From 1276415dd088f0b9ee7c7564c67783807fd7ba26 Mon Sep 17 00:00:00 2001
From: Kevin Veen-Birkenbach <kevin@veen.world>
Date: Tue, 5 Jan 2021 18:17:04 +0100
Subject: [PATCH] Implemented systemd-email.service for
 native-pull-remote-backups

---
 README.md                                         |  5 ++---
 roles/native-pull-remote-backups/meta/main.yml    |  1 +
 .../templates/pull-remote-backups.service         |  1 +
 roles/native-systemd-email/readme.md              |  6 ++++++
 roles/native-systemd-email/tasks/main.yml         | 11 +++++++++++
 .../templates/msmtprc.conf.j2                     | 15 +++++++++++++++
 .../templates/systemd-email.service.j2            |  8 ++++++++
 .../templates/systemd-email.sh.j2                 | 11 +++++++++++
 8 files changed, 55 insertions(+), 3 deletions(-)
 create mode 100644 roles/native-systemd-email/readme.md
 create mode 100644 roles/native-systemd-email/tasks/main.yml
 create mode 100644 roles/native-systemd-email/templates/msmtprc.conf.j2
 create mode 100644 roles/native-systemd-email/templates/systemd-email.service.j2
 create mode 100644 roles/native-systemd-email/templates/systemd-email.sh.j2

diff --git a/README.md b/README.md
index de802649..e2ad6325 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,5 @@ ansible-playbook -i ~/your-inventories/inventorie/hosts site.yml
 docker stop $(docker ps -aq); docker rm $(docker ps -aq); docker volume rm $(docker volume ls -q);
 ``
 
-## todo
-- implement smtp
-- implement administrator mail
+## see
+- https://wiki.archlinux.org/index.php/Ansible
diff --git a/roles/native-pull-remote-backups/meta/main.yml b/roles/native-pull-remote-backups/meta/main.yml
index c2902963..c64fb15b 100644
--- a/roles/native-pull-remote-backups/meta/main.yml
+++ b/roles/native-pull-remote-backups/meta/main.yml
@@ -1,2 +1,3 @@
 dependencies:
   - native-git
+  - native-systemd-email
diff --git a/roles/native-pull-remote-backups/templates/pull-remote-backups.service b/roles/native-pull-remote-backups/templates/pull-remote-backups.service
index 32cbf58d..19a96c10 100644
--- a/roles/native-pull-remote-backups/templates/pull-remote-backups.service
+++ b/roles/native-pull-remote-backups/templates/pull-remote-backups.service
@@ -4,3 +4,4 @@ Description=pull remote backups
 [Service]
 Type=oneshot
 ExecStart=/usr/bin/bash /usr/local/bin/pull-remote-backups.sh
+OnFailure=systemd-email@%n.service
diff --git a/roles/native-systemd-email/readme.md b/roles/native-systemd-email/readme.md
new file mode 100644
index 00000000..cf896b6c
--- /dev/null
+++ b/roles/native-systemd-email/readme.md
@@ -0,0 +1,6 @@
+# native-systemd-mail
+
+# see
+- https://wiki.archlinux.org/index.php/Systemd/Timers#MAILTO
+- https://serverfault.com/questions/876233/how-to-send-an-email-if-a-systemd-service-is-restarted/876254
+- https://serverfault.com/questions/694818/get-notification-when-systemd-monitored-service-enters-failed-state
diff --git a/roles/native-systemd-email/tasks/main.yml b/roles/native-systemd-email/tasks/main.yml
new file mode 100644
index 00000000..41fdc426
--- /dev/null
+++ b/roles/native-systemd-email/tasks/main.yml
@@ -0,0 +1,11 @@
+- name: install smtp-forwarder
+  pacman: name=smtp-forwarder state=present
+
+- name: configure msmtprc.conf.j2
+  template: src=msmtprc.conf.j2 dest=/root/.msmtprc
+
+- name: configure systemd-email.sh
+  template: src=systemd-email.sh.j2 dest=/usr/local/bin/systemd-email.sh
+
+- name: configure systemd-email.service
+  template: src=systemd-email.service.j2 dest=/etc/systemd/system/systemd-email.service
diff --git a/roles/native-systemd-email/templates/msmtprc.conf.j2 b/roles/native-systemd-email/templates/msmtprc.conf.j2
new file mode 100644
index 00000000..5d2d7104
--- /dev/null
+++ b/roles/native-systemd-email/templates/msmtprc.conf.j2
@@ -0,0 +1,15 @@
+# Set default values for all following accounts.
+defaults
+auth           on
+tls            on
+tls_trust_file /etc/ssl/certs/ca-certificates.crt
+logfile        ~/.msmtp.log
+
+account        system_email
+host           {{system_email_host}}
+port           587
+from           {{system_email}}
+user           {{system_email_username}}
+password       {{system_email_password}}
+
+account default : system_email
diff --git a/roles/native-systemd-email/templates/systemd-email.service.j2 b/roles/native-systemd-email/templates/systemd-email.service.j2
new file mode 100644
index 00000000..66c5c4a6
--- /dev/null
+++ b/roles/native-systemd-email/templates/systemd-email.service.j2
@@ -0,0 +1,8 @@
+[Unit]
+Description=status email for %i to user
+
+[Service]
+Type=oneshot
+ExecStart=/usr/local/bin/systemd-email.sh %i
+User=nobody
+Group=systemd-journal
diff --git a/roles/native-systemd-email/templates/systemd-email.sh.j2 b/roles/native-systemd-email/templates/systemd-email.sh.j2
new file mode 100644
index 00000000..aa45863f
--- /dev/null
+++ b/roles/native-systemd-email/templates/systemd-email.sh.j2
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+/usr/bin/sendmail -t <<ERRMAIL
+To: {{administrator_email}}
+From: systemd <{{system_email}}>
+Subject: $1
+Content-Transfer-Encoding: 8bit
+Content-Type: text/plain; charset=UTF-8
+
+$(systemctl status --full "$1")
+ERRMAIL