remove prometheus alertmanager

grafana has basic alert mechanisms included, might be enough for most
usecases?

.env.sample

@@ -13,12 +13,8 @@ TIMEOUT=120
 
 # Monitoring Server
 #
-## Prometheus, Alertmanager
+## Prometheus
 # COMPOSE_FILE="$COMPOSE_FILE:compose.prometheus.yml"
-# ALERTMANAGER_SMTP_FROM=noreply@autonomic.zone
-# ALERTMANAGER_SMTP_HOST=mail.gandi.net:587
-# ALERTMANAGER_SMTP_TO=kaboom@autonomic.zone
-# SECRET_ALERTMANAGER_SMTP_PASSWORD_VERSION=v1
 # PROMETHEUS_RETENTION_TIME=1y
 ## Loki
 # Loki Server

abra.sh

@@ -8,7 +8,6 @@ export GRAFANA_CUSTOM_INI_VERSION=v2
 export PROMTAIL_YML_VERSION=v1
 export LOKI_YML_VERSION=v1
 export PROMETHEUS_YML_VERSION=v1
-export ALERTMANAGER_CONFIG_VERSION=v1
 
 # creates a default prometheus scrape config for a given node
 add_node(){

alertmanager.yml.tmpl

@@ -1,13 +0,0 @@
-global:
-  smtp_from: {{ env "ALERTMANAGER_SMTP_FROM" }}
-  smtp_smarthost: {{ env "ALERTMANAGER_SMTP_HOST" }}
-  smtp_auth_username: {{ env "ALERTMANAGER_SMTP_FROM" }}
-  smtp_auth_password: {{ secret "alertmanager_smtp_password" }}
-
-route:
-  receiver: "kaboom-mailer"
-
-receivers:
-  - name: "kaboom-mailer"
-    email_configs:
-      - to: {{ env "ALERTMANAGER_SMTP_TO" }}

compose.prometheus.yml

@@ -31,42 +31,11 @@ services:
         - "traefik.http.routers.${STACK_NAME}-prometheus.tls.certresolver=${LETS_ENCRYPT_ENV}"
         - "traefik.http.routers.${STACK_NAME}-prometheus.middlewares=basicauth@file"
 
-
-  alertmanager:
-    image: prom/alertmanager:v0.25.0
-    volumes:
-      - alertmanager-data:/etc/alertmanager
-    command:
-      - "--config.file=/etc/alertmanager/config.yml"
-      - "--storage.path=/alertmanager"
-    networks:
-      - internal
-    secrets:
-      - alertmanager_smtp_password
-    configs:
-      - source: alertmanager_config
-        target: /etc/alertmanager/config.yml
-    environment:
-      - ALERTMANAGER_SMTP_FROM
-      - ALERTMANAGER_SMTP_HOST
-      - ALERTMANAGER_SMTP_TO
-
 configs:
   prometheus_yml:
     template_driver: golang
     name: ${STACK_NAME}_prometheus_yml_${PROMETHEUS_YML_VERSION}
     file: prometheus.yml.tmpl
-  alertmanager_config:
-    template_driver: golang
-    name: ${STACK_NAME}_alertmanager_config_${ALERTMANAGER_CONFIG_VERSION}
-    file: ./alertmanager.yml.tmpl
-
 
 volumes:
-  prometheus-data:
-  alertmanager-data:
-
-secrets:
-  alertmanager_smtp_password:
-    external: true
-    name: ${STACK_NAME}_alertmanager_smtp_password_${SECRET_ALERTMANAGER_SMTP_PASSWORD_VERSION}
+  prometheus-data: