TechFiz on December 10th, 2009

Virtual Ethernet devices of the OpenVZ VM’s inside ProxMox is connected to a bridge. After installing ProxMox and creating virtual nodes, I found that public ips allocated inside VM’s were not reachable to world.
A quick fix for this issue is to ensure that Proxy ARP and IP Forwarding is configured fine.
Check these lines:
# ifconfig vzbr0 [...]

Continue reading about Fix:Unable to ping veth device on proxmox

TechFiz on November 26th, 2009

To reset the password of postgres user follow the instructions given below.
First change the password of system user postgres:

# passwd postgres
Changing password for user postgres.
New UNIX password:
Retype new UNIX password:
passwd: all authentication tokens updated successfully.
Now, its time to change the password of postgres user in database.
Login as postgres user at console
#su postgres
Now enter the [...]

Continue reading about Reset postgres user password in PostgreSQL server

TechFiz on November 15th, 2009

Still running some old boxes on Redhat 9? Here is a way to get it upgraded.
Caution: Try this at your own risk
Before proceeding, make sure all your hardware is supported by your chosen target OS
Upgrade Red Hat 9 to CentOS 3.x:

1. Make a full backup of all your data
2. Import GPG Keys: rpm –import http://mirror.centos.org/centos/3.4/os/i386/RPM-GPG-KEY-CentOS-3. Install/Upgrade [...]

Continue reading about Upgrading Redhat 9 to CentOS 3.x/CentOS 4.x

If you’re new to work  with PostgreSQL, surely you will come across this issue while logging into postgres via psql command.
# psql -U postgres  postgres
psql: FATAL:  Ident authentication failed for user “postgres”
You might have installed PostgreSQL freshly. Reading through its configuration documentation might through some light on resolving this issue. First check and confirm that [...]

Continue reading about psql: FATAL: Ident authentication failed for user “postgres”

TechFiz on November 6th, 2009

You might have been searching for instructions to reinstall grub after upgrading or reinstalling Windows on your systems to get your Ubuntu booting once again. Here are the steps.

Boot to the 9.10 Karmic LiveCD Desktop.
Open a terminal - Applications, Accessories, Terminal.
Determine your normal system partition – (the switch is a lowercase “L”) sudo fdisk -l

If you aren’t [...]

Continue reading about Reinstaling GRUB using Ubuntu 9.10

TechFiz on November 4th, 2009

Many of you might be wondering why I started posting Kannada blog posts here on Platonic. Sorry about that. I was just playing around with my blog to see how I can keep a copy of my Kannada posts here on a separate page. But it took a while to find quick solutions.
Anyways, now you [...]

Continue reading about Simply Exclude Wordpress Plugin