feat(netdata): setup slack alerts

Author: bdossantos

.env.dist

@@ -1 +1,2 @@
 POSTGRES_PASSWORD=secret
+SLACK_WEBHOOK_URL=https://hooks.slack.com/services/XXXX

docker-compose.yml

@@ -8,15 +8,20 @@ services:
     container_name: netdata
     cap_add:
       - SYS_PTRACE
+    entrypoint: /netdata
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
       - /volume1/docker/netdata/config:/etc/netdata:rw
       - /volume1/docker/netdata/log:/var/log/netdata:rw
+      - /volume1/homes/admin/Code/bds.home/scripts/netdata:/netdata
       - /proc:/host/proc:ro
       - /sys:/host/sys:ro
+    env_file:
+      - /volume1/homes/admin/Code/bds.home/.env
     environment:
       - NETDATA_IP=0.0.0.0
       - NETDATA_PORT=19999
+      - SLACK_CHANNEL=general
     ports:
       - 0.0.0.0:19999:19999/tcp
     network_mode: host

scripts/netdata

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o pipefail
+set -o nounset
+
+cat <<EOF > /etc/netdata/health_alarm_notify.conf
+SEND_SLACK="YES"
+SLACK_WEBHOOK_URL="${SLACK_WEBHOOK_URL='https://hooks.slack.com/services/XXXX'}"
+DEFAULT_RECIPIENT_SLACK="${SLACK_CHANNEL:='general'}"
+EOF
+
+exec /run.sh