From a9e6a0a938ef6eaa7bb6e27ed1f4051510c45197 Mon Sep 17 00:00:00 2001
From: Jason O'Donnell <2160810+jasonodonnell@users.noreply.github.com>
Date: Wed, 6 Nov 2019 11:06:57 -0500
Subject: [PATCH] Add preStop lifecycle hook (#105)

* Add preStop lifecycle hook

* Fix typo in comment
---
 templates/server-statefulset.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/templates/server-statefulset.yaml b/templates/server-statefulset.yaml
index e13d680..fcbae55 100644
--- a/templates/server-statefulset.yaml
+++ b/templates/server-statefulset.yaml
@@ -102,6 +102,14 @@ spec:
             periodSeconds: 3
             successThreshold: 1
             timeoutSeconds: 5
+          lifecycle:
+            # Vault container doesn't receive SIGTERM from Kubernetes
+            # and after the grace period ends, Kube sends SIGKILL.  This 
+            # causes issues with graceful shutdowns such as deregistering itself
+            # from Consul (zombie services).
+            preStop:
+              exec:
+                command: ["/bin/sh","-c","kill -SIGTERM $(pidof vault)"]
       {{- if .Values.global.imagePullSecrets }}
       imagePullSecrets:
         {{- toYaml .Values.global.imagePullSecrets | nindent 8 }}