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ceph-ansible/roles/ceph-common/tasks/os_tuning.yml

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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
---
- name: Disable OSD directory parsing by updatedb
command: updatedb -e /var/lib/ceph
ignore_errors: true
Only change when the task returns false We only want to see things that really changed after a play completes. Signed-off-by: Sébastien Han <sebastien.han@enovance.com>
2015-04-09 00:46:54 +08:00
changed_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
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
- 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"
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
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
ignore_errors: true
Only change when the task returns false We only want to see things that really changed after a play completes. Signed-off-by: Sébastien Han <sebastien.han@enovance.com>
2015-04-09 00:46:54 +08:00
changed_when: False
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
- name: Disable swap
command: swapoff -a
when: disable_swap
ignore_errors: true
Only change when the task returns false We only want to see things that really changed after a play completes. Signed-off-by: Sébastien Han <sebastien.han@enovance.com>
2015-04-09 00:46:54 +08:00
changed_when: False
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
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
- name: Apply OS 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: >
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
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