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ceph-mds: Increase cpu limit to 4 

In containerized deployment the default mds cpu quota is too low
for production environment.
This is causing performance degradation compared to bare-metal.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1695850

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
pull/3924/head
Dimitri Savineau 2019-04-23 15:54:38 -04:00 committed by Guillaume Abrioux
parent c17106874c
commit 1999cf3d19
3 changed files with 5 additions and 4 deletions
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2
group_vars/mdss.yml.sample
View File

@ -28,7 +28,7 @@ dummy:
# Default values are based from: https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/2/html/red_hat_ceph_storage_hardware_guide/minimum_recommendations # Default values are based from: https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/2/html/red_hat_ceph_storage_hardware_guide/minimum_recommendations
# These options can be passed using the 'ceph_mds_docker_extra_env' variable. # These options can be passed using the 'ceph_mds_docker_extra_env' variable.
#ceph_mds_docker_memory_limit: "{{ ansible_memtotal_mb }}m" #ceph_mds_docker_memory_limit: "{{ ansible_memtotal_mb }}m"
#ceph_mds_docker_cpu_limit: 1 #ceph_mds_docker_cpu_limit: 4
# we currently for MDS_NAME to hostname because of a bug in ceph-docker # we currently for MDS_NAME to hostname because of a bug in ceph-docker
# fix here: https://github.com/ceph/ceph-docker/pull/770 # fix here: https://github.com/ceph/ceph-docker/pull/770

2
roles/ceph-mds/defaults/main.yml
View File

@ -20,7 +20,7 @@ copy_admin_key: false
# Default values are based from: https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/2/html/red_hat_ceph_storage_hardware_guide/minimum_recommendations # Default values are based from: https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/2/html/red_hat_ceph_storage_hardware_guide/minimum_recommendations
# These options can be passed using the 'ceph_mds_docker_extra_env' variable. # These options can be passed using the 'ceph_mds_docker_extra_env' variable.
ceph_mds_docker_memory_limit: "{{ ansible_memtotal_mb }}m" ceph_mds_docker_memory_limit: "{{ ansible_memtotal_mb }}m"
ceph_mds_docker_cpu_limit: 1 ceph_mds_docker_cpu_limit: 4
# we currently for MDS_NAME to hostname because of a bug in ceph-docker # we currently for MDS_NAME to hostname because of a bug in ceph-docker
# fix here: https://github.com/ceph/ceph-docker/pull/770 # fix here: https://github.com/ceph/ceph-docker/pull/770

5
roles/ceph-mds/templates/ceph-mds.service.j2
View File

@ -3,6 +3,7 @@ Description=Ceph MDS
{% if container_binary == 'docker' %} {% if container_binary == 'docker' %}
After=docker.service After=docker.service
{% endif %} {% endif %}
{% set cpu_limit = ansible_processor_vcpus|int if ceph_mds_docker_cpu_limit|int > ansible_processor_vcpus|int else ceph_mds_docker_cpu_limit|int %}
[Service] [Service]
EnvironmentFile=-/etc/environment EnvironmentFile=-/etc/environment
@ -11,9 +12,9 @@ ExecStartPre=-/usr/bin/{{ container_binary }} rm ceph-mds-{{ ansible_hostname }}
ExecStart=/usr/bin/{{ container_binary }} run --rm --net=host \ ExecStart=/usr/bin/{{ container_binary }} run --rm --net=host \
--memory={{ ceph_mds_docker_memory_limit }} \ --memory={{ ceph_mds_docker_memory_limit }} \
{% if (container_binary == 'docker' and ceph_docker_version.split('.')[0] is version_compare('13', '>=')) or container_binary == 'podman' -%} {% if (container_binary == 'docker' and ceph_docker_version.split('.')[0] is version_compare('13', '>=')) or container_binary == 'podman' -%}
--cpus={{ ceph_mds_docker_cpu_limit }} \ --cpus={{ cpu_limit }} \
{% else -%} {% else -%}
--cpu-quota={{ ceph_mds_docker_cpu_limit * 100000 }} \ --cpu-quota={{ cpu_limit * 100000 }} \
{% endif -%} {% endif -%}
-v /var/lib/ceph:/var/lib/ceph:z \ -v /var/lib/ceph:/var/lib/ceph:z \
-v /etc/ceph:/etc/ceph:z \ -v /etc/ceph:/etc/ceph:z \