From c0acd3e994030e295bdfaec03e7ef7b51a1b1688 Mon Sep 17 00:00:00 2001
From: "Joshua M. Boniface" <joshua@boniface.me>
Date: Fri, 1 Sep 2023 15:42:21 -0400
Subject: [PATCH] Add daily Postgres vacuum script

---
 roles/pvc/tasks/patroni/main.yml             |  6 ++++++
 roles/pvc/templates/patroni/pvcdns-vacuum.j2 | 16 ++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 roles/pvc/templates/patroni/pvcdns-vacuum.j2

diff --git a/roles/pvc/tasks/patroni/main.yml b/roles/pvc/tasks/patroni/main.yml
index dfa4bac..bae0a1d 100644
--- a/roles/pvc/tasks/patroni/main.yml
+++ b/roles/pvc/tasks/patroni/main.yml
@@ -60,6 +60,12 @@
     dest: /usr/lib/check_mk_agent/plugins/postgres
     mode: 0755
 
+- name: install daily vacuum script
+  template:
+    src: patroni/pvcdns-vacuum.j2
+    dest: /etc/cron.daily/pvcdns-vacuum
+    mode: 0755
+
 - name: install initial schema files
   copy:
     src: "{{ item.src }}"
diff --git a/roles/pvc/templates/patroni/pvcdns-vacuum.j2 b/roles/pvc/templates/patroni/pvcdns-vacuum.j2
new file mode 100644
index 0000000..92d967b
--- /dev/null
+++ b/roles/pvc/templates/patroni/pvcdns-vacuum.j2
@@ -0,0 +1,16 @@
+#!/bin/bash
+# Daily vaccuum script for PVCDNS database
+# {{ ansible_managed }}
+
+# Don't run if we aren't primary
+HOSTNAME="$( hostname -s )"
+PRIMARY="$( pvc node list | grep primary | awk '{ print $1 }' )"
+if [[ $HOSTNAME != $PRIMARY ]]; then
+    exit 0
+fi
+
+# Analyze the database
+echo -e "----------------------------"                       &>>/var/log/pvc/pdns/vacuum.log
+echo -e "$( date )"                                          &>>/var/log/pvc/pdns/vacuum.log
+echo -e "----------------------------"                       &>>/var/log/pvc/pdns/vacuum.log
+su postgres -c 'psql pvcdns -c "VACUUM (VERBOSE, ANALYZE);"' &>>/var/log/pvc/pdns/vacuum.log