fix login-only nodes when configless: new role var openhpc_enable.login

Author: sjpb

README.md

@@ -25,6 +25,7 @@ package in the image.
 * `control`: whether to enable control host
 * `database`: whether to enable slurmdbd
 * `batch`: whether to enable compute nodes
+* `login`: whether to enable login-only nodes in configless mode (for combined control/login nodes this can be left false)
 * `runtime`: whether to enable OpenHPC runtime
 * `drain`: whether to drain compute nodes
 * `resume`: whether to resume compute nodes

defaults/main.yml

@@ -38,13 +38,15 @@ openhpc_slurmdbd_mysql_username: slurm
 openhpc_enable:
   control: false
   batch: false
+  login: true
   database: false
   runtime: false
   drain: false
   resume: false
 ohpc_slurm_services:
   control: slurmctld
   batch: slurmd
+  login: slurmd
 ohpc_release_repos:
   "7": "https://github.com/openhpc/ohpc/releases/download/v1.3.GA/ohpc-release-1.3-1.el7.x86_64.rpm" # ohpc v1.3 for Centos 7
   "8": "http://repos.openhpc.community/OpenHPC/2/CentOS_8/x86_64/ohpc-release-2-1.el8.x86_64.rpm" # ohpc v2 for Centos 8

tasks/runtime.yml

@@ -43,6 +43,11 @@
   notify:
     - Restart Munge service
 
+- name: Set fact for login-only nodes
+  # needed b/c openhpc_enable doesn't end up in hostvars
+  set_fact:
+    openhpc_login_only: "{{ openhpc_enable.login | default(false) | bool }}"
+  
 - name: Template slurmdbd.conf
   template:
     src: slurmdbd.conf.j2
@@ -75,7 +80,7 @@
     group: root
     mode: 0644
   when:
-    - openhpc_enable.batch | default(false) | bool
+    - (openhpc_enable.batch | default(false) | bool) or (openhpc_enable.login | default(false) | bool)
     - openhpc_slurm_configless
   notify:
     - Reload SLURM service

templates/slurm.conf.j2

@@ -137,6 +137,14 @@ PartitionName={{part.name}} \
         {% endfor %}{# group #}
 {% endfor %}{# partitions #}
 
+
+# Define slurmd nodes not in partitions for configless login-only nodes:
+{% for node in hostvars %}
+    {% if hostvars[node].openhpc_login_only %}
+NodeName={{ node }}
+    {% endif %}
+{% endfor %}{# configless login-only #}
+
 # Want nodes that drop out of SLURM's configuration to be automatically
 # returned to service when they come back.
 ReturnToService=2