Adapt to use docker image

CHANGELOG.md

@@ -4,8 +4,13 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
-## [0.1.0] - 2021-10-27
+- `operator-rs` `0.3.0` → `0.4.0` ([#20]).
+- Adapted pod image and container command to docker image ([#20]).
+- Adapted documentation to represent new workflow with docker images ([#20]). 
+
+[#20]: https://github.com/stackabletech/hdfs-operator/pull/20
 
+## [0.1.0] - 2021-10-27
 
 ### Changed
 - Switched to operator-rs tag 0.3.0 ([#13])

README.adoc

@@ -2,6 +2,4 @@
 
 This is a Kubernetes Operator to manage Apache HDFS ensembles.
 
-It is written by https://www.stackable.de[Stackable] in Rust, and it is supposed to be used with the https://github.com/stackabletech/agent[Stackable Agent] instead of the Kubernetes kubelet.
-
 The docs can be found in the `docs` subdirectory, and they are published together with docs for all other Stackable products at https://docs.stackable.tech.

deploy/config-spec/properties.yaml

@@ -7,11 +7,6 @@ spec:
         examples:
           - "ldap://[2001:db8::7]/c=GB?objectClass?one"
         comment: "Specified in https://tools.ietf.org/html/rfc3986#appendix-B"
-    - unit: &unitDirectory
-        name: "directory"
-        regex: "^/|(/[\\w-]+)+$"
-        examples:
-          - "/tmp/xyz"
 
 properties:
   - property:
@@ -156,22 +151,3 @@ properties:
           required: true
       asOfVersion: "0.0.0"
       description: "The datanode http server address and port."
-
-  ###################################################################################################
-  # env vars
-  ###################################################################################################
-  - property: &javaHome
-      propertyNames:
-        - name: "JAVA_HOME"
-          kind:
-            type: "env"
-      datatype:
-        type: "string"
-        unit: *unitDirectory
-      roles:
-        - name: "namenode"
-          required: true
-        - name: "datanode"
-          required: true
-      asOfVersion: "0.0.0"
-      description: "Points to the Java installation folder."

deploy/crd/hdfscluster.crd.yaml

@@ -85,9 +85,6 @@ spec:
                           required:
                             - port
                           type: object
-                        javaHome:
-                          nullable: true
-                          type: string
                         metricsPort:
                           format: uint16
                           minimum: 0.0
@@ -167,9 +164,6 @@ spec:
                                 required:
                                   - port
                                 type: object
-                              javaHome:
-                                nullable: true
-                                type: string
                               metricsPort:
                                 format: uint16
                                 minimum: 0.0
@@ -275,9 +269,6 @@ spec:
                           required:
                             - port
                           type: object
-                        javaHome:
-                          nullable: true
-                          type: string
                         metricsPort:
                           format: uint16
                           minimum: 0.0
@@ -343,9 +334,6 @@ spec:
                                 required:
                                   - port
                                 type: object
-                              javaHome:
-                                nullable: true
-                                type: string
                               metricsPort:
                                 format: uint16
                                 minimum: 0.0

docs/modules/ROOT/pages/building.adoc

@@ -1,6 +1,6 @@
 = Building the Operator
 
 This operator is written in Rust.
-It is developed against the latest stable Rust release (1.54 at the time of writing).
+It is developed against the latest stable Rust release (1.56 at the time of writing).
 
     cargo build

docs/modules/ROOT/pages/index.adoc

@@ -2,4 +2,9 @@
 
 This is an operator for Kubernetes that can manage https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HdfsUserGuide.html[Apache HDFS] clusters.
 
-WARNING: This operator does _not_ work with containers/container images. It relies on the https://github.com/stackabletech/agent/[Stackable Agent] to run on "bare metal" via systemd.
+WARNING: This operator only works with images from the https://repo.stackable.tech/#browse/browse:docker:v2%2Fstackable%2Fhadoop[Stackable] repository
+
+[source]
+----
+docker pull docker.stackable.tech/stackable/hadoop:<version>
+----

docs/modules/ROOT/pages/usage.adoc

@@ -18,11 +18,10 @@ To create a single node Apache HDFS (v3.2.2) cluster with Prometheus metrics exp
           default:
             selector:
               matchLabels:
-                kubernetes.io/arch: stackable-linux
+                kubernetes.io/os: linux
             replicas: 1
             config:
-              javaHome: /usr/lib/jvm/java-11-openjdk-amd64/
-              dfsNamenodeNameDir: file:///tmp/hdfs/nn
+              dfsNamenodeNameDir: /stackable/data
               ipcAddress:
                 port: 9000
               httpAddress:
@@ -33,11 +32,10 @@ To create a single node Apache HDFS (v3.2.2) cluster with Prometheus metrics exp
           default:
             selector:
               matchLabels:
-                kubernetes.io/arch: stackable-linux
+                kubernetes.io/os: linux
             replicas: 1
             config:
-              javaHome: /usr/lib/jvm/java-11-openjdk-amd64/
-              dfsDatanodeNameDir: file:///tmp/hdfs/dn
+              dfsDatanodeNameDir: /stackable/data
               httpAddress:
                 port: 61000
               metricsPort: 51000

examples/simple-hdfs-cluster.yaml

@@ -9,11 +9,10 @@ spec:
       default:
         selector:
           matchLabels:
-            kubernetes.io/os: stackable-linux
+            kubernetes.io/os: linux
         replicas: 1
         config:
-          javaHome: /usr/lib/jvm/java-11-openjdk-amd64/
-          dfsNamenodeNameDir: file:///tmp/hdfs/nn
+          dfsNamenodeNameDir: /stackable/hadoop/namenode/data
           ipcAddress:
             port: 9000
           httpAddress:
@@ -24,11 +23,10 @@ spec:
       default:
         selector:
           matchLabels:
-            kubernetes.io/os: stackable-linux
+            kubernetes.io/os: linux
         replicas: 1
         config:
-          javaHome: /usr/lib/jvm/java-11-openjdk-amd64/
-          dfsDatanodeNameDir: file:///tmp/hdfs/dn
+          dfsDatanodeNameDir: /stackable/hadoop/datannode/data
           httpAddress:
             port: 61000
           metricsPort: 51000

rust/crd/Cargo.toml

@@ -8,7 +8,7 @@ repository = "https://github.com/stackabletech/hdfs-operator"
 version = "0.2.0-nightly"
 
 [dependencies]
-stackable-operator = { git = "https://github.com/stackabletech/operator-rs.git", tag = "0.3.0" }
+stackable-operator = { git = "https://github.com/stackabletech/operator-rs.git", tag = "0.4.0" }
 
 duplicate = "0.3.0"
 semver = "1.0"