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Adjust health check to return 503 if all backends are down
If all backends are down, the haproxy instance should not be served anymore by kubernetes and the readiness probe should fail. Furthermore, we also fail the liveness probe to enforce a restart of haproxy, as this can resolve the issue in some cases (eg. network or dns issues). Signed-off-by: Nicolas Bigler <nicolas.bigler@vshn.ch>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| affinity: | ||
| podAntiAffinity: | ||
| requiredDuringSchedulingIgnoredDuringExecution: | ||
| - labelSelector: | ||
| matchLabels: | ||
| app.kubernetes.io/instance: '{{ .Release.Name }}' | ||
| app.kubernetes.io/name: '{{ .Chart.Name }}' | ||
| topologyKey: failure-domain.beta.kubernetes.io/zone | ||
| fullnameOverride: haproxy | ||
| haproxy: | ||
| config: ldap-tls | ||
| filterproxy: | ||
| enabled: true | ||
| url: exporter-filterproxy.syn-exporter-filterproxy.svc.cluster.local:8080 | ||
| frontendPort: 3306 | ||
| galera: | ||
| balance: first | ||
| check: | ||
| mysql: | ||
| enabled: false | ||
| metrics: | ||
| enabled: true | ||
| exposeLoadbalancer: false | ||
| nodes: | ||
| - address: mariadb-0.mariadb.test-mariadb-crossplane-update.svc.cluster.local | ||
| backup: false | ||
| port: 3306 | ||
| - address: mariadb-1.mariadb.test-mariadb-crossplane-update.svc.cluster.local | ||
| backup: true | ||
| port: 3306 | ||
| - address: mariadb-2.mariadb.test-mariadb-crossplane-update.svc.cluster.local | ||
| backup: true | ||
| port: 3306 | ||
| galerak8s: | ||
| metrics: | ||
| exposeLoadbalancer: false | ||
| redisk8s: | ||
| metrics: | ||
| exposeLoadbalancer: false | ||
| securityContext: | ||
| runAsUser: 1000 | ||
| image: | ||
| registry: ghcr-docker-remote.artifactory.swisscom.com | ||
| repository: vshn/haproxy-with-mysql | ||
| tag: 1.0.0 | ||
| metrics: | ||
| serviceMonitor: | ||
| enabled: true | ||
| interval: 10s | ||
| metricRelabelings: | ||
| - action: drop | ||
| regex: haproxy_server_check_status | ||
| sourceLabels: | ||
| - __name__ | ||
| relabelings: | ||
| - replacement: standard | ||
| sourceLabels: | ||
| - __address__ | ||
| targetLabel: service_level | ||
| replicaCount: 2 | ||
| resources: | ||
| limits: | ||
| cpu: 1000m | ||
| memory: 1024Mi | ||
| requests: | ||
| cpu: 10m | ||
| memory: 300Mi | ||
| service: | ||
| port: 3306 | ||
| type: LoadBalancer |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,140 @@ | ||
| USER-SUPPLIED VALUES: | ||
| affinity: | ||
| podAntiAffinity: | ||
| requiredDuringSchedulingIgnoredDuringExecution: | ||
| - labelSelector: | ||
| matchLabels: | ||
| app.kubernetes.io/instance: '{{ .Release.Name }}' | ||
| app.kubernetes.io/name: '{{ .Chart.Name }}' | ||
| topologyKey: failure-domain.beta.kubernetes.io/zone | ||
| extraEnvVars: | ||
| - name: MARIADB_GALERA_FORCE_SAFETOBOOTSTRAP | ||
| value: "no" | ||
| extraFlags: --innodb-buffer-pool-size=300M --key-buffer-size=64K --max-allowed-packet=128M | ||
| --max-heap-table-size=1M | ||
| forceUpdate: true | ||
| forceUpdateKubectlImage: quay-remote.artifactory.swisscom.com/bitnami/kubectl:1.21.9 | ||
| fullnameOverride: mariadb | ||
| galera: | ||
| mariabackup: | ||
| forcePassword: true | ||
| password: 0yRcFQPTLLLU5JZilcNMkXJsFH048ZCL | ||
| global: | ||
| imageRegistry: remote-docker.artifactory.swisscom.com | ||
| image: | ||
| debug: true | ||
| pullPolicy: Always | ||
| tag: 10.5.13-debian-10-r82 | ||
| livenessProbe: | ||
| initialDelaySeconds: 10 | ||
| mariadbConfiguration: | | ||
| [client] | ||
| socket=/opt/bitnami/mariadb/tmp/mysql.sock | ||
| plugin_dir=/opt/bitnami/mariadb/plugin | ||
| [mysqld] | ||
| basedir=/opt/bitnami/mariadb | ||
| datadir=/bitnami/mariadb/data | ||
| plugin_dir=/opt/bitnami/mariadb/plugin | ||
| tmpdir=/opt/bitnami/mariadb/tmp | ||
| socket=/opt/bitnami/mariadb/tmp/mysql.sock | ||
| pid_file=/opt/bitnami/mariadb/tmp/mysqld.pid | ||
| ignore_db_dirs=lost+found | ||
| ## Character set | ||
| collation_server=utf8_unicode_ci | ||
| init_connect='SET NAMES utf8' | ||
| character_set_server=utf8 | ||
| ## Safety | ||
| skip_host_cache | ||
| skip_name_resolve=ON | ||
| max_allowed_packet=512M | ||
| max_connect_errors=1000000 | ||
| sysdate_is_now=ON | ||
| binlog_format=row | ||
| log_bin_trust_function_creators=ON | ||
| ## Caches and Limits | ||
| query_cache_type=OFF | ||
| query_cache_size=0 | ||
| query_cache_limit=0 | ||
| max_connections=500 | ||
| open_files_limit=65535 | ||
| tmp_table_size=512M | ||
| table_definition_cache=1000 | ||
| extra_port=33306 | ||
| extra_max_connections=10 | ||
| thread_handling=pool-of-threads | ||
| thread_pool_size=4 | ||
| ## InnoDB | ||
| innodb_autoinc_lock_mode=2 | ||
| ## Logging | ||
| log_error=/opt/bitnami/mariadb/logs/mysqld.log | ||
| slow_query_log=ON | ||
| slow_query_log_file=/opt/bitnami/mariadb/logs/mysqld.log | ||
| log_queries_not_using_indexes=OFF | ||
| log_slow_admin_statements=ON | ||
| min_examined_row_limit=2 | ||
| plugin_load_add=query_response_time | ||
| query_response_time_stats=ON | ||
| [galera] | ||
| wsrep_on=ON | ||
| wsrep_provider=/opt/bitnami/mariadb/lib/libgalera_smm.so | ||
| wsrep_sst_method=mariabackup | ||
| wsrep_cluster_address=gcomm:// | ||
| wsrep_cluster_name=galera | ||
| wsrep_sst_auth="root:" | ||
| wsrep_log_conflicts=ON | ||
| wsrep_strict_ddl=ON | ||
| wsrep_provider_options=cert.log_conflicts=yes;gcs.fc_master_slave=yes;repl.max_ws_size=134217728;gcache.size=512M;gcs.fc_limit=8 | ||
| metrics: | ||
| enabled: true | ||
| extraFlags: | ||
| - --exporter.log_slow_filter | ||
| - --collect.engine_innodb_status | ||
| image: | ||
| tag: 0.13.0-debian-10-r239 | ||
| serviceMonitor: | ||
| enabled: true | ||
| interval: 10s | ||
| metricRelabelings: | ||
| - action: drop | ||
| regex: mysql_global_status_commands_total|mysql_global_status_performance_schema_lost_total|mysql_global_status_handlers_total|mysql_info_schema_query_response_time_seconds_bucket|mysql_exporter_collector_duration_seconds|mysql_global_status_connection_errors_total | ||
| sourceLabels: | ||
| - __name__ | ||
| relabelings: | ||
| - replacement: premium | ||
| sourceLabels: | ||
| - __address__ | ||
| targetLabel: service_level | ||
| scrapeTimeout: 3s | ||
| persistence: | ||
| enabled: true | ||
| size: 10Gi | ||
| podAnnotations: | ||
| mariadb-config-revision: "2" | ||
| podDisruptionBudget: | ||
| create: true | ||
| maxUnavailable: 1 | ||
| minAvailable: "" | ||
| resources: | ||
| limits: | ||
| cpu: 1000m | ||
| memory: 2Gi | ||
| requests: | ||
| cpu: 100m | ||
| memory: 100Mi | ||
| rootUser: | ||
| forcePassword: true | ||
| password: gZ0Piyj0YK/nYgM1c5q3i2LYJrJ4Rzj9 | ||
| startupProbe: | ||
| enabled: true | ||
| failureThreshold: 108 | ||
| initialDelaySeconds: 10 |