Ship RHEL 6 or CentOS6 syslogs

Reference more for myself than for y'all, but you get the shared benefit.

To ship the logs from RHEL6 or Centos 6 to a remote syslog server, edit the following file: /etc/rsyslog.conf


At the bottom of the file, remove the comment from the remote-host entry, and update with your server name or IP. Example:
*.* @@192.168.40.15:514

Restart the rsyslog service:
service rsyslog restart

Make sure you are receiving the logs at your syslog server.

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Dustin Shaw
VCP

Install VMware Tools on RHEL 6 or CentOS 6

Below is the process to install VMware Tools on RHEL 6 or CentOS 6. This guide is more here for me than anyone else, but I hope that you can benefit from it.


Install the Pre-Requisites:
yum install make gcc kernel-devel kernel-headers glibc-headers perl


Start the VMware Tools installation process on your VM:





Mount the VMware Tools installation media:
mkdir /mnt/cd
mount /dev/cdrom /mnt/cd
Expected warning:
mount: block device /dev/sr0 is write-protected, mounting read-only


Extract the installer:
cp /mnt/cd/VMwareTools-9.0.10-1481436.tar.gz /tmp/
umount /mnt/cd
cd /tmp
tar xvf VMwareTools-9.0.10-1481436.tar.gz
cd vmware-tools-distrib/


Install tools (accepting all defaults):
sudo ./vmware-install.pl -d

Reboot the VM to verify that the service starts up automatically as expected.
shutdown -r now


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Dustin Shaw
VCP

Extend a volume in RedHat 6 or CentOS 6

To extend a partition on a VM on CentOS 6 or RHEL 6, do the following:

Extend the Partition in vSphere to the size that you need:

in the VM, refresh the Partition Tables by the following command:

echo 1 > /sys/block/sda/device/rescan
Run fdisk to create a new primary partition:

fdisk /dev/sda

Press p to print the number of partitions
Press n to create a new primary patition
Press p for primary
The partition number should automatically be selected, and press enter twice to accept the beginning and ending blocks on the free space.
Press w to write the changes.

Reboot the system: shutdown -r now

Verify that the new partition exists:
fdisk -l

Convert the new partition to a physical volume:
pvcreate /dev/sda3
Extend the Physical Volume (run vgdisplay to obtain the name of the Volume Group; default is VolGroup00):
vgextend VolGroup00 /dev/sda3

Extend the Logical Volume (run vgdisplay to obtain the free space and replace # below, and lvdisplay to obtain the name of the Logical Volume; default is /dev/VolGroup00/LogVol00)
lvextend -L+#G /dev/VolGroup00/LogVol00

Expand the ext3 online using the following command (substituting your proper Volume Group and Logical Volume names):
resize2fs /dev/VolGroup00/LogVol00

Confirm that your new space is available:
df -h



This was written using VMware's KB article on the subject as a reference.

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Dustin Shaw
VCP