Merge branch 'slurm-20.02-configless-changes01' into 'master'

Remove probe for GRES/CPU on gpu nodes, and remove gres.conf & slurm.conf, going configless

See merge request !454

roles/slurm-common/tasks/main.yml

@@ -73,6 +73,7 @@
       - hwloc-devel
       - lua
       - lua-devel
+      - python3
   become: true
   when: ansible_os_family == "RedHat"
 
@@ -92,6 +93,7 @@
       - liblua5.2-dev
       - hwloc
       - libhwloc-dev
+      - python3
   become: true
   when: ansible_os_family == "Debian"
 
@@ -118,32 +120,12 @@
 
 - include: createSlurmDirectories.yml
 
-- name: check slurm generic resource
-  shell: "{{ slurm_gres_check }}"
-  register: slurm_generic_resource
-  ignore_errors: true
-  when: slurm_gres_check is defined
-  check_mode: no
-  changed_when: False
-
-- name: Gres - Test for Nvidia devices
-  script: scripts/nvidia-probe.py
-  register: probeOutput
-  check_mode: no
-  changed_when: False
-
 - name: get cpu count
   shell: 'lscpu | grep "On-line CPU" | cut -f 2 -d ":" | sed "s/\ *//g"'
   register: cpucount
   check_mode: no
   changed_when: False
 
-- name: "set nvidiaprobe slurm_gres_list"
-  set_fact: "slurm_gres_list={{  probeOutput.stdout }}"
-
-- name: template gres.conf file
-  template: src="gres.conf.j2" dest={{ slurm_dir }}/etc/gres.conf mode=644
-  become: true
 
 - name: make slurm prolog dir
   file: path=/opt/slurm/etc state=directory mode=755
@@ -158,15 +140,6 @@
   template: src=slurm.epilog.j2 dest=/opt/slurm/etc/slurm.epilog mode=755
   become: true
 
-- name: install slurm.conf
-  copy: src=files/slurm.conf dest={{ slurm_dir }}/etc/slurm.conf
-  become: true
-  when: slurm_use_vpn==False
-
-- name: install slurm.conf
-  template: src=slurm-vpn.conf.j2 dest={{ slurm_dir }}/etc/slurm.conf
-  become: true
-  when: slurm_use_vpn==True
 
 - name: setup envirnment variables
   template: src=slurm_setup.sh.j2 dest=/etc/profile.d/slurm_setup.sh

roles/slurm-start/templates/slurmd.service.j2

 [Unit]
 Description=Slurm node daemon
 After=network.target
-ConditionPathExists={{ slurm_dir }}/etc/slurm.conf
+# After Slurm-20.02 (configless), this is not needed
+# ConditionPathExists={{ slurm_dir }}/etc/slurm.conf
 
 [Service]
 Type=forking
 KillMode=process
 LimitMEMLOCK=infinity
 #EnvironmentFile=/etc/default/slurmd
-ExecStart={{ slurm_dir }}/sbin/slurmd $SLURMD_OPTIONS
+ExecStart={{ slurm_dir }}/sbin/slurmd --conf-server {{ slurmctrl }}:6817
 PIDFile={{ slurmpiddir }}/slurmd.pid
 
 [Install]