From bea79b5102fb8eb8bc417f3f5678f85dac66e6b3 Mon Sep 17 00:00:00 2001
From: Joshua Boniface <joshuab@clearcable.ca>
Date: Mon, 15 Nov 2021 10:49:03 -0500
Subject: [PATCH] Add immutability to PVC subrole

1. Remove the obsolete pvc-vacuum script install.

2. Remove notifies when modifying configs; we do not want to restart the
daemons uncontrolled.

3. Add bootstrap check to package installs so they only happen on
bootstrap.

This ensures this part of the role, on re-runs, will *only* update
configs and not actually touch the running daemon. This makes it safe to
run before a oneshot/update-pvc-daemons.yml playbook run.
---
 roles/pvc/handlers/main.yml           | 10 ---------
 roles/pvc/tasks/pvc/main.yml          | 11 +---------
 roles/pvc/templates/pvc/pvc-vacuum.j2 | 31 ---------------------------
 3 files changed, 1 insertion(+), 51 deletions(-)
 delete mode 100755 roles/pvc/templates/pvc/pvc-vacuum.j2

diff --git a/roles/pvc/handlers/main.yml b/roles/pvc/handlers/main.yml
index 1c8bfeb..d165e02 100644
--- a/roles/pvc/handlers/main.yml
+++ b/roles/pvc/handlers/main.yml
@@ -40,13 +40,3 @@
 - name: restart ceph-mgr
   shell: "{% if is_coordinator %}sleep {{ 30 * (hostvars[inventory_hostname].ansible_local.host_id|int - 1) }} &&  systemctl restart ceph-mgr@{{ this_node }}.service{% endif %}"
   ignore_errors: true
-
-- name: restart pvcnoded
-  shell: "{% if is_coordinator %}sleep {{ 30 * (hostvars[inventory_hostname].ansible_local.host_id|int - 1) }} &&{% endif %} systemctl restart pvcnoded.service"
-  ignore_errors: true
-  when: bootstrap is not defined
-
-- name: restart pvcapid
-  shell: "{% if is_coordinator %}sleep {{ 30 * (hostvars[inventory_hostname].ansible_local.host_id|int - 1) }} &&{% endif %} systemctl restart pvcapid.service"
-  ignore_errors: true
-  when: bootstrap is not defined
diff --git a/roles/pvc/tasks/pvc/main.yml b/roles/pvc/tasks/pvc/main.yml
index f645fd4..6ebd154 100644
--- a/roles/pvc/tasks/pvc/main.yml
+++ b/roles/pvc/tasks/pvc/main.yml
@@ -10,13 +10,12 @@
       - ethtool
       - jq
     state: latest
+  when: bootstrap is defined and bootstrap
 
 - name: install pvc node daemon configuration
   template:
     src: pvc/{{ item }}.j2
     dest: /etc/pvc/{{ item }}
-  notify:
-    - restart pvcnoded
   with_items:
     - pvcnoded.yaml
 
@@ -24,8 +23,6 @@
   template:
     src: pvc/{{ item }}.j2
     dest: /etc/pvc/{{ item }}
-  notify:
-    - restart pvcapid
   with_items:
     - pvcapid.yaml
 
@@ -55,12 +52,6 @@
   run_once: yes
   when: bootstrap is defined and bootstrap and is_coordinator
 
-- name: install daily vacuum script
-  template:
-    src: pvc/pvc-vacuum.j2
-    dest: /etc/cron.daily/pvc-vacuum
-    mode: 0755
-
 - meta: flush_handlers
 
 - name: ensure services are started and running
diff --git a/roles/pvc/templates/pvc/pvc-vacuum.j2 b/roles/pvc/templates/pvc/pvc-vacuum.j2
deleted file mode 100755
index 2b0fd1b..0000000
--- a/roles/pvc/templates/pvc/pvc-vacuum.j2
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/bin/bash
-# Daily vaccuum script for PVC daemons
-# {{ ansible_managed }}
-
-# This script cleans up the PostgreSQL databases as well as the Zookeeper
-# database. This prevents filesystem growth balooning after loong running
-# periods.
-
-echo -e "----------------------------"              &>>/var/log/pvc/vacuum.log
-echo -e "$( date )"                                 &>>/var/log/pvc/vacuum.log
-echo -e "----------------------------"              &>>/var/log/pvc/vacuum.log
-
-#
-# PostgreSQL
-#
-
-# Don't run if we aren't the Patroni primary
-HOSTNAME="$( hostname -s )"
-PRIMARY="$( patronictl -c /etc/patroni/config.yml -d zookeeper://localhost:2181 list --format json \
-              | jq -r '.[] | select(.Role == "Leader") | .Member' )"
-if [[ $HOSTNAME == $PRIMARY ]]; then
-    # Analyze the database
-    su postgres -c 'vacuumdb --verbose --analyze --all' &>>/var/log/pvc/vacuum.log
-fi
-
-#
-# Zookeeper
-#
-
-export ZOOCFG=/etc/zookeeper/conf/zoo.cfg
-/usr/share/zookeeper/bin/zkCleanup.sh -n 7          &>>/var/log/pvc/vacuum.log