Merge pull request #498 from diedpigs/feat-variable-backend-server

Use variables for http proxy backend hosts

group_vars/all

@@ -354,6 +354,9 @@
 
 # http_proxy
   enable_http_proxy: false
+  target_groups:
+    - {"name": "gpfs4", "host": "login001", "default": True}
+    - {"name": "gpfs5", "host": "login002", "default": False}
 
 # cod_slurm
   frozen_file_list:

roles/http_proxy/files/rewrite_map.py

@@ -1,19 +1,32 @@
 #!/usr/bin/env python3
 import grp
 import sys
-import rewritemap_config as cfg
+import rewrite_map_config as cfg
 
 while sys.stdin:
+    hostname = ""
     try:
         username = sys.stdin.readline().strip()   ## It is very important to use strip!
-        if cfg.DEBUG: print(username)
-        if not username:
-            print(cfg.default_hostname)
-        if username in grp.getgrnam(cfg.target_grp).gr_mem:
-            print(cfg.target_hostname)
-        else:
-            print(cfg.default_hostname)
-        sys.stdout.flush()
+        if cfg.DEBUG:
+            print("username: ", username)
+
+        if username:
+            for group in cfg.target_groups:
+                if cfg.DEBUG:
+                    print("Checking group: ", group)
+                    print("\t", grp.getgrnam(group).gr_mem)
+
+                if username in grp.getgrnam(group).gr_mem:
+                    hostname = cfg.target_groups[group]
+                    break
+
+        if not hostname:
+            hostname = cfg.default_hostname
+
     except:
-        print(cfg.default_hostname)
-        sys.stdout.flush()
+        hostname = cfg.default_hostname
+
+    print(hostname)
+    sys.stdout.flush()
+    if cfg.DEBUG:
+        break

roles/http_proxy/tasks/main.yml

@@ -109,10 +109,10 @@
         dest: /etc/httpd/conf.d/front-end.conf
 
     - name: Add apache rewritemap script config
-      ansible.builtin.copy:
-        src: rewritemap_config.py
+      ansible.builtin.template:
+        src: rewrite_map_config_py.j2
         mode: '755'
-        dest: /var/www/rewritemap_config.py
+        dest: /var/www/rewrite_map_config.py
 
     - name: Add apache rewritemap script
       ansible.builtin.copy:

roles/http_proxy/templates/rewrite_map_config_py.j2

@@ -0,0 +1,11 @@
+DEBUG = False
+target_groups = {
+    {% for group in target_groups %}
+    "{{ group.name }}": "{{ group.host }}",
+    {% endfor %}
+}
+{% for group in target_groups %}
+{% if group.default %}
+default_hostname = "{{ group.host }}"
+{% endif %}
+{% endfor %}