diff --git a/doc/high-availability-guide/api/section_api_pacemaker.xml b/doc/high-availability-guide/api/section_api_pacemaker.xml
index 5196726223..0e1874295e 100644
--- a/doc/high-availability-guide/api/section_api_pacemaker.xml
+++ b/doc/high-availability-guide/api/section_api_pacemaker.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="s-api-pacemaker">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="s-api-pacemaker">
 
           <title>Configure Pacemaker group</title>
 
diff --git a/doc/high-availability-guide/api/section_api_vip.xml b/doc/high-availability-guide/api/section_api_vip.xml
index b077b3d7a7..670966174e 100644
--- a/doc/high-availability-guide/api/section_api_vip.xml
+++ b/doc/high-availability-guide/api/section_api_vip.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="s-api-vip">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="s-api-vip">
 
           <title>Configure the VIP</title>
 
diff --git a/doc/high-availability-guide/api/section_ceilometer_agent_central.xml b/doc/high-availability-guide/api/section_ceilometer_agent_central.xml
index feaee4e3e6..ca9335f099 100644
--- a/doc/high-availability-guide/api/section_ceilometer_agent_central.xml
+++ b/doc/high-availability-guide/api/section_ceilometer_agent_central.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="s-ceilometer-agent-central">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="s-ceilometer-agent-central">
 
           <title>Highly available Telemetry central agent</title>
 
diff --git a/doc/high-availability-guide/api/section_cinder_api.xml b/doc/high-availability-guide/api/section_cinder_api.xml
index 6d47c21a58..78860b8966 100644
--- a/doc/high-availability-guide/api/section_cinder_api.xml
+++ b/doc/high-availability-guide/api/section_cinder_api.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="s-cinder-api">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="s-cinder-api">
 
           <title>Highly available Block Storage API</title>
 
diff --git a/doc/high-availability-guide/api/section_glance_api.xml b/doc/high-availability-guide/api/section_glance_api.xml
index e3ccacc6f6..f0fb6ea503 100644
--- a/doc/high-availability-guide/api/section_glance_api.xml
+++ b/doc/high-availability-guide/api/section_glance_api.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="s-glance-api">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="s-glance-api">
 
           <title>Highly available OpenStack Image API</title>
 
diff --git a/doc/high-availability-guide/api/section_keystone.xml b/doc/high-availability-guide/api/section_keystone.xml
index a1b061930a..0d450dc5e7 100644
--- a/doc/high-availability-guide/api/section_keystone.xml
+++ b/doc/high-availability-guide/api/section_keystone.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="s-keystone">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="s-keystone">
 
           <title>Highly available OpenStack Identity</title>
 
diff --git a/doc/high-availability-guide/api/section_neutron_server.xml b/doc/high-availability-guide/api/section_neutron_server.xml
index 4d718ab0ed..eb4e749b2d 100644
--- a/doc/high-availability-guide/api/section_neutron_server.xml
+++ b/doc/high-availability-guide/api/section_neutron_server.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="s-neutron-server">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="s-neutron-server">
 
           <title>Highly available OpenStack Networking server</title>
 
diff --git a/doc/high-availability-guide/bk-ha-guide.xml b/doc/high-availability-guide/bk-ha-guide.xml
index 66235e98de..d79b8c0e4d 100644
--- a/doc/high-availability-guide/bk-ha-guide.xml
+++ b/doc/high-availability-guide/bk-ha-guide.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<book xml:id="bk-ha-guide"
-      xmlns="http://docbook.org/ns/docbook"
-      xmlns:xlink="http://www.w3.org/1999/xlink"
-      xmlns:xi="http://www.w3.org/2001/XInclude"
-      version="5.0">
+<book xmlns="http://docbook.org/ns/docbook"
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="bk-ha-guide">
 
     <title>OpenStack High Availability Guide</title>
     <info>
diff --git a/doc/high-availability-guide/ch_api.xml b/doc/high-availability-guide/ch_api.xml
index dee1a85aea..6d71b2bce9 100644
--- a/doc/high-availability-guide/ch_api.xml
+++ b/doc/high-availability-guide/ch_api.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ch-api">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ch-api">
 
         <title>API node cluster stack</title>
 
diff --git a/doc/high-availability-guide/ch_controller.xml b/doc/high-availability-guide/ch_controller.xml
index 5c892704c7..96e3754be5 100644
--- a/doc/high-availability-guide/ch_controller.xml
+++ b/doc/high-availability-guide/ch_controller.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
    <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ch-controller">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ch-controller">
 
         <title>Cloud controller cluster stack</title>
 
diff --git a/doc/high-availability-guide/ch_ha_aa_controllers.xml b/doc/high-availability-guide/ch_ha_aa_controllers.xml
index 99e6d93c12..b022b64f12 100644
--- a/doc/high-availability-guide/ch_ha_aa_controllers.xml
+++ b/doc/high-availability-guide/ch_ha_aa_controllers.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
     <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ha-aa-controllers">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ha-aa-controllers">
 
         <title>OpenStack controller nodes</title>
 
diff --git a/doc/high-availability-guide/ch_ha_aa_db.xml b/doc/high-availability-guide/ch_ha_aa_db.xml
index c38812537d..2943fa9720 100644
--- a/doc/high-availability-guide/ch_ha_aa_db.xml
+++ b/doc/high-availability-guide/ch_ha_aa_db.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
     <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ha-aa-db">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ha-aa-db">
 
         <title>Database</title>
 
diff --git a/doc/high-availability-guide/ch_ha_aa_haproxy.xml b/doc/high-availability-guide/ch_ha_aa_haproxy.xml
index 729058f454..8570b034f4 100644
--- a/doc/high-availability-guide/ch_ha_aa_haproxy.xml
+++ b/doc/high-availability-guide/ch_ha_aa_haproxy.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
     <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ha-aa-haproxy">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ha-aa-haproxy">
 
         <title>HAproxy nodes</title>
 
diff --git a/doc/high-availability-guide/ch_ha_aa_network.xml b/doc/high-availability-guide/ch_ha_aa_network.xml
index 2e41bcb4ab..7b5517cf0a 100644
--- a/doc/high-availability-guide/ch_ha_aa_network.xml
+++ b/doc/high-availability-guide/ch_ha_aa_network.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
     <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ha-aa-network">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ha-aa-network">
 
         <title>OpenStack network nodes</title>
 
diff --git a/doc/high-availability-guide/ch_ha_aa_rabbitmq.xml b/doc/high-availability-guide/ch_ha_aa_rabbitmq.xml
index 2f56627eb7..5582a6525b 100644
--- a/doc/high-availability-guide/ch_ha_aa_rabbitmq.xml
+++ b/doc/high-availability-guide/ch_ha_aa_rabbitmq.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
     <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ha-aa-rabbitmq">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ha-aa-rabbitmq">
 
         <title>RabbitMQ</title>
 
diff --git a/doc/high-availability-guide/ch_intro.xml b/doc/high-availability-guide/ch_intro.xml
index 72e09b8bc8..f7938b088e 100644
--- a/doc/high-availability-guide/ch_intro.xml
+++ b/doc/high-availability-guide/ch_intro.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
   <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ch-intro">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ch-intro">
 
       <title>Introduction to OpenStack High Availability</title>
 
diff --git a/doc/high-availability-guide/ch_network.xml b/doc/high-availability-guide/ch_network.xml
index 2a230cd6d5..53a6a09ba9 100644
--- a/doc/high-availability-guide/ch_network.xml
+++ b/doc/high-availability-guide/ch_network.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
    <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ch-network">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ch-network">
 
         <title>Network controller cluster stack</title>
 
diff --git a/doc/high-availability-guide/ch_pacemaker.xml b/doc/high-availability-guide/ch_pacemaker.xml
index 81ef5a8244..7c200e4648 100644
--- a/doc/high-availability-guide/ch_pacemaker.xml
+++ b/doc/high-availability-guide/ch_pacemaker.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
     <chapter xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ch-pacemaker">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ch-pacemaker">
 
         <title>The Pacemaker cluster stack</title>
 
diff --git a/doc/high-availability-guide/controller/section_mysql.xml b/doc/high-availability-guide/controller/section_mysql.xml
index 880279a272..528a4b9c06 100644
--- a/doc/high-availability-guide/controller/section_mysql.xml
+++ b/doc/high-availability-guide/controller/section_mysql.xml
@@ -4,9 +4,10 @@
 %openstack;
 ]>
 <section xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xmlns:xi="http://www.w3.org/2001/XInclude"
-         version="5.0" xml:id="s-mysql">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="s-mysql">
 
           <title>Highly available MySQL</title>
 
diff --git a/doc/high-availability-guide/controller/section_rabbitmq.xml b/doc/high-availability-guide/controller/section_rabbitmq.xml
index cd1562d7bc..748bd09192 100644
--- a/doc/high-availability-guide/controller/section_rabbitmq.xml
+++ b/doc/high-availability-guide/controller/section_rabbitmq.xml
@@ -4,9 +4,10 @@
 %openstack;
 ]>
 <section xmlns="http://docbook.org/ns/docbook"
-         xmlns:xlink="http://www.w3.org/1999/xlink"
-         xmlns:xi="http://www.w3.org/2001/XInclude"
-         version="5.0" xml:id="s-rabbitmq">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="s-rabbitmq">
 
           <title>Highly available RabbitMQ</title>
 
diff --git a/doc/high-availability-guide/ha_aa_controllers/section_memcached.xml b/doc/high-availability-guide/ha_aa_controllers/section_memcached.xml
index 0b0cb185d7..da5f46b6d7 100644
--- a/doc/high-availability-guide/ha_aa_controllers/section_memcached.xml
+++ b/doc/high-availability-guide/ha_aa_controllers/section_memcached.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_memcached">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_memcached">
 
           <title>Memcached</title>
 
diff --git a/doc/high-availability-guide/ha_aa_controllers/section_run_openstack_api_and_schedulers.xml b/doc/high-availability-guide/ha_aa_controllers/section_run_openstack_api_and_schedulers.xml
index 0d90c697d9..0708288bea 100644
--- a/doc/high-availability-guide/ha_aa_controllers/section_run_openstack_api_and_schedulers.xml
+++ b/doc/high-availability-guide/ha_aa_controllers/section_run_openstack_api_and_schedulers.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_run_openstack_api_and_schedulers">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_run_openstack_api_and_schedulers">
 
           <title>Run OpenStack API and schedulers</title>
 
diff --git a/doc/high-availability-guide/ha_aa_db/section_ha_aa_db_galera_monitoring.xml b/doc/high-availability-guide/ha_aa_db/section_ha_aa_db_galera_monitoring.xml
index e749a4359e..d3bb679059 100644
--- a/doc/high-availability-guide/ha_aa_db/section_ha_aa_db_galera_monitoring.xml
+++ b/doc/high-availability-guide/ha_aa_db/section_ha_aa_db_galera_monitoring.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ha-aa-db-galera-monitoring">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ha-aa-db-galera-monitoring">
 
           <title>Galera monitoring scripts</title>
 
diff --git a/doc/high-availability-guide/ha_aa_db/section_ha_aa_db_mysql_galera.xml b/doc/high-availability-guide/ha_aa_db/section_ha_aa_db_mysql_galera.xml
index 768d1959e0..245e3fef50 100644
--- a/doc/high-availability-guide/ha_aa_db/section_ha_aa_db_mysql_galera.xml
+++ b/doc/high-availability-guide/ha_aa_db/section_ha_aa_db_mysql_galera.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ha-aa-db-mysql-galera">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ha-aa-db-mysql-galera">
 
           <title>MySQL with Galera</title>
 
diff --git a/doc/high-availability-guide/ha_aa_db/section_other_ways_to_provide_a_highly_available_database.xml b/doc/high-availability-guide/ha_aa_db/section_other_ways_to_provide_a_highly_available_database.xml
index 9ed177c846..f5eda4853a 100644
--- a/doc/high-availability-guide/ha_aa_db/section_other_ways_to_provide_a_highly_available_database.xml
+++ b/doc/high-availability-guide/ha_aa_db/section_other_ways_to_provide_a_highly_available_database.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_other_ways_to_provide_a_highly_available_database">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_other_ways_to_provide_a_highly_available_database">
 
           <title>Other ways to provide a highly available database</title>
 
diff --git a/doc/high-availability-guide/ha_aa_network/section_run_neutron_dhcp_agent.xml b/doc/high-availability-guide/ha_aa_network/section_run_neutron_dhcp_agent.xml
index b330535027..02cc5f5f58 100644
--- a/doc/high-availability-guide/ha_aa_network/section_run_neutron_dhcp_agent.xml
+++ b/doc/high-availability-guide/ha_aa_network/section_run_neutron_dhcp_agent.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_run_neutron_dhcp_agent">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_run_neutron_dhcp_agent">
 
           <title>Run neutron DHCP agent</title>
 
diff --git a/doc/high-availability-guide/ha_aa_network/section_run_neutron_l3_agent.xml b/doc/high-availability-guide/ha_aa_network/section_run_neutron_l3_agent.xml
index 4780b9d756..ed7fa5b2d8 100644
--- a/doc/high-availability-guide/ha_aa_network/section_run_neutron_l3_agent.xml
+++ b/doc/high-availability-guide/ha_aa_network/section_run_neutron_l3_agent.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_run_neutron_l3_agent">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_run_neutron_l3_agent">
 
           <title>Run neutron L3 agent</title>
 
diff --git a/doc/high-availability-guide/ha_aa_network/section_run_neutron_metadata_agent.xml b/doc/high-availability-guide/ha_aa_network/section_run_neutron_metadata_agent.xml
index 4d3df4abc7..73871db27f 100644
--- a/doc/high-availability-guide/ha_aa_network/section_run_neutron_metadata_agent.xml
+++ b/doc/high-availability-guide/ha_aa_network/section_run_neutron_metadata_agent.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_run_neutron_metadata_agent">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_run_neutron_metadata_agent">
 
           <title>Run neutron metadata agent</title>
 
diff --git a/doc/high-availability-guide/ha_aa_rabbitmq/section_configure_openstack_services_to_user_rabbitmq.xml b/doc/high-availability-guide/ha_aa_rabbitmq/section_configure_openstack_services_to_user_rabbitmq.xml
index 6d2c714010..0da51fc5cd 100644
--- a/doc/high-availability-guide/ha_aa_rabbitmq/section_configure_openstack_services_to_user_rabbitmq.xml
+++ b/doc/high-availability-guide/ha_aa_rabbitmq/section_configure_openstack_services_to_user_rabbitmq.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_configure_openstack_services_to_use_rabbitmq">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_configure_openstack_services_to_use_rabbitmq">
 
           <title>Configure OpenStack services to use RabbitMQ</title>
 
diff --git a/doc/high-availability-guide/ha_aa_rabbitmq/section_configure_rabbitmq.xml b/doc/high-availability-guide/ha_aa_rabbitmq/section_configure_rabbitmq.xml
index 1f0740b947..7f899b049b 100644
--- a/doc/high-availability-guide/ha_aa_rabbitmq/section_configure_rabbitmq.xml
+++ b/doc/high-availability-guide/ha_aa_rabbitmq/section_configure_rabbitmq.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_configure_rabbitmq">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_configure_rabbitmq">
 
           <title>Configure RabbitMQ</title>
 
diff --git a/doc/high-availability-guide/ha_aa_rabbitmq/section_install_rabbitmq.xml b/doc/high-availability-guide/ha_aa_rabbitmq/section_install_rabbitmq.xml
index 0b683ccc11..f8c2556440 100644
--- a/doc/high-availability-guide/ha_aa_rabbitmq/section_install_rabbitmq.xml
+++ b/doc/high-availability-guide/ha_aa_rabbitmq/section_install_rabbitmq.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_install_rabbitmq">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_install_rabbitmq">
 
           <title>Install RabbitMQ</title>
 
diff --git a/doc/high-availability-guide/network/section_highly_available_neutron_dhcp_agent.xml b/doc/high-availability-guide/network/section_highly_available_neutron_dhcp_agent.xml
index a983cfa75a..099b0f9f47 100644
--- a/doc/high-availability-guide/network/section_highly_available_neutron_dhcp_agent.xml
+++ b/doc/high-availability-guide/network/section_highly_available_neutron_dhcp_agent.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_highly_available_neutron_dhcp_agent">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_highly_available_neutron_dhcp_agent">
 
           <title>Highly available neutron DHCP agent</title>
 
diff --git a/doc/high-availability-guide/network/section_highly_available_neutron_l3_agent.xml b/doc/high-availability-guide/network/section_highly_available_neutron_l3_agent.xml
index dd303cffad..23f2ddd035 100644
--- a/doc/high-availability-guide/network/section_highly_available_neutron_l3_agent.xml
+++ b/doc/high-availability-guide/network/section_highly_available_neutron_l3_agent.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_highly_available_neutron_l3_agent">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_highly_available_neutron_l3_agent">
 
           <title>Highly available neutron L3 agent</title>
 
diff --git a/doc/high-availability-guide/network/section_highly_available_neutron_metadata_agent.xml b/doc/high-availability-guide/network/section_highly_available_neutron_metadata_agent.xml
index 677240d24d..84d5ed0672 100644
--- a/doc/high-availability-guide/network/section_highly_available_neutron_metadata_agent.xml
+++ b/doc/high-availability-guide/network/section_highly_available_neutron_metadata_agent.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_highly_available_neutron_metadata_agent">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_highly_available_neutron_metadata_agent">
           <title>Highly available neutron metadata agent</title>
         <para>Neutron metadata agent allows Compute API metadata to be reachable by VMs on tenant
 networks. High availability for the metadata agent is achieved by adopting
diff --git a/doc/high-availability-guide/network/section_manage_network_resources.xml b/doc/high-availability-guide/network/section_manage_network_resources.xml
index 603bdc1828..416d4886b4 100644
--- a/doc/high-availability-guide/network/section_manage_network_resources.xml
+++ b/doc/high-availability-guide/network/section_manage_network_resources.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_manage_network_resources">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_manage_network_resources">
 
           <title>Manage network resources</title>
 
diff --git a/doc/high-availability-guide/pacemaker/section_install_packages.xml b/doc/high-availability-guide/pacemaker/section_install_packages.xml
index f785919355..5c3301bb77 100644
--- a/doc/high-availability-guide/pacemaker/section_install_packages.xml
+++ b/doc/high-availability-guide/pacemaker/section_install_packages.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_install_packages">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_install_packages">
           <title>Install packages</title>
         <para>On any host that is meant to be part of a Pacemaker cluster, you must
 first establish cluster communications through the Corosync messaging
diff --git a/doc/high-availability-guide/pacemaker/section_set_basic_cluster_properties.xml b/doc/high-availability-guide/pacemaker/section_set_basic_cluster_properties.xml
index d8cde4f58b..30a2ee8ce3 100644
--- a/doc/high-availability-guide/pacemaker/section_set_basic_cluster_properties.xml
+++ b/doc/high-availability-guide/pacemaker/section_set_basic_cluster_properties.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_set_basic_cluster_properties">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_set_basic_cluster_properties">
 
           <title>Set basic cluster properties</title>
 
diff --git a/doc/high-availability-guide/pacemaker/section_set_up_corosync.xml b/doc/high-availability-guide/pacemaker/section_set_up_corosync.xml
index b017a41698..ef2805a605 100644
--- a/doc/high-availability-guide/pacemaker/section_set_up_corosync.xml
+++ b/doc/high-availability-guide/pacemaker/section_set_up_corosync.xml
@@ -1,7 +1,8 @@
       <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_set_up_corosync">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_set_up_corosync">
           <title>Set up Corosync</title>
         <para>Besides installing the <literal>corosync</literal> package, you must also
 create a configuration file, stored in
diff --git a/doc/high-availability-guide/pacemaker/section_start_pacemaker.xml b/doc/high-availability-guide/pacemaker/section_start_pacemaker.xml
index f9ee8ee397..c094fbd8d2 100644
--- a/doc/high-availability-guide/pacemaker/section_start_pacemaker.xml
+++ b/doc/high-availability-guide/pacemaker/section_start_pacemaker.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_start_pacemaker">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_start_pacemaker">
           <title>Start Pacemaker</title>
         <para>Once the Corosync services have been started, and you have established
 that the cluster is communicating properly, it is safe to start
diff --git a/doc/high-availability-guide/pacemaker/section_starting_corosync.xml b/doc/high-availability-guide/pacemaker/section_starting_corosync.xml
index 1ef5f9a4d3..962c6a90fa 100644
--- a/doc/high-availability-guide/pacemaker/section_starting_corosync.xml
+++ b/doc/high-availability-guide/pacemaker/section_starting_corosync.xml
@@ -1,7 +1,8 @@
      <section xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="_starting_corosync">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="_starting_corosync">
 
           <title>Starting Corosync</title>
 
diff --git a/doc/high-availability-guide/part_active_active.xml b/doc/high-availability-guide/part_active_active.xml
index 18ba5e32cd..0161ea3001 100644
--- a/doc/high-availability-guide/part_active_active.xml
+++ b/doc/high-availability-guide/part_active_active.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
   <part xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ha-using-active-active">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ha-using-active-active">
 
       <title>HA using active/active</title>
 
diff --git a/doc/high-availability-guide/part_active_passive.xml b/doc/high-availability-guide/part_active_passive.xml
index c24c9d0a2e..dd40dcec2e 100644
--- a/doc/high-availability-guide/part_active_passive.xml
+++ b/doc/high-availability-guide/part_active_passive.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
   <part xmlns="http://docbook.org/ns/docbook"
-    xmlns:xlink="http://www.w3.org/1999/xlink"
-    xmlns:xi="http://www.w3.org/2001/XInclude"
-    version="5.0" xml:id="ha-using-active-passive">
+  xmlns:xi="http://www.w3.org/2001/XInclude"
+  xmlns:xlink="http://www.w3.org/1999/xlink"
+  version="5.0"
+  xml:id="ha-using-active-passive">
 
       <title>HA using active/passive</title>