Conditionally install Python deps

- Add performance tuning configuration (thanks @t0k4rt)
- Update documentation
- Conditionally install Python dependency baed on virtualenv or --user
  Addresses #129 (comment)

CHANGELOG.md

@@ -771,3 +771,6 @@ Actually add new template files :facepalm:
 ## v1.30.1 (UNRELEASED)
 
 - Add performance tuning configuration (thanks @t0k4rt)
+- Update documentation
+- Conditionally install Python dependency baed on virtualenv or --user
+  Addresses https://github.com/brianshumate/ansible-consul/issues/129#issuecomment-356095611

README.md

@@ -813,6 +813,21 @@ consul3.node.consul.  0 IN  A 10.1.42.230
 - Custom list of addresses to listen on.
 - Default value: *[]*
 
+### `consul_performance`
+
+This is a nested object of Consul performance related options.
+
+#### `consul_performance.raft_multiplier`
+
+This is the [raft multiplier](https://www.consul.io/docs/agent/options.html#raft_multiplier). See also [Server Performance](https://www.consul.io/docs/guides/performance.html).
+
+#### `consul_performance.leave_drain_time`
+
+This is the [leave drain time](https://www.consul.io/docs/agent/options.html#leave_drain_time).
+
+#### `consul_performance.rpc_hold_timeout`
+
+This is the [RPC hold timeout](https://www.consul.io/docs/agent/options.html#rpc_hold_timeout).
 
 ### iptables DNS Forwarding Support
 

defaults/main.yml

@@ -3,6 +3,7 @@
 
 ## Core
 consul_debug: no
+is_virtualenv: "{{ lookup('env','VIRTUAL_ENV') | default('', true) }}"
 
 ### Package
 consul_version: "{{ lookup('env','CONSUL_VERSION') | default('1.0.2', true) }}"

tasks/main.yml

@@ -1,12 +1,20 @@
 ---
 # File: main.yml - Main tasks for Consul
 
-- name: Install netaddr dependency on controlling host as user
+- name: Install netaddr dependency on controlling host (with --user)
   pip:
     name: netaddr
     extra_args: --user
   delegate_to: 127.0.0.1
   become: false
+  when: is_virtualenv is not defined
+
+- name: Install netaddr dependency on controlling host (virtualenv)
+  pip:
+    name: netaddr
+  delegate_to: 127.0.0.1
+  become: false
+  when: is_virtualenv is defined
 
 - name: Include checks/asserts
   include: asserts.yml