Feat: add support for distributed serving type

charts/distributed-serving/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj

charts/distributed-serving/CHANGLOG.md

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+### 0.1.0
+
+* init distributed-serving chart

charts/distributed-serving/Chart.yaml

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+apiVersion: v1
+appVersion: "1.0"
+description: A Helm chart for distributed-serving
+name: distributed-serving
+version: 0.1.0

charts/distributed-serving/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "distributed-serving.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "distributed-serving.fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "distributed-serving.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}

charts/distributed-serving/templates/configmap.yaml

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+{{- $releaseName := .Release.Name }}
+{{- $namespace := .Release.Namespace }}
+{{- $workerNum := .Values.workers -}}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ $releaseName }}-cm
+  labels:
+    app: {{ template "distributed-serving.name" $ }}
+    chart: {{ template "distributed-serving.chart" $ }}
+    release: {{ $releaseName }}
+    heritage: {{ .Release.Service }}
+    createdBy: "DistributedServing"
+data:
+  {{- range $replica := until (int .Values.replicas) }}
+  hostfile-{{ $replica }}: |-
+    {{ $releaseName }}.{{ $releaseName }}-{{ $replica }}.{{ $namespace }}
+    {{- range $i := until (int $workerNum) }}
+    {{ $releaseName }}.{{ $releaseName }}-{{ $replica }}-{{ $i }}.{{ $namespace }}
+    {{- end }}
+  {{- end }}
+  master.rayInit: |-
+    #!/bin/bash
+
+    ray_port=6379
+    ray_init_timeout=300
+    ray_cluster_size=$WORLD_SIZE
+    master_command=$1
+
+    ray start --head --port=$ray_port
+
+    for (( i=0; i < $ray_init_timeout; i+=5 )); do
+      active_nodes=`python3 -c 'import ray; ray.init(); print(sum(node["Alive"] for node in ray.nodes()))'`
+      if [ $active_nodes -eq $ray_cluster_size ]; then
+        echo "All ray workers are active and the ray cluster is initialized successfully."
+        $master_command
+        exit 0
+      fi
+      echo "Wait for all ray workers to be active. $active_nodes/$ray_cluster_size is active"
+      sleep 5s;
+    done
+    echo "Waiting for all ray workers to be active timed out."
+    exit 1
+  worker.rayInit: |-
+    #!/bin/bash
+
+    ray_port=6379
+    ray_init_timeout=300
+    ray_address=$MASTER_ADDR
+    worker_command=$1
+
+    for (( i=0; i < $ray_init_timeout; i+=5 )); do
+      ray start --address=$ray_address:$ray_port
+      if [ $? -eq 0 ]; then
+        echo "Worker: Ray runtime started with head address $ray_address:$ray_port"
+        $worker_command
+        exit 0
+      fi
+      echo "Waiting until the ray worker is active..."
+      sleep 5s;
+    done
+    echo "Ray worker starts timeout, head address: $ray_address:$ray_port"
+    exit 1