Red Hat Enterprise Linux (RHEL) is a commercially supported Linux distribution.

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Using a VPN client as a VPN gateway

I would like host 1 to use host 2 as a gateway to the remote host 3. I have scoured the web looking for a solution, but it doesn't seem to work for me. VPN client software is ike (shrewSoft VPN) is ...
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60 views

How to set one job to run at precise time with anacron without losing config at next upgrade?

I want logrotate to run at a precise time daily. Currently it is set to run at some random time using anacron and I don't want to change the randomness factor for all the other jobs. I have ...
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210 views

Creating Self signed certificate for tomcat 6

I am trying to configure self signed certificate for our tomcat server. For that initially I created the keystore certificate file using keytool . The command I tried for this is keytool -genkey ...
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134 views

Utilizing Samba Shares Without using Winbind

I am curious if it is possible to use samba shares without using winbind. In our current environment we are using SSSD, Kerberos, and Samba to complete the required tasks such as joining the windows ...
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157 views

File of Doom freezes any computer that attempts interaction

I have a file on an internal server that causes any machine that interacts with it to immediately and irrecoverably freeze. By interaction, I mean just about anything: rm, mv, cp, cat, vi, gedit, ...
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125 views

Generating Email alert for events in system log

How to generate email alert for every critical event logged in system log /var/log/messages. Suppose, for the following log message, I want an email alert to be generated. Oct 24 11:17:42 eforms ...
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488 views

Using autofs to mount a NFS share

I am trying to setup a RHEL 7 machine with an autofs NFS mount (the NFS mount is a Windows 2012 R2 server running Services for NFS). Here are the contents of /etc/auto.master: /nfs /etc/auto.nfs ...
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306 views

RHEL 6.1 yum hangs on “Updating Red Hat repositories.”

I just registered my RHEL 6.1 system using rhn_register. However, when I try to run any "yum" command, it gets stuck on "Updating Red Hat repositories" and never does anything. BTW I can run this ...
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203 views

How are network and SCSI kernel modules handled differently from other kernel modules?

I used modprobe to load the 8021q.ko module on a server. I expected to have to do this every time the server rebooted until I made it persistent. However, to my surprise, it was loaded automatically ...
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337 views

Yum or Reposync: How can I slowly remove a repository without unintended dependency issues?

I have used reposync to create and maintain local copies of two repositories, remi and remi-test. These are repositories maintained by Remi Collet. On several systems in an internal LAN, I added both ...
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167 views

MongoDB “service” on clean Redhat can not be started

I just bring up Redhat 6.5 64-bit from AWS and did the below things: Disabled SELinux Disabled Iptables All ports opened in Security Group Rebooted Then i just followed, both of the below ...
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103 views

Kexec immediately after Kickstart install (where is cmdline?)

I used to be able to kexec into a new kernel immediately after a kickstart (anaconda) install via pxe. I was able to do this by figuring out the current kernel version, and grabbing cmdline options ...
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452 views

How to configure a “point-to-point” connection with RedHat 6.5?

My servers are hosted at Hetzner and I need to create a point-to-point connection to my gateway. The server can only reach its gateway (and its locally configured) IP addresses directly. All other ...
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61 views

PCI-e SSD - Not visible to sysstat's iostat or sar

I am attempting to get basic statistics during test runs on a server with a PCI-e attached SSD that is mounted on /dev/rssda1, however sar and other sysstat either do not log, or in the case of iostat ...
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514 views

External VGA monitor port not working on HP Elitebook 2540p running RHEL 6.5

I'm running RHEL 6.5 on an HP EliteBook 2540p. When I connect the external VGA port to a projector or external monitor and press Fn+F3 to switch to the external port, nothing happens. Under System ...
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313 views

Installation from USB fails

I have a pretty old Ubuntu 8.04 machine. The machine doesn't have a DVD reader/writer in it. Challenge: Now, the challenge I am facing is to install RHEL6 in this machine. Obstacle 1: I needed to ...
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4k views

Error: iptables: No chain/target/match by that name

I am trying to configure proxy server on RHEL Server 6.5 using Squid and iptables. Below is the command I executed and the error message it displayed: vzlptest01 root [root] > iptables -A INPUT -i ...
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832 views

How do I set my samba share to allow guest users to view all folders and sub folders, including new and old

I currently have a samba share set up on RHEL, that allows any user to write to the root folder. I'm unable to write to the sub folders/files. I have run: chcon -R -t samba_share_t ...
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38 views

Can a RHEL 6.4 DS sync with a CentOS 5.4 DS

I have two CentOS 5.4 Directory Servers that sync information on a daily bases. I'm wanting to replace them with two RHEL 6.4 Directory Servers. Before the existing two are decommissioned all four ...
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41 views

(nologin) root and id X re-spawning

Today I faced a strange issue on one of the test server. Server was set to Runlevel 5. But it didnt work and system changed to runlevel 3. It was showing "init: Id "x" respawning too fast: disabled ...
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3k views

Kernel panic not syncing : Attempted to kill init

OEL 5.9 (Tikanga) 2.6.18-371.6.1.0.1.el5 On boot I get the following errors: ... exec of init (/sbin/init) failed!!!: No such file of directory Kernel panic - not syncing - Attempted to ...
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245 views

How to disable PAE feature of kernel, after installation?

I am using RHEL 5.3(x86) as a base platform for my development purpose.My machine's spec is as follows: Intel, Core-i3 Processor @ 2.5GHz 4GB RAM Problem is whenever I am attempting to install the ...
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729 views

system boot appears in last but not in /var/log/messages

I am looking after a Red Hat Enterprise Linux 5.4 server. A user sent me a copy of the output from the last command and it shows multiple reboots on different days (there is no visible pattern to the ...
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121 views

SNMPV3 traps are not being captured correctly

I have configured master agent (snmpd.conf/snmptrapd.conf) of SNMPv5.5 on RHEL6.3 server to support SNMPV3 traps, but when I try to generate a snmptrap and capture the trace through tcpdump, I still ...
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241 views

How to get back a lost session in RHEL : Using NoMachine

I logged in remotely to RHEL using NoMachine. Suddenly it got stuck and I have to close the NoMachine client. When I logged in again using NoMachine I can't see the old session (I can't see same ...
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417 views

Service httpd is failing to start - fcgid can't create shared memory

I'm not sure why, but when I try to start the httpd service, it will not start. Server config: OS: CentOS 5.10 PHP: 5.5.7 Apache: 2.2.3 I built mod_fcgid from source, put it into the ...
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297 views

Listing previous logins through sftp

Hello people of the stackexchange, I am having a little difficulty trying to find a location of a particular log file which i'm hoping someone on here could help me with. What i am trying to do is ...
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46 views

Send big data with dsmigratedata command

I want send data to remote server using this command but I dont know what is the syntax is that I can use for this command... I'm using the command: $ dsmigratedate -s user@remoteip -p 22 password ...
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278 views

How different is I/O handling of hard disk in AIX and Redhat Linux?

I am running a hadoop I/O workload in redhat linux and have ran that in IBM AIX as well with same underlying hardware, disk and disk configuration. With the default settings on the os redhat linux is ...
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155 views

RHEL6 LDAP client not listing all the groups

Using sssd I have a RHEL6 client configured to login using LDAPS. The login works, but if the user logged in is assigned to more than 1 group at the LDAP level, groups only returns 1 group? Could I ...
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136 views

Identifying MaxSpeed of a Bonded Interface

I have configured Ethernet Bonding for our RHEL 6.2 Servers. Bonding is working fine but few confusion for me when I configured MRTG to monitor the bonded interface. MRTG is showing MaxSpeed of the ...
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195 views

after enabling Xinerama (in AMD condor Dual-Head Graphics Card) the system graphics hangs

I have a problem in my AMD Condor Dual-Head Graphics Card When I enable Xinerama from "System → Preferences → AMD Catalyst Control center (Administrative)" my RHEL Server 6.3 (x64) Graphics hangs. ...
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1k views

Can't ping first IP with dual NICs on different subnets with multiple gateways

I have two NICs assigned to a server. eth0 - 10.199.10.0/24 w/ a GW of 10.199.10.1 eth1 - 10.199.20.0/24 w/ a GW of 10.199.20.1 From my desktop, I can ping the IP assigned to each NIC just fine ...
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534 views

Negative hdd usage. Available is larger than fullsize

Having issues with space accounting of lvm volume. 23G is available. But the full size of the partition is 20G. (So, it shows "-4.1G used" 0_O) > df -h Filesystem Size Used Avail Use% ...
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225 views

not all initrd.img's are born equal?

I am trying to get a Red Hat 5.8 box booting via pxe. The box is a virtual machine on ESX5.0 it has a Paravirtual SCSI Controller and VMXNET3 network driver. Now these drivers do not come default in ...
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539 views

RHN Satellite scout won't push

My RHN Satellite (Spacewalk) server is having issues with monitoring. The Spacewalk Monitor Scout will not push out successfully. It always stops with a Request Expired status. I can't seem to find ...
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1k views

iptables not starting up

I have inherited a custom built Linux kernel 2.6.30.9 and am just upgrading the underlying OS from RHEL 5.4 to 5.8 (kernels 2.6.18.164 and 2.6.18.308 respectively). When booting, the following is ...
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119 views

How to recover a multiboot configuration after having installed Windows 7?

I've installed Windows 7 and XP on my laptop. After that, I installed RedHat 5. Now the problem is that I'm not able to load my RedHat. What should be done to fix this problem?
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101 views

Some of the users login screen do not display colors

In my lab I have Redhat Enterprise Linux 5 server. Users log in through telnet for C programming Some of the users' login screens display colors, while some other users login screen do not ...
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644 views

Can't make a copy of /var/lib/mysql/ibdata1

I have a RedHat Linux server and I'm trying to make a copy of /var/lib/mysql/ibdata1, but I'm receiving an error saying permission denied and the file cannot be opened. I'm logged in as root user and ...
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224 views

Flash drive not working on a particular RHEL machine

I have a 32 Gib flash drive. The first time I copied files to it, it failed with a write error and the drive was no longer recognized by the server. I ran a scan on it using Windows chkdsk, which ...
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7 views

Google map api and rhel proxy server

I have a RHEL virtual server that connects to our corporate environment via a proxy server. Using a Google Map API from my desktop, which sits within the corporate environment, retrieves data ...
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3 views

Command Samba Mount with Multiple Users

Samba share from server is mounted on my RHEL 7 system via root user. RHEL 7 system have a few non-root users(e.g user1,user2 and so on). Users (user1 and user2) can create, modify and delete the ...
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20 views

How can I gracefully power down an old PCI system

I have an old PCI server with that has three RHEL 6.5 segments, and I have yet to find a way to power the system down properly. I tried both halt and poweroff and they bring the entire system down. I ...
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30 views

Service in RHEL server stops working after a while

I have a RHEL 6 server running with several services (I mean, I have made the server scripts and the programs they run). I have a problem with two of them. I will try to explain the problem and then ...
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12 views

Cannot start Acronis MMS server

I have a problem with my Acronis on my linux When a try to start ./acronis_mms start Starting Acronis MMS: [ OK ] but when I want verify if this service ...
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42 views

Is there a way to use epel and local yum together

I am using RHEL7. If I do a fresh install of RHEL7(with connected internet) and then installing epel rpm. All the packages are getting installed after that. But then few packages have dependencies ...
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8 views

Rsyslog not creating dynamic directories

I have Red Hat Enterprise Linux Server release 6.5 running rsyslogd 5.8.10 I'm trying to collect logs from a remote client (VM1) and I have the following line configured if $inputname == 'imudp' ...
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18 views

rsync : fixing Permission denied error with no rwx permission

We can see that one of our rsync jobs is failing with the following error rsync: opendir "/share/resources/0731402367/docs/quick-check/answers" failed: Permission denied (13) rsync: opendir ...
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24 views

stop while booting giving error of Genetrating “/run/initramfs/rdsosreport.txt”

I am getting following error while booting my centos 7 machine Generating "/run/initramfs/rdsosreport.txt" Entering emergency mode. Exit the shell to continue. Type "journalctl" to view system logs. ...