undefined method `host' for #<Gitlab::Database::LoadBalancing::PrimaryHost:0x00007fa347fac4a8>
https://sentry.gitlab.net/gitlab/staginggitlabcom/issues/2811880/?query=is%3Aunresolved%20NoMethodError
NoMethodError: undefined method `host' for #<Gitlab::Database::LoadBalancing::PrimaryHost:0x00007f49d8f6c6f0>
from lib/gitlab/database/load_balancing/host_list.rb:33:in `block (2 levels) in host_names_and_ports'
from lib/gitlab/database/load_balancing/host_list.rb:33:in `map'
from lib/gitlab/database/load_balancing/host_list.rb:33:in `block in host_names_and_ports'
from lib/gitlab/database/load_balancing/host_list.rb:33:in `synchronize'
from lib/gitlab/database/load_balancing/host_list.rb:33:in `host_names_and_ports'
from lib/gitlab/database/load_balancing/service_discovery.rb:189:in `addresses_from_load_balancer'
from lib/gitlab/database/load_balancing/service_discovery.rb:114:in `refresh_if_necessary'
from lib/gitlab/database/load_balancing/service_discovery.rb:86:in `block in perform_service_discovery'
from lib/gitlab/database/load_balancing/service_discovery.rb:85:in `times'
from lib/gitlab/database/load_balancing/service_discovery.rb:85:in `perform_service_discovery'
from lib/gitlab/database/load_balancing/service_discovery.rb:74:in `block (2 levels) in start'
from lib/gitlab/database/load_balancing/service_discovery.rb:73:in `loop'
from lib/gitlab/database/load_balancing/service_discovery.rb:73:in `block in start'