Add missing files

site-cookbooks/kosmos_postgresql/recipes/replica.rb

@@ -0,0 +1,56 @@
+#
+# Cookbook:: kosmos_postgresql
+# Recipe:: replica
+#
+
+postgresql_version = "12"
+postgresql_service = "postgresql@#{postgresql_version}-main"
+
+postgresql_custom_server postgresql_version do
+  role "replica"
+end
+
+service postgresql_service do
+  supports restart: true, status: true, reload: true
+end
+
+postgresql_data_bag_item = data_bag_item('credentials', 'postgresql')
+
+primary = postgresql_primary
+
+unless primary.nil?
+  # TODO
+  postgresql_data_dir = "/var/lib/postgresql/#{postgresql_version}/main"
+
+  # FIXME get zerotier IP
+  execute "set up replication" do
+    command <<-EOF
+systemctl stop #{postgresql_service}
+mv #{postgresql_data_dir} #{postgresql_data_dir}.old
+pg_basebackup -h pg.kosmos.local -U replication -D #{postgresql_data_dir} -R
+chown -R postgres:postgres #{postgresql_data_dir}
+systemctl start #{postgresql_service}
+    EOF
+    environment 'PGPASSWORD' => postgresql_data_bag_item['replication_password']
+    sensitive true
+    not_if { ::File.exist? "#{postgresql_data_dir}/standby.signal" }
+  end
+
+  postgresql_access "zerotier members" do
+    access_type "host"
+    access_db "all"
+    access_user "all"
+    access_addr "10.1.1.0/24"
+    access_method "md5"
+    notifies :reload, "service[#{postgresql_service}]", :immediately
+  end
+
+  postgresql_access "zerotier members replication" do
+    access_type "host"
+    access_db "replication"
+    access_user "replication"
+    access_addr "10.1.1.0/24"
+    access_method "md5"
+    notifies :reload, "service[#{postgresql_service}]", :immediately
+  end
+end