Red Hat is an open source technology solutions provider with offerings including Red Hat Enterprise Linux, open source applications, security and systems management, virtualization, Services Oriented Architecture (SOA) solutions, server and desktop operating systems, Java application software and ...

learn more… | top users | synonyms (1)

0
votes
1answer
146 views

nfs autofs automount of exported filesystems is empty on nfs server

I am having issues with empty nfs automounts on the nfs server itself. I'm running RHEL5.7 64bit exporting 4 directories as follows: /export/site/server13 *(fsid=0,rw,sync,crossmnt) ...
-1
votes
2answers
47 views

Postfix Configuration files

Kindly find your help on th below :) I am about to install postfix 2.10.2 on my RHEL server 5.9 I'll do this via source code. I need to reconfigure paths in main.cf, Example: /etc/postfix -> ...
0
votes
2answers
88 views

KVM Network configuration + VLAN trunck

I am trying to set up a KVM Based solution, I am having trouble configuring the NICs for the VMs from a bridge based on a VLAN interface. My config below : ETH0 : KVM Host Management : ...
0
votes
3answers
136 views

Centos multiple NICs routing issue

I am having trouble setting up permenant routes for my network interfaces, below my config : ETH0 : 172.23.137.27 Netmask /25 - 255.255.255.128 Gateway – 192.168.126.126 ETH1 : Trunk VLAN - ...
0
votes
1answer
24 views

Logging not getting disabled

Out Tomcat 8 is logging so much so that by the evening the catalina.out inflates to GBs of data. I followed the procedure given on the tomcat website to replace JULI logging with LOG4J. Now LOG4J has ...
-1
votes
1answer
25 views

steps to setup portforwarding [closed]

I have a java process running on a server[SlaveServer]. I like to attach java debugger on a certain port say 19999.The problem is the server isnt directly reachable from my local pc . Below is how i ...
2
votes
1answer
100 views

Interrupts are confined to only CPU0 Core why?

Why interrupts are confined to CPU0, rather than using other cores that are available? Only for LOC: I could see the interrupts being distributed to other cores why it's not happening for eth0 and ...
1
vote
1answer
452 views

How do ProFTPD/centOS handle directory permissions for virtual ftp users?

On proftpd/centos I configure the use of virtual user. I can login as a virtual user but I do not have write permission for this users. The proftpd.conf looks like: ServerName ...
1
vote
0answers
69 views

Red Hat Virtualization, slow DB writes or network from virtual machine

I am running JBoss on both a physical machine, and a VM that runs within that same physical machine. The JBoss instance on physical machine is operating fast, but the JBoss on VM is slow (several ...
1
vote
1answer
600 views

Linux Kernel complaining about TSC when selected clock source is Hyper V

We are running RHEL 6 boxes on HyperV with Windows Server 2012. On a few on our RHEL boxes, I am seeing this error in /var/log/messages kernel: Clocksource tsc unstable (delta = -62519781 ns). ...
1
vote
1answer
247 views

Shutdown error on CentOS 6.5

On a KVM host, after gracefully shutting down the guest KVM, I get: [root@kvm]# /sbin/shutdown -h now Broadcast message from vmadmin@kvm.mattermedia.com (/dev/pts/1) at 15:23 ... The system ...
0
votes
0answers
35 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 ...
1
vote
2answers
438 views

HP ProLiant DL380e Gen8 server - SPP use

I am planning to install Oracle Linux 6.4 on an HP ProLiant DL380e Gen8 server. I have been advised to use Service Pack for Proliant SSP DVD to install/update the missing utilities drivers for Oracle ...
0
votes
0answers
92 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 ...
0
votes
2answers
620 views

iptables configuration for docker containers

I am using Docker 0.7.0 to create containers on RedHat Enterprise Linux 6.5. When firewall is turned off containers can talk to outside world, but when firewall is on, container cannot be accessed ...
5
votes
2answers
536 views

SElinux: allow httpd to connect to a specific port

My system is running CentOS 6.4 with apache2.2.15. SElinux is enforcing and I'm trying to connect to a local instance of redis through my python/wsgi app. I get Error 13, Permission denied. I could ...
1
vote
1answer
61 views

What are the most optimal permissions for /bin/su?

I want users to be able to use "sudo su -", but not to switch user by password. What are the most optimal permissions for /bin/su? Right now it's: -rwsr-xr-x. 1 root root 42436 Jul 26 18:19 /bin/su ...
2
votes
1answer
382 views

clvmd problems during the RHEV cluster deployment

We are deploying Red Hat Enterprise Virtualization cluster and we faced a problem attempting to start clvmd service after the lvm partition creating. The following has been completed successfully: ...
10
votes
2answers
203 views

Name resolution difference between CentOS and Debian

I have a small Java program that loops calling InetAddress.getByName("example.com") every second. When I run it on a CentOS 6.4 box using 'strace -f' I see that /etc/resolv.conf is opened and read ...
1
vote
0answers
44 views

Backup RHEL 5 Web Server Disk and DB Data to USB Drive, Best Way to do this?

We are using a dedicated web server with Redhat Enterprise Linux 5 installed, we are using this to host a couple of our websites. We asked our host to attach an external USB hard drive to our server ...
2
votes
2answers
109 views

Exactly how much is backported into RHEL [qemu-kvm specifically]? Only security patches, or perfomance improvments too?

https://access.redhat.com/site/security/updates/backporting/?sc_cid=3093 http://froginapan.blogspot.com/2012/07/redhats-backporting-activity.html As the above two links suggest, only security patches ...
4
votes
2answers
424 views

Avoid file conflict in rpm package

I have created a rpm package.The part of .spec file is below %install mkdir -p ${RPM_BUILD_ROOT}/etc/xyz cp -rf %{BDIR}/console ${RPM_BUILD_ROOT}/etc/xyz %files /etc/xyz/console So XYZ ...
-1
votes
2answers
49 views

How to find out all installed software in our RedHat Enterprise 5 server? [duplicate]

We're moving servers and I need to make a list of all software installed in our server so we could install it too in the new one we'll get. Current server details: Redhat Enterprise Linux 5 Using ...
0
votes
0answers
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 ...
1
vote
2answers
59 views

OEL fresh install while keeping old LogVols

I've been asked to install OEL 5.x on a server and setup a disk with a few directories (there's only one disk in the server). So I have an OEL 5.x server wtih multiple log volumes in a volume group: ...
0
votes
0answers
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 ...
3
votes
2answers
140 views

I see a dot after -rwxr-xr-x

Whenever I issue ls -al command in my server I see a dot after -rwxr-xr-x like - -rwxr-xr-x. Can anyone tell me what that means? I can't get any clue from the internet.
0
votes
3answers
246 views

still “httpd dead but subsys locked” even following the fix of some source

Here is what I have tried so far: edit: /etc/sysconfig/httpd PIDFILE=/var/run/httpd.pid edit: /etc/httpd/conf/httpd.conf PidFile /var/run/httpd.pid then killall -9 httpd result: httpd: no ...
0
votes
1answer
332 views

What is the function of the cimserver daemon?

I noticed in /var/log/messsages a process 'cimserver' was logging some interesting messages: Nov 27 15:33:37 lb-web-standby cimserver[2250]: Failed to deliver an indication: Cannot connect to ...
0
votes
0answers
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. ...
4
votes
1answer
100 views

Why would Puppet exclude a file resource without error?

The oddest thing is happening during this Puppet run (using Puppet Apply) and it has me perplexed. I've tried my usual channels to find solutions but I cannot find anything on the topic. I apologize ...
1
vote
2answers
2k views

How to set up a pacemaker cluster for active/active scenario and how it works?

I try to set up my first pacemaker cluster as a FTP Server. There are two Server installed with a fresh centos 6.5 and proftpd First step was to install pacemaker and some configuration Tools with: ...
0
votes
0answers
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 ...
0
votes
0answers
103 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. ...
2
votes
1answer
81 views

Cannot install net-tools on Red Hat Linux

The isolated networking lab is running Red Hat Linux 9 (Shrike). We still use this "ancient" release, because given the simplicity of the protocols examined, it is sufficient. In addition, because of ...
0
votes
1answer
100 views

Using TCP protocol for NFS mount points on linux servers

I'm trying to use TCP protocol for better performance for NFS mounts but currently /proc/mounts says its using TCP protocol? does that mean NFS is already using TCP by default? nfs v3: ...
0
votes
2answers
132 views

starting Standalone LDAP Daemon, slapd

I am following THIS guide to install an ldap server. At step 9 i use: /usr/local/libexec/slapd instead of: su root -c /usr/local/libexec/slapd since i dont have access to su I get this ...
0
votes
1answer
2k views

NTP local query always times out

I have a CentOS 6.4 server, it does not have any iptable rules, it runs NTP daemon as service using the following configuration: driftfile /var/lib/ntp/drift server 0.pool.ntp.org server ...
2
votes
2answers
312 views

Increasing nproc on CentOS/RHEL

I have a problem where mysqld runs out of threads and throws errors when under heavy load. I have traced this back to a problem where the pid seems to be limited a soft limit of 1024 processes (have ...
0
votes
0answers
63 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 ...
1
vote
1answer
81 views

Why does wget from ftp-sites sometimes create a few empty files when it downloads the rest of the files without problems?

I have downloaded 80.000+ image files stored on a FTP-site using wget(1) and most of the files where downloaded without problems but when I did a small check (using file(1)) I just realized that a few ...
0
votes
0answers
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 ...
0
votes
1answer
262 views

(Un)able to create bootable USB disk with Red Hat Enterprise Linux 6 installation DVD

I'm trying to create bootable USB disk with Red Hat Enterprise Linux 6 installation DVD: [alexus@wcmisdlin02 Downloads]$ sudo dd if=rhel-workstation-6.5-x86_64-dvd.iso of=/dev/sdc [sudo] password for ...
1
vote
0answers
57 views

Red Hat Enterprise Linux 4 - free -m shows high memory used in second line but no process actually uses memory

I have a Red Hat Enterprise Linux. I understand that top can show high memory usage, which is fine. free -m shows below output: $ free -m total used free shared ...
0
votes
0answers
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) ...
0
votes
2answers
1k views

Install Tomcat7 on EC2

I'm trying to install Tomcat7 on an Amazon EC2 instance, but it doesn't work. Below is the console output: [ec2-user@ip-XXX ~]$ sudo yum install tomcat7 Loaded plugins: amazon-id, rhui-lb, security ...
0
votes
2answers
125 views

Issues using Amazon SES as relay with sendmail [530 Must issue a STARTTLS command first]

I'm trying to get our old rhel3 servers relaying out with sendmail 8.13.1 I have followed amazon's guide here: http://docs.aws.amazon.com/ses/latest/DeveloperGuide/sendmail.html But it seems the ...
2
votes
2answers
91 views

Redhat init script on startup

I installed Redhat 6.4 and created a new init script which updates a project using SVN. I then configured the script in chkconfig. The problem is everytime i restart the server i lose ssh ...
0
votes
2answers
76 views

RedHat 5.4 Monitor File For Changes [closed]

How can I monitor when a file is changed, and specifically who changed it (or perhaps what cron job changed it) on a RedHat machine without installing additional software? I am a system admin for the ...
0
votes
0answers
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. ...