Update patroni documenation with api auth configuration

doc/administration/geo/setup/database.md

@@ -487,7 +487,7 @@ The replication process is now complete.
 PostgreSQL connections, which can improve performance even when using in a
 single instance installation.
 
-We recommend using PgBouncer if you use GitLab in a highly available  
+We recommend using PgBouncer if you use GitLab in a highly available
 configuration with a cluster of nodes supporting a Geo **primary** site and
 two other clusters of nodes supporting a Geo **secondary** site. One for the
 main database and the other for the tracking database. For more information,
@@ -550,12 +550,12 @@ Leader instance**:
 
    ```ruby
    roles(['patroni_role'])
-   
+
    consul['services'] = %w(postgresql)
    consul['configuration'] = {
      retry_join: %w[CONSUL_PRIMARY1_IP CONSUL_PRIMARY2_IP CONSUL_PRIMARY3_IP]
    }
-   
+
    # You need one entry for each secondary, with a unique name following PostgreSQL slot_name constraints:
    #
    # Configuration syntax is: 'unique_slotname' => { 'type' => 'physical' },
@@ -567,6 +567,8 @@ Leader instance**:
    patroni['use_pg_rewind'] = true
    patroni['postgresql']['max_wal_senders'] = 8 # Use double of the amount of patroni/reserved slots (3 patronis + 1 reserved slot for a Geo secondary).
    patroni['postgresql']['max_replication_slots'] = 8 # Use double of the amount of patroni/reserved slots (3 patronis + 1 reserved slot for a Geo secondary).
+   patroni['username'] = 'PATRONI_API_USERNAME'
+   patroni['password'] = 'PATRONI_API_PASSWORD'
    patroni['replication_password'] = 'PLAIN_TEXT_POSTGRESQL_REPLICATION_PASSWORD'
 
    # We list all secondary instances as they can all become a Standby Leader
@@ -727,16 +729,18 @@ For each Patroni instance on the secondary site:
    patroni['standby_cluster']['host'] = 'INTERNAL_LOAD_BALANCER_PRIMARY_IP'
    patroni['standby_cluster']['port'] = INTERNAL_LOAD_BALANCER_PRIMARY_PORT
    patroni['standby_cluster']['primary_slot_name'] = 'geo_secondary' # Or the unique replication slot name you setup before
+   patroni['username'] = 'PATRONI_API_USERNAME'
+   patroni['password'] = 'PATRONI_API_PASSWORD'
    patroni['replication_password'] = 'PLAIN_TEXT_POSTGRESQL_REPLICATION_PASSWORD'
    patroni['use_pg_rewind'] = true
    patroni['postgresql']['max_wal_senders'] = 5 # A minimum of three for one replica, plus two for each additional replica
    patroni['postgresql']['max_replication_slots'] = 5 # A minimum of three for one replica, plus two for each additional replica
-   
+
    postgresql['pgbouncer_user_password'] = 'PGBOUNCER_PASSWORD_HASH'
    postgresql['sql_replication_password'] = 'POSTGRESQL_REPLICATION_PASSWORD_HASH'
    postgresql['sql_user_password'] = 'POSTGRESQL_PASSWORD_HASH'
    postgresql['listen_address'] = '0.0.0.0' # You can use a public or VPC address here instead
-   
+
    gitlab_rails['dbpassword'] = 'POSTGRESQL_PASSWORD'
    gitlab_rails['enable'] = true
    gitlab_rails['auto_migrate'] = false
@@ -754,7 +758,7 @@ For each Patroni instance on the secondary site:
    - If you are configuring a Patroni standby cluster on a site that previously had a working Patroni cluster:
 
      ```shell
-     gitlab-ctl stop patroni 
+     gitlab-ctl stop patroni
      rm -rf /var/opt/gitlab/postgresql/data
      /opt/gitlab/embedded/bin/patronictl -c /var/opt/gitlab/patroni/patroni.yaml remove postgresql-ha
      gitlab-ctl reconfigure
@@ -900,6 +904,8 @@ For each Patroni instance on the secondary site for the tracking database:
    ]
 
    # Patroni configuration
+   patroni['username'] = 'PATRONI_API_USERNAME'
+   patroni['password'] = 'PATRONI_API_PASSWORD'
    patroni['replication_password'] = 'PLAIN_TEXT_POSTGRESQL_REPLICATION_PASSWORD'
    patroni['postgresql']['max_wal_senders'] = 5 # A minimum of three for one replica, plus two for each additional replica
 

doc/administration/postgresql/replication_and_failover.md

@@ -157,6 +157,13 @@ We will need the following password information for the application's database u
   sudo gitlab-ctl pg-password-md5 POSTGRESQL_USERNAME
   ```
 
+#### Patroni information
+
+We will need the following password information for the Patroni API:
+
+- `PATRONI_API_USERNAME`. A username for basic auth to the API
+- `PATRONI_API_PASSWORD`. A password for basic auth to the API
+
 #### PgBouncer information
 
 When using default setup, minimum configuration requires:
@@ -236,6 +243,11 @@ postgresql['sql_replication_password'] = 'POSTGRESQL_REPLICATION_PASSWORD_HASH'
 # Replace POSTGRESQL_PASSWORD_HASH with a generated md5 value
 postgresql['sql_user_password'] = 'POSTGRESQL_PASSWORD_HASH'
 
+# Replace PATRONI_API_USERNAME with a username for Patroni Rest API calls (use the same username in all nodes)
+patroni['username'] = 'PATRONI_API_USERNAME'
+# Replace PATRONI_API_PASSWORD with a password for Patroni Rest API calls (use the same password in all nodes)
+patroni['password'] = 'PATRONI_API_PASSWORD'
+
 # Sets `max_replication_slots` to double the number of database nodes.
 # Patroni uses one extra slot per node when initiating the replication.
 patroni['postgresql']['max_replication_slots'] = X
@@ -555,6 +567,8 @@ gitlab_rails['auto_migrate'] = false
 
 postgresql['pgbouncer_user_password'] = '771a8625958a529132abe6f1a4acb19c'
 postgresql['sql_user_password'] = '450409b85a0223a214b5fb1484f34d0f'
+patroni['username'] = 'PATRONI_API_USERNAME'
+patroni['password'] = 'PATRONI_API_PASSWORD'
 patroni['postgresql']['max_replication_slots'] = 6
 patroni['postgresql']['max_wal_senders'] = 7
 
@@ -642,6 +656,9 @@ postgresql['sql_user_password'] = '450409b85a0223a214b5fb1484f34d0f'
 # Patroni uses one extra slot per node when initiating the replication.
 patroni['postgresql']['max_replication_slots'] = 6
 
+patroni['username'] = 'PATRONI_API_USERNAME'
+patroni['password'] = 'PATRONI_API_PASSWORD'
+
 # Set `max_wal_senders` to one more than the number of replication slots in the cluster.
 # This is used to prevent replication from using up all of the
 # available database connections.

doc/administration/reference_architectures/10k_users.md

@@ -598,6 +598,10 @@ in the second step, do not supply the `EXTERNAL_URL` value.
    # Replace POSTGRESQL_PASSWORD_HASH with a generated md5 value
    postgresql['sql_user_password'] = '<postgresql_password_hash>'
 
+   # Set up basic authentication for the Patroni API (use the same username/password in all nodes).
+   patroni['username'] = '<patroni_api_username>'
+   patroni['password'] = '<patroni_api_password>'
+
    # Replace XXX.XXX.XXX.XXX/YY with Network Address
    postgresql['trust_auth_cidr_addresses'] = %w(10.6.0.0/24)
 
@@ -1681,7 +1685,7 @@ On each node:
    # balancer.
    gitlab_rails['internal_api_url'] = 'https://gitlab.example.com'
 
-   # Gitaly 
+   # Gitaly
    gitaly['enable'] = true
 
    # Make Gitaly accept connections on all network interfaces. You must use

doc/administration/reference_architectures/25k_users.md

@@ -600,6 +600,10 @@ in the second step, do not supply the `EXTERNAL_URL` value.
    # Replace POSTGRESQL_PASSWORD_HASH with a generated md5 value
    postgresql['sql_user_password'] = '<postgresql_password_hash>'
 
+   # Set up basic authentication for the Patroni API (use the same username/password in all nodes).
+   patroni['username'] = '<patroni_api_username>'
+   patroni['password'] = '<patroni_api_password>'
+
    # Replace XXX.XXX.XXX.XXX/YY with Network Address
    postgresql['trust_auth_cidr_addresses'] = %w(10.6.0.0/24)
 
@@ -863,7 +867,7 @@ a node and change its status from primary to replica (and vice versa).
    redis_exporter['flags'] = {
         'redis.addr' => 'redis://10.6.0.51:6379',
         'redis.password' => 'redis-password-goes-here',
-   }   
+   }
 
    # Prevent database migrations from running on upgrade automatically
    gitlab_rails['auto_migrate'] = false
@@ -1699,7 +1703,7 @@ On each node:
    # balancer.
    gitlab_rails['internal_api_url'] = 'https://gitlab.example.com'
 
-   # Gitaly 
+   # Gitaly
    gitaly['enable'] = true
 
    # Make Gitaly accept connections on all network interfaces. You must use

doc/administration/reference_architectures/3k_users.md

@@ -848,7 +848,7 @@ in the second step, do not supply the `EXTERNAL_URL` value.
    ```ruby
    # Disable all components except Patroni and Consul
    roles(['patroni_role'])
-   
+
    # PostgreSQL configuration
    postgresql['listen_address'] = '0.0.0.0'
 
@@ -866,7 +866,7 @@ in the second step, do not supply the `EXTERNAL_URL` value.
 
    # Prevent database migrations from running on upgrade automatically
    gitlab_rails['auto_migrate'] = false
-   
+
    # Configure the Consul agent
    consul['services'] = %w(postgresql)
    ## Enable service discovery for Prometheus
@@ -882,6 +882,10 @@ in the second step, do not supply the `EXTERNAL_URL` value.
    # Replace POSTGRESQL_PASSWORD_HASH with a generated md5 value
    postgresql['sql_user_password'] = '<postgresql_password_hash>'
 
+   # Set up basic authentication for the Patroni API (use the same username/password in all nodes).
+   patroni['username'] = '<patroni_api_username>'
+   patroni['password'] = '<patroni_api_password>'
+
    # Replace XXX.XXX.XXX.XXX/YY with Network Address
    postgresql['trust_auth_cidr_addresses'] = %w(10.6.0.0/24)
 

doc/administration/reference_architectures/50k_users.md

@@ -608,6 +608,10 @@ in the second step, do not supply the `EXTERNAL_URL` value.
    # Replace POSTGRESQL_PASSWORD_HASH with a generated md5 value
    postgresql['sql_user_password'] = '<postgresql_password_hash>'
 
+   # Set up basic authentication for the Patroni API (use the same username/password in all nodes).
+   patroni['username'] = '<patroni_api_username>'
+   patroni['password'] = '<patroni_api_password>'
+
    # Replace XXX.XXX.XXX.XXX/YY with Network Address
    postgresql['trust_auth_cidr_addresses'] = %w(10.6.0.0/24)
 
@@ -872,7 +876,7 @@ a node and change its status from primary to replica (and vice versa).
         'redis.addr' => 'redis://10.6.0.51:6379',
         'redis.password' => 'redis-password-goes-here',
    }
-   
+
    # Prevent database migrations from running on upgrade automatically
    gitlab_rails['auto_migrate'] = false
    ```
@@ -1703,7 +1707,7 @@ On each node:
    # balancer.
    gitlab_rails['internal_api_url'] = 'https://gitlab.example.com'
 
-   # Gitaly 
+   # Gitaly
    gitaly['enable'] = true
 
    # Make Gitaly accept connections on all network interfaces. You must use
@@ -1929,7 +1933,7 @@ To configure the Sidekiq nodes, on each one:
    ## Set number of Sidekiq threads per queue process to the recommend number of 10
    sidekiq['max_concurrency'] = 10
 
-   # Monitoring 
+   # Monitoring
    consul['enable'] = true
    consul['monitoring_service_discovery'] =  true
 

doc/administration/reference_architectures/5k_users.md

@@ -846,7 +846,7 @@ in the second step, do not supply the `EXTERNAL_URL` value.
    # Sets `max_replication_slots` to double the number of database nodes.
    # Patroni uses one extra slot per node when initiating the replication.
    patroni['postgresql']['max_replication_slots'] = 8
-   
+
    # Set `max_wal_senders` to one more than the number of replication slots in the cluster.
    # This is used to prevent replication from using up all of the
    # available database connections.
@@ -873,6 +873,10 @@ in the second step, do not supply the `EXTERNAL_URL` value.
    # Replace POSTGRESQL_PASSWORD_HASH with a generated md5 value
    postgresql['sql_user_password'] = '<postgresql_password_hash>'
 
+   # Set up basic authentication for the Patroni API (use the same username/password in all nodes).
+   patroni['username'] = '<patroni_api_username>'
+   patroni['password'] = '<patroni_api_password>'
+
    # Replace XXX.XXX.XXX.XXX/YY with Network Address
    postgresql['trust_auth_cidr_addresses'] = %w(10.6.0.0/24)