1 files changed, 101 insertions, 0 deletions
diff --git a/terraform/telegraf/telegraf-os/telegraf.tf b/terraform/telegraf/telegraf-os/telegraf.tf
new file mode 100644
index 0000000..5a135b1
--- /dev/null
+++ b/terraform/telegraf/telegraf-os/telegraf.tf
@@ -0,0 +1,101 @@
+data "docker_registry_image" "telegraf" {
+  name = "telegraf:1.28.3-alpine"
+}
+
+locals {
+  docker_gid = 997
+  entrypoint = <<EOT
+#!/bin/sh
+set -x
+
+setcap cap_net_raw+ep /usr/bin/telegraf
+setcap cap_net_bind_service+ep /usr/bin/telegraf
+setcap cap_net_admin+ep /usr/bin/telegraf
+
+su-exec telegraf:${var.docker_gid} \
+  /usr/bin/telegraf --config /telegraf.conf
+EOT
+}
+
+resource "docker_image" "telegraf" {
+  name          = data.docker_registry_image.telegraf.name
+  pull_triggers = [data.docker_registry_image.telegraf.sha256_digest]
+}
+
+resource "docker_container" "telegraf" {
+  image = docker_image.telegraf.image_id
+  name  = "telegraf-os"
+
+  provisioner "local-exec" {
+    command = "ansible-playbook -l ${var.ansible_host} ${path.module}/ansible-config.yml"
+  }
+
+  network_mode = "host"
+
+  mounts {
+    type      = "bind"
+    source    = "/"
+    target    = "/hostfs"
+    read_only = true
+  }
+
+  mounts {
+    type      = "bind"
+    source    = "/etc/trygvis/telegraf.conf"
+    target    = "/telegraf.conf"
+    read_only = true
+  }
+
+  mounts {
+    type      = "bind"
+    source    = "/var/run/docker.sock"
+    target    = "/var/run/docker.sock"
+    read_only = true
+  }
+
+  entrypoint = [
+    "sh",
+    "-c",
+    local.entrypoint,
+  ]
+  #  command = [
+  #    "--config",
+  #    "/telegraf.conf"
+  #  ]
+
+  # Needed to get group_add to apply, if not entrypoint.sh drops the extra
+  # group.
+  #  user = "telegraf:telegraf"
+  #  group_add = [
+  #    "997" # for docker input
+  #  ]
+
+  capabilities {
+    add = [
+      "CAP_NET_RAW",
+      "CAP_NET_BIND_SERVICE",
+      "CAP_NET_ADMIN",
+    ]
+  }
+
+  #  cmd = [
+  #    "sudo",
+  #    "setcap",
+  #    "CAP_NET_ADMIN+epi",
+  #    "/usr/bin/telegraf"
+  #  ]
+
+  env = [
+    "INFLUX_URL=${var.influx_url}",
+    "INFLUX_TOKEN=${var.influx_token}",
+    "INFLUX_ORGANIZATION=${var.influx_organization}",
+    "INFLUX_BUCKET=${var.influx_bucket}",
+
+    "HOST_MOUNT_PREFIX=/hostfs",
+    "HOST_ETC=/hostfs/etc",
+    "HOST_PROC=/hostfs/proc",
+    "HOST_RUN=/hostfs/run",
+    "HOST_SYS=/hostfs/sys",
+    "HOST_VAR=/hostfs/var",
+  ]
+}