78ed74957d
The calculation of the keepalived priority depended on the set of hosts in the ansible_play_hosts variable. This meant that priorites changed when the playbook was limited to only run on a subset of the hosts in the "haproxy" group (eg. when reinstalling just one node). This change replaces ansible_play_hosts by groups["haproxy"] so that the priority calculation is stable as long as the set of haproxy nodes does not change. It also simplifies the priority calculation without changeing the result. This change does not change the configuration in case the playbook is run without --limit and ensures that the configuration does not change if it is run with --limit. Change-Id: I378351954fbed7b1fc31303c60e4575ddad9cf1d
70 lines
3.3 KiB
YAML
70 lines
3.3 KiB
YAML
---
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# Copyright 2015, Jean-Philippe Evrard <jean-philippe@evrard.me>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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keepalived_ping_address: "193.0.14.129"
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keepalived_ping_count: 1
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keepalived_ping_interval: 10
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keepalived_ubuntu_src: "uca"
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keepalived_uca_apt_repo_url: "{{ uca_apt_repo_url | default('http://ubuntu-cloud.archive.canonical.com/ubuntu') }}"
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keepalived_sync_groups:
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haproxy:
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instances:
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- external
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- internal
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notify_script: /etc/keepalived/haproxy_notify.sh
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##if a src_*_script is defined, it will be uploaded from src_*_script
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##on the deploy host to the *_script location. Make sure *_script is
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##a location in that case.
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src_notify_script: "{{ playbook_dir }}/../scripts/keepalived_haproxy_notifications.sh"
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keepalived_scripts:
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haproxy_check_script:
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check_script: "kill -0 `cat /var/run/haproxy.pid`"
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pingable_check_script:
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check_script: "ping -c {{ keepalived_ping_count }} {{ keepalived_ping_address }} 1>&2"
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interval: "{{ keepalived_ping_interval }}"
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fall: 2
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rise: 4
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# If you have more than 5 keepalived nodes, you should build your own script
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# (handling master and backups servers), and replace in keepalived_instances:
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# priority: "{{ (groups['haproxy']|length-groups['haproxy'].index(inventory_hostname)*50 }}"
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# by
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# priority: "{{ (groups['haproxy'].index(inventory_hostname) == 0) | ternary('100','50') }}"
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keepalived_instances:
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external:
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interface: "{{ haproxy_keepalived_external_interface | default(management_bridge) }}"
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state: "{{ (groups['haproxy'].index(inventory_hostname) == 0) | ternary('MASTER', 'BACKUP') }}"
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virtual_router_id: "{{ haproxy_keepalived_external_virtual_router_id | default ('10') }}"
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priority: "{{ (groups['haproxy']|length-groups['haproxy'].index(inventory_hostname))*50 }}"
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authentication_password: "{{ haproxy_keepalived_authentication_password }}"
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vips:
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- "{{ haproxy_keepalived_external_vip_cidr | default('169.254.1.1/24') }} dev {{ haproxy_keepalived_external_interface | default(management_bridge) }}"
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track_scripts:
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- haproxy_check_script
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- pingable_check_script
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internal:
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interface: "{{ haproxy_keepalived_internal_interface | default(management_bridge) }}"
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state: "{{ (groups['haproxy'].index(inventory_hostname) == 0) | ternary('MASTER', 'BACKUP') }}"
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virtual_router_id: "{{ haproxy_keepalived_internal_virtual_router_id | default ('11') }}"
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priority: "{{ (groups['haproxy']|length-groups['haproxy'].index(inventory_hostname))*50 }}"
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authentication_password: "{{ haproxy_keepalived_authentication_password }}"
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track_scripts:
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- haproxy_check_script
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- pingable_check_script
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vips:
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- "{{ haproxy_keepalived_internal_vip_cidr | default('169.254.2.1/24') }} dev {{ haproxy_keepalived_internal_interface | default(management_bridge) }}"
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