Arrange for services to restart on cert renewal

roles/common/DESIGN.md

 
 Certificates and private keys are backed up using tarsnap.
 
-Certificate renewal is done automatically using cron. The cron script must be aware of private key copies and update them as well. Services that depend on new keys must also be bounced. It is up to roles that rely on keys to modify the cron script (preferably using `linein` or similar games) to accomplish this.
+Certificate renewal is done automatically using cron. The cron script must be aware of private key copies and update them as well. Services that depend on new keys must also be bounced. It is up to roles that rely on keys to modify the cron script (preferably using `lineinfile` or something similar) to accomplish this.
 
 ### Alternative approaches
 

roles/common/files/etc_cron-monthly_letsencrypt-renew

   /root/letsencrypt/letsencrypt-auto --renew certonly -c /etc/letsencrypt/cli.conf --domains=$domains
 done
 service apache2 start
+
+# Services that rely on LE certificates will need restarted.  In some cases
+# their certificates are based on copies of the LE certs and will need
+# regenerated as well.
+

roles/ircbouncer/tasks/znc.yml

     creates=/usr/lib/znc/znc.pem
   notify: restart znc
 
+- name: Update certificate renwal cron job
+  lineinfile: dest=/etc/cron.monthly/letsencrypt-renew state=present
+    line="cat /etc/letsencrypt/live/{{ domain }}/{privkey,fullchain}.pem > /var/lib/znc/znc.pem; chown znc.znc /var/lib/znc/znc.pem; chmod 640 /var/lib/znc/znc.pem; service znc restart"
+    insertafter="EOF"
+
 - name: Ensure znc user and group can read cert
   file: path=/usr/lib/znc/znc.pem group=znc owner=znc mode=640
   notify: restart znc

roles/mailserver/tasks/dovecot.yml

     - imaps
     - pop3s
   tags: ufw
+
+- name: Update certificate renwal cron job
+  lineinfile: dest=/etc/cron.monthly/letsencrypt-renew state=present
+    line="service dovecot restart"
+    insertafter="EOF"

roles/xmpp/tasks/prosody.yml

     - privkey.pem
     - cert.pem
 
+- name: Update certificate renewal cron job
+  lineinfile: dest=/etc/cron.monthly/letsencrypt-renew state=present
+    line="cp /etc/letsencrypt/live/{{ domain }}/{privkey,cert}.pem /etc/prosody/certs; chown root.prosody /etc/prosody/certs/{privkey,cert}.pem; chmod 640 /etc/prosody/certs/{privkey,cert}.pem; service prosody restart"
+    insertafter="EOF"
+
 - name: Create Prosody accounts
   command: prosodyctl register {{ item.name }} {{ prosody_virtual_domain }} "{{ item.password }}"
   with_items: prosody_accounts