Configure Bacula File Daemon / Storage Daemon / Director.

Using client-side data signing/encryption and wrapping inter-host
communication into stunnel.

7 files changed, 285 insertions, 0 deletions

diff --git a/roles/common/files/lib/systemd/system/bacula-fd.service b/roles/common/files/lib/systemd/system/bacula-fd.service
new file mode 100644
index 0000000..6e2bbd4
--- /dev/null
+++ b/roles/common/files/lib/systemd/system/bacula-fd.service
@@ -0,0 +1,12 @@
+[Unit]
+Description=Bacula File Daemon service
+After=network.target
+
+[Service]
+Type=forking
+PIDFile=/var/run/bacula/bacula-fd.9112.pid
+StandardOutput=syslog
+ExecStart=/usr/sbin/bacula-fd -c /etc/bacula/bacula-fd.conf
+
+[Install]
+WantedBy=multi-user.target
diff --git a/roles/common/handlers/main.yml b/roles/common/handlers/main.yml
index ddfe86b..b7ecaab 100644
--- a/roles/common/handlers/main.yml
+++ b/roles/common/handlers/main.yml
@@ -2,6 +2,9 @@
 # corresponding state=restarted handler.  (Register the task notifying
 # the handler, and add a conditional.)
 ---
+- name: systemctl daemon-reload
+  command: /bin/systemctl daemon-reload
+
 - name: Refresh hostname
   service: name=hostname.sh state=restarted
 
@@ -35,5 +38,11 @@
 - name: Reload Postfix
   service: name=postfix state=reloaded
 
+- name: Restart stunnel
+  service: name=stunnel4 pattern=/usr/bin/stunnel4 state=restarted
+
+- name: Restart bacula-fd
+  service: name=bacula-fd state=restarted
+
 - name: Update certificate
   command: update-ca-certificates
diff --git a/roles/common/tasks/bacula.yml b/roles/common/tasks/bacula.yml
new file mode 100644
index 0000000..248d47d
--- /dev/null
+++ b/roles/common/tasks/bacula.yml
@@ -0,0 +1,150 @@
+- name: Install stunnel
+  apt: pkg=stunnel4
+
+- name: Auto-enable stunnel
+  lineinfile: dest=/etc/default/stunnel4
+              regexp='^(\s*#)?\s*ENABLED='
+              line='ENABLED=1'
+              owner=root group=root
+              mode=0644
+
+- name: Create /etc/stunnel/certs
+  file: path=/etc/stunnel/certs
+        state=directory
+        owner=root group=root
+        mode=0755
+
+- name: Generate a private key and a X.509 certificate for Bacula FD
+  command: genkeypair.sh x509
+                         --pubkey=/etc/stunnel/certs/{{ inventory_hostname_short }}-fd.pem
+                         --privkey=/etc/stunnel/certs/{{ inventory_hostname_short }}-fd.key
+                         --ou=BaculaFD --cn={{ inventory_hostname }} --dns={{ inventory_hostname }}
+                         -t rsa -b 4096 -h sha512
+  register: r1
+  changed_when: r1.rc == 0
+  failed_when: r1.rc > 1
+  notify:
+    - Restart stunnel
+  tags:
+    - genkey
+
+- name: Fetch Bacula FD X.509 certificate
+  # Ensure we don't fetch private data
+  sudo: False
+  fetch: src=/etc/stunnel/certs/{{ inventory_hostname_short }}-fd.pem
+         dest=certs/bacula/
+         fail_on_missing=yes
+         flat=yes
+  tags:
+    - genkey
+
+- name: Copy Bacula Dir X.509 certificates
+  assemble: src=certs/bacula regexp="-dir\.pem$" remote_src=no
+            dest=/etc/stunnel/certs/bacula-dirs.pem
+            owner=root group=root
+            mode=0644
+  register: r2
+  when: "'bacula-dir' not in group_names"
+  notify:
+    - Restart stunnel
+
+- name: Copy Bacula SD X.509 certificates
+  copy: src=certs/bacula/{{ hostvars[item].inventory_hostname_short }}-sd.pem
+        dest=/etc/stunnel/certs/
+        owner=root group=root
+        mode=0644
+  register: r3
+  with_items: groups['bacula-sd'] | difference([inventory_hostname])
+  notify:
+    - Restart stunnel
+
+- name: Configure stunnel
+  template: src=etc/stunnel/bacula-fd.conf.j2
+            dest=/etc/stunnel/bacula-fd.conf
+            owner=root group=root
+            mode=0644
+  register: r4
+  when: "'bacula-dir' not in group_names or 'bacula-sd' not in group_names"
+  notify:
+    - Restart stunnel
+
+- name: Start stunnel
+  service: name=stunnel4 pattern=/usr/bin/stunnel4 state=started
+  when: not (r1.changed or r2.changed or r3.changed or r4.changed)
+
+- meta: flush_handlers
+
+
+
+- name: Install bacula-fd
+  apt: pkg=bacula-fd
+
+- name: Create /var/lib/bacula/tmp
+  file: path=/var/lib/bacula/tmp
+        state=directory
+        owner=root group=root
+        mode=0700
+
+- name: Delete /etc/bacula/common_default_passwords
+  file: path=/etc/bacula/common_default_passwords state=absent
+
+# Create with:
+#   echo $director-dir $(pwgen -sn 64 1) | sudo tee -a /etc/bacula/passwords-fd
+- name: Ensure /etc/bacula/passwords-fd exists
+  file: path=/etc/bacula/passwords-fd
+        state=file
+        owner=root group=root
+        mode=0600
+
+- name: Configure bacula
+  template: src=etc/bacula/bacula-fd.conf.j2
+            dest=/etc/bacula/bacula-fd.conf
+            owner=root group=root
+            mode=0644
+  notify:
+    - Restart bacula-fd
+
+- name: Create /etc/bacula/ssl
+  file: path=/etc/bacula/ssl
+        state=directory
+        owner=root group=root
+        mode=0755
+
+- name: Generate a keypair for data encryption
+  command: genkeypair.sh x509
+                         --pubkey=/etc/bacula/ssl/{{ inventory_hostname_short }}.pem
+                         --privkey=/etc/bacula/ssl/{{ inventory_hostname_short }}.pem
+                         --ou=BaculaFD --cn={{ inventory_hostname }} --dns={{ inventory_hostname }}
+                         -t rsa -b 4096 -h sha512
+  register: r
+  changed_when: r.rc == 0
+  failed_when: r.rc > 1
+  notify:
+    - Restart bacula-fd
+  tags:
+    - genkey
+
+- name: Copy the master public key for data encryption
+  copy: src=certs/bacula/data-master.pem
+        dest=/etc/bacula/ssl/master.pem
+        owner=root group=root
+        mode=0644
+  tags:
+    - genkey
+
+- name: Copy bacula-fd.service
+  copy: src=lib/systemd/system/bacula-fd.service
+        dest=/lib/systemd/system/bacula-fd.service
+        owner=root group=root
+        mode=0644
+  notify:
+    - systemctl daemon-reload
+    - Restart bacula-fd
+
+- meta: flush_handlers
+
+- name: Enable bacula-fd
+  service: name=bacula-fd enabled=yes
+
+- name: Start bacula-fd
+  service: name=bacula-fd state=started
diff --git a/roles/common/tasks/main.yml b/roles/common/tasks/main.yml
index 8f28b93..477bd34 100644
--- a/roles/common/tasks/main.yml
+++ b/roles/common/tasks/main.yml
@@ -30,6 +30,7 @@
 - include: logging.yml  tags=logging
 - include: ntp.yml      tags=ntp
 - include: mail.yml     tags=mail,postfix
+- include: bacula.yml   tags=bacula-fd,bacula
 
 - name: Install common packages
   apt: pkg={{ item }}
diff --git a/roles/common/templates/etc/bacula/bacula-fd.conf.j2 b/roles/common/templates/etc/bacula/bacula-fd.conf.j2
new file mode 100644
index 0000000..a47bb90
--- /dev/null
+++ b/roles/common/templates/etc/bacula/bacula-fd.conf.j2
@@ -0,0 +1,41 @@
+#
+# Default  Bacula File Daemon Configuration file
+#
+#  For Bacula release 5.2.6 (21 February 2012) -- debian jessie/sid
+
+#
+# List Directors who are permitted to contact this File daemon
+#
+{% for dir in groups['bacula-dir'] | sort %}
+Director {
+  Name = {{ hostvars[dir].inventory_hostname_short }}-dir
+  @|"sed -n '/^{{ hostvars[dir].inventory_hostname_short }}-dir\\s/ {s//Password = /p; q}' /etc/bacula/passwords-fd"
+}
+
+# Send all messages except skipped files back to Director
+Messages {
+  Name = Standard
+  director = {{ hostvars[dir].inventory_hostname_short }}-dir = all, !skipped, !restored
+}
+{% endfor %}
+
+#
+# "Global" File daemon configuration specifications
+#
+FileDaemon {  # define myself
+  Name = {{ inventory_hostname_short }}-fd
+  Working Directory = /var/lib/bacula
+  Pid Directory = /var/run/bacula
+  Maximum Concurrent Jobs = 20
+  FDAddress = 127.0.0.1
+  FDPort = 9112
+  FDSourceAddress = 127.0.0.1
+{% if 'bacula-dir' not in group_names or 'bacula-sd' not in group_names %}
+  Heartbeat Interval = 60s
+{% endif %}
+
+  PKI Signatures = Yes  # Enable Data Signing
+  PKI Encryption = Yes  # Enable Data Encryption
+  PKI Keypair = /etc/bacula/ssl/{{ inventory_hostname_short }}.pem # Public and Private Keys
+  PKI Master Key = /etc/bacula/ssl/master.pem                      # ONLY the Public Key
+}
diff --git a/roles/common/templates/etc/iptables/services.j2 b/roles/common/templates/etc/iptables/services.j2
index 187e588..a0bb714 100644
--- a/roles/common/templates/etc/iptables/services.j2
+++ b/roles/common/templates/etc/iptables/services.j2
@@ -59,6 +59,16 @@ in      tcp     80,443                                  # HTTP/HTTPS
 out     tcp     993                                     # IMAP
 out     tcp     4190                                    # MANAGESIEVE
 {% endif %}
+{% if 'bacula-dir' in group_names and groups.all | difference(groups['bacula-dir']) %}
+out     tcp     9102                                    # BACULA-FD
+{% elif groups['bacula-dir'] | difference([inventory_hostname]) %}
+in      tcp     9102                                    # BACULA-FD
+{% endif %}
+{% if 'bacula-sd' in group_names and groups.all | difference(groups['bacula-sd']) %}
+in      tcp     9103                                    # BACULA-SD
+{% elif groups['bacula-sd'] | difference([inventory_hostname]) %}
+out     tcp     9103                                    # BACULA-SD
+{% endif %}
 
 {% if 'LDAP-provider' in group_names %}
 out     tcp     11371                                   # HKP
diff --git a/roles/common/templates/etc/stunnel/bacula-fd.conf.j2 b/roles/common/templates/etc/stunnel/bacula-fd.conf.j2
new file mode 100644
index 0000000..74364c9
--- /dev/null
+++ b/roles/common/templates/etc/stunnel/bacula-fd.conf.j2
@@ -0,0 +1,62 @@
+; **************************************************************************
+; * Global options                                                         *
+; **************************************************************************
+
+; setuid()/setgid() to the specified user/group in daemon mode
+setuid = stunnel4
+setgid = stunnel4
+
+; PID is created inside the chroot jail
+pid = /var/run/stunnel4/bacula-fd.pid
+
+; Only log messages at severity warning (4) and higher
+debug = 4
+
+; **************************************************************************
+; * Service defaults may also be specified in individual service sections  *
+; **************************************************************************
+
+; Certificate/key is needed in server mode and optional in client mode
+cert = /etc/stunnel/certs/{{ inventory_hostname_short }}-fd.pem
+key  = /etc/stunnel/certs/{{ inventory_hostname_short }}-fd.key
+
+; Some performance tunings
+socket = l:TCP_NODELAY=1
+socket = r:TCP_NODELAY=1
+
+; Prevent MITM attacks
+verify = 4
+
+; Disable support for insecure protocols
+options = NO_SSLv2
+options = NO_SSLv3
+options = NO_TLSv1
+options = NO_TLSv1.1
+
+; These options provide additional security at some performance degradation
+options = SINGLE_ECDH_USE
+options = SINGLE_DH_USE
+
+; Select permitted SSL ciphers
+ciphers = EECDH+AES:EDH+AES:!MEDIUM:!LOW:!EXP:!aNULL:!eNULL:!SSLv2:!SSLv3:!TLSv1:!TLSv1.1
+
+; **************************************************************************
+; * Service definitions (remove all services for inetd mode)               *
+; **************************************************************************
+
+[{{ inventory_hostname_short }}-fd]
+client  = no
+accept  = 9102
+connect = 9112
+CAfile  = /etc/stunnel/certs/bacula-dirs.pem
+
+{% if 'bacula-sd' not in group_names %}
+[{{ hostvars[ groups['bacula-sd'][0] ].inventory_hostname_short }}-sd]
+client  = yes
+accept  = 127.0.0.1:9113
+connect = {{ groups['bacula-sd'][0] }}:9103
+delay   = yes
+CAfile  = /etc/stunnel/certs/{{ hostvars[ groups['bacula-sd'][0] ].inventory_hostname_short }}-sd.pem
+{% endif %}
+
+; vim:ft=dosini