Changes between Version 4 and Version 5 of ChefonDETER

Timestamp:

Jul 14, 2014 1:00:19 PM (10 years ago)

Author:

Geoff Lawler

Comment:

--

ChefonDETER

@@ -7 +7 @@
 The workflow for a running system is recipes, roles, and chef code is written on a workstation and added to a chef repository. The person on the workstation then pushes updates to the chef server. The client then contacts the chef server for updates, gets the updates, and applies them locally. {{{Knife}}}, on a workstation, can also install Chef-client (and other packages) directly on a client. If this is done the flow becomes: 1) workstation pushes update to the server, 2) the workstation installs Chef on a client and gives it an initial role or list of recipes, 3) the newly installed {{{chef-client}}} then contacts the chef server and downloads the recipes and executes them, configuring the client node.
 
-Installing Chef:
 Swap in an experiment with at least two Ubuntu 12.04 nodes, one of which will be the Chef server and one will be the client.  
- * Chef Server
+
+=== Chef Server ===
+The server is simple to install: just use dpkg to install it. 
+
 {{{
 > ssh server
@@ -17 +19 @@
 > sudo chef-server-ctl test
 }}}
- * Chef Workstation
+
+=== Chef Workstation === 
+
+This can be the same machine as the server. First we install the package, then configure it. The configuration involves cloning the {{{chef-repo}}} git repository that has the DETER specific recipes. We also set up a trusted user and the appropriate keys. 
+
 {{{
-# TBD
+> ssh workstation
+> sudo dpkg -i /share/chef/chef_11.12.2-1_amd64.deb
+> chef-client -v                # test - should show version.
+> sudo apt-get install -y git   # chef uses git.
+> sudo chmod g+x /local
+> cd /local
+> git clone /share/chef/chef-repo
 }}}
- * Chef Client(s)
+
+=== Chef Client(s) ===
+
+These machines should be different than the server and workstation. There are three ways to install chef on a client. 1) simply use whatever package system exists for the client OS and install the chef software. 2) Use a chef workstation to push platform specific chef software to the client that installs and configures it. 3) Use the chef supplied script that reaches out to the internet and executes arbitrary commands on the machine as root. We will use method 2) to give a flavor of installing chef by force on unsuspecting nodes on DETER (as this is the most flexible and useful installation method in the DETER context). 
+
 {{{
-# TBD
+> ssh client
+> 
 }}}