ceph-ansible/roles/ceph-common/tasks/misc/system_tuning.yml

---
- name: disable osd directory parsing by updatedb
  command: updatedb -e /var/lib/ceph
  changed_when: false
  failed_when: false

- name: disable transparent hugepage
  command: "echo never > /sys/kernel/mm/transparent_hugepage/enabled"
  changed_when: false
  failed_when: false
  when: disable_transparent_hugepage

- name: disable swap
  command: swapoff -a
  changed_when: false
  failed_when: false
  when: disable_swap

- name: apply operating system tuning
  sysctl: >
    name="{{ item.name }}"
    value="{{ item.value }}"
    state=present
    sysctl_file=/etc/sysctl.conf
    ignoreerrors=yes
  with_items: os_tuning_params
Make OS tuning var configurable and file re-ordering Depending on the OS you are runnning on you should be able to configure these values. Re-ordering file for clarity as well. Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-07 18:41:35 +08:00			`---`
Re-arrange roles Trying to add more clarity in the role's task structure. Signed-off-by: leseb <seb@redhat.com> 2015-07-24 02:01:43 +08:00			`- name: disable osd directory parsing by updatedb`
Make OS tuning var configurable and file re-ordering Depending on the OS you are runnning on you should be able to configure these values. Re-ordering file for clarity as well. Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-07 18:41:35 +08:00			`command: updatedb -e /var/lib/ceph`
Cosmetic Add more visibility for the 'when' statement. Signed-off-by: leseb <seb@redhat.com> 2015-06-26 06:26:03 +08:00			`changed_when: false`
Failed_when instead of ignore_errors Changed ignore_errors to failed_when so the output doesn't show in red. 2015-07-29 00:21:15 +08:00			`failed_when: false`
Make OS tuning var configurable and file re-ordering Depending on the OS you are runnning on you should be able to configure these values. Re-ordering file for clarity as well. Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-07 18:41:35 +08:00
Consmetic changes This branch has been sitting on my local repo for a while. I guess I had time to spend on a plane :). Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-05-16 00:27:41 +08:00			`- name: disable transparent hugepage`
Fix transparent huge page sys path The old path was meant for old kernels... Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-15 17:58:45 +08:00			`command: "echo never > /sys/kernel/mm/transparent_hugepage/enabled"`
Cosmetic Add more visibility for the 'when' statement. Signed-off-by: leseb <seb@redhat.com> 2015-06-26 06:26:03 +08:00			`changed_when: false`
Failed_when instead of ignore_errors Changed ignore_errors to failed_when so the output doesn't show in red. 2015-07-29 00:21:15 +08:00			`failed_when: false`
Cosmetic Add more visibility for the 'when' statement. Signed-off-by: leseb <seb@redhat.com> 2015-06-26 06:26:03 +08:00			`when: disable_transparent_hugepage`
Ability to disable swap With enough memory we will probably not need any swap. Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-15 18:42:51 +08:00
Consmetic changes This branch has been sitting on my local repo for a while. I guess I had time to spend on a plane :). Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-05-16 00:27:41 +08:00			`- name: disable swap`
Ability to disable swap With enough memory we will probably not need any swap. Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-15 18:42:51 +08:00			`command: swapoff -a`
Cosmetic Add more visibility for the 'when' statement. Signed-off-by: leseb <seb@redhat.com> 2015-06-26 06:26:03 +08:00			`changed_when: false`
Failed_when instead of ignore_errors Changed ignore_errors to failed_when so the output doesn't show in red. 2015-07-29 00:21:15 +08:00			`failed_when: false`
Cosmetic Add more visibility for the 'when' statement. Signed-off-by: leseb <seb@redhat.com> 2015-06-26 06:26:03 +08:00			`when: disable_swap`
Ability to disable transparent hugepage In storage world it's often recommended to disable transparent hugepages as they will tend to lower performance. Note that this change won't survive reboot. There are several ways to disable this permanently such as: * rc.local * grub boot line It's a bit tricky to do this in Ansible since it really depends on the OS you're running on. Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-13 18:09:53 +08:00
Re-arrange roles Trying to add more clarity in the role's task structure. Signed-off-by: leseb <seb@redhat.com> 2015-07-24 02:01:43 +08:00			`- name: apply operating system tuning`
Make OS tuning var configurable and file re-ordering Depending on the OS you are runnning on you should be able to configure these values. Re-ordering file for clarity as well. Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-07 18:41:35 +08:00			`sysctl: >`
fixing sysctl command to take whitespace-separated multi values for a key 2015-09-02 15:20:03 +08:00			`name="{{ item.name }}"`
			`value="{{ item.value }}"`
Make OS tuning var configurable and file re-ordering Depending on the OS you are runnning on you should be able to configure these values. Re-ordering file for clarity as well. Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-07 18:41:35 +08:00			`state=present`
			`sysctl_file=/etc/sysctl.conf`
sysctl ignoreerrors some key fails under CentOS 6 2015-04-15 03:46:03 +08:00			`ignoreerrors=yes`
Restructure OS tuning and add new value We now use a single task and loop over a set of params, it's easier to add now params. Setting zone_reclaim_mode to 0. See the discussion on the Ceph ML: http://lists.ceph.com/pipermail/ceph-users-ceph.com/2013-December/036211.html Signed-off-by: Sébastien Han <sebastien.han@enovance.com> 2015-01-13 17:31:26 +08:00			`with_items: os_tuning_params`