Playing with puppet vol V - provisioning centos machines

Today I'll try to setup provisioning of centos machines. I'll boot netinstall iso, install system via kickstart and setup system with puppet.

Playing with puppet vol IV - Centos 6

Previously I've been playing with resources on Centos 7. Now I'll try to apply these resources on Centos 6.

Playing with puppet vol III - resources

Today's puppet blog will be about resources. What kind of resources are out there, how to define them and how to set relationship between them. I'll use same setup as in the previous post.

Using fallocate instead of dd for creating empty files

I've been always using dd for empty disk image creation (for new virtual machine for example). But I've found out a better tool. It called fallocate.

Playing with puppet vol II - module

In the previous post I have installed puppet using master/agent architecture. Today I'm not expecting puppet to do more work. I want it to do the same job but witch much better way. And that's what modules are for.

Playing with puppet

In last couple of days I've been playing with puppet a lot. In today's post I'll describe howto install and configure puppet using agent/master architecture. Used OS is Centos 7.

Udev as alternative for ASMlib in virtual Centos 6

I was trying to setup RAC in virtual environment. My virtual machines are Centos 6.5. Unfortunatelly there is no kmod-oracleasm for default kernel 2.6.32-431. To be completelly true, there is required kernel module, but it is only available for redhat subscribers. There I will describe how to use udev instead of asmlib.

Simulating long distance network in Data Guard environment

I was curious about Oracle Data Guard over long distance with synchronous redo transfer. In this mode session waits on commit until redo is written on standby site. When standby is far far away, most time is spent on waiting for redo write acknowledgement. I will show it in today's post.

Use docker search over proxy on Centos 7

I was playing with docker little bit. After while I found out that I'm unable to interact with docker hub registry. Of course it is proxy. Again.

Add Oracle database related services to firewalld

I was setting up data guard environment on Centos 7 machine for testing purposes. Usually I disable iptables firewall at first, but this time firewall stays on and I'll make all necessary holes into it.