Q. Can you tell me how do I patch and update everything on my Redhat Enterprise Linux server 5?
A. Both RHEL 5 and CentOS 5 use yum command, which is an interactive, automated update program which can be used for maintaining systems using rpm.
To upgrade server and apply all security patches, pass update option to yum command. It will update every currently installed package. If one or more packages are specified, Yum will only update the listed packages. While updating packages, yum will ensure that all dependencies are satisfied. If no package matches the given package name(s), they are assumed to be a shell glob and any matches are then installed.
Task: Redhat / CentOS upgrade server and apply all security patches
In short type the following command, as the root user:
# yum update
OR if sudo is configured:
$ sudo yum update
Sample output:
Loading "rhnplugin" plugin Loading "installonlyn" plugin Setting up Update Process Setting up repositories rhel-x86_64-server-vt-5 100% |=========================| 1.2 kB 00:00 rhel-x86_64-server-5 100% |=========================| 1.2 kB 00:00 Reading repository metadata in from local files Resolving Dependencies --> Populating transaction set with selected packages. Please wait. ---> Package kernel-devel.x86_64 0:2.6.18-8.1.8.el5 set to be installed ---> Package kernel-headers.x86_64 0:2.6.18-8.1.8.el5 set to be updated ---> Package kernel.x86_64 0:2.6.18-8.1.8.el5 set to be installed --> Running transaction check --> Populating transaction set with selected packages. Please wait. ---> Package kernel-devel.x86_64 0:2.6.18-8.el5 set to be erased ---> Package kernel.x86_64 0:2.6.18-8.el5 set to be erased --> Running transaction check Dependencies Resolved ============================================================================= Package Arch Version Repository Size ============================================================================= Installing: kernel x86_64 2.6.18-8.1.8.el5 rhel-x86_64-server-5 14 M kernel-devel x86_64 2.6.18-8.1.8.el5 rhel-x86_64-server-5 4.7 M Updating: kernel-headers x86_64 2.6.18-8.1.8.el5 rhel-x86_64-server-5 762 k Removing: kernel x86_64 2.6.18-8.el5 installed 72 M kernel-devel x86_64 2.6.18-8.el5 installed 15 M Transaction Summary ============================================================================= Install 2 Package(s) Update 1 Package(s) Remove 2 Package(s) Total download size: 20 M Is this ok [y/N]: y Downloading Packages: (1/3): kernel-devel-2.6.1 100% |=========================| 4.7 MB 00:04 (2/3): kernel-headers-2.6 100% |=========================| 762 kB 00:00 (3/3): kernel-2.6.18-8.1. 100% |=========================| 14 MB 00:12 Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing: kernel-devel ######################### [1/6] Updating : kernel-headers ######################### [2/6] Installing: kernel ######################### [3/6] Cleanup : kernel-headers ######################### [4/6] Cleanup : kernel-devel ######################### [5/6] Cleanup : kernel ######################### [6/6] Removed: kernel.x86_64 0:2.6.18-8.el5 kernel-devel.x86_64 0:2.6.18-8.el5 Installed: kernel.x86_64 0:2.6.18-8.1.8.el5 kernel-devel.x86_64 0:2.6.18-8.1.8.el5 Updated: kernel-headers.x86_64 0:2.6.18-8.1.8.el5 Complete!
A note for RHEL 4 user
You need to use up2date command:
# up2date -u
Featured Articles:
- 20 Linux System Monitoring Tools Every SysAdmin Should Know
- 20 Linux Server Hardening Security Tips
- My 10 UNIX Command Line Mistakes
- Linux: 20 Iptables Examples For New SysAdmins
- 25 PHP Security Best Practices For Sys Admins
- The Novice Guide To Buying A Linux Laptop
- 10 Greatest Open Source Software Of 2009
- Top 5 Email Client For Linux, Mac OS X, and Windows Users
- Top 20 OpenSSH Server Best Security Practices
- Top 10 Open Source Web-Based Project Management Software
- Top 5 Linux Video Editor Software
Facebook it - Tweet it - Print it -
{ 16 comments… read them below or add one }
Does one need to reboot the machine after kernel update in Centos 5?
I use “uname -a”, it shows the server is on latest kernel without rebooting.
Does one need to change grub.conf?
You need to reboot the system after kernel upgrade no need to make any changes to grub.conf.
I rebooted. The server was able to start.
Thank you so much.
sudo yum update doesnot work.
[root@localhost ~]# sudo yum update
Loading “list-data” plugin
Loading “downloadonly” plugin
Loading “basearchonly” plugin
Loading “kmod” plugin
Loading “priorities” plugin
Loading “aliases” plugin
Loading “refresh-updatesd” plugin
Loading “allowdowngrade” plugin
Loading “protect-packages” plugin
Loading “changelog” plugin
Loading “filter-data” plugin
Loading “merge-conf” plugin
Loading “protectbase” plugin
Loading “tsflags” plugin
Loading “security” plugin
Loading “skip-broken” plugin
Loading “kernel-module” plugin
Loading “upgrade-helper” plugin
Loading “fastestmirror” plugin
Loading mirror speeds from cached hostfile
* livna: mirrors.tummy.com
* update: centosf.centos.org
* base: centosf.centos.org
* addons: centosq3.centos.org
* extras: mirrors.kernel.org
0 packages excluded due to repository priority protections
Skipping filters plugin, no data
0 packages excluded due to repository protections
Skipping security plugin, no data
Setting up Update Process
No Packages marked for Update
You do not have any updates available. Please read the last line of your output.
Hiiiiiiiiiiiiiii
Where can i download the Development tools for centos5?
i need to install yum gcc……
Thanks in advance!
what option do I need to provide to go thru proxy server to run yum update?
TIA
Thanks for this. Worked perfectly!
Is there a way of getting just security updates (say for CentOS 5.3) without upgrading to 5.4? In Ubuntu the difference would be between ‘upgrade’ and ‘dist-upgrade’.
Thanks in advance,
Tim.
See this faq
Many thanks… Hero points in the mail :)
please upload the updates
it is in /var/cache/yum/new-key updates
hey there!
i’m new to red hat. i have red hat linux 5 enterprise edition.
how can i update and install the softwares in it for instance: if i wish to install vlc player
how can it be done.
How to create patch management server in linux open source
When i use the Yum command to update the packages… it gives the following results..
as i want to keep the system up 2 date from othere free repository.. Plz help me configre that thing plzzzzzzzzz
Thankyou sir…
[root@srvredhat5]# yum update
Loading “rhnplugin” plugin
Loading “installonlyn” plugin
This system is not registered with RHN.
RHN support will be disabled.
Setting up Update Process
Setting up repositories
Reading repository metadata in from local files
Resolving Dependencies
–> Populating transaction set with selected packages. Please wait.
—> Package rpmforge-release.i386 0:0.5.2-2.el5.rf set to be updated
—> Package perl-Date-Manip.noarch 0:5.56-1.el5.rf set to be updated
—> Package flash-plugin.i386 0:11.0.1.152-0.1.el5.rf set to be updated
–> Running transaction check
–> Processing Dependency: libnss3.so(NSS_3.12) for package: flash-plugin
–> Processing Dependency: libnssutil3.so for package: flash-plugin
–> Finished Dependency Resolution
Error: Missing Dependency: libnss3.so(NSS_3.12) is needed by package flash-plugin
Error: Missing Dependency: libnssutil3.so is needed by package flash-plugin