Setting up Open Chef Server and a Workstation

The quick and dirty way…

Prep work

For me, I stood up two Centos 6.5 instances in virtualbox. I did the basics of installing the EPEL repo, groupinstall of “Base” and “developer tools” in YUM, setup and configured a user for myself.

Create my user:

useradd -m -G wheel seth
passwd seth

Install EPEL repo:

wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
sudo rpm -Uvh remi-release-6*.rpm epel-release-6*.rpm

YUM Groupinstall:

sudo yum groupinstall base "developer tools"


Downloading the needed files

http://www.getchef.com/chef/install/

First we will install the server…

 

For the server

Pick which package you need here and download it to the “chef-server”

cd /opt
sudo wget "https://opscode-omnibus-packages.s3.amazonaws.com/el/6/x86_64/chef-server-11.0.12-1.el6.x86_64.rpm"
sudo rpm -ivh  chef-server-11.0.12-1.el6.x86_64.rpm
sudo chef-server-ctl reconfigure

This command will set up all of the required components, including Erchef, RabbitMQ, and PostgreSQL

 sudo chef-server-ctl test

 

For the Workstation

As root run the curl command supplied to you from the Chef Download page. For me it was…

curl -L https://www.opscode.com/chef/install.sh | bash

Once this completes do this to test the install and see the version number:

chef-client -v

Now install GIT…

yum install git

(This will install version 1.7.1-ish)

From here as my own user I went to my home directory and cloned down the Chef GIT repo:

git clone git://github.com/opscode/chef-repo.git

Next cd into the chef-repo dir and create your .chef folder. This folder will hold your authorization files in a few steps from now.

cd chef-repo
 mkdir .chef

Add your .chef to the .gitignore file so it and its contents will not be uploaded.

echo .chef >> .gitignore

Get the .pem files and knife.rb files
You will need to copy these files from the chefserver that you previously setup. These files essentially give you access to connect to the server via chef-client and with knife. For me the command run from my workstation was…

sudo scp root@192.168.1.152:/etc/chef-server/admin.pem /home/seth/chef-repo/.chef/admin.pem
sudo scp root@192.168.1.152:/etc/chef-server/chef-validator.pem /home/seth/chef-repo/.chef/chef-validator.pem

You then want to run the knife initial command to create the knife.rb file in your .chef folder. Unless you know the hostname of your server and the locations of your admin and chef-validator.pem files this step will fail. You also need to make sure that port 443 is open on your server. You can do that with this:

sudo iptables -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT
sudo service iptables save

Now do this:

knife configure --initial

Here is what my output looked like to give you an idea of what to expect:

[seth@chefworkstation001 .chef]$ knife configure --initial
 Overwrite /home/seth/.chef/knife.rb? (Y/N)y
 Please enter the chef server URL: [https://chefworkstation001.devopshomelab:443] https://192.168.1.152:443
 Please enter a name for the new user: [seth]
 Please enter the existing admin name: [admin]
 Please enter the location of the existing admin's private key: [/etc/chef-server/admin.pem] /home/seth/chef-repo/.chef/admin.pem
 Please enter the validation clientname: [chef-validator]
 Please enter the location of the validation key: [/etc/chef-server/chef-validator.pem] /home/seth/chef-repo/.chef/chef-validator.pem
 Please enter the path to a chef repository (or leave blank):
 Creating initial API user...
 Please enter a password for the new user:
 Created user[seth]
 Configuration file written to /home/seth/.chef/knife.rb

Once you successfully make it past this point you should be good to go. You can test your configuration and connectivity to your server by running the following two commands:

knife client list
knife user list

Now lets bootstrap our new chef workstation

On the server you will need to configure knife like we did on the client side so do:

sudo knife configure -i

You will see something similar to what we saw the firwst time we ran this. Here is my output…

WARNING: No knife configuration file found
Where should I put the config file? [/root/.chef/knife.rb]
Please enter the chef server URL: [https://chefserver.devopshomelab:443]
Please enter a name for the new user: [seth] chefserver
Please enter the existing admin name: [admin]
Please enter the location of the existing admin's private key: [/etc/chef-server/admin.pem]
Please enter the validation clientname: [chef-validator]
Please enter the location of the validation key: [/etc/chef-server/chef-validator.pem]
Please enter the path to a chef repository (or leave blank):
Creating initial API user...
Please enter a password for the new user:
Created user[chefserver]
Configuration file written to /root/.chef/knife.rb

If you have everything configured correctly you can now bootstrap your workstation by running the following command:

sudo ./knife bootstrap 192.168.1.153 --sudo -x seth -N "chefworkstation001"

 

You should have successfully installed and configured a working Chef open server and workstation following these steps. If you have questions or comments please feel free to use the comment section below. As always you can also consult the official Chef documentation on this subject by going here:

SERVER: http://docs.opscode.com/install_server.html

WORKSTATION: http://docs.opscode.com/install_workstation.html

Also check out my other post about bootstrapping a node in your new Chef environment. HERE

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Getting setup with MongoDB and Python, Pymongo, and Bottle on Centos 6

From my older blog. Originally posted Oct 26th 2012

I had to walk through all of this to get setup for my Mongo Developer and Administrator certification classes. I figured I might help you out and put it all together instead of you having to hunt all over the place for this info.

Lets get started…

Step 1: Install MongoDB

To install MongoDB on your fedora system, issue the following commands in your terminal:

su -

Lets make sure that mongo hasnt already been installed while you were playing around with it…

yum -y remove libmongodb mongodb mongodb-server

Setup the mongodb repo…

vi /etc/yum.repos.d/10gen.repo

For 32 Bit, place the following code on that file:
http://gist.github.com/3949816#file_32bit.repo

and for 64 Bit this one:
http://gist.github.com/3949816#file_64bit.repo

Installation…
Run these two commands.

yum install mongo-10gen mongo-10gen-server
mongod -f /etc/mongod.conf

Then open your Mongo Shell in terminal (to ensure it’s functional) with:

mongo

and close it by pressing Ctrl+C; Then add the mongo service to the system’s startup with:

chkconfig --levels 235 mongod on

Reboot and reopen the Mongo Shell with the command:

mongod -f /etc/mongod.conf && mongo

Close it with Ctrl+C and then go to:
http://localhost:27017/
In your web browser, you should see something like this:

“You are trying to access MongoDB on the native driver port. For http diagnostic access, add 1000 to the port number”

If you see this then you have it installed and setup correctly.

Step2. Installing Python, Pymongo, and Python-Bottle

First a little background…

Python – Python is a general-purpose, interpreted high-level programming language whose design philosophy emphasizes code readability. Its syntax is said to be clear and expressive.Python has a large and comprehensive standard library. More info can be found here: http://www.python.org/

Pymongo – PyMongo is a Python distribution containing tools for working with MongoDB, and is the recommended way to work with MongoDB from Python. More info can be found here: http://api.mongodb.org/python/current/

Bottle – Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It is distributed as a single file module and has no dependencies other than the Python Standard Library. More info is here: http://bottlepy.org/docs/dev/

If you haven’t already you need to install the EPEL repo for Centos 6

Check to see if you already have it installed or not…

yum repolist

You will see something similar to this:

repo id      repo name              status
base         CentOS-6 - Base        6,294
extras       CentOS-6 - Extras      4
updates      CentOS-6 - Updates     830
repolist:                           7,128

Since you dont see it above you need to grab the package…
http://mirror.us.leaseweb.net/epel/6/i386/repoview/epel-release.html

-OR-

wget "http://mirror.us.leaseweb.net/epel/6/i386/epel-release-6-7.noarch.rpm"

Note… the version number in the rpm name…if you are looking at this very late after the pub date of this post then you likely need to grab a more current version. Just follow the link above and you should see it.

do this next to test the rpm…

rpm -ivh epel-release-6-5.noarch.rpm --test

You will get back a NO KEY message.

You now need to download and install the key from FedoraProject and install on your system…

wget https://fedoraproject.org/static/0608B895.txt
mv 0608B895.txt /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6

Verify that the key got installed successfully…

rpm -qa gpg*
gpg-pubkey-0608b895-4bd22942

Now install the epel-release-6-6.noarch package, which will enable EPEL repository on your system…

rpm -ivh epel-release-6-5.noarch.rpm

Now verify that the EPEL repo is working correctly…

yum repolist

You should see a line that looks similar to this:

epel      Extra Packages for Enterprise Linux 6 - x86_64      7,345

Now lets get Python, Pymongo and Bottle setup…

Pretty simple and straight forward…

sudo yum -y install python python-setuptools python-setuptools-devel
sudo yum -y install python-bson pymongo pymongo-gridfs

To install bottle you may need to install PIP first…
You can do this using curl and python…

curl https://raw.github.com/pypa/pip/master/contrib/get-pip.py | python

Then install bottle…

pip install bottle