I am using Ubuntu Server 12.04.04 LTS that I have migrated from VMWare ESXi to Hyper-V. Microsoft has supplied the Linux community with Linux Integration Components (LIC) that provide additional support for Ubuntu Linux.
Integration services are built in modules that need to be added to startup. To add them edit the modules file:
append the following modules to the file:
Now, update initramfs:
sudo update-initramfs –u
and now reboot.
Upon reboot, you should see the modules with lsmod.
Over the past week I have been flexing my monitoring skills again. Of course the landscape has changed since I worked on this a few years ago. Today, I am struggling with a commercial product, unnamed. Bloated, expensive, horrible GUI, and time consuming. I am sure it is a good product given that you have an entire staff dedicated to managing it.
So, I went back to my roots and set up an Icinga instance. I have it fully working on a Linux box monitoring Windows hosts. Agentless. No more nsclient installs. I am using check_wmi_plus plugin for everything Windows. You can supply a wmi query string to the plugin for anything WMI. Here are some URLs:
some service definitions:
I am also monitoring out Java infrastructure. You need to make sure the java app is set up for remote jmx monitoring before this will work.
and some nice service defs and commands:
Maybe I will get some time to write up a comprehensive faq.
using ctrl+r to replay a command from history 🙂
with tab completion
Installing Oracle Java on Ubuntu can be a pretty daunting task. After reading the Ubuntu documentation here:
I came across this nice github project:
git clone https://github.com/flexiondotorg/oab-java6.git
Then cd into oab-java6 and run
This will set up a local apt repository for Sun Java 6 and Oracle Java 7. Now run
sudo apt-get update
to add the packages from the repository. As the documentation states, you can now run
sudo apt-get install sun-java6-jre
To install Java 6 runtime environment.
One small thing to note:
I had to run
sudo update-alternatives --config java
and select the Sun JRE since the system defaulted to IcedTea.
to see what you have!
I came across this today . A nice, all in one “dashboard” for (maybe)all things in the web development world.
A colleague of mine sent this article to me on why we as devops/webops need to blog. It is a good read.
5 Reasons Why DevOps Should Blog
“By writing we carefully sift through our own thought processes to break it down for novices, or a broader audience. This is a learning process for us, too. It’s therapeutic. But it also hones our message and makes us better teachers. We literally learn by doing.”
I recently installed Pentaho DI 4.4.1. I was previously using PDI 3.2. Transferring my ETL’s to the new PDI installation resulted in this error message (truncated).
Error connecting to database [mysql] : org.pentaho.di.core.exception.KettleDatabaseException:
Error occured while trying to connect to the database
Exception while loading class
Digging around, the full error can be found here:
Exception while loading class mysql.Driver
The answer is provided in the Jira ticket. You need to download and install the MySQL JDBC connector which can be found here:
I am using the Windows x64 version so I had to place the jar file here: C:\Program Files\pentaho\design-tools\data-integration\libext
Now I am able to connect to MySQL.
According to Pentaho, they can no longer include the MySQL JDBC connector as it is not compatible with the Apache 4.3 license.
I am trying to evaluate the MySQL plugin for NewRelic so I have to install a JRE on the MySQL server. Gut instinct tells me to go with Oracle JRE….not the alternatives. So, Here is what I did to install JRE 8.
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer
If you receive an error while adding the ppa, something like this:
error sudo: add-apt-repository: command not found
sudo apt-get install python-software-properties
One of my colleagues had a small issue with pulling the latest from github for my site today. The error was:
ssh: connect to host github.com port 22: Connection refused
fatal: The remote end hung up unexpectedly
Of course the word “fatal” would freak out any non linux user. So a with a little searching the following is the solution.
Add the following to your ./.ssh/config:
This forces ssh over https for github. All fixed! Now I do not have to bother networking for a firewall rule.
This uses the old Sys V init.d scripts. Not upstart. I may write a post on upstart at a later date. So, you write a cool script that you want to run at startup. Place it in /etc/rc.d/init.d and make it executable. Next run the following command:
sudo update-rc.d my_cool_script defaults
This will set the script to run on all the default run levels.