Add Ceph support for single-node clusters
Ensures that the pool default size/min size is set to something reasonable for a single node (effective RAID-1) and replace teh default CRUSH replicate_rule set for this situation with one choosing OSD instead of host as the default.
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@ -80,6 +80,16 @@
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- "bluestore cache autotune = true"
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- "rbd default features = 5"
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- name: add single-node cluster options
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lineinfile:
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dest: /tmp/ceph-bootstrap/ceph.conf
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line: "{{ item }}"
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state: present
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with_items:
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- "osd pool default size = 2"
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- "osd pool default min size = 1"
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when: "{{ pvc_nodes | length }} == 1"
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- name: add memory limit if requested
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lineinfile:
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dest: /tmp/ceph-bootstrap/ceph.conf
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@ -129,6 +129,15 @@
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- ceph-mon@{{ ansible_hostname }}
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- ceph-mgr@{{ ansible_hostname }}
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# Single-node cluster ruleset
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- name: remove default CRUSH replicated_rule ruleset
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command: ceph osd crush rule rm replicated_rule
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when: "{{ pvc_nodes | length }} == 1"
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- name: add single-node CRUSH replicated_rule ruleset
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command: ceph osd crush rule create-replicated replicated_rule default osd
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when: "{{ pvc_nodes | length }} == 1"
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# System OSD CPU shielding activation
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- block:
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- name: install packages
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