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with garbd's suspect_timeout In openstack-helm-infra, it launch evs.suspect_timeout=PT30S for mariadb-server in configmap, mariadb-etc. This setting is for three mariadb-server pod deployment, every mariadb-server with same setting suspect_timeout=30s. But after change to two mariadb-server and one garbd arbitrator. Setting in configmap mariadb-etc evs.suspect_timeout=PT30S, only takes effect for 2 mariadb-server, for garbd arbitrator, it use galera default setting evs.suspect_timeout=PT5S. If mariadb-server-1 exit abnormal, after 5s, garbd arbitrator suspects mariadb-server-1 is dead, but as not reach 30s, mariadb-server-0 thinks mariadb-server-1 is not dead. In this state, quorum fail, garbd arbitrator and mariadb-server-0 both set to none primary component, service down. For fix solution, set value.conf.data.config_override to override wsrep_provider_option in mariadb helm chart, which makes garbd arbitrator and mariadb-server launch with same setting for "evs.suspect_timeout=PT5S", default value. By this way, mariadb server recovery time will also improve. To update setting for "evs.suspect_timeout", it should both update override for mariadb and garbd helm chart. Setting for "gmcast.listen_addr=tcp://0.0.0.0:<port>", takes effect for both ipv4 and ipv6. So keeps such setting. Reference link for wsrep option and galera cluster quorum https://mariadb.com/kb/en/wsrep_provider_options/ https://galeracluster.com/library/documentation/weighted-quorum.html Closes-Bug: 1888546 Change-Id: I06983cf0d91d4d9aa88f352e64b1e6571b816ec6 Signed-off-by: Martin, Chen <haochuan.z.chen@intel.com>changes/86/744486/6
Martin, Chen
2 years ago
4 changed files with 76 additions and 1 deletions
@ -0,0 +1,59 @@
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From c75c04ea1c2250f16c1aabe57a2d4e94d986a90e Mon Sep 17 00:00:00 2001
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From: "Chen, Haochuan Z" <haochuan.z.chen@intel.com>
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Date: Wed, 5 Aug 2020 03:08:14 +0000
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Subject: [PATCH 13/13] enable Values.conf.database.config_override for mariadb
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option wsrep_provider_options override
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---
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mariadb/templates/configmap-etc.yaml | 5 ++---
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mariadb/templates/statefulset.yaml | 8 +++++++-
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2 files changed, 9 insertions(+), 4 deletions(-)
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diff --git a/mariadb/templates/configmap-etc.yaml b/mariadb/templates/configmap-etc.yaml
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index 53072f4..7bdfd8a 100644
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--- a/mariadb/templates/configmap-etc.yaml
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+++ b/mariadb/templates/configmap-etc.yaml
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@@ -26,14 +26,13 @@ data:
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{{- include "helm-toolkit.snippets.values_template_renderer" (dict "envAll" $envAll "template" ( index $envAll.Values.conf.database "00_base" ) "key" "00-base.cnf" ) | indent 2 }}
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{{- if $envAll.Values.conf.database.config_override }}
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{{- include "helm-toolkit.snippets.values_template_renderer" (dict "envAll" $envAll "template" ( index $envAll.Values.conf.database "config_override" ) "key" "20-override.cnf" ) | indent 2 }}
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-{{- else }}
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+{{- end }}
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# A user override for conf.database.config_override might break the IPv6 system overrides, need including below ipv6
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# config for ipv6 case in user override as well.
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{{- if $envAll.Values.manifests.config_ipv6 }}
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- 20-override.cnf: |
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+ 30-override.cnf: |
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[mysqld]
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bind_address=::
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{{- end }}
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-{{- end }}
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{{- include "helm-toolkit.snippets.values_template_renderer" (dict "envAll" $envAll "template" ( index $envAll.Values.conf.database "99_force" ) "key" "99-force.cnf" ) | indent 2 }}
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{{- end }}
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diff --git a/mariadb/templates/statefulset.yaml b/mariadb/templates/statefulset.yaml
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index 3ef7383..88439e2 100644
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--- a/mariadb/templates/statefulset.yaml
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+++ b/mariadb/templates/statefulset.yaml
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@@ -216,12 +216,18 @@ spec:
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mountPath: /etc/mysql/conf.d/00-base.cnf
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subPath: 00-base.cnf
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readOnly: true
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- {{- if or (.Values.conf.database.config_override) (.Values.manifests.config_ipv6) }}
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+ {{- if .Values.conf.database.config_override }}
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- name: mariadb-etc
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mountPath: /etc/mysql/conf.d/20-override.cnf
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subPath: 20-override.cnf
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readOnly: true
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{{- end }}
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+ {{- if .Values.manifests.config_ipv6 }}
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+ - name: mariadb-etc
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+ mountPath: /etc/mysql/conf.d/30-override.cnf
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+ subPath: 30-override.cnf
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+ readOnly: true
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+ {{- end }}
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- name: mariadb-etc
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mountPath: /etc/mysql/conf.d/99-force.cnf
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subPath: 99-force.cnf
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--
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1.8.3.1
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