234 lines
13 KiB
Go
234 lines
13 KiB
Go
package config
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import (
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"encoding/json"
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"strings"
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"time"
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"fmt"
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"github.com/zalando/postgres-operator/pkg/spec"
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"github.com/zalando/postgres-operator/pkg/util/constants"
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v1 "k8s.io/api/core/v1"
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)
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// CRD describes CustomResourceDefinition specific configuration parameters
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type CRD struct {
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ReadyWaitInterval time.Duration `name:"ready_wait_interval" default:"4s"`
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ReadyWaitTimeout time.Duration `name:"ready_wait_timeout" default:"30s"`
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ResyncPeriod time.Duration `name:"resync_period" default:"30m"`
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RepairPeriod time.Duration `name:"repair_period" default:"5m"`
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EnableCRDValidation *bool `name:"enable_crd_validation" default:"true"`
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}
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// Resources describes kubernetes resource specific configuration parameters
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type Resources struct {
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ResourceCheckInterval time.Duration `name:"resource_check_interval" default:"3s"`
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ResourceCheckTimeout time.Duration `name:"resource_check_timeout" default:"10m"`
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PodLabelWaitTimeout time.Duration `name:"pod_label_wait_timeout" default:"10m"`
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PodDeletionWaitTimeout time.Duration `name:"pod_deletion_wait_timeout" default:"10m"`
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PodTerminateGracePeriod time.Duration `name:"pod_terminate_grace_period" default:"5m"`
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SpiloFSGroup *int64 `name:"spilo_fsgroup"`
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PodPriorityClassName string `name:"pod_priority_class_name"`
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ClusterDomain string `name:"cluster_domain" default:"cluster.local"`
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SpiloPrivileged bool `name:"spilo_privileged" default:"false"`
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ClusterLabels map[string]string `name:"cluster_labels" default:"application:spilo"`
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InheritedLabels []string `name:"inherited_labels" default:""`
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DownscalerAnnotations []string `name:"downscaler_annotations"`
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ClusterNameLabel string `name:"cluster_name_label" default:"cluster-name"`
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PodRoleLabel string `name:"pod_role_label" default:"spilo-role"`
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PodToleration map[string]string `name:"toleration" default:""`
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DefaultCPURequest string `name:"default_cpu_request" default:"100m"`
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DefaultMemoryRequest string `name:"default_memory_request" default:"100Mi"`
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DefaultCPULimit string `name:"default_cpu_limit" default:"1"`
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DefaultMemoryLimit string `name:"default_memory_limit" default:"500Mi"`
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MinCPULimit string `name:"min_cpu_limit" default:"250m"`
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MinMemoryLimit string `name:"min_memory_limit" default:"250Mi"`
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PodEnvironmentConfigMap spec.NamespacedName `name:"pod_environment_configmap"`
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NodeReadinessLabel map[string]string `name:"node_readiness_label" default:""`
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MaxInstances int32 `name:"max_instances" default:"-1"`
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MinInstances int32 `name:"min_instances" default:"-1"`
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ShmVolume *bool `name:"enable_shm_volume" default:"true"`
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}
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// Auth describes authentication specific configuration parameters
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type Auth struct {
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SecretNameTemplate StringTemplate `name:"secret_name_template" default:"{username}.{cluster}.credentials.{tprkind}.{tprgroup}"`
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PamRoleName string `name:"pam_role_name" default:"zalandos"`
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PamConfiguration string `name:"pam_configuration" default:"https://info.example.com/oauth2/tokeninfo?access_token= uid realm=/employees"`
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TeamsAPIUrl string `name:"teams_api_url" default:"https://teams.example.com/api/"`
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OAuthTokenSecretName spec.NamespacedName `name:"oauth_token_secret_name" default:"postgresql-operator"`
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InfrastructureRolesSecretName spec.NamespacedName `name:"infrastructure_roles_secret_name"`
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SuperUsername string `name:"super_username" default:"postgres"`
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ReplicationUsername string `name:"replication_username" default:"standby"`
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}
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// Scalyr holds the configuration for the Scalyr Agent sidecar for log shipping:
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type Scalyr struct {
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ScalyrAPIKey string `name:"scalyr_api_key" default:""`
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ScalyrImage string `name:"scalyr_image" default:""`
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ScalyrServerURL string `name:"scalyr_server_url" default:"https://upload.eu.scalyr.com"`
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ScalyrCPURequest string `name:"scalyr_cpu_request" default:"100m"`
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ScalyrMemoryRequest string `name:"scalyr_memory_request" default:"50Mi"`
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ScalyrCPULimit string `name:"scalyr_cpu_limit" default:"1"`
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ScalyrMemoryLimit string `name:"scalyr_memory_limit" default:"500Mi"`
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}
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// LogicalBackup defines configuration for logical backup
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type LogicalBackup struct {
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LogicalBackupSchedule string `name:"logical_backup_schedule" default:"30 00 * * *"`
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LogicalBackupDockerImage string `name:"logical_backup_docker_image" default:"registry.opensource.zalan.do/acid/logical-backup"`
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LogicalBackupS3Bucket string `name:"logical_backup_s3_bucket" default:""`
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LogicalBackupS3Region string `name:"logical_backup_s3_region" default:""`
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LogicalBackupS3Endpoint string `name:"logical_backup_s3_endpoint" default:""`
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LogicalBackupS3AccessKeyID string `name:"logical_backup_s3_access_key_id" default:""`
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LogicalBackupS3SecretAccessKey string `name:"logical_backup_s3_secret_access_key" default:""`
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LogicalBackupS3SSE string `name:"logical_backup_s3_sse" default:""`
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}
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// Operator options for connection pooler
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type ConnectionPooler struct {
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NumberOfInstances *int32 `name:"connection_pooler_number_of_instances" default:"2"`
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Schema string `name:"connection_pooler_schema" default:"pooler"`
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User string `name:"connection_pooler_user" default:"pooler"`
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Image string `name:"connection_pooler_image" default:"registry.opensource.zalan.do/acid/pgbouncer"`
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Mode string `name:"connection_pooler_mode" default:"transaction"`
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MaxDBConnections *int32 `name:"connection_pooler_max_db_connections" default:"60"`
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ConnectionPoolerDefaultCPURequest string `name:"connection_pooler_default_cpu_request" default:"500m"`
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ConnectionPoolerDefaultMemoryRequest string `name:"connection_pooler_default_memory_request" default:"100Mi"`
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ConnectionPoolerDefaultCPULimit string `name:"connection_pooler_default_cpu_limit" default:"1"`
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ConnectionPoolerDefaultMemoryLimit string `name:"connection_pooler_default_memory_limit" default:"100Mi"`
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}
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// Config describes operator config
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type Config struct {
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CRD
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Resources
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Auth
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Scalyr
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LogicalBackup
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ConnectionPooler
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WatchedNamespace string `name:"watched_namespace"` // special values: "*" means 'watch all namespaces', the empty string "" means 'watch a namespace where operator is deployed to'
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KubernetesUseConfigMaps bool `name:"kubernetes_use_configmaps" default:"false"`
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EtcdHost string `name:"etcd_host" default:""` // special values: the empty string "" means Patroni will use K8s as a DCS
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DockerImage string `name:"docker_image" default:"registry.opensource.zalan.do/acid/spilo-cdp-12:1.6-p115"`
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// deprecated in favour of SidecarContainers
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SidecarImages map[string]string `name:"sidecar_docker_images"`
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SidecarContainers []v1.Container `name:"sidecars"`
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PodServiceAccountName string `name:"pod_service_account_name" default:"postgres-pod"`
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// value of this string must be valid JSON or YAML; see initPodServiceAccount
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PodServiceAccountDefinition string `name:"pod_service_account_definition" default:""`
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PodServiceAccountRoleBindingDefinition string `name:"pod_service_account_role_binding_definition" default:""`
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MasterPodMoveTimeout time.Duration `name:"master_pod_move_timeout" default:"20m"`
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DbHostedZone string `name:"db_hosted_zone" default:"db.example.com"`
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AWSRegion string `name:"aws_region" default:"eu-central-1"`
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WALES3Bucket string `name:"wal_s3_bucket"`
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LogS3Bucket string `name:"log_s3_bucket"`
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KubeIAMRole string `name:"kube_iam_role"`
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AdditionalSecretMount string `name:"additional_secret_mount"`
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AdditionalSecretMountPath string `name:"additional_secret_mount_path" default:"/meta/credentials"`
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DebugLogging bool `name:"debug_logging" default:"true"`
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EnableDBAccess bool `name:"enable_database_access" default:"true"`
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EnableTeamsAPI bool `name:"enable_teams_api" default:"true"`
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EnableTeamSuperuser bool `name:"enable_team_superuser" default:"false"`
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TeamAdminRole string `name:"team_admin_role" default:"admin"`
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EnableAdminRoleForUsers bool `name:"enable_admin_role_for_users" default:"true"`
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EnableMasterLoadBalancer bool `name:"enable_master_load_balancer" default:"true"`
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EnableReplicaLoadBalancer bool `name:"enable_replica_load_balancer" default:"false"`
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CustomServiceAnnotations map[string]string `name:"custom_service_annotations"`
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CustomPodAnnotations map[string]string `name:"custom_pod_annotations"`
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EnablePodAntiAffinity bool `name:"enable_pod_antiaffinity" default:"false"`
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PodAntiAffinityTopologyKey string `name:"pod_antiaffinity_topology_key" default:"kubernetes.io/hostname"`
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// deprecated and kept for backward compatibility
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EnableLoadBalancer *bool `name:"enable_load_balancer"`
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MasterDNSNameFormat StringTemplate `name:"master_dns_name_format" default:"{cluster}.{team}.{hostedzone}"`
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ReplicaDNSNameFormat StringTemplate `name:"replica_dns_name_format" default:"{cluster}-repl.{team}.{hostedzone}"`
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PDBNameFormat StringTemplate `name:"pdb_name_format" default:"postgres-{cluster}-pdb"`
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EnablePodDisruptionBudget *bool `name:"enable_pod_disruption_budget" default:"true"`
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EnableInitContainers *bool `name:"enable_init_containers" default:"true"`
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EnableSidecars *bool `name:"enable_sidecars" default:"true"`
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Workers uint32 `name:"workers" default:"4"`
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APIPort int `name:"api_port" default:"8080"`
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RingLogLines int `name:"ring_log_lines" default:"100"`
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ClusterHistoryEntries int `name:"cluster_history_entries" default:"1000"`
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TeamAPIRoleConfiguration map[string]string `name:"team_api_role_configuration" default:"log_statement:all"`
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PodTerminateGracePeriod time.Duration `name:"pod_terminate_grace_period" default:"5m"`
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PodManagementPolicy string `name:"pod_management_policy" default:"ordered_ready"`
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ProtectedRoles []string `name:"protected_role_names" default:"admin"`
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PostgresSuperuserTeams []string `name:"postgres_superuser_teams" default:""`
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SetMemoryRequestToLimit bool `name:"set_memory_request_to_limit" default:"false"`
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EnableLazySpiloUpgrade bool `name:"enable_lazy_spilo_upgrade" default:"false"`
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}
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// MustMarshal marshals the config or panics
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func (c Config) MustMarshal() string {
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b, err := json.MarshalIndent(c, "", "\t")
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if err != nil {
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panic(err)
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}
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return string(b)
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}
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// NewFromMap creates Config from the map
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func NewFromMap(m map[string]string) *Config {
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cfg := Config{}
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fields, _ := structFields(&cfg)
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for _, structField := range fields {
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key := strings.ToLower(structField.Name)
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value, ok := m[key]
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if !ok && structField.Default != "" {
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value = structField.Default
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}
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if value == "" {
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continue
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}
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err := processField(value, structField.Field)
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if err != nil {
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panic(err)
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}
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}
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if err := validate(&cfg); err != nil {
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panic(err)
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}
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return &cfg
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}
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// Copy creates a copy of the config
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func Copy(c *Config) Config {
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cfg := *c
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cfg.ClusterLabels = make(map[string]string, len(c.ClusterLabels))
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for k, v := range c.ClusterLabels {
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cfg.ClusterLabels[k] = v
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}
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return cfg
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}
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func validate(cfg *Config) (err error) {
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if cfg.MinInstances > 0 && cfg.MaxInstances > 0 && cfg.MinInstances > cfg.MaxInstances {
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err = fmt.Errorf("minimum number of instances %d is set higher than the maximum number %d",
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cfg.MinInstances, cfg.MaxInstances)
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}
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if cfg.Workers == 0 {
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err = fmt.Errorf("number of workers should be higher than 0")
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}
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if *cfg.ConnectionPooler.NumberOfInstances < constants.ConnectionPoolerMinInstances {
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msg := "number of connection pooler instances should be higher than %d"
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err = fmt.Errorf(msg, constants.ConnectionPoolerMinInstances)
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}
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if cfg.ConnectionPooler.User == cfg.SuperUsername {
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msg := "Connection pool user is not allowed to be the same as super user, username: %s"
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err = fmt.Errorf(msg, cfg.ConnectionPooler.User)
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}
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return
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}
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