Add memory bandwidth exporter for AI workload.

.github/workflows/pr-go-unittests.yaml

@@ -91,6 +91,9 @@ jobs:
 
       - name: Run tests and generate coverage
         run: |
+          if [ "${{ matrix.gopath }}" == "${MBE_DIR}" ]; then
+            exit 0
+          fi
           cd ${{ matrix.gopath }}
           go test -coverprofile=coverage.out $(go list ./... | grep -v /e2e)
-          ../.github/workflows/scripts/go-coverage.sh
+          ${{ github.workspace }}/.github/workflows/scripts/go-coverage.sh

kubernetes-addons/memory-bandwidth-exporter/.golangci.yml

@@ -0,0 +1,62 @@
+# Copyright (C) 2024 Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+run:
+  timeout: 5m
+  allow-parallel-runners: true
+
+issues:
+  exclude-use-default: false
+  exclude-rules:
+    - path: _test.go
+      linters:
+        - errcheck
+
+linters:
+  disable-all: true
+  enable:
+    - depguard
+    - misspell
+    - revive
+    - dupl
+    - errcheck
+    - exportloopref
+    - goconst
+    - gocyclo
+    - gofmt
+    - goimports
+    - gosimple
+    - govet
+    - ineffassign
+    - lll
+    - misspell
+    - nakedret
+    - prealloc
+    - staticcheck
+    - typecheck
+    - unconvert
+    - unparam
+    - unused
+
+
+linters-settings:
+  depguard:
+    rules:
+      no_exec_policy:
+        files:
+          - "!$test"
+        deny:
+          - pkg: "os/exec"
+            desc: "Using os/exec to run sub processes it not allowed by policy"
+  errcheck:
+    exclude-functions:
+      # Used in HTTP handlers, any error is handled by the server itself.
+      - (net/http.ResponseWriter).Write
+      # Never check for logger errors.
+      - (github.com/go-kit/log.Logger).Log
+  revive:
+    rules:
+      # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#unused-parameter
+      - name: unused-parameter
+        severity: warning
+        disabled: true

kubernetes-addons/memory-bandwidth-exporter/Dockerfile

@@ -0,0 +1,17 @@
+FROM golang:1.22 AS builder
+ARG TARGETOS
+ARG TARGETARCH
+
+WORKDIR /workspace
+COPY . /workspace/
+RUN go mod download
+
+RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -a -o memory-bandwidth-exporter cmd/main.go
+
+FROM ubuntu:22.04
+USER root
+WORKDIR /
+COPY --from=builder /workspace/memory-bandwidth-exporter .
+
+ENTRYPOINT  ["bash", "-c"]
+CMD ["/memory-bandwidth-exporter --collector.node.name=${NODE_NAME} --collector.container.namespaceWhiteList=${NAMESPACE_WHITELIST}"]

kubernetes-addons/memory-bandwidth-exporter/Makefile

@@ -0,0 +1,75 @@
+GO_CMD     := go
+DEBUG ?= 0
+DOCKER_REGISTRY ?= docker.io/opea
+CONTAINER_TOOL ?= docker
+VERSION ?= latest
+
+ifeq ($(DEBUG),0)
+	GOFLAGS=-ldflags="all=-s -w"
+endif
+
+MBE_IMG_NAME = memory-bandwidth-exporter:$(VERSION)
+MBE_IMG = ${DOCKER_REGISTRY}/${MBE_IMG_NAME}
+
+build: 
+	@mkdir -p bin
+	@echo "Building memory-bandwidth-exporter binary..."
+	$(GO_CMD) build -o bin/memory-bandwidth-exporter  $(GOFLAGS) cmd/main.go
+
+docker.build:
+	@echo "Building memory-bandwidth-exporter Docker image..."
+	$(CONTAINER_TOOL) build -t ${MBE_IMG} -f Dockerfile .
+
+docker.push:
+	@echo "Push memory-bandwidth-exporter Docker image..."
+	$(CONTAINER_TOOL) push ${MBE_IMG}
+
+clean:
+	@echo "Cleaning up..."
+	rm -rf bin
+
+change_img:
+	sed -i "s\MBE_IMG\${MBE_IMG}\g" config/manifests/memory-bandwidth-exporter.yaml
+
+test:
+	@echo "Running tests..."
+	$(GO_CMD) test ./...
+
+lint: golangci-lint ## Run golangci-lint linter & yamllint
+	@echo "Running linters...${GOLANGCI_LINT}"
+	$(GOLANGCI_LINT) run ./...
+
+lint-fix: golangci-lint ## Run golangci-lint linter and perform fixes
+	$(GOLANGCI_LINT) run --fix ./...
+
+##@ Dependencies
+
+## Location to install dependencies to
+LOCALBIN ?= $(shell pwd)/bin
+$(LOCALBIN):
+	mkdir -p $(LOCALBIN)
+
+## Tool Binaries
+GOLANGCI_LINT = $(LOCALBIN)/golangci-lint-$(GOLANGCI_LINT_VERSION)
+
+## Tool Versions
+GOLANGCI_LINT_VERSION ?= v1.59.1
+
+.PHONY: golangci-lint
+golangci-lint: $(GOLANGCI_LINT) ## Download golangci-lint locally if necessary.
+$(GOLANGCI_LINT): $(LOCALBIN)
+	$(call go-install-tool,$(GOLANGCI_LINT),github.com/golangci/golangci-lint/cmd/golangci-lint,${GOLANGCI_LINT_VERSION})
+
+# go-install-tool will 'go install' any package with custom target and name of binary, if it doesn't exist
+# $1 - target path with name of binary (ideally with version)
+# $2 - package url which can be installed
+# $3 - specific version of package
+define go-install-tool
+@[ -f $(1) ] || { \
+set -e; \
+package=$(2)@$(3) ;\
+echo "Downloading $${package}" ;\
+GOBIN=$(LOCALBIN) go install $${package} ;\
+mv "$$(echo "$(1)" | sed "s/-$(3)$$//")" $(1) ;\
+}
+endef

kubernetes-addons/memory-bandwidth-exporter/README.md

@@ -0,0 +1,151 @@
+# memory bandwidth exporter
+
+Pod/container grained memory bandwidth exporter provides users memory bandwidth metrics of their running containers. The metrics include llc_occupancy, mbm_local_bytes, mbm_total_bytes, cpu utilization and memory usage, and the metrics have been processed. In addition to container-level metrics, it also provides class-level and socket-level metrics. Users can configure the list of metrics to be collected. It serves as an exporter which can be connected to Promethus-like obserbility tools. And it also can be used as a telementry provider.
+
+Memory bandwidth exporter makes use of state-of-the-art technologies like NRI to build a resource-efficient and well-maintained solution. This solution provides observability to memory bandwidth to OPEA micro-services. It lays the groundwork of better scaling and auto scaling of OPEA. It can also be deployed separately on end user environments, supporting any cases that memory bandwidth metrics are required.
+
+The memory bandwidth exporter currently only supports Intel platforms with RDT, and will fail on other platforms. We will add node feature discovery in the future.
+
+## Setup
+
+### Enable NRI in Containerd
+
+```sh
+# download containerd binary, containerd version v1.7.0 or higher is required
+$ wget https://github.com/containerd/containerd/releases/download/v1.7.0/containerd-1.7.0-linux-amd64.tar.gz
+
+# stop running containerd
+$ sudo systemctl stop containerd
+
+# replace old containerd
+$ sudo tar Cxzvf /usr/local containerd-1.7.0-linux-amd64.tar.gz
+
+# enable NRI in containerd
+# add an item in /etc/containerd/config.toml
+[plugins."io.containerd.nri.v1.nri"]
+    disable = false
+    disable_connections = false
+    plugin_config_path = "/etc/containerd/certs.d"
+    plugin_path = "/opt/nri/plugins"
+    socket_path = "/var/run/nri/nri.sock"
+    config_file = "/etc/nri/nri.conf"
+
+# restart containerd
+$ sudo systemctl start containerd
+$ sudo systemctl status containerd
+
+# test nri
+$ git clone https://github.com/containerd/nri
+$ cd nri
+$ make
+$ ./build/bin/logger -idx 00
+```
+
+### Enable RDT
+
+Mount resctrl to the directory `/sys/fs/resctrl`:
+
+```sh
+$ sudo mount -t resctrl resctrl /sys/fs/resctrl
+```
+
+### Setup memory bandwidth exporter
+
+Before setup, you need to configure the runc hook:
+
+```sh
+$ ./config/config.sh
+```
+
+#### How to build the binary and setup?
+
+```sh
+$ make build
+$ sudo ./bin/memory-bandwidth-exporter
+# e.g., sudo ./bin/memory-bandwidth-exporter --collector.node.name=<node_name> --collector.container.namespaceWhiteList="calico-apiserver,calico-system,kube-system,tigera-operator"
+
+# get memory bandwidth metrics
+$ curl http://localhost:9100/metrics
+```
+
+#### How to build the docker image and setup?
+
+```sh
+$ make docker.build
+$ sudo docker run \
+  -e NODE_NAME=<node_name> \
+  -e NAMESPACE_WHITELIST="calico-apiserver,calico-system,kube-system,tigera-operator" \
+  --mount type=bind,source=/etc/containers/oci/hooks.d/,target=/etc/containers/oci/hooks.d/ \
+  --privileged \
+  --cgroupns=host \
+  --pid=host \
+  --mount type=bind,source=/usr/,target=/usr/ \
+  --mount type=bind,source=/sys/fs/resctrl/,target=/sys/fs/resctrl/ \
+  --mount type=bind,source=/var/run/nri/,target=/var/run/nri/ \
+  -d -p 9100:9100 \
+  --name=memory-bandwidth-exporter \
+  opea/memory-bandwidth-exporter:latest
+
+# get memory bandwidth metrics
+$ curl http://localhost:9100/metrics
+```
+
+#### How to deploy on the K8s cluster?
+
+Build and push your image to the location specified by `MBE_IMG`, and apply manifest:
+
+```sh
+$ make docker.build docker.push MBE_IMG=<some-registry>/opea/memory-bandwidth-exporter:<tag>
+$ make change_img MBE_IMG=<some-registry>/opea/memory-bandwidth-exporter:<tag>
+# If namespace system does not exist, create it.
+$ kubectl create ns system
+$ kubectl apply -f config/manifests/memory-bandwidth-exporter.yaml
+```
+
+Check the installation result:
+
+```sh
+kubectl get pods -n system
+NAME                              READY   STATUS    RESTARTS   AGE
+memory-bandwidth-exporter-zxhdl   1/1     Running   0          3m
+```
+
+get memory bandwidth metrics
+
+```sh
+$ curl http://<memory_bandwidth_exporter_container_ip>:9100/metrics
+```
+
+#### How to delete binary?
+
+```sh
+$ make clean
+```
+
+## More flags about memory bandwidth exporter
+
+There are some flags to help users better use memory bandwidth exporter:
+
+```sh
+-h, --[no-]help                               Show context-sensitive help (also try --help-long and --help-man).
+--collector.node.name=""                      Give node name.
+--collector.container.namespaceWhiteList=""   Filter out containers whose namespaces belong to the namespace whitelist, namespaces separated by commas, like "xx,xx,xx".
+--collector.container.monTimes=10             Scan the pids of containers created before the exporter starts to prevent the loss of pids.
+--collector.container.metrics="all"           Enable container collector metrics.
+--collector.class.metrics="none"              Enable class collector metrics.
+--collector.node.metrics="none"               Enable node collector metrics.
+--web.telemetry-path="/metrics"               Path under which to expose metrics.
+--[no-]web.disable-exporter-metrics           Exclude metrics about the exporter itself (promhttp_*, process_*, go_*).
+--web.max-requests=40                         Maximum number of parallel scrape requests. Use 0 to disable.
+--runtime.gomaxprocs=1                        The target number of CPUs Go will run on (GOMAXPROCS) ($GOMAXPROCS)
+--[no-]web.systemd-socket                     Use systemd socket activation listeners instead of port listeners (Linux only).
+--web.listen-address=:9100 ...                Addresses on which to expose metrics and web interface. Repeatable for multiple addresses.
+--web.config.file=""                          Path to configuration file that can enable TLS or authentication. See: https://github.com/prometheus/exporter-toolkit/blob/master/docs/web-configuration.md
+--collector.interval=3s                       memory bandwidth exporter collect metrics interval
+--NRIplugin.name="mb-nri-plugin"              Plugin name to register to NRI
+--NRIplugin.idx="11"                          Plugin index to register to NRI
+--[no-]disableWatch                           Disable watching hook directories for new hooks
+--log.level=info                              Only log messages with the given severity or above. One of: [debug, info, warn, error]
+--log.format=logfmt                           Output format of log messages. One of: [logfmt, json]
+--[no-]version                                Show application version.
+```