diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 76d0925..747bd04 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,23 +17,24 @@ jobs:
         os: [ubuntu-latest]
 
     steps:
-
-    - name: Set up Go ${{ matrix.go_version }}
-      uses: actions/setup-go@v6
-      with:
-        go-version: ${{ matrix.go_version }}
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v6
-
-    - name: Get dependencies
-      run: |
-        go get -v -t -d ./...
-
-    - name: Build
-      run: go build -v ./...
-
-    - name: Test
-      run: "go test -v -race -short ./..."
-      shell: bash
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v7
+
+      - name: Set up Go ${{ matrix.go_version }}
+        uses: actions/setup-go@v6
+        with:
+          go-version: ${{ matrix.go_version }}
+          check-latest: true
+          cache: true
+
+      - name: Get dependencies
+        run: |
+          go get -v -t -d ./...
+
+      - name: Build
+        run: go build -v ./...
+
+      - name: Test
+        run: "go test -v -race -short ./..."
+        shell: bash
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 939cd71..cde5ec6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -10,22 +10,22 @@ jobs:
   goreleaser:
     runs-on: ubuntu-latest
     steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v6
-      -
-        name: Unshallow
+      - name: Checkout
+        uses: actions/checkout@v7
+
+      - name: Unshallow
         run: git fetch --prune --unshallow
-      -
-        name: Set up Go
+
+      - name: Set up Go
         uses: actions/setup-go@v6
         with:
           go-version: 1.26.x
-      -
-        name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v4
+          check-latest: true
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v7
         with:
-          version: latest
+          version: '~> v2'
           args: release --clean
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/cfg/config.go b/cfg/config.go
index de3fb8d..d1e3f8f 100644
--- a/cfg/config.go
+++ b/cfg/config.go
@@ -11,7 +11,8 @@ import (
 // Config from the file
 type Config struct {
 	Simulation      bool                       `yaml:"simulation"`
-	Seed            int64                      `yaml:"simulation_seed"`
+	Seed1           uint64                     `yaml:"simulation_seed1"`
+	Seed2           uint64                     `yaml:"simulation_seed2"`
 	DiskPowerStatus map[string]DiskPowerStatus `yaml:"disk_power_status"`
 	Sensors         map[string]Task            `yaml:"sensors"`
 	DiskPools       map[string][]string        `yaml:"disk_pools"`
@@ -20,6 +21,7 @@ type Config struct {
 	Tasks           map[string]Task            `yaml:"tasks"`
 	Schedule        map[string]Schedule        `yaml:"schedule"`
 	FanControl      FanControl                 `yaml:"fan_control"`
+	Telemetry       Telemetry                  `yaml:"telemetry"`
 }
 
 type DiskPowerStatus struct {
@@ -112,6 +114,15 @@ type SetFromTo struct {
 	To   int `yaml:"to"`
 }
 
+type Telemetry struct {
+	Prometheus Prometheus `yaml:"prometheus"`
+}
+
+type Prometheus struct {
+	Enabled bool   `yaml:"enabled"`
+	Listen  string `yaml:"listen_address"`
+}
+
 // LoadFileConfig loads the configuration from the file
 func LoadFileConfig(fileName string) (Config, error) {
 	if !filepath.IsAbs(fileName) {
diff --git a/config.yaml b/config.yaml
index 9b28f99..db750ea 100644
--- a/config.yaml
+++ b/config.yaml
@@ -180,3 +180,8 @@ schedule:
     when:
     - startup
     - every 5m
+
+telemetry:
+  prometheus:
+    enabled: true
+    listen_address: ":8080"
diff --git a/flags.go b/flags.go
index b40a592..e5ffaa1 100644
--- a/flags.go
+++ b/flags.go
@@ -11,7 +11,8 @@ type Flags struct {
 	verbose    bool
 	debug      bool
 	simulation bool
-	seed       int64
+	seed1      uint64
+	seed2      uint64
 }
 
 var (
@@ -24,5 +25,6 @@ func init() {
 	flag.BoolVar(&flags.verbose, "v", false, "verbose - display debugging information")
 	flag.BoolVar(&flags.debug, "d", false, "debug - display full debugging information")
 	flag.BoolVar(&flags.simulation, "s", false, "simulation mode - test your rules with simulated sensors")
-	flag.Int64Var(&flags.seed, "r", 42, "random number seed to use in simulation mode")
+	flag.Uint64Var(&flags.seed1, "r1", 42, "random number seed to use in simulation mode")
+	flag.Uint64Var(&flags.seed2, "r2", 42, "random number seed to use in simulation mode")
 }
diff --git a/go.mod b/go.mod
index 65195a8..0058a6d 100644
--- a/go.mod
+++ b/go.mod
@@ -1,21 +1,39 @@
 module github.com/creativeprojects/hardware-events
 
-go 1.26.1
+go 1.26.5
 
 require (
 	github.com/coreos/go-systemd/v22 v22.7.0
 	github.com/creativeprojects/clog v0.14.0
+	github.com/prometheus/client_golang v1.23.2
 	github.com/stretchr/testify v1.11.1
+	go.opentelemetry.io/otel/exporters/prometheus v0.66.0
+	go.opentelemetry.io/otel/metric v1.44.0
+	go.opentelemetry.io/otel/sdk/metric v1.44.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/fatih/color v1.18.0 // indirect
-	github.com/kr/pretty v0.3.1 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/rogpeppe/go-internal v1.14.1 // indirect
-	golang.org/x/sys v0.42.0 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.67.5 // indirect
+	github.com/prometheus/otlptranslator v1.0.0 // indirect
+	github.com/prometheus/procfs v0.20.1 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/otel v1.44.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.44.0 // indirect
+	go.opentelemetry.io/otel/trace v1.44.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.4 // indirect
+	golang.org/x/sys v0.47.0 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
 )
diff --git a/go.sum b/go.sum
index 9a93281..4144e58 100644
--- a/go.sum
+++ b/go.sum
@@ -1,31 +1,79 @@
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/coreos/go-systemd/v22 v22.7.0 h1:LAEzFkke61DFROc7zNLX/WA2i5J8gYqe0rSj9KI28KA=
 github.com/coreos/go-systemd/v22 v22.7.0/go.mod h1:xNUYtjHu2EDXbsxz1i41wouACIwT7Ybq9o0BQhMwD0w=
-github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/creativeprojects/clog v0.14.0 h1:kthfMG6efS9kI4ACgYRIOPZ2efQkXvW7VhqZigCtpzU=
 github.com/creativeprojects/clog v0.14.0/go.mod h1:iHLlN4sZU+o5rRiFab6ZGHs2vApq09DyykMVJ2Sflro=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=
 github.com/fatih/color v1.18.0/go.mod h1:4FelSpRwEGDpQ12mAdzqdOukCy4u8WUtOY6lkT/6HfU=
+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
+github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
+github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
+github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
+github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE=
 github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+github.com/prometheus/client_golang v1.23.2 h1:Je96obch5RDVy3FDMndoUsjAhG5Edi49h0RJWRi/o0o=
+github.com/prometheus/client_golang v1.23.2/go.mod h1:Tb1a6LWHB3/SPIzCoaDXI4I8UHKeFTEQ1YCr+0Gyqmg=
+github.com/prometheus/client_model v0.6.2 h1:oBsgwpGs7iVziMvrGhE53c/GrLUsZdHnqNwqPLxwZyk=
+github.com/prometheus/client_model v0.6.2/go.mod h1:y3m2F6Gdpfy6Ut/GBsUqTWZqCUvMVzSfMLjcu6wAwpE=
+github.com/prometheus/common v0.67.5 h1:pIgK94WWlQt1WLwAC5j2ynLaBRDiinoAb86HZHTUGI4=
+github.com/prometheus/common v0.67.5/go.mod h1:SjE/0MzDEEAyrdr5Gqc6G+sXI67maCxzaT3A2+HqjUw=
+github.com/prometheus/otlptranslator v1.0.0 h1:s0LJW/iN9dkIH+EnhiD3BlkkP5QVIUVEoIwkU+A6qos=
+github.com/prometheus/otlptranslator v1.0.0/go.mod h1:vRYWnXvI6aWGpsdY/mOT/cbeVRBlPWtBNDb7kGR3uKM=
+github.com/prometheus/procfs v0.20.1 h1:XwbrGOIplXW/AU3YhIhLODXMJYyC1isLFfYCsTEycfc=
+github.com/prometheus/procfs v0.20.1/go.mod h1:o9EMBZGRyvDrSPH1RqdxhojkuXstoe4UlK79eF5TGGo=
 github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
 github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=
+go.opentelemetry.io/auto/sdk v1.2.1/go.mod h1:KRTj+aOaElaLi+wW1kO/DZRXwkF4C5xPbEe3ZiIhN7Y=
+go.opentelemetry.io/otel v1.44.0 h1:JjwHmHpA4iZ3wBxluu2fbbE7j4kqlE8jXyAyPXH7HqU=
+go.opentelemetry.io/otel v1.44.0/go.mod h1:BMgjTHL9WPRlRjL2oZCBTL4whCGtXch2H4BhOPIAyYc=
+go.opentelemetry.io/otel/exporters/prometheus v0.66.0 h1:vkrK8PAznv2NKt2r+kdu252ccGzkEqLc2aSXbQIALYQ=
+go.opentelemetry.io/otel/exporters/prometheus v0.66.0/go.mod h1:V/UB6D3vMF/UBOL5igAsAYnk1nG/bzYYTzvsB16cy7o=
+go.opentelemetry.io/otel/metric v1.44.0 h1:1w0gILTcHdr3YI+ixLyjemwrVnsMURbTZFrSYCdDdmc=
+go.opentelemetry.io/otel/metric v1.44.0/go.mod h1:8O7hanEPBNgEMmybD3s2VBKcgWOCsA6tzHBPODAiquo=
+go.opentelemetry.io/otel/metric/x v0.66.0 h1:YkCrx1zLOChi9ZcZ6euupOcsgzbVlec7D/xoEU1+cTA=
+go.opentelemetry.io/otel/metric/x v0.66.0/go.mod h1:d1+BDj9t96do0/1LoU1ayfCv79ZgNE41qbhBvnMOBZk=
+go.opentelemetry.io/otel/sdk v1.44.0 h1:nHYwb9lK+fJPU/dnT6s7W7Z8itMWyqrnVfbheVYrZ58=
+go.opentelemetry.io/otel/sdk v1.44.0/go.mod h1:Osuydd3Se74nqjAKxid74N5eC+jfEqfTegHRnq58oK0=
+go.opentelemetry.io/otel/sdk/metric v1.44.0 h1:3LlKgI+VjbVsjNRFZJZAJ30WjXC5VkNRks6si09iEfI=
+go.opentelemetry.io/otel/sdk/metric v1.44.0/go.mod h1:5B5pMARnXxKhltooO4xUuCBorl65a4EpnTalObqOigA=
+go.opentelemetry.io/otel/trace v1.44.0 h1:jxF5CsGYCe74MCRx2X4g7WsY/VBKRqqpNvXlX/6gtIk=
+go.opentelemetry.io/otel/trace v1.44.0/go.mod h1:oLl1jrMQAVo6v3GAggN+1VH9VIz9iUSvW53sW1Q8PIE=
+go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
+go.yaml.in/yaml/v2 v2.4.4 h1:tuyd0P+2Ont/d6e2rl3be67goVK4R6deVxCUX5vyPaQ=
+go.yaml.in/yaml/v2 v2.4.4/go.mod h1:gMZqIpDtDqOfM0uNfy0SkpRhvUryYH0Z6wdMYcacYXQ=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
-golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
+golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
+google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
diff --git a/lib/control.go b/lib/control.go
index ba15d95..0f5cf2e 100644
--- a/lib/control.go
+++ b/lib/control.go
@@ -112,7 +112,7 @@ func (c *Control) Exit() error {
 // Start the controller. The method will return after it has kicked off the necessary goroutines.
 func (c *Control) Start() {
 	for name, zone := range c.Zones {
-		clog.Debugf("starting %s", name)
+		clog.Debugf("starting zone: %s", name)
 		zone.Start()
 	}
 }
diff --git a/lib/global.go b/lib/global.go
index 78813dc..4beffde 100644
--- a/lib/global.go
+++ b/lib/global.go
@@ -1,7 +1,7 @@
 package lib
 
 import (
-	"math/rand"
+	"math/rand/v2"
 	"os"
 	"path/filepath"
 	"sync"
@@ -90,7 +90,7 @@ func NewGlobal(config cfg.Config) (*Global, error) {
 		return global, err
 	}
 
-	simulationRand := rand.New(rand.NewSource(config.Seed))
+	simulationRand := rand.New(rand.NewPCG(config.Seed1, config.Seed2))
 
 	// Temperature sensors
 	for sensorName, sensorCfg := range config.Sensors {
diff --git a/lib/simulation/sensor.go b/lib/simulation/sensor.go
index b3d3c3c..7563488 100644
--- a/lib/simulation/sensor.go
+++ b/lib/simulation/sensor.go
@@ -2,7 +2,7 @@ package simulation
 
 import (
 	"math"
-	"math/rand"
+	"math/rand/v2"
 	"strconv"
 	"sync"
 
diff --git a/lib/simulation/sensor_test.go b/lib/simulation/sensor_test.go
index 60b68e1..b58d000 100644
--- a/lib/simulation/sensor_test.go
+++ b/lib/simulation/sensor_test.go
@@ -1,7 +1,7 @@
 package simulation
 
 import (
-	"math/rand"
+	"math/rand/v2"
 	"testing"
 
 	"github.com/creativeprojects/hardware-events/cfg"
@@ -11,7 +11,7 @@ import (
 )
 
 func TestDefaultValues(t *testing.T) {
-	sensor, err := NewSensor("name", cfg.Task{}, rand.New(rand.NewSource(1)))
+	sensor, err := NewSensor("name", cfg.Task{}, rand.New(rand.NewPCG(0, 1)))
 	require.NoError(t, err)
 
 	testData := []func(string) string{
diff --git a/lib/telemetry.go b/lib/telemetry.go
new file mode 100644
index 0000000..6162c63
--- /dev/null
+++ b/lib/telemetry.go
@@ -0,0 +1,112 @@
+package lib
+
+import (
+	"context"
+
+	"go.opentelemetry.io/otel/attribute"
+	api "go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/sdk/metric"
+)
+
+const meterName = "hardware-events"
+
+type Telemetry struct {
+	provider *metric.MeterProvider
+}
+
+func NewTelemetry(global *Global, exporter metric.Reader) (*Telemetry, error) {
+	provider := metric.NewMeterProvider(metric.WithReader(exporter))
+
+	meter := provider.Meter(meterName)
+
+	err := setupDisks(meter, global.Disks)
+	if err != nil {
+		return nil, err
+	}
+
+	if global.FanControl != nil {
+		err := setupFanZones(meter, global.FanControl.Zones)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &Telemetry{
+		provider: provider,
+	}, nil
+}
+
+func (t *Telemetry) Shutdown(ctx context.Context) error {
+	return t.provider.Shutdown(ctx)
+}
+
+func setupDisks(meter api.Meter, disks map[string]*Disk) error {
+	_, err := meter.Int64ObservableGauge("disk_temperature",
+		api.WithDescription("Disk internal temperature sensor"),
+		api.WithUnit("degree Celsius"),
+		api.WithInt64Callback(func(ctx context.Context, fo api.Int64Observer) error {
+			for _, disk := range disks {
+				if disk == nil {
+					return nil
+				}
+				if disk.TemperatureAvailable() {
+					fo.Observe(int64(disk.Temperature()), api.WithAttributeSet(attribute.NewSet(diskAttributes(disk)...)))
+				}
+			}
+			return nil
+		}),
+	)
+	if err != nil {
+		return err
+	}
+
+	_, err = meter.Int64ObservableGauge("disk_active",
+		api.WithDescription("Active device: 0 when inactive, 1 when active"),
+		api.WithInt64Callback(func(ctx context.Context, fo api.Int64Observer) error {
+			for _, disk := range disks {
+				if disk == nil {
+					return nil
+				}
+				var value int64 = 0
+				if disk.IsActive() {
+					value = 1
+				}
+				fo.Observe(value, api.WithAttributeSet(attribute.NewSet(diskAttributes(disk)...)))
+			}
+			return nil
+		}),
+	)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func setupFanZones(meter api.Meter, zones map[string]*Zone) error {
+	_, err := meter.Int64ObservableGauge("fan_speed",
+		api.WithDescription("Fan speed from 0 to 100%"),
+		api.WithUnit("percent"),
+		api.WithInt64Callback(func(ctx context.Context, fo api.Int64Observer) error {
+			for _, zone := range zones {
+				attributes := []attribute.KeyValue{
+					{Key: "name", Value: attribute.StringValue(zone.Name)},
+					{Key: "id", Value: attribute.IntValue(zone.ID)},
+				}
+				fo.Observe(int64(zone.CurrentFanSpeed()), api.WithAttributeSet(attribute.NewSet(attributes...)))
+			}
+			return nil
+		}),
+	)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func diskAttributes(disk *Disk) []attribute.KeyValue {
+	attributes := []attribute.KeyValue{
+		{Key: "name", Value: attribute.StringValue(disk.Name)},
+		{Key: "device", Value: attribute.StringValue(disk.Device)},
+	}
+	return attributes
+}
diff --git a/lib/zone.go b/lib/zone.go
index 0b4ce6b..295de75 100644
--- a/lib/zone.go
+++ b/lib/zone.go
@@ -63,7 +63,7 @@ func NewZone(sensorReader SensorReader, config cfg.FanZone, name string, setSpee
 
 	sensors := make(map[string]*TemperatureSensor, len(config.Sensors))
 	for sensorName, sensorCfg := range config.Sensors {
-		sensor, err := NewTemperatureSensor(sensorCfg, sensorName, timer, sensorReader(sensorName), zone.RequestSpeed)
+		sensor, err := NewTemperatureSensor(sensorCfg, sensorName, timer, sensorReader(sensorName), zone.RequestFanSpeed)
 		if err != nil {
 			return nil, err
 		}
@@ -80,7 +80,7 @@ func (z *Zone) Start() {
 	}
 }
 
-func (z *Zone) SetSpeed(speed int) {
+func (z *Zone) setFanSpeed(speed int) {
 	if speed < z.minSpeed {
 		speed = z.minSpeed
 	}
@@ -97,7 +97,7 @@ func (z *Zone) SetSpeed(speed int) {
 	}
 }
 
-func (z *Zone) RequestSpeed(name string, speed int, min, max bool) {
+func (z *Zone) RequestFanSpeed(name string, speed int, min, max bool) {
 	if min {
 		speed = z.minSpeed
 	} else if max {
@@ -115,5 +115,12 @@ func (z *Zone) RequestSpeed(name string, speed int, min, max bool) {
 			speed = bid
 		}
 	}
-	z.SetSpeed(speed)
+	z.setFanSpeed(speed)
+}
+
+func (z *Zone) CurrentFanSpeed() int {
+	z.mutex.Lock()
+	defer z.mutex.Unlock()
+
+	return z.currentSpeed
 }
diff --git a/main.go b/main.go
index 34bf6e3..40bd672 100644
--- a/main.go
+++ b/main.go
@@ -1,12 +1,14 @@
 package main
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"os"
 	"os/signal"
 	"runtime"
 	"syscall"
+	"time"
 
 	"github.com/creativeprojects/clog"
 	"github.com/creativeprojects/hardware-events/cfg"
@@ -55,8 +57,9 @@ func main() {
 		config.Simulation = true
 	}
 	if config.Simulation {
-		clog.Warningf("running in simulation mode with seed = %d", flags.seed)
-		config.Seed = flags.seed
+		clog.Warningf("running in simulation mode with seeds = %d and %d", flags.seed1, flags.seed2)
+		config.Seed1 = flags.seed1
+		config.Seed2 = flags.seed2
 	}
 
 	global, err := lib.NewGlobal(config)
@@ -95,8 +98,25 @@ func main() {
 		global.FanControl.Start()
 	}
 
+	closeTelemetry, err := setupTelemetry(config, global)
+	if err != nil {
+		clog.Errorf("cannot start telemetry: %v", err)
+		exitCode = 1
+		return
+	}
+
+	closeMetricsServer, err := setupMetricsServer(config)
+	if err != nil {
+		clog.Errorf("cannot start http server: %v", err)
+		exitCode = 1
+		return
+	}
+
 	// wait until we're politely asked to leave
 	<-stop
+	ctx, _ := context.WithTimeout(context.Background(), 30*time.Second)
+	closeMetricsServer(ctx)
+	closeTelemetry(ctx)
 	signal.Stop(stop)
 	_ = global.FanControl.Exit()
 	notifyLeaving()
diff --git a/metrics.go b/metrics.go
new file mode 100644
index 0000000..0486121
--- /dev/null
+++ b/metrics.go
@@ -0,0 +1,36 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"sync"
+
+	"github.com/creativeprojects/clog"
+	"github.com/creativeprojects/hardware-events/cfg"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+func setupMetricsServer(config cfg.Config) (func(context.Context) error, error) {
+	if !config.Telemetry.Prometheus.Enabled {
+		return func(_ context.Context) error { return nil }, nil
+	}
+	clog.Debugf("serving metrics at %s/metrics", config.Telemetry.Prometheus.Listen)
+	http.Handle("/metrics", promhttp.Handler())
+	server := http.Server{
+		Addr: config.Telemetry.Prometheus.Listen,
+	}
+	wg := new(sync.WaitGroup)
+	wg.Go(func() {
+		if err := server.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
+			clog.Errorf("metrics server: %s", err)
+		}
+		clog.Debug("metrics server closed")
+	})
+
+	return func(ctx context.Context) error {
+		err := server.Shutdown(ctx)
+		wg.Wait()
+		return err
+	}, nil
+}
diff --git a/telemetry.go b/telemetry.go
new file mode 100644
index 0000000..0e62644
--- /dev/null
+++ b/telemetry.go
@@ -0,0 +1,24 @@
+package main
+
+import (
+	"context"
+
+	"github.com/creativeprojects/hardware-events/cfg"
+	"github.com/creativeprojects/hardware-events/lib"
+	"go.opentelemetry.io/otel/exporters/prometheus"
+)
+
+func setupTelemetry(config cfg.Config, global *lib.Global) (func(context.Context) error, error) {
+	if !config.Telemetry.Prometheus.Enabled {
+		return func(_ context.Context) error { return nil }, nil
+	}
+	exporter, err := prometheus.New()
+	if err != nil {
+		return nil, err
+	}
+	telemetry, err := lib.NewTelemetry(global, exporter)
+	if err != nil {
+		return func(_ context.Context) error { return nil }, err
+	}
+	return telemetry.Shutdown, nil
+}