add example of sentry node architecture

k8s/sentry-node/Dockerfile-test.tpl

@@ -0,0 +1,7 @@
+FROM bluele/hypermint:<VERSION>
+
+ENV WORKDIR=/go/src/github.com/bluele/hypermint
+WORKDIR ${WORKDIR}
+
+RUN apk add bash
+RUN /hmd testnet -v=<VALS_NUM> -n=<VALS_NUM> --address=<GENESIS_ADDR> -o=/mytestnet

k8s/sentry-node/Makefile

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+BUILD_DIR?=../../build
+CONFIG_DIR?=./config
+VERSION?=$(shell cat ../../version)
+RESOURCES?=$(wildcard $(CONFIG_DIR)/*.yaml)
+RESOURCES_OPT?=$(addprefix -f,$(RESOURCES))
+VALS_NUM?=4
+# mnemonic "token dash time stand brisk fatal health honey frozen brown flight kitchen"
+# m/44'/60'/0'/0
+GENESIS_ADDR?=0x1221a0726d56aEdeA9dBe2522DdAE3Dd8ED0f36c
+
+create:
+	kubectl apply $(RESOURCES_OPT)
+
+destory:
+	kubectl delete $(RESOURCES_OPT)
+
+gen-config:
+	@rm -f ./config/*.yaml
+	@bash ./gen_testnet.sh $(VALS_NUM)
+
+destory-pvc:
+	@for n in $$(kubectl get pvc -o go-template --template '{{range .items}}{{.metadata.labels.app}}{{"\n"}}{{end}}' | grep 'hm-validator'); do \
+		kubectl delete pvc -l app=$$n; \
+	done
+
+build-image:
+	sed -e "s/<VERSION>/${VERSION}/g" -e "s/<VALS_NUM>/$(VALS_NUM)/g" -e "s/<GENESIS_ADDR>/$(GENESIS_ADDR)/g" Dockerfile-test.tpl | docker build --no-cache=true -t bluele/hypermint-testnet-sentry:${VERSION} -
+
+balance0:
+	$(eval port := $(shell kubectl get services/hm-validator-0 -o go-template='{{- range .spec.ports }}{{- if (eq "rpc" .name) }}{{.nodePort}}{{- end}}{{- end}}'))
+	@$(BUILD_DIR)/hmcli balance --address=$(GENESIS_ADDR) --node=tcp://localhost:$(port)

k8s/sentry-node/README.md

@@ -0,0 +1,14 @@
+# Testnet
+
+## Getting started
+
+```
+# Generate k8s yaml files, and build docker image for testnet.
+$ make VALS_NUM=4 gen-config
+
+# Create a testnet with generated config.
+$ make create
+
+# Destory testnet
+$ make destroy
+```

k8s/sentry-node/config.yaml.tpl

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: hm-config
+data:
+  validators: "<VALIDATORS>"

k8s/sentry-node/config/.gitignore

@@ -0,0 +1 @@
+*.yaml

k8s/sentry-node/deployment.yaml.tpl

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+apiVersion: v1
+kind: Service
+metadata:
+  name: hm-validator-<NODENO>
+spec:
+  type: NodePort
+  selector:
+    app: hm-validator-<NODENO>
+  ports:
+  - port: 26656
+    name: p2p
+  - port: 26657
+    name: rpc
+
+---
+
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: hm-validator-<NODENO>
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: hm-validator-<NODENO>
+  serviceName: hm-validator-<NODENO>
+  template:
+    metadata:
+      labels:
+        app: hm-validator-<NODENO>
+    spec:
+      containers:
+        - name: hm-validator
+          image: bluele/hypermint-testnet-sentry:<VERSION>
+          command:
+            - bash
+            - "-c"
+            - |
+              set -ex
+              sentryid=$(/hmd tendermint show-node-id --home /mytestnet/node<SENTRYNO>/hmd)
+              peer="${sentryid}@127.0.0.1:26656"
+              state_file=/mytestnet/node<NODENO>/hmd/data/priv_validator_state.json
+              if [ ! -e $state_file ]; then
+              cat << EOF > $state_file
+              {
+                "height": "0",
+                "round": "0",
+                "step": 0
+              }
+              EOF
+              fi
+              TM_PARAMS="p2p.allow_duplicate_ip=true,p2p.addr_book_strict=false" /hmd start --home=/mytestnet/node<NODENO>/hmd \
+              --log_level="*:info" \
+              --p2p.persistent_peers=$peer \
+              --p2p.laddr="tcp://0.0.0.0:36656" \
+              --rpc.laddr="tcp://0.0.0.0:36657" \
+              --address="tcp://0.0.0.0:36658"
+          volumeMounts:
+            - mountPath: /mytestnet/node<NODENO>/hmd/data
+              name: hmdir-validator-<NODENO>
+
+        - name: hm-sentry
+          image: bluele/hypermint-testnet-sentry:<VERSION>
+          env:
+          - name: VALIDATORS
+            valueFrom:
+              configMapKeyRef:
+                name: hm-config
+                key: validators
+          command:
+            - bash
+            - "-c"
+            - |
+              set -ex
+              IFS=',' read -ra VALIDATORS_NUM <<< "$VALIDATORS"
+              peers=()
+
+              for n in "${VALIDATORS_NUM[@]}"; do
+                nodeid=$(/hmd tendermint show-node-id --home /mytestnet/node$(expr ${n} + 4)/hmd)
+                peers+=("${nodeid}@hm-validator-${n}:26656")
+              done
+
+              validatorid=$(/hmd tendermint show-node-id --home /mytestnet/node<NODENO>/hmd)
+              peers+=("${validatorid}@127.0.0.1:36656")
+              peers=$(IFS=','; echo "${peers[*]}")
+
+              state_file=/mytestnet/node<SENTRYNO>/hmd/data/priv_validator_state.json
+              if [ ! -e $state_file ]; then
+              cat << EOF > $state_file
+              {
+                "height": "0",
+                "round": "0",
+                "step": 0
+              }
+              EOF
+              fi
+              TM_PARAMS="p2p.allow_duplicate_ip=true,p2p.addr_book_strict=false,p2p.private_peer_ids=${validatorid}" /hmd start --home=/mytestnet/node<SENTRYNO>/hmd \
+              --log_level="*:info" \
+              --p2p.persistent_peers="$peers" \
+              --p2p.laddr="tcp://0.0.0.0:26656" \
+              --rpc.laddr="tcp://0.0.0.0:26657" \
+              --address="tcp://0.0.0.0:26658"
+          ports:
+            - containerPort: 26656
+              name: p2p
+            - containerPort: 26657
+              name: rpc
+          volumeMounts:
+            - mountPath: /mytestnet/node<SENTRYNO>/hmd/data
+              name: hmdir-sentry-<SENTRYNO>
+
+  volumeClaimTemplates:
+    - metadata:
+        name: hmdir-validator-<NODENO>
+      spec:
+        accessModes:
+          - ReadWriteOnce
+        resources:
+          requests:
+            storage: 1Gi
+    - metadata:
+        name: hmdir-sentry-<SENTRYNO>
+      spec:
+        accessModes:
+          - ReadWriteOnce
+        resources:
+          requests:
+            storage: 1Gi

k8s/sentry-node/gen_testnet.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -eu
+VERSION=$(cat ../../version)
+VALNUM=$1
+
+vals=()
+nvals=()
+for i in $(seq 0 $(expr $VALNUM - 1)); do
+    SENTRYNO=$(expr $i + $VALNUM)
+    sed -e "s/<VERSION>/${VERSION}/g" -e "s/<NODENO>/$i/g" -e "s/<SENTRYNO>/${SENTRYNO}/g" deployment.yaml.tpl > ./config/deployment${i}.yaml
+    echo "generate deployment$i.yaml"
+    vals+=(${i})
+    nvals+=($SENTRYNO)
+done
+vals=$(IFS=','; echo "${vals[*]}")
+nvals=$(IFS=','; echo "${nvals[*]}")
+sed -e "s/<VALIDATORS>/${vals}/g" -e "s/<SENTRYNODES>/${nvals}/g" config.yaml.tpl > ./config/config.yaml
+echo "generate config.yaml"