Merge pull request #1 from abutcher/nuage_ha

Filterize haproxy front/backends and add method for specifying custom front/backends

4 files changed, 53 insertions, 14 deletions

diff --git a/roles/openshift_loadbalancer/README.md b/roles/openshift_loadbalancer/README.md
index 81fc282be..03e837e46 100644
--- a/roles/openshift_loadbalancer/README.md
+++ b/roles/openshift_loadbalancer/README.md
@@ -1,27 +1,68 @@
 OpenShift HAProxy Loadbalancer
 ==============================
 
-TODO
+OpenShift HaProxy Loadbalancer Configuration
 
 Requirements
 ------------
 
-TODO
+This role is intended to be applied to the [lb] host group which is
+separate from OpenShift infrastructure components.
+
+This role is not re-entrant. All haproxy configuration lives in a single file.
 
 Role Variables
 --------------
 
-TODO
+From this role:
+
+| Name                                   | Default value |                                                       |
+|----------------------------------------|---------------|-------------------------------------------------------|
+| openshift_loadbalancer_limit_nofile    | 100000        | Limit number of open files.                           |
+| openshift_loadbalancer_global_maxconn  | 20000         | Maximum per-process number of concurrent connections. |
+| openshift_loadbalancer_default_maxconn | 20000         | Maximum per-process number of concurrent connections. |
+| openshift_loadbalancer_frontends       | none          | List of frontends. See example below.                 |
+| openshift_loadbalancer_backends        | none          | List of backends. See example below.                  |
 
 Dependencies
 ------------
 
-TODO
+* openshift_facts
+* os_firewall
+* openshift_repos
 
 Example Playbook
 ----------------
 
-TODO
+```
+- name: Configure loadbalancer hosts
+  hosts: lb
+  roles:
+  - role: openshift_loadbalancer
+    openshift_loadbalancer_frontends:
+    - name: atomic-openshift-api
+      mode: tcp
+      options:
+      - tcplog
+      binds:
+      - "*:8443"
+      default_backend: atomic-openshift-api
+    openshift_loadbalancer_backends:
+    - name: atomic-openshift-api
+      mode: tcp
+      option: tcplog
+      balance: source
+      servers:
+      - name: master1
+        address: "192.168.122.221:8443"
+	opts: check
+      - name: master2
+        address: "192.168.122.222:8443"
+	opts: check
+      - name: master3
+        address: "192.168.122.223:8443"
+	opts: check
+```
 
 License
 -------
diff --git a/roles/openshift_loadbalancer/meta/main.yml b/roles/openshift_loadbalancer/meta/main.yml
index ed846a1ba..e1d78cfd0 100644
--- a/roles/openshift_loadbalancer/meta/main.yml
+++ b/roles/openshift_loadbalancer/meta/main.yml
@@ -10,11 +10,11 @@ galaxy_info:
     versions:
     - 7
 dependencies:
-- role: openshift_loadbalancer_facts
+- role: openshift_facts
 - role: os_firewall
   os_firewall_allow:
   - service: haproxy stats
     port: "9000/tcp"
   - service: haproxy balance
-    port: "{{ openshift.loadbalancer.frontend_port }}/tcp"
+    port: "{{ openshift_master_api_port | default(8443) }}/tcp"
 - role: openshift_repos
diff --git a/roles/openshift_loadbalancer/tasks/main.yml b/roles/openshift_loadbalancer/tasks/main.yml
index 03a7c0e4a..bb4982e2d 100644
--- a/roles/openshift_loadbalancer/tasks/main.yml
+++ b/roles/openshift_loadbalancer/tasks/main.yml
@@ -7,15 +7,13 @@
   file:
     path: /etc/systemd/system/haproxy.service.d
     state: directory
-  when: "'limit_nofile' in openshift.loadbalancer"
 
 - name: Configure the nofile limits for haproxy
   ini_file:
     dest: /etc/systemd/system/haproxy.service.d/limits.conf
     section: Service
     option: LimitNOFILE
-    value: "{{ openshift.loadbalancer.limit_nofile }}"
-  when: "'limit_nofile' in openshift.loadbalancer"
+    value: "{{ openshift_loadbalancer_limit_nofile | default(100000) }}"
   notify: restart haproxy
   register: nofile_limit_result
 
diff --git a/roles/openshift_loadbalancer/templates/haproxy.cfg.j2 b/roles/openshift_loadbalancer/templates/haproxy.cfg.j2
index b9a279f5f..79e695001 100644
--- a/roles/openshift_loadbalancer/templates/haproxy.cfg.j2
+++ b/roles/openshift_loadbalancer/templates/haproxy.cfg.j2
@@ -3,7 +3,7 @@
 global
     chroot      /var/lib/haproxy
     pidfile     /var/run/haproxy.pid
-    maxconn     {{ openshift.loadbalancer.global_maxconn }}
+    maxconn     {{ openshift_loadbalancer_global_maxconn | default(20000) }}
     user        haproxy
     group       haproxy
     daemon
@@ -32,14 +32,14 @@ defaults
     timeout server          300s
     timeout http-keep-alive 10s
     timeout check           10s
-    maxconn                 {{ openshift.loadbalancer.default_maxconn }}
+    maxconn                 {{ openshift_loadbalancer_default_maxconn | default(20000) }}
 
 listen stats :9000
     mode http
     stats enable
     stats uri /
 
-{% for frontend in openshift.loadbalancer.frontends %}
+{% for frontend in openshift_loadbalancer_frontends %}
 frontend  {{ frontend.name }}
 {% for bind in frontend.binds %}
     bind {{ bind }}
@@ -60,7 +60,7 @@ frontend  {{ frontend.name }}
 {% endif %}
 {% endfor %}
 
-{% for backend in openshift.loadbalancer.backends %}
+{% for backend in openshift_loadbalancer_backends %}
 backend {{ backend.name }}
     balance {{ backend.balance }}
 {% if 'mode' in backend %}