There was a problem connecting to the databases. Here's the wpdb object:
hyperdb Object
(
[last_table] => wp_options
[last_found_rows_result] =>
[save_queries] =>
[dbh] =>
[dbhs] => Array
(
[global__r] =>
)
[hyper_servers] => Array
(
[global] => Array
(
[read] => Array
(
[1] => Array
(
[0] => Array
(
[host] =>
[user] =>
[password] =>
[name] =>
)
)
)
[write] => Array
(
[1] => Array
(
[0] => Array
(
[host] =>
[user] =>
[password] =>
[name] =>
)
)
)
)
)
[hyper_tables] => Array
(
)
[hyper_callbacks] => Array
(
[db_connection_error] => Array
(
[0] => wpdb_connection_error
)
)
[save_query_callback] =>
[persistent] =>
[max_connections] => 10
[check_tcp_responsiveness] => 1
[min_tries] => 3
[srtm] => Array
(
)
[db_connections] => Array
(
[0] => Array
(
[dbhname] => global__r
[host] =>
[port] => 3306
[user] =>
[name] =>
[elapsed] => 0.00010800361633301
[success] =>
)
[1] => Array
(
[dbhname] => global__r
[host] =>
[port] => 3306
[user] =>
[name] =>
[elapsed] => 9.4175338745117E-5
[success] =>
)
[2] => Array
(
[dbhname] => global__r
[host] =>
[port] => 3306
[user] =>
[name] =>
[elapsed] => 0.00013422966003418
[success] =>
)
)
[open_connections] => Array
(
)
[last_used_server] =>
[used_servers] => Array
(
)
[save_backtrace] => 1
[default_lag_threshold] =>
[dbh2host] => Array
(
)
[dbhname_heartbeats] => Array
(
)
[is_mysql] => 1
[show_errors] =>
[suppress_errors] =>
[last_error] =>
[num_queries] => 0
[num_rows] => 0
[rows_affected] => 0
[insert_id] => 0
[last_query] => SELECT option_value FROM wp_options WHERE option_name = 'wpseo_redirect'
[last_result] => Array
(
)
[result:protected] =>
[col_meta:protected] => Array
(
)
[table_charset:protected] => Array
(
)
[check_current_query:protected] =>
[checking_collation:wpdb:private] =>
[col_info:protected] =>
[queries] =>
[reconnect_retries:protected] => 5
[prefix] => wp_
[base_prefix] => wp_
[ready] =>
[blogid] => 0
[siteid] => 0
[tables] => Array
(
[0] => posts
[1] => comments
[2] => links
[3] => options
[4] => postmeta
[5] => terms
[6] => term_taxonomy
[7] => term_relationships
[8] => termmeta
[9] => commentmeta
)
[old_tables] => Array
(
[0] => categories
[1] => post2cat
[2] => link2cat
)
[global_tables] => Array
(
[0] => users
[1] => usermeta
)
[ms_global_tables] => Array
(
[0] => blogs
[1] => signups
[2] => site
[3] => sitemeta
[4] => sitecategories
[5] => registration_log
[6] => blog_versions
)
[comments] => wp_comments
[commentmeta] => wp_commentmeta
[links] => wp_links
[options] => wp_options
[postmeta] => wp_postmeta
[posts] => wp_posts
[terms] => wp_terms
[term_relationships] => wp_term_relationships
[term_taxonomy] => wp_term_taxonomy
[termmeta] => wp_termmeta
[usermeta] => wp_usermeta
[users] => wp_users
[blogs] =>
[blog_versions] =>
[registration_log] =>
[signups] =>
[site] =>
[sitecategories] =>
[sitemeta] =>
[field_types] => Array
(
[post_author] => %d
[post_parent] => %d
[menu_order] => %d
[term_id] => %d
[term_group] => %d
[term_taxonomy_id] => %d
[parent] => %d
[count] => %d
[object_id] => %d
[term_order] => %d
[ID] => %d
[comment_ID] => %d
[comment_post_ID] => %d
[comment_parent] => %d
[user_id] => %d
[link_id] => %d
[link_owner] => %d
[link_rating] => %d
[option_id] => %d
[blog_id] => %d
[meta_id] => %d
[post_id] => %d
[user_status] => %d
[umeta_id] => %d
[comment_karma] => %d
[comment_count] => %d
[active] => %d
[cat_id] => %d
[deleted] => %d
[lang_id] => %d
[mature] => %d
[public] => %d
[site_id] => %d
[spam] => %d
)
[charset] =>
[collate] =>
[dbuser:protected] =>
[dbpassword:protected] =>
[dbname:protected] =>
[dbhost:protected] =>
[func_call] => $db->query("SELECT option_value FROM wp_options WHERE option_name = 'wpseo_redirect'")
[incompatible_modes:protected] => Array
(
[0] => NO_ZERO_DATE
[1] => ONLY_FULL_GROUP_BY
[2] => STRICT_TRANS_TABLES
[3] => STRICT_ALL_TABLES
[4] => TRADITIONAL
)
[use_mysqli:wpdb:private] => 1
[has_connected:wpdb:private] =>
[categories] => wp_categories
[post2cat] => wp_post2cat
[link2cat] => wp_link2cat
[table] => wp_options
[callback_result] =>
[dataset] => global
[dbhname] => global__r
[lag_cache_key] => :3306
[lag_threshold] =>
[time_start] => 1516664805.719
[last_connection] => Array
(
[dbhname] => global__r
[host] =>
[port] => 3306
[user] =>
[name] =>
[elapsed] => 0.00013422966003418
[success] =>
)
)
Here is the SERVER (ENV) variable for DB_REPLICAS:
And here is the DB_REPLICAS constant:
DB_REPLICAS