feat: Remove PostgreSQL component (#2561)

antora.yml

@@ -62,7 +62,6 @@ asciidoc:
     platforms-ingress: Kubernetes Ingress or OpenShift Route
     platforms-name: Kubernetes or OpenShift
     platforms-namespace: Kubernetes namespace or OpenShift project
-    postgresql-image-url: quay.io/eclipse/che--centos--postgresql-96-centos13
     pre-migration-prod-checluster: eclipse-che
     pre-migration-prod-deployment: che
     pre-migration-prod-id-short: che

modules/administration-guide/nav.adoc

@@ -10,7 +10,6 @@
 **** xref:dashboard.adoc[]
 **** xref:devfile-registries.adoc[]
 **** xref:che-server.adoc[]
-**** xref:postgresql.adoc[]
 **** xref:plugin-registry.adoc[]
 *** xref:user-workspaces.adoc[]
 ** xref:calculating-che-resource-requirements.adoc[]

modules/administration-guide/pages/architecture-overview.adoc

@@ -2,7 +2,7 @@
 :description: High-level {prod-short} architecture
 :keywords: administration-guide, architecture
 :navtitle: Architecture
-:page-aliases: .:che-architecture-overview.adoc, .:high-level-che-architecture.adoc, overview:high-level-che-architecture.adoc, administration-guide:high-level-che-architecture.adoc, che-architecture-overview.adoc, .:che-architecture-overview-with-che-server.adoc, .:high-level-che-architecture-with-che-server.adoc, overview:high-level-che-architecture-with-che-server.adoc, administration-guide:high-level-che-architecture-with-che-server.adoc, .:che-architecture-overview-with-devworkspace.adoc, .:high-level-che-architecture-with-devworkspace.adoc, overview:high-level-che-architecture-with-devworkspace.adoc, administration-guide:high-level-che-architecture-with-devworkspace.adoc, architecture-overview-with-devworkspace.adoc, architecture-overview-with-che-server, server-components-with-che-server.adoc, che-workspaces-architecture-with-che-server.adoc, backup-and-recovery.adoc, supported-restic-compatible-backup-servers.adoc, backing-up-of-che-instances-to-an-sftp-backup-server.adoc, backing-up-of-che-instances-to-amazon-s3.adoc, backing-up-of-che-instances-to-a-rest-backup-server.adoc, backing-up-of-che-instances-to-the-internal-backup-server.adoc, restoring-a-che-instance-from-a-backup.adoc, backups-of-persistent-volumes.adoc, backups-of-postgresql.adoc, migration-from-postgresql-9-to-postgresql-13.adoc, readiness-init-containers.adoc, enabling-and-disabling-readiness-init-containers-for-the-operator-installer.adoc, enabling-readiness-init-containers-for-the-operator-installer.adoc, disabling-readiness-init-containers-for-the-operator-installer.adoc, enabling-and-disabling-readiness-init-containers-for-the-olm-installer.adoc, enabling-readiness-init-containers-for-the-olm-installer.adoc, disabling-readiness-init-containers-for-the-olm-installer.adoc, overview:architecture-overview.adoc, overview:che-architecture.adoc
+:page-aliases: .:che-architecture-overview.adoc, .:high-level-che-architecture.adoc, overview:high-level-che-architecture.adoc, administration-guide:high-level-che-architecture.adoc, che-architecture-overview.adoc, .:che-architecture-overview-with-che-server.adoc, .:high-level-che-architecture-with-che-server.adoc, overview:high-level-che-architecture-with-che-server.adoc, administration-guide:high-level-che-architecture-with-che-server.adoc, .:che-architecture-overview-with-devworkspace.adoc, .:high-level-che-architecture-with-devworkspace.adoc, overview:high-level-che-architecture-with-devworkspace.adoc, administration-guide:high-level-che-architecture-with-devworkspace.adoc, architecture-overview-with-devworkspace.adoc, architecture-overview-with-che-server, server-components-with-che-server.adoc, che-workspaces-architecture-with-che-server.adoc, backup-and-recovery.adoc, supported-restic-compatible-backup-servers.adoc, backing-up-of-che-instances-to-an-sftp-backup-server.adoc, backing-up-of-che-instances-to-amazon-s3.adoc, backing-up-of-che-instances-to-a-rest-backup-server.adoc, backing-up-of-che-instances-to-the-internal-backup-server.adoc, restoring-a-che-instance-from-a-backup.adoc, backups-of-persistent-volumes.adoc, readiness-init-containers.adoc, enabling-and-disabling-readiness-init-containers-for-the-operator-installer.adoc, enabling-readiness-init-containers-for-the-operator-installer.adoc, disabling-readiness-init-containers-for-the-operator-installer.adoc, enabling-and-disabling-readiness-init-containers-for-the-olm-installer.adoc, enabling-readiness-init-containers-for-the-olm-installer.adoc, disabling-readiness-init-containers-for-the-olm-installer.adoc, overview:architecture-overview.adoc, overview:che-architecture.adoc
 
 [id="architecture"]
 = {prod-short} architecture

modules/administration-guide/pages/calculating-che-resource-requirements.adoc

@@ -173,14 +173,6 @@ When this section is empty, {prod-short} only loads the implicit components.
 |500 m
 |100 m
 
-|PostgreSQL database
-|`postgres`
-|`postgres`
-|1 Gi
-|512 Mi
-|500 m
-|100 m
-
 |{devworkspace} Controller Manager
 |`{devworkspace-id}-controller-manager`
 |`{devworkspace-id}-controller`
@@ -230,9 +222,9 @@ When this section is empty, {prod-short} only loads the implicit components.
 |N/A
 
 3+>s|Total
->s|9.5 GiB
->s|1.6 GiB
->s|7.4
->s|2.31
+>s|8.5 GiB
+>s|1.1 GiB
+>s|6.9
+>s|2.21
 
 |===

modules/administration-guide/pages/che-operator.adoc

@@ -25,7 +25,6 @@ On a cluster with the {prod-short} operator, it is possible to create a `CheClus
 * xref:dashboard.adoc[]
 * xref:devfile-registries.adoc[]
 * xref:che-server.adoc[]
-* xref:postgresql.adoc[]
 * xref:plugin-registry.adoc[]
 
 .Additional resources

modules/administration-guide/pages/che-server.adoc

@@ -16,7 +16,6 @@ The {prod-short} server main functions are:
 
 The {prod-short} server is a Java web service exposing an HTTP REST API and needs access to:
 
-* xref:postgresql.adoc[]
 * Git service providers
 * {orch-name} API
 

modules/administration-guide/pages/checluster-custom-resource-fields-reference.adoc

@@ -16,7 +16,6 @@ This section describes all fields available to customize the `CheCluster` Custom
 * xref:checluster-custom-resource-components-properties-cheServer-settings[]
 * xref:checluster-custom-resource-components-properties-pluginRegistry-settings[]
 * xref:checluster-custom-resource-components-properties-devfileRegistry-settings[]
-* xref:checluster-custom-resource-components-properties-database-settings[]
 * xref:checluster-custom-resource-components-properties-dashboard-settings[]
 * xref:checluster-custom-resource-components-properties-imagePuller-settings[]
 * xref:checluster-custom-resource-components-properties-metrics-settings[]
@@ -40,8 +39,6 @@ spec:
     storage:
       pvcStrategy: 'common'
   components:
-    database:
-      externalDb: false
     metrics:
       enable: true
 ----

modules/administration-guide/pages/installing-che-using-storage-classes.adoc

@@ -18,10 +18,9 @@ To configure {prod-short} to use a configured infrastructure storage, install {p
 * A storage type
 * And many others
 
-{prod-short} has two components that require persistent volumes to store data:
+{prod-short} has one component that requires persistent volumes to store data:
 
- * A PostgreSQL database.
- * A {prod-short} workspaces. {prod-short} workspaces store source code using volumes, for example `/projects` volume.
+  * A {prod-short} workspace. {prod-short} workspaces store source code using volumes, for example `/projects` volume.
 
 [NOTE]
 ====
@@ -45,40 +44,14 @@ Use CheCluster Custom Resource definition to define storage classes:
 [source,yaml,subs="+quotes,+attributes"]
 ----
 spec:
-  components:
-    database:
-      pvc:
-        # keep blank unless you need to use a non default storage class for PostgreSQL PVC
-        storageClass: 'postgres-storage'
   devEnvironments:
     storage:
       pvc:
         # keep blank unless you need to use a non default storage class for workspace PVC(s)
         storageClass: 'workspace-storage'
 ----
 
-. Define the persistent volume for a PostgreSQL database in a `che-postgres-pv.yaml` file:
-+
-.`che-postgres-pv.yaml` file
-[source,yaml]
-----
-apiVersion: v1
-kind: PersistentVolume
-metadata:
-  name: postgres-pv-volume
-  labels:
-    type: local
-spec:
-  storageClassName: postgres-storage
-  capacity:
-    storage: 1Gi
-  accessModes:
-    - ReadWriteOnce
-  hostPath:
-    path: "/data/che/postgres"
-----
-
-. Define the persistent volume for a {prod-short} workspace in a `che-postgres-pv.yaml` file:
+. Define the persistent volume for a {prod-short} workspace in a `che-workspace-pv.yaml` file:
 +
 .`che-workspace-pv.yaml` file
 [source,yaml]
@@ -99,16 +72,16 @@ spec:
     path: "/data/che/workspace"
 ----
 
-. Bind the two persistent volumes:
+. Bind the persistent volume:
 +
 [subs="+quotes,+attributes"]
 ----
-$ kubectl apply -f che-workspace-pv.yaml -f che-postgres-pv.yaml
+$ kubectl apply -f che-workspace-pv.yaml
 ----
 
 [NOTE]
 ====
-You must provide valid file permissions for volumes. You can do it using storage class configuration or manually. To manually define permissions, define `storageClass#mountOptions` `uid` and `gid`. PostgreSQL volume requires `uid=26` and `gid=26`.
+You must provide valid file permissions for volumes. You can do it using storage class configuration or manually. To manually define permissions, define `storageClass#mountOptions` `uid` and `gid`.
 ====
 
 .Additional resources

modules/administration-guide/pages/server-components.adoc

@@ -20,5 +20,4 @@ image::architecture/{project-context}-deployments-interacting-with-devworkspace.
 * xref:dashboard.adoc[]
 * xref:devfile-registries.adoc[]
 * xref:che-server.adoc[]
-* xref:postgresql.adoc[]
 * xref:plugin-registry.adoc[]

modules/administration-guide/pages/understanding-the-checluster-custom-resource.adoc

@@ -9,7 +9,7 @@
 
 A default deployment of {prod-short} consists of a `CheCluster` Custom Resource parameterized by the {prod} Operator.
 
-The `CheCluster` Custom Resource is a {kubernetes} object. You can configure it by editing the `CheCluster` Custom Resource YAML file. This file contains sections to configure each component: `devWorkspace`, `cheServer`, `pluginRegistry`, `devfileRegistry`, `database`, `dashboard` and `imagePuller`.
+The `CheCluster` Custom Resource is a {kubernetes} object. You can configure it by editing the `CheCluster` Custom Resource YAML file. This file contains sections to configure each component: `devWorkspace`, `cheServer`, `pluginRegistry`, `devfileRegistry`, `dashboard` and `imagePuller`.
 
 The {prod} Operator translates the `CheCluster` Custom Resource into a config map usable by each component of the {prod-short} installation.
 

modules/administration-guide/partials/snip_mounting-a-secret-or-a-configmap-into-a-container.adoc

@@ -13,7 +13,6 @@
 +
 * The `<DEPLOYMENT_NAME>` corresponds to the one following deployments:
 
-** `postgres`
 ** `keycloak`
 ** `devfile-registry`
 ** `plugin-registry`

tools/checluster_docs_gen.sh

@@ -73,7 +73,6 @@ parse_content() {
   parse_section "components.properties.cheServer" "General configuration settings related to the {prod-short} server component."
   parse_section "components.properties.pluginRegistry" "Configuration settings related to the Plug-in registry component used by the {prod-short} installation."
   parse_section "components.properties.devfileRegistry" "Configuration settings related to the Devfile registry component used by the {prod-short} installation."
-  parse_section "components.properties.database" "Configuration settings related to the Database component used by the {prod-short} installation."
   parse_section "components.properties.dashboard" "Configuration settings related to the Dashboard component used by the {prod-short} installation."
   parse_section "components.properties.imagePuller" "Kubernetes Image Puller component configuration."
   parse_section "components.properties.metrics" "{prod-short} server metrics component configuration."

tools/create_architecture_diagrams.py

@@ -115,15 +115,6 @@ def architecture_diagrams(prod_short, project_context, orchestrator_name):
         che_host >> crd_workspace
         che_host >> postgres
 
-    filename = file_path + 'postgresql-interactions'
-    with Diagram(filename=filename,
-                 show=False,
-                 direction="TB",
-                 graph_attr=graph_attr):
-        che_host = Custom(prod_short + ' server', icon_path=prod_icon)
-        postgres = PostgreSQL('PostgreSQL')
-        che_host >> postgres
-
     filename = file_path + 'devfile-registry-interactions'
     with Diagram(filename=filename,
                  show=False,