Update helm install for Kubernetes and add new k8s Docker image

docker/k8s/Dockerfile

@@ -0,0 +1,59 @@
+FROM vitess/base as base
+
+FROM debian:stretch-slim
+
+# Set up Vitess environment (just enough to run pre-built Go binaries)
+ENV VTROOT /vt
+ENV VTDATAROOT /vtdataroot
+ENV VTTOP /vt/src/github.com/youtube/vitess
+
+# Create vitess user
+RUN mkdir -p /vt && \
+\
+    mkdir -p /vt/bin && \
+    mkdir -p /vt/config && \
+    mkdir -p /vt/web && \
+    mkdir -p /vtdataroot/tabletdata
+
+# Copy CA certs for https calls
+COPY --from=base /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+
+# Copy binaries
+COPY --from=base /vt/bin/mysqlctld /vt/bin/
+COPY --from=base /vt/bin/vtctld /vt/bin/
+COPY --from=base /vt/bin/vtctl /vt/bin/
+COPY --from=base /vt/bin/vtgate /vt/bin/
+COPY --from=base /vt/bin/vttablet /vt/bin/
+COPY --from=base /vt/bin/vtworker /vt/bin/
+
+# copy web admin files
+COPY --from=base $VTTOP/web /vt/web/
+
+# copy vitess config
+COPY --from=base $VTTOP/config/init_db.sql /vt/config/
+
+# mysql flavor files for db specific .cnf settings
+COPY --from=base $VTTOP/config/mycnf/master_mysql56.cnf /vt/config/mycnf/
+COPY --from=base $VTTOP/config/mycnf/master_mariadb.cnf /vt/config/mycnf/
+
+# settings for different types of instances
+COPY --from=base $VTTOP/config/mycnf/default.cnf /vt/config/mycnf/
+COPY --from=base $VTTOP/config/mycnf/master.cnf /vt/config/mycnf/
+COPY --from=base $VTTOP/config/mycnf/replica.cnf /vt/config/mycnf/
+COPY --from=base $VTTOP/config/mycnf/rdonly.cnf /vt/config/mycnf/
+COPY --from=base $VTTOP/config/mycnf/backup.cnf /vt/config/mycnf/
+
+# settings to support rbr
+COPY --from=base $VTTOP/config/mycnf/rbr.cnf /vt/config/mycnf/
+
+# add vitess user and add permissions
+RUN groupadd -r vitess && useradd -r -g vitess vitess && \
+   chown -R vitess:vitess /vt;
+
+# TODO: remove when https://github.com/youtube/vitess/issues/3553 is fixed
+RUN apt-get update && \
+    apt-get upgrade -qq && \
+    apt-get install mysql-client -qq && \
+    apt-get clean && \
+    apt-get autoclean && \
+    apt-get autoremove

helm/README.md

@@ -1,4 +1,4 @@
-# Helm Charts
+# Helm Chart
 
 This directory contains [Helm](https://github.com/kubernetes/helm)
 charts for running [Vitess](http://vitess.io) on
@@ -10,3 +10,170 @@ sources for canonical packages that we plan to publish to the official
 However, you may also find them useful as a starting point for creating
 customized charts for your site, or other general-purpose charts for
 common cluster variations.
+
+## Example `site-values.yaml` configurations
+
+You will need to provide a `site-values.yaml` file in order for Vitess to properly
+install. Here are examples of various configurations. To see additional options,
+look at the default `values.yaml` file, which is well commented.
+
+### Minimum config
+
+```
+topology:
+  cells:
+    - name: "datacenter-1"
+      keyspaces:
+        - name: "unsharded-dbname"
+          shards:
+            - name: "0"
+              tablets:
+                - type: "replica"
+                  vttablet:
+                    replicas: 2
+```
+
+### Unsharded + sharded keyspaces
+
+```
+topology:
+  cells:
+    - name: "datacenter-1"
+      keyspaces:
+        - name: "unsharded-dbname"
+          shards:
+            - name: "0"
+              tablets:
+                - type: "replica"
+                  vttablet:
+                    replicas: 2
+        - name: "sharded-db"
+          shards:
+            - name: "-80"
+              tablets:
+                - type: "replica"
+                  vttablet:
+                    replicas: 2
+            - name: "80-"
+              tablets:
+                - type: "replica"
+                  vttablet:
+                    replicas: 2
+```
+
+### Separate pools of replicas and rdonly tablets 
+
+```
+topology:
+  cells:
+    - name: "datacenter-1"
+      keyspaces:
+        - name: "unsharded-dbname"
+          shards:
+            - name: "0"
+              tablets:
+                - type: "replica"
+                  vttablet:
+                    replicas: 2
+                - type: "rdonly"
+                  vttablet:
+                    replicas: 2
+```
+
+### Use a custom database image and a specific Vitess release
+
+```
+topology:
+  cells:
+    ...
+
+vttablet:
+  vitessTag: "2.1"
+  mysqlImage: "percona:5.7.20"
+  flavor: percona
+```
+
+### Enable MySQL protocol support
+
+```
+topology:
+  cells:
+    - name: "datacenter-1"
+      # enable or disable mysql protocol support, with accompanying auth details
+      mysqlProtocol:
+        enabled: false
+        username: myuser
+        # this is the secret that will be mounted as the user password
+        # kubectl create secret generic myuser_password --from-literal=password=abc123
+        passwordSecret: myuser-password
+
+      keyspaces:
+         ...
+```
+
+### Enable backup/restore using Google Cloud Storage
+
+```
+topology:
+  cells:
+    ...
+
+config:
+  backup:
+    enabled: true
+    backup_storage_implementation: gcs
+
+    # Google Cloud Storage bucket to use for backups
+    gcs_backup_storage_bucket: vitess-backups
+
+    # root prefix for all backup-related object names
+    gcs_backup_storage_root: vtbackups
+```
+
+### Custom requests/limits
+
+```
+topology:
+  cells:
+    ...
+
+vttablet:
+  resources:
+    # common production values 2-4CPU/4-8Gi RAM
+    limits:
+      cpu: 2
+      memory: 4Gi
+  mysqlResources:
+    # common production values 4CPU/8-16Gi RAM
+    limits:
+      cpu: 4
+      memory: 8Gi
+  # PVC for mysql
+  dataVolumeClaimAnnotations:
+  dataVolumeClaimSpec:
+    # pd-ssd (Google Cloud)
+    # managed-premium (Azure)
+    # standard (AWS) - not sure what the default class is for ssd
+    storageClassName: "default"
+    accessModes: ["ReadWriteOnce"]
+    resources:
+      requests:
+        storage: "10Gi"
+```
+
+### Custom PVC for MySQL data
+
+```
+topology:
+  cells:
+    ...
+
+vttablet:
+  dataVolumeClaimSpec:
+    # Google Cloud SSD
+    storageClassName: "pd-ssd"
+    accessModes: ["ReadWriteOnce"]
+    resources:
+      requests:
+        storage: "100Gi"
+```

helm/vitess/Chart.yaml

@@ -1,10 +1,13 @@
 apiVersion: v1
 name: vitess
-version: 0.2.0
+version: 0.9.0
 description: Single-Chart Vitess Cluster
 keywords:
   - vitess
   - mysql
+  - maria
+  - mariadb
+  - percona
   - sql
   - database
   - shard