put SetMemoryRequestToLimit back to general config and fix docs

charts/postgres-operator/values-crd.yaml

@@ -28,6 +28,9 @@ configGeneral:
   # period between consecutive sync requests
   resync_period: 30m
   # map of sidecar names to docker images
+  # can prevent certain cases of memory overcommitment
+  # set_memory_request_to_limit: false
+
   # sidecar_docker_images
   #  example: "exampleimage:exampletag"
 
@@ -103,8 +106,6 @@ configPostgresPodResources:
   default_memory_limit: 1Gi
   # memory request value for the postgres containers
   default_memory_request: 100Mi
-  # can prevent certain cases of memory overcommitment
-  # set_memory_request_to_limit: false
 
 # timeouts related to some operator actions
 configTimeouts:

charts/postgres-operator/values.yaml

@@ -27,6 +27,9 @@ configGeneral:
   repair_period: 5m
   # period between consecutive sync requests
   resync_period: 30m
+  # can prevent certain cases of memory overcommitment
+  # set_memory_request_to_limit: "false"
+
   # map of sidecar names to docker images
   # sidecar_docker_images: ""
 
@@ -99,8 +102,6 @@ configPostgresPodResources:
   default_memory_limit: 1Gi
   # memory request value for the postgres containers
   default_memory_request: 100Mi
-  # can prevent certain cases of memory overcommitment
-  # set_memory_request_to_limit: "false"
 
 # timeouts related to some operator actions
 configTimeouts:

docs/reference/operator_parameters.md

@@ -105,6 +105,17 @@ Those are top-level keys, containing both leaf keys and groups.
 * **repair_period**
   period between consecutive repair requests. The default is `5m`.
 
+* **set_memory_request_to_limit**
+  Set `memory_request` to `memory_limit` for all Postgres clusters (the default
+  value is also increased). This prevents certain cases of memory overcommitment
+  at the cost of overprovisioning memory and potential scheduling problems for
+  containers with high memory limits due to the lack of memory on Kubernetes
+  cluster nodes. This affects all containers created by the operator (Postgres,
+  Scalyr sidecar, and other sidecars); to set resources for the operator's own
+  container, change the [operator deployment manually](https://github.com/zalando/postgres-operator/blob/master/manifests/postgres-operator.yaml#L13).
+  The default is `false`.
+
+
 ## Postgres users
 
 Parameters describing Postgres users. In a CRD-configuration, they are grouped
@@ -288,16 +299,6 @@ CRD-based configuration.
   memory limits for the postgres containers, unless overridden by cluster-specific
   settings. The default is `1Gi`.
 
-* **set_memory_request_to_limit**
-  Set `memory_request` to `memory_limit` for all Postgres clusters (the default
-  value is also increased). This prevents certain cases of memory overcommitment
-  at the cost of overprovisioning memory and potential scheduling problems for
-  containers with high memory limits due to the lack of memory on Kubernetes
-  cluster nodes. This affects all containers created by the operator (Postgres,
-  Scalyr sidecar, and other sidecars); to set resources for the operator's own
-  container, change the [operator deployment manually](https://github.com/zalando/postgres-operator/blob/master/manifests/postgres-operator.yaml#L13).
-  The default is `false`.
-
 * **enable_shm_volume**
   Instruct operator to start any new database pod without limitations on shm
   memory. If this option is enabled, to the target database pod will be mounted

manifests/postgresql-operator-default-configuration.yaml

@@ -9,6 +9,7 @@ configuration:
   min_instances: -1
   resync_period: 30m
   repair_period: 5m
+  # set_memory_request_to_limit: false
   # sidecar_docker_images:
   #   example: "exampleimage:exampletag"
   workers: 4
@@ -45,7 +46,6 @@ configuration:
     default_cpu_request: 100m
     default_memory_limit: 1Gi
     default_memory_request: 100Mi
-    # set_memory_request_to_limit: false
   timeouts:
     pod_label_wait_timeout: 10m
     pod_deletion_wait_timeout: 10m

pkg/apis/acid.zalan.do/v1/operator_configuration_type.go

@@ -76,7 +76,6 @@ type PostgresPodResourcesDefaults struct {
 	DefaultMemoryRequest string `json:"default_memory_request,omitempty"`
 	DefaultCPULimit      string `json:"default_cpu_limit,omitempty"`
 	DefaultMemoryLimit   string `json:"default_memory_limit,omitempty"`
-	SetMemoryRequestToLimit bool   `json:"set_memory_request_to_limit,omitempty"`
 }
 
 // OperatorTimeouts defines the timeout of ResourceCheck, PodWait, ReadyWait
@@ -157,6 +156,7 @@ type OperatorConfigurationData struct {
 	MaxInstances               int32                              `json:"max_instances,omitempty"`
 	ResyncPeriod               Duration                           `json:"resync_period,omitempty"`
 	RepairPeriod               Duration                           `json:"repair_period,omitempty"`
+	SetMemoryRequestToLimit    bool                               `json:"set_memory_request_to_limit,omitempty"`
 	Sidecars                   map[string]string                  `json:"sidecar_docker_images,omitempty"`
 	PostgresUsersConfiguration PostgresUsersConfiguration         `json:"users"`
 	Kubernetes                 KubernetesMetaConfiguration        `json:"kubernetes"`

pkg/controller/operator_config.go

@@ -32,6 +32,7 @@ func (c *Controller) importConfigurationFromCRD(fromCRD *acidv1.OperatorConfigur
 	result.MaxInstances = fromCRD.MaxInstances
 	result.ResyncPeriod = time.Duration(fromCRD.ResyncPeriod)
 	result.RepairPeriod = time.Duration(fromCRD.RepairPeriod)
+	result.SetMemoryRequestToLimit = fromCRD.SetMemoryRequestToLimit
 	result.Sidecars = fromCRD.Sidecars
 
 	// user config
@@ -69,7 +70,6 @@ func (c *Controller) importConfigurationFromCRD(fromCRD *acidv1.OperatorConfigur
 	result.DefaultMemoryRequest = fromCRD.PostgresPodResources.DefaultMemoryRequest
 	result.DefaultCPULimit = fromCRD.PostgresPodResources.DefaultCPULimit
 	result.DefaultMemoryLimit = fromCRD.PostgresPodResources.DefaultMemoryLimit
-	result.SetMemoryRequestToLimit = fromCRD.PostgresPodResources.SetMemoryRequestToLimit
 
 	// timeout config
 	result.ResourceCheckInterval = time.Duration(fromCRD.Timeouts.ResourceCheckInterval)