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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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131 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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185 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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25 views

RESOLVED: yum says mod_cluster is installed, but the files are not there

RHEL 6.5 + JBoss EAP 6. I installed JBoss EAP 6 from the RHEL repos using grouinstall: # yum groupinstall "JBoss EAP 6" This seems to have worked fine except that the files for mod_cluster are not ...
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10 views

Updating to GIT 2.0.1

I had installed git 2.0.1 compiled from source. It worked well. # cd git-2.0.1 # make prefix=/usr/local/git all # make prefix=/usr/local/git install # echo "export PATH=$PATH:/usr/local/git/bin" ...
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26 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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49 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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25 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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5 views

lvm mirror doesn't resync the logical volulme

I trying to restore one lvm mirror using the old metadata, for restore the config i'm using the command vgcfgrestore -f redhat vgmirror but after the restore of the old metadata, the resync ...
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50 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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27 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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17 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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25 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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32 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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50 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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161 views

SSH hangs after authentication

When logging in to one of my servers over ssh, it just hangs after authentication. This is the output on the client with -v. OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008 debug1: Reading ...
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109 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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99 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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436 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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47 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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26 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 ...
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27 views

Directory Listing Denied Message

Understand that this is the common error for a missing index.* in the location being pointed to by Apache, however I know it to be the case that there is an index.php in the location specified as the ...
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18 views

iscsiadm - how to disconnect from one of several connections to same target

I have a RHEL 5.x server with multiple connections to the same SAN (different targets). I'm consolidating some of the storage and want to disconnect one of the connections. I have unmounted the ...
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98 views

pam_tally2 being called before Password entry

Based on the suggestion given in: Account Lockout with pam_tally2 in RHEL6 I have come to a working configuration, wherein account is getting locked out after 3 failed logins. Catch is that ...
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90 views

Multiple networks in Openstack Grizzly (Neutron)

I am deploying a PoC/demo on CentOS 6.5. I want to have multiple external networks. The end result should be something like: The 3 networks are come in through a Cisco switch. For various reasons I ...
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430 views

Connecting to MSSQL server using sqlcmd and odbc driver on RHEL 6 fails

I spent the last hour trying to connect to a mssql server using sqlcmd through odbc driver. I was talking to the db guy but he doesn't seem to have a clue what is going on.. Maybe you can help me out ...
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254 views

dmar: DRHD: handling fault status reg Errors in /var/log/messages

We have One HP Enclosure Gen8 and this server on Bay11 is giving alot of these messages and one second it drops connections and other second it start working. Rest of servers in this enclosure are ...
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65 views

How can I view CentOS update RPM security metadata?

I'm interested in getting useful output from the commands on this page while using CentOS: http://www.cyberciti.biz/faq/redhat-fedora-centos-linux-yum-installs-security-updates/ By default, it seems ...
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80 views

Writing vsftpd logs to a database

I found this useful post relating this topic: http://www.supertom.com/code/vsftpd_mysql_syslog_configuration.html Unfortunately it is not a tutorial but kind of a notepad for the author. After some ...
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217 views

Detect Fibre Attached Tape Drive in Red Hat Linux

I am running Red Hat Linux 6.4 and I have one Fibre Attached Tape Drive which is not visible to the OS. I also have the WWPN of the tape drive. The server has two Qlogic HBA Card with two port each. ...
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22 views

What accounts does clamav use on different Linux distros

I'm trying to fix a problem in a Chef recipe for installing / configuring ClamAV which is caused by the recipe using the wrong default user/group name for the clam service account on some platforms. ...
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26 views

Which files are updated when I use gdmsetup to configure remote XDMCP?

I am configuring my RHEL 5.6 box to use XDMCP and following some pretty straightforward instructions to do this using gdmsetup. XDMCP seems to be working just fine but my problem is I need to be able ...
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51 views

rpm dependency failed to install, package installed anyway

I have this issue and I would like to understand why it is like this. I have build 3 really simple rpm packages called a, b and c, and I made a independant, b depending on a and c depending on a and ...
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49 views

Postfix/Dovecot Service

I have installed Postfix 2.10.2/Dovecot 2.2.5 on RHEL 5.9 from a source code, I forced Installation to be in my own directories not Defaults, I need to add Postfix/Dovecot under services or init.d to ...
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50 views

openvpn doesnt start due to iptables and mangle (VMware)

I have installed openvpnas on redhat5.10 via the package from openvpn. When I start the server it will start the webserver for administration but it wont start the the openvpn service. So I did my ...
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36 views

CPU graph in Munin showing 0.00 utilization

Munin Server installed on Redhat 5.6 is connected to one the Windows Server is showing CPU graph 0.00. I checked on Munin Server and find no problem. Not even permission error. Im sure CPU utilization ...
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93 views

Speeding up Winbind group lookups?

I have an RHEL 6 server bound to an AD domain. Everything works fine but group lookups are extremely slow. Some lookups can take over 60 seconds. This is very painful when running sudo and when users ...
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40 views

Installation of JavaScript runtime on old Red Hat server

I've been tasked with some infrastructure updates related to upgrading to Rails 3 on our development server, which is running: Red Hat Enterprise Linux AS release 4 (Nahant Update 5) RPM version ...
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80 views

Installing Upstart on Centos 5.10 Final… pkg-config dependency issue

I am trying to install upstart version 1.11 from source on a Centos 5.10 Final box. BTW i don't have option or privileges to upgrade this. I am at this point where it is complaining about the ...
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100 views

Getting Odd Errors Starting the NRPE Daemon via the service command

So, odd issue. I'm running CentOS 6.5 x64, and NRPE latest stable from EPEL. Ran into an issue where I can only start nrpe via service (which is what chkconfig uses) by running it sh first. ie. ...
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27 views

CentOS how to assign hostname from DHCP

I would like to know if it is possible to assign system hostname from DHCP directly, without the need to edit /etc/sysconfig/network or add the name to /etc/hosts or execute hostname "vm name". Thank ...
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106 views

Can connect to LDAP server, but cannot bind: OpenLdap error message: Can't contact LDAP server

We have a PHP application deployed on a RHEL6 machine that relies on some ldap calls to function. In particular, ldap_connect and ldap_bind are used to verify users and also to look up their details. ...
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64 views

Use wildcards in logmatch entries in net-snmp

I want to monitor the number of events that some log files are generate. So, I found that I can use the logmatch directive of net-snmp. I have the following entries: logmatch TotalEntries ...
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34 views

Safely move CUPS spool directory

For scaling purposes we need to move the spool directory from cups from one partition to another on some hosts. To keep the same configuration files across the whole pool of servers, we'll replace ...
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60 views

Redhat 6.1 LVS (DR) over private subnet

I am trying to run LVS on RHEL 6.1, but with traffic from the routers to the real servers over a private subnet. with direct routing (behold this drawing: http://i.stack.imgur.com/aJ22w.png) ...
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36 views

Keepalived process not listening to advertisement

I have a keeplived setup working on RHEL 5.5 working file. Below is strace of keepalived master, which is reading advertisements off the network and sends its advertisement to the network. ...
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49 views

netstat ? Huge buffer build-up

we are seeing the following: The netstat line which shows the buildup: 10:51:34|tcp 4294967258 0 192.20.1.228:53824 192.20.1.228:2500 ESTABLISHED The netstat command used to generate the ...
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130 views

Apache Performance Tuning - Apache HTTP Server

I'm using Apache HTTP Server Project (2.2.X) and I'd like to attempt to do some performance tuning. # cat /etc/redhat-release Red Hat Enterprise Linux Server release 6.4 (Santiago) # uname -a Linux ...
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48 views

Running GDM without local X server

I would like to run a linux server without starting its X server. Indeed, it will be always accessed with a X terminal (e.g. Xming), i.e. the X server runs on client's machine. I have not been able ...
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27 views

logrotate by size outside the daily schedule

We have a couple of applications that generate huge log files. It's not enough to rotate those logs daily, so I created the following logrotate conf: /var/log/ourapp/*log { compress copytruncate ...