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5
votes
1answer
2k views

How do I migrate from RHEL 5 to CentOS 5?

I've found myself in charge of installing some software on an old server running RHEL 5. Unfortunately, since it's just a development server now, it no longer rates a license. I'd like to continue ...
4
votes
2answers
200 views

Switching yum from RHEL to .. something else? [duplicate]

My various managers have decided that it's too expensive to keep paying for a subscription to the RedHat network for OS updates. Is it possible to switch to Fedora/CentOS or do I need to reinstall the ...
2
votes
1answer
107 views

yum client doesn't see new packages though server is updated

We have an internal yum server containing several repos (copies of the RHEL repo, programs created in-house, and so on). Our internal systems are firewalled off from the internet, so they can only use ...
31
votes
5answers
4k views

How do admins maintain user accounts across hundreds of linux servers?

Dealing with hundreds of RHEL servers, how can we maintain local root accounts and network user accounts? Is there an active directory type solution that manages these from a central location?
3
votes
1answer
111 views

Windows NTP server with Linux clients

Has anyone got any experience syncing Linux (specifically Red Hat) to a Windows NTP server? Currently our Windows server is syncing to an stratum 1 server on the internet but the Linux boxes refuse to ...
0
votes
0answers
125 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 ...
2
votes
2answers
170 views

Mod Perl on RHEL 7

I for the life of me can not find the mod_perl package for RHEL 7. There is no package remotely called mod_perl, and google does not help. I am trying to get Redmine Git Hosting setup, but I need to ...
0
votes
0answers
34 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 ...
1
vote
0answers
57 views

Unusually high nfs_inode_cache

My server is experiencing a high usage of nfs_inode_cache = 11G , im trying to figure out what's consuming all this , i know already that directories with large numbers of entries and deep directory ...
0
votes
1answer
41 views

How do I force sftp user to start in their home directory

I am using RHEL6 and I set up an sftp server through sshd. Here is the relevant sshd config: Match Group sftpusers ChrootDirectory /sftp/%u ForceCommand internal-sftp X11Forwarding no ...
15
votes
4answers
1k views

Common wisdom about Active Directory authentication for Linux Servers?

What is the common wisdom in 2014 about Active Directory authentication/integration for Linux servers and modern Windows Server operating systems (CentOS/RHEL-focused)? Over the years since my first ...
3
votes
2answers
43 views

Changing GRUB configuration to “single” not working in RHEL

I am using RHEL 5.10. I have mistakenly deleted /etc/passwd file in my server (though I have the backup). I'm just trying to get into single user mode by typing single at the end of the kernel line ...
6
votes
5answers
4k views

Red Hat server minimal install

In a farm of virtualized Red Hat servers, there's the need to install a minimal system for security reasons. Minimal installs have several advantages (even no security related): Less exposure to ...
0
votes
1answer
64 views

httpd (WordPress) gets avc denied write (SELinux)

I'm getting following message in my /var/log/audit/audit.log: type=AVC msg=audit(1402615093.053:68): avc: denied { write } for pid=799 comm="httpd" name="php" dev="xvda1" ino=8667365 ...
2
votes
1answer
69 views

Varnish SMS allocation request generate HTTP 503

Sometimes my application return a HTTP 503 error to a client. The only clue I have is that when it happen, Cacti reports a peak of Varnish SMS Allocation requests. After some research I may have ...
1
vote
5answers
886 views

CentOS Installation on a Cisco MCS 7800

I'm having some problems installing CentOS 5.5 Final (i386) onto my server, a Cisco MCS 7800. The problem comes very early into the installation. When the welcome screen comes up and gives you the ...
1
vote
2answers
1k 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 ...
0
votes
1answer
23 views

Transfer files with extended attributes: Redhat to Redhat

I need to transfer files with extended attributes from my local system (SL 6.5) to a remote server (Centos 5.6). However, both scp and rsync are dropping the attributes, so I'm having to manually ...
0
votes
1answer
531 views

Any experiences of installing LinuxStandardBase / LSB on RHEL6?

I have some commercial software that's expecting me to install LSB on my RHEL6 (actually SL6) system. The problem is that this computer is meant to be a clean RHEL6 system, so that I can test my own ...
1
vote
4answers
97 views

How to restore a backup from a tgz file in linux

How can i restore from a backup.tgz file generated from another linux server on my own server? I tried the command the following command: tar xvpfz backup.tgz -C / The above command worked, but it ...
5
votes
3answers
2k views

Getting NFS clients to retry mount if NFS server down when client boots

I have an NFS server that several clients mount. I am using the following in my /etc/exports on the server: /content *(rw,no_root_squash) and on the clients in my /etc/fstab I have: ...
3
votes
1answer
83 views

Need 32 Bit Apache on Red Hat 6.5 64bit

I have a Red Hat 6.5 Enterprise Server which is 64 bit. I have a 3rd party package that I use for Web Services that is an add-on to Apache Web Server. This package is 32 bit so I need to have a 32 bit ...
0
votes
0answers
32 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 ...
0
votes
0answers
30 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 ...
1
vote
2answers
4k views

Kickstart virtual console: No 'Shell prompt' at Alt-F2

I am installing Scientific Linux 6.1 via kickstart, and I am trying to debug a problem. According to Tips and tricks for anaconda and kickstart, I should have several virtual consoles available: ...
12
votes
6answers
8k views

Automatically check for Security Updates on CentOS or Scientific Linux?

We have machines running RedHat-based distros such as CentOS or Scientific Linux. We want the systems to automatically notify us if there are any known vulnerabilities to the installed packages. ...
2
votes
2answers
38 views

YUM, “patchlevel” and the DTAP street on redhat/centos

Is there a way to make yum update to a certain patchlevel? I always promise my devs the servers between Dev, Test, Acc and Prod are the same with versions of software. But when u use yum via the ...
0
votes
1answer
213 views

relay to external network smtp server using sendmail as mta

I am banging my head on desk for this. My linux system is on local network where as my smtp server is on different network. Is there any way that I can relay mails from my local machine to this remote ...
1
vote
1answer
987 views

How do I correctly SSH port forward using LiveReload on Redhat?

Referencing this page: http://feedback.livereload.com/knowledgebase/articles/86280-if-you-edit-files-directly-on-your-server It says you can remotely port forward the LiveReload specific port of ...
0
votes
0answers
49 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 ...
0
votes
1answer
32 views

lvresize: command not found - RedHat

No search results on google for this. So i am really confused now. I am trying to increase the swap space and lvresize says command not found. Please Help !! using RedHat 64bit
0
votes
1answer
70 views

CentOS default never fsck root partition on start up?

Most documentation or sites will say use "tune2fs -l " to check if the system will do fsck on the system partitions on next boot, in particular, should look at "Mount count" and "Maximum mount count" ...
0
votes
1answer
63 views

VNC server installed or not in redhat linux - please read the lines below

[root@cpsc-server VNCInstallable]# ls VNC-Server-5.1.1-Linux-x64.rpm VNC-Viewer-5.1.1-Linux-x64.rpm [root@cpsc-server VNCInstallable]# rpm -e VNC-Server-5.1.1-Linux-x64.rpm **error: package ...
9
votes
3answers
16k views

Sending audit logs to SYSLOG server

I'm running several RHEL based systems which utilize the audit functionality within the 2.6 kernel to track user activity and I need to have these logs sent to centralized SYSLOG servers for ...
4
votes
2answers
4k views

How to solve call trace produced by security_ops_task_setrlimit() with bind

I have a machine with CentOS 5.9 and VMware installed. Currently I am using BIND 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.6 (default shipped with distribution). When I restart the machine, I can see this ...
0
votes
4answers
52 views

redhat find all packages installed locally

So far I have a list of explicit packages that are installed with yum. The server has some of its own developed software which would not be from a repo, it would be moved and then installed locally. ...
0
votes
1answer
43 views

dovecot rhel 5 installation fails because of newer libraries

to whom it may respond to, we are trying to install dovecot (dovecot-2.2.10-1_14.el5.x86_64) on a RHEL 5.4 server and we get the error : [root@asgfkm /]# rpm -i dovecot-2.1.17-0_136.el5.x86_64.rpm ...
15
votes
3answers
11k views

Open source alternative for Canonical Landscape? [closed]

From Canonical: Landscape is an easy-to-use systems management and monitoring service that enables you to manage multiple Ubuntu machines as easily as one through a simple Web-based ...
0
votes
1answer
97 views

Resizing Partitions on Live RHEL/cPanel Server

I've resized many partitions over the years on Linux, Windows and Mac OS X -- but always using a GUI. However, the time has come where the preset partition sizes my data center placed on my server ...
1
vote
3answers
224 views

Best option for storage clustering

I'm working on an application that requires a large amount of storage space and I want to handle storage 'in-house' (Much cheaper than, say, S3) so we will have multiple servers (Initially 4) with ...
-1
votes
1answer
71 views

RHEL boot partition size during auto-installation

We are installing some servers with same RHEL image. During the installation, all but one, have got no problem and had boot partition in size of 250M. The one server, after the installation has ...
0
votes
1answer
116 views

Multiple python versions under apache+mod_wsgi

I have several virtual hosts configured under the same apache instance on redhat: apache-2.2.15 mod_wsgi-3.5 compiled with default system python-2.6 For every virtual host WSGIScriptAlias setting ...
0
votes
1answer
30 views

Is there a max length to java_opts arguments on a tomcat process

We have a tomcat startup script with a java_opts that contains a fairly lengthy (around 14 hosts) entry for -Dhttp.nonProxyHosts, I've noticed that although tomcat appears to start properly, entries ...
0
votes
1answer
122 views

Users Password does not reset after successful login at the console but works fine with SSH

The title says it all. I have my unsuccessful login attempts set to three. I purposefully fail logging in 2x, then when I SSH into the box successfully the 3rd time my count drops back to zero; ...
2
votes
1answer
43 views

pam_tally2 causing unwanted lockouts with SCOM or Nervecenter

We use pam_tally2 in our system-auth config file which works fine for users. With services such as SCOM or Nervecenter it causes lockouts. Same behavior on RHEL5 and RHEL6 This is ...
4
votes
3answers
5k views

second ip address on the same interface but on a different subnet

Is it possible in CentOS 5.7 64bit to have a second IP address on one interface (eg. eth0) - alias interface configuration - in a different subnet? Here is the original config for eth0 more ...
1
vote
1answer
76 views

Installing OpenSSL that supports SNI along with previous version of OpenSSL

So I learned that to host multiple HTTPS websites on the same IP address you need an OpenSSL version that supports SNI (0.9.8f and higher). My RHEL5 box currently has 0.9.8e and Apache version ...
0
votes
0answers
81 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 ...
1
vote
0answers
55 views

Red Hat 6.5- sysctl -w net.ipv6.conf.default.accept_redirects=0

I am in the process of writing a Red Hat 6.5 Kickstart disc with hardened security. I have run a program to determine where the weaknesses are in my system, and apparently there is a medium severity ...
0
votes
1answer
212 views

CentOS/Redhat: Systemwide aliases when logging in through LDAP/sssd

I've asked this question in the Centos Support forum, but we didn't found a solution for it (https://www.centos.org/forums/viewtopic.php?f=13&t=46101#p196728) When logging in through LDAP/sssd, ...