Squashed commit of the following:

commit 14b6a56
Author: Johan Guldmyr <[email protected]>
Date:   Thu Sep 22 14:16:55 2016 +0300

    remove list entry

commit c73b14e
Author: Johan Guldmyr <[email protected]>
Date:   Thu Sep 22 14:01:51 2016 +0300

    smaller csc logo in the corner

commit 3aee39d
Author: Johan Guldmyr <[email protected]>
Date:   Thu Sep 22 11:19:57 2016 +0300

     - add some lists to lower content

commit 63e37fd
Author: Johan Guldmyr <[email protected]>
Date:   Mon Sep 19 13:46:48 2016 +0300

    poll the crowd about their familiarity with ansible

commit 41005de
Author: Johan Guldmyr <[email protected]>
Date:   Mon Sep 19 12:15:35 2016 +0300

    link to this presentation at the end

commit bced801
Author: Johan Guldmyr <[email protected]>
Date:   Mon Sep 19 12:09:09 2016 +0300

    some hilights

commit 5264d45
Author: Johan Guldmyr <[email protected]>
Date:   Mon Sep 19 12:04:39 2016 +0300

    gitpitch pressentation for ansible-role-slurm

PITCHME.css

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+.reveal section img {
+  border: 0;
+  box-shadow: none;
+}

PITCHME.md

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+#Configure a slurm cluster with ansible
+
+CSC - IT Center for Science Ltd
+
+Johan Guldmyr, Slurm User Group 2016, Athens
+![FGCILogo](images/FGCI-logo.jpg)
+
+#HSLIDE
+
+# FGCI/CSC
+
+What we do - homogeneousish configuration. 
+
+# Stack:
+
+ - Ansible, CentOS7, CVMFS/Easybuild, Dell, Infiniband
+ - KVM, NFSv4, NorduGrid ARC, PXE/kickstart, **Slurm**
+
+#HSLIDE
+
+#Agenda
+ - history of ansible-role-slurm
+ - ansible modules, tasks, playbooks and roles
+ - what ansible-role-slurm does
+ - how to use it
+ - other tools
+
+#HSLIDE
+
+# credits / history
+
+ - @A1ve5
+ - @jabl
+ - me
+ - @passerim
+
+#HSLIDE
+
+# ansible is a config management tool
+
+ - maybe similar to puppet, quattor, cfengine, salt, chef
+ - no daemon, uses ssh for push mode or cronjob for pull
+ - quick poll
+
+#HSLIDE
+
+# An ansible task
+
+~~~~
+  - name: start and enable slurmctld
+    service: name={{ slurmctld_service }} state=started enabled=yes
+~~~~
+
+#HSLIDE
+
+#An ansible-playbook:
+
+~~~~
+ - hosts: install,compute
+   remote_user: root
+   roles:
+     - ansible-role-pam
+     - ansible-role-nhc
+     - ansible-role-slurm
+~~~~
+
+#HSLIDE
+
+#a playbook with tags (and sudo):
+
+~~~~
+ - hosts: install,compute
+   remote_user: cloud-user
+   become: True
+   roles:
+     - { role: ansible-role-pam, tags: [ 'auth', 'pam' ] }
+     - { role: ansible-role-nhc, tags: [ 'nhc', 'slurm' ] }
+     - { role: ansible-role-slurm, tags: [ 'slurm' ] }
+~~~~
+
+#HSLIDE
+
+#What does ansible-role-slurm do?
+
+ - ansible-playbook install.yml --tags=slurm --list-tasks
+
+... too many
+
+#HSLIDE
+
+![FGCILogo](images/slurm-list-tasks.gif)
+
+#HSLIDE
+what it does (shortest version)
+
+#Configure all the things for slurm
+
+picture.png
+
+#HSLIDE
+
+what it does (shorter version)
+
+configure:
+ - one service node
+ - one dbd node (could be the same as the service node)
+ - submit nodes
+ - compute nodes
+
+#HSLIDE
+
+what it does (short version)
+
+ - add yum repo, install slurm, munge, mysql
+ - add users
+ - create directories
+ - template in config files (slurm, gres, cgroup.conf)
+ - generate or copy in munge key
+ - create cluster in accounting
+ - setup epilog
+ - increase sysctl values
+ - setup PAM + security/access.conf to restrict ssh access
+
+#HSLIDE
+
+# another example
+
+~~~~
+  - name: install common Slurm packages
+    package: name={{ item }} state=present
+    with_items: "{{ slurm_packages }}"
+    when: slurm_packages.0 != ""
+
+~~~~
+
+#HSLIDE
+
+# slurm.conf and ansible jinja variables
+
+~~~~
+ClusterName={{ slurm_clustername }}
+ControlMachine={{ slurm_service_node }}
+~~~~
+
+#HSLIDE
+
+~~~~
+  - name: sacctmgr show cluster siteName and store in slurm_clusterlist variable
+    command: "sacctmgr -n show cluster {{ siteName }}"
+    register: slurm_clusterlist
+    always_run: yes
+    changed_when: False
+
+  - name: add cluster to accounting
+    command: "sacctmgr -i add cluster {{ siteName }}"
+    when: slurm_clusterlist.stdout.find("{{siteName}}") == -1
+~~~~
+
+#HSLIDE
+
+#(single centos7 node) part 1
+~~~~
+#If the node has hostname "slurm-ansible" configure your ssh/config so you can ssh+sudo to that
+sudo yum install ansible
+mkdir -p slurm_workdir/{files,roles,group_vars/all}; cd slurm_workdir
+git clone https://github.com/CSC-IT-Center-for-Science/ansible-role-slurm roles/ansible-role-slurm
+git clone https://github.com/jabl/ansible-role-pam roles/ansible-role-pam
+git clone https://github.com/CSC-IT-Center-for-Science/ansible-role-nhc roles/ansible-role-nhc
+cp roles/ansible-role-slurm/tests/inventory .
+cp roles/ansible-role-slurm/tests/test.yml .
+$EDITOR inventory # put "slurm-ansible" under [install] and [compute]
+$EDITOR test.yml # for sudo set these in test.yml:
+# remote_user: $USER
+# become: True 
+ansible-playbook -i inventory test.yml --diff # Then run ansible!
+~~~~
+
+#HSLIDE
+
+![ansible-role-slurm](images/ansible_role_slurm_1.gif)
+
+#HSLIDE
+
+[![link to the asciicast](https://asciinema.org/a/c79uf7x7xagj83dcnwj2csz2s.png)](https://asciinema.org/a/c79uf7x7xagj83dcnwj2csz2s)
+
+#HSLIDE
+
+#(single node) part 2
+
+If you want 16.05 set this variable (for example in test.yml):
+
+~~~~
+     - fgci_slurmrepo_version: "fgcislurm1605"
+~~~~
+
+#HSLIDE
+
+# what are the (good) defaults?
+
+ - All the settings in slurm.conf are variables
+ - It is possible to add new settings to slurm.conf without modifying the role (add new items to an ansible variable)
+
+
+#HSLIDE
+
+# nice-to-have-list:
+ - When to restart or just SIGHUP after a config change?
+ - Topology Generation
+ - HA
+ - Complete Testing (setup a slurm cluster and even submit a job on every change to the ansible role)
+ - slurm updates
+
+#HSLIDE
+
+**how we work / release management:**
+
+~8 clusters in Finland (the ones part of FGCI) are using https://github.com/CSC-IT-Center-for-Science/fgci-ansible which uses this ansible-role-slurm role. 
+Triton is the largest cluster with ~613 nodes
+
+**ansible-galaxy** and **requirements.yml** to restrict which version/commit of an ansible role is used
+
+#HSLIDE
+
+![travis](images/TravisCI-Full-Color-7f5db09495c8b09c21cb678c4de18d21.png) 
+![waffle](images/waffle_github.png) 
+![grafana](images/grafana_logo_new_transparent.png)
+![influxdb](images/influxdb.png) 
+
+#HSLIDE
+
+#scaling
+
+ - ansible-pull
+ - local git-mirror
+ - http proxies
+
+#HSLIDE
+
+#Fin
+
+[https://gitpitch.com/CSC-IT-Center-for-Science/ansible-role-slurm/gitpitch](https://gitpitch.com/CSC-IT-Center-for-Science/ansible-role-slurm/gitpitch)
+
+@martbhell

PITCHME.yaml

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+logo : images/CSC_2012_LOGO_RGB_72dpi_10percent.jpg 
+theme-override: PITCHME.css