Merge pull request #2228 from edx/max/mongo-serverstatus

Switch to using db.serverStatus instead of mongostat

playbooks/roles/mongo_3_0/defaults/main.yml

@@ -77,4 +77,4 @@ MONGO_S3_S3CMD_CONFIG: "{{ COMMON_DATA_DIR }}/mongo-s3-backup.s3cfg"
 MONGO_S3_BACKUP_AWS_ACCESS_KEY: !!null
 MONGO_S3_BACKUP_AWS_SECRET_KEY: !!null
 
-MONGO_LOG_MONGOSTAT: true
+MONGO_LOG_SERVERSTATUS: true

playbooks/roles/mongo_3_0/tasks/main.yml

@@ -57,21 +57,21 @@
     - "{{ mongo_log_dir }}"
     - "{{ mongo_journal_dir }}"
 
-- name: add mongostat logging script
+- name: add serverStatus logging script
   template:
-    src="log-mongostat.sh.j2"
-    dest="{{ COMMON_BIN_DIR }}/log-mongostat.sh"
+    src="log-mongo-serverStatus.sh.j2"
+    dest="{{ COMMON_BIN_DIR }}/log-mongo-serverStatus.sh"
     owner="{{ mongo_user }}"
     group="{{ mongo_user }}"
     mode=0700
-  when: MONGO_LOG_MONGOSTAT
+  when: MONGO_LOG_SERVERSTATUS
 
-- name: add mongostat logging script to cron
+- name: add serverStatus logging script to cron
   cron:
     name: "mongostat logging job"
-    job: /edx/bin/log-mongostat.sh >{{ mongo_log_dir }}/mongostat.log 2>&1
+    job: /edx/bin/log-mongo-serverStatus.sh >> {{ mongo_log_dir }}/serverStatus.log 2>&1
   become: yes
-  when: MONGO_LOG_MONGOSTAT
+  when: MONGO_LOG_SERVERSTATUS
 
 - name: stop mongod service
   service: name=mongod state=stopped

playbooks/roles/mongo_3_0/templates/log-mongo-serverStatus.sh.j2

+#!/usr/bin/env bash
+# Using JSON.stringify forces output of normal JSON, as opposed to Mongo's weird non-compliant extended JSON
+/usr/bin/mongo -u {{ MONGO_ADMIN_USER }} --authenticationDatabase admin -p '{{ MONGO_ADMIN_PASSWORD }}' --quiet <<< 'JSON.stringify(db.serverStatus())'

playbooks/roles/mongo_3_0/templates/log-mongostat.sh.j2

-/usr/bin/mongostat -u {{ MONGO_ADMIN_USER }} --authenticationDatabase admin -p '{{ MONGO_ADMIN_PASSWORD }}' --all -n 1 --json