Linux Patching In Real Time Work Environment

Linux Patching In Real Time Work Environment

                                                                                     

Step1:

Take backup of all previoues Configuration, Like uptime ,date,version,FileSystem,LVM's,Memory info,network info,etc....

[root@bsrtech ~]# uptime; date >> /tmp/patch.date; date; cat /etc/redhat-release; uname -a; df -hPT; cat /etc/fstab; pvscan; lvscan; multipath -l; cat /proc/scsi/scsi; cat /etc/exports; lspci; free -g; ifconfig -a; cat /proc/net/bonding/bond0; netstat -rn;

(Note : In above command take all outputs in /tmp/patch.date file)

Step2:

Check macros file in rpm directory

/etc/rpm/macros (Per-system customizations)

[root@bsrtech ~]# cat /etc/rpm/macros

%_repackage_all_erasures 1 //create if non-existent

Step3:

Now Check yum.conf configuration file

/etc/yum.conf

[root@bsrtech ~]# cat /etc/yum.conf

[main]

cachedir=/export/errata

keepcache=0

debuglevel=2

logfile=/var/log/yum.log

exactarch=1

obsoletes=1

gpgcheck=1

plugins=1

installonly_limit=3

tsflags=repackage ///this line should have in /etc/yum.conf

[ref_64]

name=BSR Tech Hosting Reference System RHEL 6 64-bit

gpgcheck=0

enabled=1

baseurl=http://192.168.2.98/6_64_ref/

http://192.168.2.99/6_64_ref/

[root@bsrtech ~]#

Note: In above File " tsflags=repackage" is enabled and will be effective for every new update you install. You’ll notice a new action named “Repackage” before the usual “Updating” stage is shown.

Step4:

Clean all reposotories

[root@bsrtech ~]# yum clean all

Step5:

Before update the Server, Check for available updates

[root@bsrtech ~]# yum check-update

Step6:

Now update the Server means Patching the given Server using "yum update" command

[root@bsrtech ~]# yum update -y

Step7:

After Update reboot the Server for apply latest patches

[root@bsrtech ~]# shutdown -rf now (or) # init 6

Note :

Before reboot: comment external FileSystems (Dont commnet OS-related and NAS Files systems)

After Reboot: Uncoment External Filesystems

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