FBR: Add monitoring for Pagure's celery redis queue

[Ricky Elrod <codeblock@xxxxxxxxxxxxxxxxx>]

This is an attempt to add some simple monitoring so if the Pagure task
queue starts backing up, we know about it.

---

commit f207778a0e5aceba6c18885be7478317aaeab4b0
Author: Ricky Elrod <codeblock@xxxxxxxxxxxxxxxxx>
Date:   Fri May 26 23:09:02 2017 +0000

    add simple monitoring for pagure's celery redis queue

    Signed-off-by: Ricky Elrod <codeblock@xxxxxxxxxxxxxxxxx>

diff --git a/roles/nagios_client/files/scripts/check_redis_queue.sh
b/roles/nagios_client/files/scripts/check_redis_queue.sh
new file mode 100644
index 0000000..ca1f186
--- /dev/null
+++ b/roles/nagios_client/files/scripts/check_redis_queue.sh
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+. /usr/lib64/nagios/plugins/utils.sh
+
+if [[ "$#" -ne 3 ]]; then
+  echo "Arguments: key warn crit"
+  exit $STATE_UNKNOWN
+fi
+
+tasks="$(redis-cli llen "$1" | awk '{print $1}')"
+
+check_range $tasks $2:$3
+status=$?
+
+if [[ "$status" == "$STATE_OK" ]]; then
+  echo "OK: $1 queue has $tasks tasks"
+elif [[ "$status" == "$STATE_WARNING" ]]; then
+  echo "WARNING: $1 queue has $tasks tasks"
+elif [[ "$status" == "$STATE_CRITICAL" ]]; then
+  echo "CRITICAL: $1 queue has $tasks tasks"
+fi
+
+exit $status
diff --git a/roles/nagios_client/tasks/main.yml
b/roles/nagios_client/tasks/main.yml
index 714be36..22ddd4f 100644
--- a/roles/nagios_client/tasks/main.yml
+++ b/roles/nagios_client/tasks/main.yml
@@ -73,6 +73,7 @@
   - check_osbs_builds.py
   - check_osbs_api.py
   - check_ipa_replication
+  - check_redis_queue.sh
   when: not inventory_hostname.startswith('noc')
   tags:
   - nagios_client
@@ -146,6 +147,7 @@
   - check_koschei_watcher_proc.cfg
   - check_testcloud.cfg
   - check_mirrorlist_docker_proxy.cfg
+  - check_celery_redis_queue.cfg
   notify:
   - restart nrpe
   tags:
diff --git a/roles/nagios_client/templates/check_celery_redis_queue.cfg.j2
b/roles/nagios_client/templates/check_celery_redis_queue.cfg.j2
new file mode 100644
index 0000000..56279f3
--- /dev/null
+++ b/roles/nagios_client/templates/check_celery_redis_queue.cfg.j2
@@ -0,0 +1 @@
+command[check_celery_redis_queue]=/usr/lib64/nagios/plugins/check_redis_queue.sh
celery 5 10
diff --git a/roles/nagios_server/files/nagios/services/pagure_redis.cfg
b/roles/nagios_server/files/nagios/services/pagure_redis.cfg
new file mode 100644
index 0000000..d5387d0
--- /dev/null
+++ b/roles/nagios_server/files/nagios/services/pagure_redis.cfg
@@ -0,0 +1,6 @@
+define service {
+  host_name             pagure01.fedoraproject.org
+  service_description   Redis/celery queue
+  check_command         check_by_nrpe!check_celery_redis_queue
+  use                   defaulttemplate
+}
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