kandra: Pull instance storage device from nvme information.

puppet/kandra/files/postgresql/setup_disks.sh

@@ -1,12 +1,21 @@
-#!/bin/sh
+#!/bin/bash
 set -x
 set -e
 
-# This file only exists on the server, ignore its non-existence locally
-# shellcheck disable=SC1091
-. "/sys/dev/block/259:0/uevent"
+set -o pipefail
+
+LOCALDISK=$(
+    nvme list -o json \
+        | jq -r '.Devices[] | select(.ModelNumber | contains("Instance Storage")) | .DevicePath' \
+        | head -n1
+)
+
+if [ -z "$LOCALDISK" ]; then
+    echo "No instance storage found!"
+    nvme list
+    exit 1
+fi
 
-LOCALDISK="/dev/$DEVNAME"
 if ! grep -q "$LOCALDISK" /etc/fstab; then
     echo "$LOCALDISK   /srv  xfs    nofail,noatime 1 1" >>/etc/fstab
 fi

puppet/kandra/manifests/profile/postgresql.pp

@@ -4,8 +4,7 @@ class kandra::profile::postgresql inherits kandra::profile::base {
   include kandra::teleport::db
   include kandra::prometheus::postgresql
 
-  $common_packages = ['xfsprogs']
-  package { $common_packages: ensure => installed }
+  package { ['xfsprogs', 'nvme-cli']: ensure => installed }
 
   kandra::firewall_allow{ 'postgresql': }
 
@@ -27,7 +26,7 @@ class kandra::profile::postgresql inherits kandra::profile::base {
   }
   exec { 'setup_disks':
     command => '/root/setup_disks.sh',
-    require => Package["postgresql-${zulip::postgresql_common::version}", 'xfsprogs'],
+    require => Package["postgresql-${zulip::postgresql_common::version}", 'xfsprogs', 'nvme-cli'],
     unless  => 'test /var/lib/postgresql/ -ef /srv/postgresql/',
   }