From 5712a339ce7ed25410b45d7e439394f6e80945b9 Mon Sep 17 00:00:00 2001
From: Nemo <me@captnemo.in>
Date: Thu, 28 Dec 2017 17:59:54 +0530
Subject: [PATCH 1/7] Initial work on monitoring

- Using
https://github.com/danguita/prometheus-monitoring-stack/blob/master/docker-compose.yml
as base
---
 main.tf                                     |  6 ++
 monitoring/config/alert.rules               | 19 +++++
 monitoring/config/alertmanager.template.yml | 10 +++
 monitoring/config/prometheus.yml            | 17 +++++
 monitoring/data.tf                          | 16 ++++
 monitoring/images.tf                        | 18 +++++
 monitoring/main.tf                          | 85 +++++++++++++++++++++
 monitoring/variables.tf                     | 20 +++++
 variables.tf                                |  4 +
 9 files changed, 195 insertions(+)
 create mode 100644 monitoring/config/alert.rules
 create mode 100644 monitoring/config/alertmanager.template.yml
 create mode 100644 monitoring/config/prometheus.yml
 create mode 100644 monitoring/data.tf
 create mode 100644 monitoring/images.tf
 create mode 100644 monitoring/main.tf
 create mode 100644 monitoring/variables.tf

diff --git a/main.tf b/main.tf
index 9ad5848..312e21f 100644
--- a/main.tf
+++ b/main.tf
@@ -24,7 +24,13 @@ module "docker" {
   domain              = "bb8.fun"
 }
 
+
 module "radicale" {
   source = "radicale"
   domain = "radicale.bb8.fun"
 }
+
+module "monitoring" {
+  source              = "monitoring"
+  gf-security-admin-password = "${var.gf-security-admin-password}"
+}
diff --git a/monitoring/config/alert.rules b/monitoring/config/alert.rules
new file mode 100644
index 0000000..05be2cc
--- /dev/null
+++ b/monitoring/config/alert.rules
@@ -0,0 +1,19 @@
+# Alert for any instance that is unreachable for >1 minute.
+ALERT InstanceDown
+  IF up == 0
+  FOR 1m
+  LABELS { severity = "page" }
+  ANNOTATIONS {
+    summary = "Instance {{ $labels.instance }} down",
+    description = "{{ $labels.instance }} of job {{ $labels.job }} has been down for more than 1 minute.",
+  }
+
+# Alert for any instance that is under high load for >1 minute.
+ALERT HighLoad
+  IF node_load1 > 0.85
+  FOR 1m
+  LABELS { severity = "page" }
+  ANNOTATIONS {
+    summary = "Instance {{ $labels.instance }} is under high load",
+    description = "{{ $labels.instance }} of job {{ $labels.job }} has been under high load for more than 1 minute.",
+}
diff --git a/monitoring/config/alertmanager.template.yml b/monitoring/config/alertmanager.template.yml
new file mode 100644
index 0000000..b8ee17c
--- /dev/null
+++ b/monitoring/config/alertmanager.template.yml
@@ -0,0 +1,10 @@
+route:
+  receiver: "slack"
+
+receivers:
+  - name: "slack"
+    slack_configs:
+      - send_resolved: true
+        username: "ALERT_SLACK_USERNAME"
+        channel: "ALERT_SLACK_CHANNEL"
+api_url: "ALERT_SLACK_INCOMING_WEBHOOK_URL"
diff --git a/monitoring/config/prometheus.yml b/monitoring/config/prometheus.yml
new file mode 100644
index 0000000..f531679
--- /dev/null
+++ b/monitoring/config/prometheus.yml
@@ -0,0 +1,17 @@
+global:
+  scrape_interval: 15s
+  external_labels:
+    monitor: "docker-monitor"
+
+scrape_configs:
+  - job_name: "prometheus"
+    static_configs:
+      - targets: ["prometheus:9090"]
+
+  - job_name: "node"
+    scrape_interval: 5s
+    static_configs:
+      - targets: ["node_exporter:9100"]
+
+rule_files:
+- "alert.rules"
diff --git a/monitoring/data.tf b/monitoring/data.tf
new file mode 100644
index 0000000..91f1c7c
--- /dev/null
+++ b/monitoring/data.tf
@@ -0,0 +1,16 @@
+data "docker_registry_image" "grafana" {
+  name = "grafana/grafana"
+}
+
+data "docker_registry_image" "prometheus" {
+  name = "prom/prometheus"
+}
+
+data "docker_registry_image" "alertmanager" {
+  name = "prom/alertmanager"
+}
+
+data "docker_registry_image" "nodeexporter" {
+  name = "prom/nodeexporter"
+}
+
diff --git a/monitoring/images.tf b/monitoring/images.tf
new file mode 100644
index 0000000..a5ad812
--- /dev/null
+++ b/monitoring/images.tf
@@ -0,0 +1,18 @@
+resource "docker_image" "grafana" {
+  name          = "${data.docker_registry_image.grafana.name}"
+  pull_triggers = ["${data.docker_registry_image.grafana.sha256_digest}"]
+}
+
+resource "docker_image" "prometheus" {
+  name          = "${data.docker_registry_image.prometheus.name}"
+  pull_triggers = ["${data.docker_registry_image.prometheus.sha256_digest}"]
+}
+
+resource "docker_image" "alertmanager" {
+  name          = "${data.docker_registry_image.alertmanager.name}"
+  pull_triggers = ["${data.docker_registry_image.alertmanager.sha256_digest}"]
+}
+resource "docker_image" "nodeexporter" {
+  name          = "${data.docker_registry_image.nodeexporter.name}"
+  pull_triggers = ["${data.docker_registry_image.nodeexporter.sha256_digest}"]
+}
diff --git a/monitoring/main.tf b/monitoring/main.tf
new file mode 100644
index 0000000..8cbf0b4
--- /dev/null
+++ b/monitoring/main.tf
@@ -0,0 +1,85 @@
+resource docker_container "grafana" {
+  name  = "grafana"
+  image = "${docker_image.grafana.latest}"
+
+  labels {
+    # "traefik.frontend.auth.basic"                      = "${var.basic_auth}"
+    "traefik.port"                                     = 3000
+    "traefik.enable"                                   = "true"
+    "traefik.frontend.headers.SSLTemporaryRedirect"    = "true"
+    "traefik.frontend.headers.STSSeconds"              = "2592000"
+    "traefik.frontend.headers.STSIncludeSubdomains"    = "false"
+    "traefik.frontend.headers.contentTypeNosniff"      = "true"
+    "traefik.frontend.headers.browserXSSFilter"        = "true"
+    # "traefik.frontend.headers.customResponseHeaders"   = "${var.xpoweredby}"
+    # "traefik.frontend.headers.customFrameOptionsValue" = "${var.xfo_allow}"
+  }
+
+  volumes {
+    host_path      = "/mnt/xwing/data/grafana"
+    container_path = "/var/lib/grafana"
+  }
+
+  links = ["prometheus"]
+
+  restart               = "unless-stopped"
+  destroy_grace_seconds = 10
+  must_run              = true
+}
+
+resource docker_container "prometheus" {
+  name  = "prometheus"
+  image = "${docker_image.prometheus.latest}"
+
+  command = ["-config.file=/etc/prometheus/prometheus.yml"]
+
+  volumes {
+    host_path      = "/mnt/xwing/data/prometheus"
+    container_path = "/prometheus"
+  }
+
+  upload {
+    content = "${file("${path.module}/config/prometheus.yml")}"
+    file    = "/etc/prometheus/prometheus.yml"
+  }
+
+  links = ["nodeexporter"]
+
+  restart               = "unless-stopped"
+  destroy_grace_seconds = 10
+  must_run              = true
+}
+
+resource docker_container "nodeexporter" {
+  name  = "nodeexporter"
+  image = "${docker_image.nodeexporter.latest}"
+
+  command = ["-config.file=/etc/prometheus/prometheus.yml"]
+
+  volumes {
+    host_path      = "/proc"
+    container_path = "/host/proc"
+  }
+
+  volumes {
+    host_path      = "/sys"
+    container_path = "/host/sys"
+  }
+
+  volumes {
+    host_path      = "/"
+    container_path = "/rootfs"
+    read_only      = true
+  }
+
+  command = [
+    "-collector.procfs=/host/proc",
+    "-collector.sysfs=/host/sys",
+    "-collector.filesystem.ignored-mount-points=\"^/(sys|proc|dev|host|etc)($$|/)\""
+  ]
+
+  restart               = "unless-stopped"
+  destroy_grace_seconds = 10
+  must_run              = true
+}
+
diff --git a/monitoring/variables.tf b/monitoring/variables.tf
new file mode 100644
index 0000000..6eac904
--- /dev/null
+++ b/monitoring/variables.tf
@@ -0,0 +1,20 @@
+variable "gf-security-admin-password" {
+  type = "string"
+}
+# variable "email" {
+#   type = "string"
+# }
+
+# variable "domain" {
+#   type = "string"
+# }
+
+variable "alert-slack-username" {
+  default = "Prometheus"
+}
+variable "alert-slack-channel" {
+  default = "#notifications"
+}
+variable "alert-slack-incoming-webhook" {
+  default = "https://hooks.slack.com/whatever"
+}
diff --git a/variables.tf b/variables.tf
index 1028573..2524023 100644
--- a/variables.tf
+++ b/variables.tf
@@ -32,3 +32,7 @@ variable "ips" {
     static = "139.59.48.222"
   }
 }
+
+variable "gf-security-admin-password" {
+  type = "string"
+}

From e8bb8a01b2b58cc4112fc8739ae43e5a2e420460 Mon Sep 17 00:00:00 2001
From: Nemo <me@captnemo.in>
Date: Thu, 28 Dec 2017 18:50:38 +0530
Subject: [PATCH 2/7] command line flag fixes

---
 monitoring/data.tf   |  8 ++++----
 monitoring/images.tf |  9 +++++----
 monitoring/main.tf   | 10 ++++------
 3 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/monitoring/data.tf b/monitoring/data.tf
index 91f1c7c..b3010c6 100644
--- a/monitoring/data.tf
+++ b/monitoring/data.tf
@@ -6,11 +6,11 @@ data "docker_registry_image" "prometheus" {
   name = "prom/prometheus"
 }
 
-data "docker_registry_image" "alertmanager" {
-  name = "prom/alertmanager"
-}
+# data "docker_registry_image" "alertmanager" {
+#   name = "prom/alertmanager"
+# }
 
 data "docker_registry_image" "nodeexporter" {
-  name = "prom/nodeexporter"
+  name = "prom/node-exporter"
 }
 
diff --git a/monitoring/images.tf b/monitoring/images.tf
index a5ad812..2a7d60d 100644
--- a/monitoring/images.tf
+++ b/monitoring/images.tf
@@ -8,10 +8,11 @@ resource "docker_image" "prometheus" {
   pull_triggers = ["${data.docker_registry_image.prometheus.sha256_digest}"]
 }
 
-resource "docker_image" "alertmanager" {
-  name          = "${data.docker_registry_image.alertmanager.name}"
-  pull_triggers = ["${data.docker_registry_image.alertmanager.sha256_digest}"]
-}
+# resource "docker_image" "alertmanager" {
+#   name          = "${data.docker_registry_image.alertmanager.name}"
+#   pull_triggers = ["${data.docker_registry_image.alertmanager.sha256_digest}"]
+# }
+
 resource "docker_image" "nodeexporter" {
   name          = "${data.docker_registry_image.nodeexporter.name}"
   pull_triggers = ["${data.docker_registry_image.nodeexporter.sha256_digest}"]
diff --git a/monitoring/main.tf b/monitoring/main.tf
index 8cbf0b4..0d8e5b4 100644
--- a/monitoring/main.tf
+++ b/monitoring/main.tf
@@ -31,7 +31,7 @@ resource docker_container "prometheus" {
   name  = "prometheus"
   image = "${docker_image.prometheus.latest}"
 
-  command = ["-config.file=/etc/prometheus/prometheus.yml"]
+  command = ["--config.file=/etc/prometheus/prometheus.yml"]
 
   volumes {
     host_path      = "/mnt/xwing/data/prometheus"
@@ -54,8 +54,6 @@ resource docker_container "nodeexporter" {
   name  = "nodeexporter"
   image = "${docker_image.nodeexporter.latest}"
 
-  command = ["-config.file=/etc/prometheus/prometheus.yml"]
-
   volumes {
     host_path      = "/proc"
     container_path = "/host/proc"
@@ -73,9 +71,9 @@ resource docker_container "nodeexporter" {
   }
 
   command = [
-    "-collector.procfs=/host/proc",
-    "-collector.sysfs=/host/sys",
-    "-collector.filesystem.ignored-mount-points=\"^/(sys|proc|dev|host|etc)($$|/)\""
+    "--collector.procfs=/host/proc",
+    "--collector.sysfs=/host/sys",
+    "--collector.filesystem.ignored-mount-points=\"^/(sys|proc|dev|host|etc)($$|/)\""
   ]
 
   restart               = "unless-stopped"

From 26d9357793fb74d4521e97e6b671aaaff49ddd2e Mon Sep 17 00:00:00 2001
From: Nemo <me@captnemo.in>
Date: Sat, 6 Jan 2018 13:51:03 +0530
Subject: [PATCH 3/7] Upgrade prometheus flags

---
 monitoring/main.tf | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/monitoring/main.tf b/monitoring/main.tf
index 0d8e5b4..30f0045 100644
--- a/monitoring/main.tf
+++ b/monitoring/main.tf
@@ -71,8 +71,8 @@ resource docker_container "nodeexporter" {
   }
 
   command = [
-    "--collector.procfs=/host/proc",
-    "--collector.sysfs=/host/sys",
+    "--path.procfs=/host/proc",
+    "--path.sysfs=/host/sys",
     "--collector.filesystem.ignored-mount-points=\"^/(sys|proc|dev|host|etc)($$|/)\""
   ]
 

From baf56f0edb11e7fd4093f733cf4ea9f9669df498 Mon Sep 17 00:00:00 2001
From: Nemo <me@captnemo.in>
Date: Sat, 6 Jan 2018 14:39:49 +0530
Subject: [PATCH 4/7] Fixes nodeexporter

---
 main.tf                          |  4 ++--
 monitoring/config/prometheus.yml |  7 ++++++-
 monitoring/data.tf               |  1 -
 monitoring/main.tf               | 28 ++++++++++++++++++----------
 monitoring/variables.tf          |  9 ++++++---
 5 files changed, 32 insertions(+), 17 deletions(-)

diff --git a/main.tf b/main.tf
index 312e21f..d94433b 100644
--- a/main.tf
+++ b/main.tf
@@ -24,13 +24,13 @@ module "docker" {
   domain              = "bb8.fun"
 }
 
-
 module "radicale" {
   source = "radicale"
   domain = "radicale.bb8.fun"
 }
 
 module "monitoring" {
-  source              = "monitoring"
+  source                     = "monitoring"
   gf-security-admin-password = "${var.gf-security-admin-password}"
+  domain                     = "bb8.fun"
 }
diff --git a/monitoring/config/prometheus.yml b/monitoring/config/prometheus.yml
index f531679..85b0d8f 100644
--- a/monitoring/config/prometheus.yml
+++ b/monitoring/config/prometheus.yml
@@ -11,7 +11,12 @@ scrape_configs:
   - job_name: "node"
     scrape_interval: 5s
     static_configs:
-      - targets: ["node_exporter:9100"]
+      - targets: ["nodeexporter:9100"]
+
+  - job_name: 'cadvisor'
+    scrape_interval: 5s
+    static_configs:
+      - targets: ['cadvisor:8080']
 
 rule_files:
 - "alert.rules"
diff --git a/monitoring/data.tf b/monitoring/data.tf
index b3010c6..9a192aa 100644
--- a/monitoring/data.tf
+++ b/monitoring/data.tf
@@ -13,4 +13,3 @@ data "docker_registry_image" "prometheus" {
 data "docker_registry_image" "nodeexporter" {
   name = "prom/node-exporter"
 }
-
diff --git a/monitoring/main.tf b/monitoring/main.tf
index 30f0045..9ed8ac5 100644
--- a/monitoring/main.tf
+++ b/monitoring/main.tf
@@ -4,13 +4,14 @@ resource docker_container "grafana" {
 
   labels {
     # "traefik.frontend.auth.basic"                      = "${var.basic_auth}"
-    "traefik.port"                                     = 3000
-    "traefik.enable"                                   = "true"
-    "traefik.frontend.headers.SSLTemporaryRedirect"    = "true"
-    "traefik.frontend.headers.STSSeconds"              = "2592000"
-    "traefik.frontend.headers.STSIncludeSubdomains"    = "false"
-    "traefik.frontend.headers.contentTypeNosniff"      = "true"
-    "traefik.frontend.headers.browserXSSFilter"        = "true"
+    "traefik.port"                                  = 3000
+    "traefik.enable"                                = "true"
+    "traefik.frontend.headers.SSLTemporaryRedirect" = "true"
+    "traefik.frontend.headers.STSSeconds"           = "2592000"
+    "traefik.frontend.headers.STSIncludeSubdomains" = "false"
+    "traefik.frontend.headers.contentTypeNosniff"   = "true"
+    "traefik.frontend.headers.browserXSSFilter"     = "true"
+
     # "traefik.frontend.headers.customResponseHeaders"   = "${var.xpoweredby}"
     # "traefik.frontend.headers.customFrameOptionsValue" = "${var.xfo_allow}"
   }
@@ -22,6 +23,11 @@ resource docker_container "grafana" {
 
   links = ["prometheus"]
 
+  env = [
+    "GF_SECURITY_ADMIN_PASSWORD=${var.gf-security-admin-password}",
+    "GF_SERVER_ROOT_URL=https://grafana.${var.domain}",
+  ]
+
   restart               = "unless-stopped"
   destroy_grace_seconds = 10
   must_run              = true
@@ -31,6 +37,9 @@ resource docker_container "prometheus" {
   name  = "prometheus"
   image = "${docker_image.prometheus.latest}"
 
+  # prometheus:prometheus
+  user = "985:983"
+
   command = ["--config.file=/etc/prometheus/prometheus.yml"]
 
   volumes {
@@ -43,7 +52,7 @@ resource docker_container "prometheus" {
     file    = "/etc/prometheus/prometheus.yml"
   }
 
-  links = ["nodeexporter"]
+  links = ["nodeexporter", "cadvisor"]
 
   restart               = "unless-stopped"
   destroy_grace_seconds = 10
@@ -73,11 +82,10 @@ resource docker_container "nodeexporter" {
   command = [
     "--path.procfs=/host/proc",
     "--path.sysfs=/host/sys",
-    "--collector.filesystem.ignored-mount-points=\"^/(sys|proc|dev|host|etc)($$|/)\""
+    "--collector.filesystem.ignored-mount-points=\"^/(sys|proc|dev|host|etc)($$|/)\"",
   ]
 
   restart               = "unless-stopped"
   destroy_grace_seconds = 10
   must_run              = true
 }
-
diff --git a/monitoring/variables.tf b/monitoring/variables.tf
index 6eac904..5afcf1c 100644
--- a/monitoring/variables.tf
+++ b/monitoring/variables.tf
@@ -1,20 +1,23 @@
 variable "gf-security-admin-password" {
   type = "string"
 }
+
 # variable "email" {
 #   type = "string"
 # }
 
-# variable "domain" {
-#   type = "string"
-# }
+variable "domain" {
+  type = "string"
+}
 
 variable "alert-slack-username" {
   default = "Prometheus"
 }
+
 variable "alert-slack-channel" {
   default = "#notifications"
 }
+
 variable "alert-slack-incoming-webhook" {
   default = "https://hooks.slack.com/whatever"
 }

From e06fd4ab8ed0cb6d3f12c98ed0c9fad9bcde7e43 Mon Sep 17 00:00:00 2001
From: Nemo <me@captnemo.in>
Date: Sat, 6 Jan 2018 15:55:39 +0530
Subject: [PATCH 5/7] Adds prometheus monitoring

---
 monitoring/config/prometheus.yml |  7 ++++++-
 monitoring/data.tf               |  4 ++++
 monitoring/images.tf             | 10 +++++-----
 monitoring/transmission.tf       | 16 ++++++++++++++++
 monitoring/variables.tf          |  4 ----
 5 files changed, 31 insertions(+), 10 deletions(-)
 create mode 100644 monitoring/transmission.tf

diff --git a/monitoring/config/prometheus.yml b/monitoring/config/prometheus.yml
index 85b0d8f..5cfe42a 100644
--- a/monitoring/config/prometheus.yml
+++ b/monitoring/config/prometheus.yml
@@ -6,7 +6,7 @@ global:
 scrape_configs:
   - job_name: "prometheus"
     static_configs:
-      - targets: ["prometheus:9090"]
+      - targets: ["localhost:9090"]
 
   - job_name: "node"
     scrape_interval: 5s
@@ -18,5 +18,10 @@ scrape_configs:
     static_configs:
       - targets: ['cadvisor:8080']
 
+  - job_name: 'transmission'
+    scrape_interval: 5s
+    static_configs:
+      - targets: ['transmission-exporter:19091']
+
 rule_files:
 - "alert.rules"
diff --git a/monitoring/data.tf b/monitoring/data.tf
index 9a192aa..9852676 100644
--- a/monitoring/data.tf
+++ b/monitoring/data.tf
@@ -13,3 +13,7 @@ data "docker_registry_image" "prometheus" {
 data "docker_registry_image" "nodeexporter" {
   name = "prom/node-exporter"
 }
+
+data "docker_registry_image" "transmission-exporter" {
+  name = "captn3m0/transmission-exporter"
+}
diff --git a/monitoring/images.tf b/monitoring/images.tf
index 2a7d60d..46b903d 100644
--- a/monitoring/images.tf
+++ b/monitoring/images.tf
@@ -8,12 +8,12 @@ resource "docker_image" "prometheus" {
   pull_triggers = ["${data.docker_registry_image.prometheus.sha256_digest}"]
 }
 
-# resource "docker_image" "alertmanager" {
-#   name          = "${data.docker_registry_image.alertmanager.name}"
-#   pull_triggers = ["${data.docker_registry_image.alertmanager.sha256_digest}"]
-# }
-
 resource "docker_image" "nodeexporter" {
   name          = "${data.docker_registry_image.nodeexporter.name}"
   pull_triggers = ["${data.docker_registry_image.nodeexporter.sha256_digest}"]
 }
+
+resource "docker_image" "transmission-exporter" {
+  name          = "${data.docker_registry_image.transmission-exporter.name}"
+  pull_triggers = ["${data.docker_registry_image.transmission-exporter.sha256_digest}"]
+}
diff --git a/monitoring/transmission.tf b/monitoring/transmission.tf
new file mode 100644
index 0000000..c3e0018
--- /dev/null
+++ b/monitoring/transmission.tf
@@ -0,0 +1,16 @@
+# Transmission Exporter for prometheus
+# https://github.com/metalmatze/transmission-exporter
+resource docker_container "transmission-exporter" {
+  name  = "transmission-exporter"
+  image = "${docker_image.transmission-exporter.latest}"
+
+  links = ["transmission"]
+
+  env = [
+    "TRANSMISSION_ADDR=http://transmission:9091"
+  ]
+
+  restart               = "unless-stopped"
+  destroy_grace_seconds = 10
+  must_run              = true
+}
diff --git a/monitoring/variables.tf b/monitoring/variables.tf
index 5afcf1c..7f698e3 100644
--- a/monitoring/variables.tf
+++ b/monitoring/variables.tf
@@ -2,10 +2,6 @@ variable "gf-security-admin-password" {
   type = "string"
 }
 
-# variable "email" {
-#   type = "string"
-# }
-
 variable "domain" {
   type = "string"
 }

From cef86374c017acc61be862852d9ee67033565060 Mon Sep 17 00:00:00 2001
From: Nemo <me@captnemo.in>
Date: Tue, 9 Jan 2018 22:30:36 +0530
Subject: [PATCH 6/7] Fix transmission-exporter

---
 monitoring/data.tf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/monitoring/data.tf b/monitoring/data.tf
index 9852676..344dcc3 100644
--- a/monitoring/data.tf
+++ b/monitoring/data.tf
@@ -15,5 +15,5 @@ data "docker_registry_image" "nodeexporter" {
 }
 
 data "docker_registry_image" "transmission-exporter" {
-  name = "captn3m0/transmission-exporter"
+  name = "metalmatze/transmission-exporter"
 }

From 077302294cc3862d1d058b24ecd57f7b4e011484 Mon Sep 17 00:00:00 2001
From: Nemo <me@captnemo.in>
Date: Tue, 9 Jan 2018 22:31:37 +0530
Subject: [PATCH 7/7] docs update on transmission-exporter PR

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 1004586..32af9d3 100644
--- a/README.md
+++ b/README.md
@@ -89,6 +89,7 @@ Issues I've faced/reported as a result of this project:
 6. `ubooquity` docker container doesn't let you set admin password: https://github.com/linuxserver/docker-ubooquity/issues/17. (Couldn't reproduce, closed) :white_check_mark:
 7. Traefik customresponseheaders can't contain colons on the docker backend: https://github.com/containous/traefik/issues/2517. Fixed with https://github.com/containous/traefik/pull/2509 :white_check_mark:
 8. Traefik Security headers don't overwrite upstream headers: https://github.com/containous/traefik/issues/2618
+9. Transmission exporter broke with different data types while unmarshalling JSON in go. I filed a PR https://github.com/metalmatze/transmission-exporter/pull/2
 
 # Plumbing