCP client fails to renew its address?

I have had experience with some RHEL 6 servers that were found unreachable, and investigation of the console revealed that they had failed to renew their IP address, and eth0 was without an IP. There ...
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41 views

RHEL 5 with PHP 5.1.6 VS RHEL 6 with PHP 5.3.3: Security implications

Using only the RHEL Repositories, RHEL 5 considers PHP 5.1.6 to be up to date, and RHEL 6 considers PHP 5.3.3 to be up to date. My question is: Are security updates/patches backported so that 5.1.6 ...
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40 views

GDM PostLogin Scripting from GDM Session

Does anyone know a way to determine what session has been selected at the GDM window in the PostLogin script section of the GDM login process? The situation I'm dealing with - some of my users want ...
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54 views

Is there a way to alter default mount options for the xfs filesystem?

Q1. Is there a way to alter default mount options for the xfs filesystem? E.g. for ext2/3/4 it is done in /etc/mke2fs.conf file. Q2. Also is there a way to see default mount option on the mounted xfs ...
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110 views

Kerberos and SSH login

I've just configured a RHEL 7 for windows authentication (idmap_ad). Every check works but if i try to ssh with a domain user i get the error: Connection closed by ::1 Here follows the ssh log in ...
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71 views

network trouble with hp bl465c g7 and rhel6.5

I have an HP BL465c g7 that worked fine with RHEL6.3. After upgrading to 6.5 the network stopped working. Can ping itself but no the gateway or anywhere else. IPtables are clear, eth-tool reports a ...
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67 views

emails are coming from localhost instead of php sendmail_from

I'm trying to understand what I'm missing here. I have following PHP script: <?php ini_set('sendmail_from','XXX@XXX.TLD'); mail('YYY@YYY.TLD',rand(),rand()); ?> ... and even though I set ...
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78 views

NFS clients seeing stale state

I have a server exporting partition as: /data/foo *.example.com(rw,sync,all_squash,anonuid=502,anongid=502,subtree_check) ... and client mounting it as: myhost:/data/foo /home/myuser/foo ...
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0answers
60 views

Why can't some user accounts access certain remote ports?

I am trying to troubleshoot a couple issues on RHEL 6.5 that seem related. In both cases, a user on a machine (seperate machines) cannot access a service (seperate services) on a remote machine. In ...
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0answers
410 views

Yum does not install specific RPM version with custom repo

We use RPMS for our packaging and yum to update our environments. We have an rpm package-5.1.1-3 installed in our production server and in our yum repository we have 2 newer versions such as ...
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0answers
65 views

Red Hat Network API connection

I'm creating a perl script that connects to the RHN, however I seem to be struggling. The code I have is this: #!/usr/bin/perl use Frontier::Client; my $HOST = 'xmlrpc.rhn.redhat.com'; my $client ...
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0answers
239 views

Advertising security type 18 (VNC)

I am connecting to a Red Hat Miapo via VNC (well at least trying to) and I am getting some weird errors. From the VNC Viewer (Windows) I receive the error: "unable to connect to VNC server using your ...
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0answers
44 views

VNC with RedHat 7.0

I am having troubles with VNC for connection to RH 7.0 from W7. My connection cannot be established as the connection times out every time. I am unfamiliar with the RH 7 GUI and cannot seem to find ...
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0answers
68 views

Cassandra hangs with kernel exception when adding jna jar to classpath

I have a fresh installation of cassandra v2.0.8 on a RedHat Enterprise Linux v5. I have added a sym link of the jna.jar in cassandra's /lib folder. I start cassandra and it hangs after printing out ...
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0answers
105 views

routing based on source IP

I am trying to do source-based routing, following the question http://unix.stackexchange.com/questions/131527/routing-based-on-source-ip. The source IP floating one and assigned to a cluster ...
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0answers
93 views

How to build the rpm package with SHA-256 checksum for files?

In standard alone RHEL 6.4 rpm build environment, the rpm packages is generated with SHA-256 check sum, which is gotten by command rpm -qp --dump xxx.rpm [user@redhat64 abc]$ rpm -qp --dump ...
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145 views

Red Hat 6.5 - Login Errors After Security Hardening

I followed the information below, however, it is strangely blocking me from entering a password upon entering the login prompt on the server: To configure the system to lock out accounts after a ...
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0answers
316 views

RHEL7 RC, why isnt /etc/sysconfig/static-routes active after reboot? But it is after 'service network restart'?

I just started to port our auto provision system (chef scripts etc) on RHEL 7RC. But something isnt working as expected, I suspect systemd is the culprit. So we have some default static routes in ...
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0answers
374 views

GlusterFS issues - volume heal static info split-brain : FAILED

I have been having these GlusteFS problems ever since I started monitoring this. Any idea how this can be fixed? [2014-05-07 09:50:02.511879] : volume heal static info split-brain : FAILED : ...
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0answers
2k views

Stuck at grub prompt after a default CentOS 6 installation

I am having a very strange problem installing CentOS 6 that I've never encountered before. I've followed these same steps thousands of times before, but within the past couple weeks I've had two ...
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0answers
82 views

when and how to appropriately use /proc/sys/vm/drop_caches

You can clear page cache with /proc/sys/vm/drop_caches. Can someone provide a practical explanation of how this works, when as a sysadmin you would want to do this, how to determine if your system ...
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0answers
43 views

floating ip issues redhat

my public floating ip is not accessable through internet.I am buliding an lvs system where 202.141.81.242 is the floating ip and 202.141.81.241 is the real ip of the machine.I can ping 202.141.81.241 ...