diff --git a/.gitignore b/.gitignore
index 086253b..a34147e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 # Ignore all volatile files
 **/.terraform/modules
+**/.terraform/plugins
 **/terraform.tfstate*.backup
 
 # Ignore all credentials files
diff --git a/common/alerting-message/inputs.tf b/common/alerting-message/inputs.tf
new file mode 100644
index 0000000..f20bef7
--- /dev/null
+++ b/common/alerting-message/inputs.tf
@@ -0,0 +1,17 @@
+variable "oncall_24x7" {
+  type = "string"
+}
+
+variable "oncall_office_hours" {
+  type = "string"
+}
+
+variable "prepend_text" {
+  type    = "string"
+  default = ""
+}
+
+variable "append_text" {
+  type    = "string"
+  default = ""
+}
diff --git a/common/alerting-message/main.tf b/common/alerting-message/main.tf
new file mode 100644
index 0000000..3b3c84b
--- /dev/null
+++ b/common/alerting-message/main.tf
@@ -0,0 +1,15 @@
+data "template_file" "alerting-message" {
+  template = <<EOF
+$${prepend_text}
+{{#is_alert}}$${oncall_24x7}{{/is_alert}}
+{{#is_recovery}}$${oncall_24x7}{{/is_recovery}}
+{{#is_warning}}$${oncall_office_hours}{{/is_warning}}
+{{#is_warning_recovery}}$${oncall_office_hours}{{/is_warning_recovery}}
+$${append_text}
+EOF
+
+  vars {
+    oncall_24x7         = "${var.oncall_24x7}"
+    oncall_office_hours = "${var.oncall_office_hours}"
+  }
+}
diff --git a/common/alerting-message/output.tf b/common/alerting-message/output.tf
new file mode 100644
index 0000000..5166314
--- /dev/null
+++ b/common/alerting-message/output.tf
@@ -0,0 +1,3 @@
+output "alerting-message" {
+  value = "${data.template_file.alerting-message.rendered}"
+}