Update README to reflect switch to ansible

README.md

@@ -7,28 +7,27 @@ a Docker image) which contains utilities to manage your cluster.
 
 ## Prerequisites
 
-We assume a single-node setup for now.
-
-You need to have ssh access to the root account of the machine that will run
+* You need to have ssh access to the root account of the machines that will run
 your cluster.
+* You need ansible installed on your workstation to run the bootstrap scripts.
 
 ## Bootstrapping a new cluster
 
-To run the bootstrap process:
+### Configure your cluster
 
-```
-./bootstrap $SERVER_IP
-```
+Copy `ansible/inventory.example` to `ansible/inventory` and edit it to reflect
+your cluster.
 
-where `$SERVER_IP` is the ip address of the machine. (This address will also be
-stored in the cluster configuration and is used by the Traefik ingress
-controller, so even though using a domain name instead of an ip address may
-work at first, that is not recommended.)
+Also copy `ansible/group_vars/cluster/settings.yml.example` to
+`ansible/group_vars/cluster/settings.yml` and edit as you see fit.
 
-The bootstrap script will fire up your text editor to let you specify some
-basic configuration parameters that are needed to set up your cluster. When
-you're done editing, save and exit your editor, and the bootstrap process will
-continue.
+### Install
+
+To run the bootstrap process, move into the `ansible` directory, then run
+
+```
+./ansible-playbook -i inventory.yml bootstrap.yml
+```
 
 ## Managing an existing cluster
 
@@ -49,7 +48,7 @@ Some programs that you can run from this shell:
 To start the control shell, run
 
 ```
-./manage $SERVER_IP
+./manage $SERVER
 ```
 
-where `$SERVER_IP` is the address of the machine running your cluster.
+where `$SERVER` is the address of the master machine of your cluster.