Only support configless mode

.github/workflows/ci.yml

@@ -51,7 +51,6 @@ jobs:
           - test2
           - test3
           - test4
-          - test5
           - test6
           - test8
           - test9

README.md

@@ -40,8 +40,6 @@ each list element:
 
 `openhpc_slurmdbd_host`: Optional. Where to deploy slurmdbd if are using this role to deploy slurmdbd, otherwise where an existing slurmdbd is running. This should be the name of a host in your inventory. Set this to `none` to prevent the role from managing slurmdbd. Defaults to `openhpc_slurm_control_host`.
 
-`openhpc_slurm_configless`: Optional, default false. If true then slurm's ["configless" mode](https://slurm.schedmd.com/configless_slurm.html) is used.
-
 `openhpc_munge_key_b64`: Optional. A base-64 encoded munge key. If not provided then the one generated on package install is used, but the `openhpc_slurm_control_host` must be in the play.
 
 `openhpc_login_only_nodes`: Optional. If using "configless" mode specify the name of an ansible group containing nodes which are login-only nodes (i.e. not also control nodes), if required. These nodes will run `slurmd` to contact the control node for config.
@@ -50,6 +48,9 @@ each list element:
 
 ### slurm.conf
 
+Note this role always operates in Slurm's [configless mode](https://slurm.schedmd.com/configless_slurm.html)
+where the `slurm.conf` configuration file is only present on the control node.
+
 `openhpc_nodegroups`: Optional, default `[]`. List of mappings, each defining a
 unique set of homogenous nodes:
   * `name`: Required. Name of node group.

defaults/main.yml

@@ -43,7 +43,6 @@ openhpc_default_config:
 
 openhpc_config: {}
 openhpc_gres_template: gres.conf.j2
-openhpc_slurm_configless: "{{ 'enable_configless' in openhpc_config.get('SlurmctldParameters', []) }}"
 
 openhpc_state_save_location: /var/spool/slurm
 

molecule/README.md

@@ -6,24 +6,23 @@ Test options in "Other" column flow down through table unless changed.
 
 Test   | # Partitions | Groups in partitions?   | Other
 ---    | ---          | ---                     | ---
-test1  | 1            | N                       | 2x compute node, sequential names (default test), config on all nodes
+test1  | 1            | N                       | 2x compute node, sequential names (default test)
 test1b | 1            | N                       | 1x compute node
 test1c | 1            | N                       | 2x compute nodes, nonsequential names
 test2  | 2            | N                       | 4x compute node, sequential names
 test3  | 1            | Y                       | 4x compute nodes in 2x groups, single partition
 test4  | 1            | N                       | 2x compute node, accounting enabled
-test5  | 1            | N                       | As for #1 but configless
-test6  | 1            | N                       | 0x compute nodes, configless
+test5  | -            | -                       | [removed, now always configless]
+test6  | 1            | N                       | 0x compute nodes
 test7  | 1            | N                       | [removed, image build should just run install.yml task, this is not expected to work]
-test8  | 1            | N                       | 2x compute node, 2x login-only nodes, configless
+test8  | 1            | N                       | 2x compute node, 2x login-only nodes
 test9  | 1            | N                       | As test8 but uses `--limit=testohpc-control,testohpc-compute-0` and checks login nodes still end up in slurm.conf
-test10 | 1            | N                       | As for #5 but then tries to add an additional node
-test11 | 1            | N                       | As for #5 but then deletes a node (actually changes the partition due to molecule/ansible limitations)
-test12 | 1            | N                       | As for #5 but enabling job completion and testing `sacct -c`
-test13 | 1            | N                       | As for #5 but tests `openhpc_config` variable.
-test14 | 1            | N                       | [removed, extra_nodes removed]
-test15 | 1            | Y                       | As for #5 but also tests `partitions with different name but with the same NodeName`.
-
+test10 | 1            | N                       | As for #1 but then tries to add an additional node
+test11 | 1            | N                       | As for #1 but then deletes a node (actually changes the partition due to molecule/ansible limitations)
+test12 | 1            | N                       | As for #1 but enabling job completion and testing `sacct -c`
+test13 | 1            | N                       | As for #1 but tests `openhpc_config` variable.
+test14 | -            | -                       | [removed, extra_nodes removed]
+test15 | 1            | Y                       | As for #1 but also tests partitions with different name but with the same NodeName.
 
 # Local Installation & Running
 

molecule/test10/converge.yml

@@ -10,7 +10,6 @@
     openhpc_nodegroups:
       - name: "compute"
     openhpc_cluster_name: testohpc
-    openhpc_slurm_configless: true
   tasks:
     - name: "Include ansible-role-openhpc"
       include_role:

molecule/test10/verify.yml

@@ -32,7 +32,6 @@
         openhpc_nodegroups:
           - name: "compute"
         openhpc_cluster_name: testohpc
-        openhpc_slurm_configless: true
 
 - name: Check modified cluster has 3x nodes
   hosts: testohpc_login

molecule/test11/converge.yml

@@ -14,4 +14,3 @@
         openhpc_nodegroups:
           - name: "compute_orig"
         openhpc_cluster_name: testohpc
-        openhpc_slurm_configless: true

molecule/test11/verify.yml

@@ -29,7 +29,6 @@
         openhpc_nodegroups:
           - name: "compute_new"
         openhpc_cluster_name: testohpc
-        openhpc_slurm_configless: true
 
 - name: Check modified cluster has 1x nodes
   hosts: testohpc_login

molecule/test12/converge.yml

@@ -14,5 +14,4 @@
         openhpc_nodegroups:
           - name: "compute"
         openhpc_cluster_name: testohpc
-        openhpc_slurm_configless: true
         openhpc_slurm_job_comp_type: jobcomp/filetxt

molecule/test13/converge.yml

@@ -10,7 +10,6 @@
     openhpc_nodegroups:
       - name: "compute"
     openhpc_cluster_name: testohpc
-    openhpc_slurm_configless: true
     openhpc_login_only_nodes: 'testohpc_login'
     openhpc_config:
       FirstJobId: 13

molecule/test15/converge.yml

@@ -20,7 +20,6 @@
           Default: false
           AllowAccounts: Group_own_thePartition
     openhpc_cluster_name: testohpc
-    openhpc_slurm_configless: true
   tasks:
     - name: "Include ansible-role-openhpc"
       include_role:

molecule/test6/converge.yml

@@ -9,7 +9,6 @@
     openhpc_nodegroups:
       - name: "n/a"
     openhpc_cluster_name: testohpc
-    openhpc_slurm_configless: true
   tasks:
     - name: "Include ansible-role-openhpc"
       include_role:

molecule/test8/converge.yml

@@ -10,7 +10,6 @@
     openhpc_nodegroups:
       - name: "compute"
     openhpc_cluster_name: testohpc
-    openhpc_slurm_configless: true
     openhpc_login_only_nodes: 'testohpc_login'
   tasks:
     - name: "Include ansible-role-openhpc"

molecule/test9/converge.yml

@@ -10,7 +10,6 @@
     openhpc_nodegroups:
       - name: "compute"
     openhpc_cluster_name: testohpc
-    openhpc_slurm_configless: true
     openhpc_login_only_nodes: 'testohpc_login'
   tasks:
     - name: "Include ansible-role-openhpc"

tasks/pre.yml

@@ -1,6 +1,6 @@
-- name: Enable batch on configless login-only nodes
+- name: Enable batch on login-only nodes
+  # TODO: why can't we remove this by just setting openhpc_enable.batch: true for appliance login nodes??
   set_fact:
     openhpc_enable: "{{ openhpc_enable | combine({'batch': true}) }}"
   when:
-    - openhpc_slurm_configless
     - openhpc_login_only_nodes in group_names

tasks/runtime.yml

@@ -63,7 +63,7 @@
     owner: root
     group: root
     mode: 0644
-  when: openhpc_enable.control | default(false) or not openhpc_slurm_configless | bool
+  when: openhpc_enable.control | default(false)
   notify:
     - Restart slurmctld service
   register: ohpc_slurm_conf
@@ -76,7 +76,7 @@
     mode: "0600"
     owner: slurm
     group: slurm
-  when: openhpc_enable.control | default(false) or not openhpc_slurm_configless | bool
+  when: openhpc_enable.control | default(false)
   notify:
     - Restart slurmctld service
   register: ohpc_gres_conf
@@ -90,7 +90,7 @@
     mode: "0644" # perms/ownership based off src from ohpc package
     owner: root
     group: root
-  when: openhpc_enable.control | default(false) or not openhpc_slurm_configless | bool
+  when: openhpc_enable.control | default(false)
 
 - name: Remove local tempfile for slurm.conf templating
   ansible.builtin.file:
@@ -132,10 +132,9 @@
 - name: Configure slurmd command line options
   vars:
     slurmd_options_configless: "--conf-server {{ openhpc_slurm_control_host_address | default(openhpc_slurm_control_host) }}"
-    slurmd_options: ""
   lineinfile:
     path: /etc/sysconfig/slurmd
-    line: "SLURMD_OPTIONS='{{ slurmd_options_configless if openhpc_slurm_configless | bool else slurmd_options }}'"
+    line: "SLURMD_OPTIONS='{{ slurmd_options_configless }}'"
     regexp: "^SLURMD_OPTIONS="
     create: yes
     owner: root

templates/slurm.conf.j2

@@ -3,16 +3,14 @@ ClusterName={{ openhpc_cluster_name }}
 # PARAMETERS
 {% for k, v in openhpc_default_config | combine(openhpc_config) | items %}
 {%  if v != "omit" %}{# allow removing items using setting key: null #}
-{%    if k != 'SlurmctldParameters' %}{# handled separately due to openhpc_slurm_configless #}
+{%    if k != 'SlurmctldParameters' %}{# handled separately due to configless mode #}
 {{ k }}={{ v | join(',') if (v is sequence and v is not string) else v }}
 {%    endif %}
 {%  endif %}
 {% endfor %}
 
-{% set slurmctldparameters = ((openhpc_config.get('SlurmctldParameters', []) + (['enable_configless'] if openhpc_slurm_configless | bool else [])) | unique) %}
-{% if slurmctldparameters | length > 0 %}
+{% set slurmctldparameters = ((openhpc_config.get('SlurmctldParameters', []) + ['enable_configless']) | unique) %}
 SlurmctldParameters={{ slurmctldparameters | join(',') }}
-{% endif %}
 
 # LOGIN-ONLY NODES
 # Define slurmd nodes not in partitions for login-only nodes in "configless" mode: