yahoo-eng-team team mailing list archive

[Matt Riedemann <mriedem@xxxxxxxxxx>]

This isn't a nova issue, you're maxing out your environment. What size
is the deployment? What is the topology? How much resource is reserved
to each control node, especially the one running the database and nova-
conductor service? I'm pretty sure ulimit in most openstack deployments
is at least 64K. How is mysql configured? etc etc

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1645106

Title:
  DBAPIError exception (Out of resources when opening file)

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  ## What we did:

  During retrieving the list of instances we observed the following:

  #nova list
  ERROR (ClientException): Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
  <class 'oslo_db.exception.DBError'> (HTTP 500) (Request-ID: req-451274ad-209b-48dd-a592-363c73a678f9)

  In dasboard we got a similar message:

  'Unable to retrieve instance list'

  ## Current Result:

  A DBAPIError exception was appeared in nova-api logs which was
  indicating that resources were exceeded when trying to open a specific
  file.

  'Out of resources when opening file '/tmp/#sql_1bf9_0.MAD' (Errcode:
  24)") [SQL: u'SELECT anon_1.instances_created_at AS
  anon_1_instances_created_at'

  
  # cat /var/log/nova/nova-api.log | grep -i 451274ad-209b-48dd-a592-363c73a678f9

  2016-11-27 07:06:32.391 27622 ERROR oslo_db.sqlalchemy.exc_filters [req-451274ad-209b-48dd-a592-363c73a678f9 d4eb954193b749e792dcdf352bace825 2204caa77724423e820c36db45439124 - - -] DBAPIError exception wrapped from (pymysql.err.InternalError) (23, u"Out of resources when opening file '/tmp/#sql_1bf9_0.MAD' (Errcode: 24)") [SQL: u'SELECT anon_1.instances_created_at AS anon_1_instances_created_at, anon_1.instances_updated_at AS anon_1_instances_updated_at, anon_1.instances_deleted_at AS anon_1_instances_deleted_at, anon_1.instances_deleted AS anon_1_instances_deleted, anon_1.instances_id AS anon_1_instances_id, anon_1.instances_user_id AS anon_1_instances_user_id, anon_1.instances_project_id AS anon_1_instances_project_id, anon_1.instances_image_ref AS anon_1_instances_image_ref, anon_1.instances_kernel_id AS anon_1_instances_kernel_id, anon_1.instances_ramdisk_id AS anon_1_instances_ramdisk_id, anon_1.instances_hostname AS anon_1_instances_hostname, anon_1.instances_launch_index AS anon_1_instances_launch_index, anon_1.instances_key_name AS anon_1_instances_key_name, anon_1.instances_key_data AS anon_1_instances_key_data, anon_1.instances_power_state AS anon_1_instances_power_state, anon_1.instances_vm_state AS anon_1_instances_vm_state, anon_1.instances_task_state AS anon_1_instances_task_state, anon_1.instances_memory_mb AS anon_1_instances_memory_mb, anon_1.instances_vcpus AS anon_1_instances_vcpus, anon_1.instances_root_gb AS anon_1_instances_root_gb, anon_1.instances_ephemeral_gb AS anon_1_instances_ephemeral_gb, anon_1.instances_ephemeral_key_uuid AS anon_1_instances_ephemeral_key_uuid, anon_1.instances_host AS anon_1_instances_host, anon_1.instances_node AS anon_1_instances_node, anon_1.instances_instance_type_id AS anon_1_instances_instance_type_id, anon_1.instances_user_data AS anon_1_instances_user_data, anon_1.instances_reservation_id AS anon_1_instances_reservation_id, anon_1.instances_launched_at AS anon_1_instances_launched_at, anon_1.instances_terminated_at AS anon_1_instances_terminated_at, anon_1.instances_availability_zone AS anon_1_instances_availability_zone, anon_1.instances_display_name AS anon_1_instances_display_name, anon_1.instances_display_description AS anon_1_instances_display_description, anon_1.instances_launched_on AS anon_1_instances_launched_on, anon_1.instances_locked AS anon_1_instances_locked, anon_1.instances_locked_by AS anon_1_instances_locked_by, anon_1.instances_os_type AS anon_1_instances_os_type, anon_1.instances_architecture AS anon_1_instances_architecture, anon_1.instances_vm_mode AS anon_1_instances_vm_mode, anon_1.instances_uuid AS anon_1_instances_uuid, anon_1.instances_root_device_name AS anon_1_instances_root_device_name, anon_1.instances_default_ephemeral_device AS anon_1_instances_default_ephemeral_device, anon_1.instances_default_swap_device AS anon_1_instances_default_swap_device, anon_1.instances_config_drive AS anon_1_instances_config_drive, anon_1.instances_access_ip_v4 AS anon_1_instances_access_ip_v4, anon_1.instances_access_ip_v6 AS anon_1_instances_access_ip_v6, anon_1.instances_auto_disk_config AS anon_1_instances_auto_disk_config, anon_1.instances_progress AS anon_1_instances_progress, anon_1.instances_shutdown_terminate AS anon_1_instances_shutdown_terminate, anon_1.instances_disable_terminate AS anon_1_instances_disable_terminate, anon_1.instances_cell_name AS anon_1_instances_cell_name, anon_1.instances_internal_id AS anon_1_instances_internal_id, anon_1.instances_cleaned AS anon_1_instances_cleaned, instance_extra_1.flavor AS instance_extra_1_flavor, instance_extra_1.created_at AS instance_extra_1_created_at, instance_extra_1.updated_at AS instance_extra_1_updated_at, instance_extra_1.deleted_at AS instance_extra_1_deleted_at, instance_extra_1.deleted AS instance_extra_1_deleted, instance_extra_1.id AS instance_extra_1_id, instance_extra_1.instance_uuid AS instance_extra_1_instance_uuid, instance_info_caches_1.created_at AS instance_info_caches_1_created_at, instance_info_caches_1.updated_at AS instance_info_caches_1_updated_at, instance_info_caches_1.deleted_at AS instance_info_caches_1_deleted_at, instance_info_caches_1.deleted AS instance_info_caches_1_deleted, instance_info_caches_1.id AS instance_info_caches_1_id, instance_info_caches_1.network_info AS instance_info_caches_1_network_info, instance_info_caches_1.instance_uuid AS instance_info_caches_1_instance_uuid, security_groups_1.created_at AS security_groups_1_created_at, security_groups_1.updated_at AS security_groups_1_updated_at, security_groups_1.deleted_at AS security_groups_1_deleted_at, security_groups_1.deleted AS security_groups_1_deleted, security_groups_1.id AS security_groups_1_id, security_groups_1.name AS security_groups_1_name, security_groups_1.description AS security_groups_1_description, security_groups_1.user_id AS security_groups_1_user_id, security_groups_1.project_id AS security_groups_1_project_id, instance_metadata_1.created_at AS instance_metadata_1_created_at, instance_metadata_1.updated_at AS instance_metadata_1_updated_at, instance_metadata_1.deleted_at AS instance_metadata_1_deleted_at, instance_metadata_1.deleted AS instance_metadata_1_deleted, instance_metadata_1.id AS instance_metadata_1_id, instance_metadata_1.`key` AS instance_metadata_1_key, instance_metadata_1.value AS instance_metadata_1_value, instance_metadata_1.instance_uuid AS instance_metadata_1_instance_uuid \nFROM (SELECT instances.created_at AS instances_created_at, instances.updated_at AS instances_updated_at, instances.deleted_at AS instances_deleted_at, instances.deleted AS instances_deleted, instances.id AS instances_id, instances.user_id AS instances_user_id, instances.project_id AS instances_project_id, instances.image_ref AS instances_image_ref, instances.kernel_id AS instances_kernel_id, instances.ramdisk_id AS instances_ramdisk_id, instances.hostname AS instances_hostname, instances.launch_index AS instances_launch_index, instances.key_name AS instances_key_name, instances.key_data AS instances_key_data, instances.power_state AS instances_power_state, instances.vm_state AS instances_vm_state, instances.task_state AS instances_task_state, instances.memory_mb AS instances_memory_mb, instances.vcpus AS instances_vcpus, instances.root_gb AS instances_root_gb, instances.ephemeral_gb AS instances_ephemeral_gb, instances.ephemeral_key_uuid AS instances_ephemeral_key_uuid, instances.host AS instances_host, instances.node AS instances_node, instances.instance_type_id AS instances_instance_type_id, instances.user_data AS instances_user_data, instances.reservation_id AS instances_reservation_id, instances.launched_at AS instances_launched_at, instances.terminated_at AS instances_terminated_at, instances.availability_zone AS instances_availability_zone, instances.display_name AS instances_display_name, instances.display_description AS instances_display_description, instances.launched_on AS instances_launched_on, instances.locked AS instances_locked, instances.locked_by AS instances_locked_by, instances.os_type AS instances_os_type, instances.architecture AS instances_architecture, instances.vm_mode AS instances_vm_mode, instances.uuid AS instances_uuid, instances.root_device_name AS instances_root_device_name, instances.default_ephemeral_device AS instances_default_ephemeral_device, instances.default_swap_device AS instances_default_swap_device, instances.config_drive AS instances_config_drive, instances.access_ip_v4 AS instances_access_ip_v4, instances.access_ip_v6 AS instances_access_ip_v6, instances.auto_disk_config AS instances_auto_disk_config, instances.progress AS instances_progress, instances.shutdown_terminate AS instances_shutdown_terminate, instances.disable_terminate AS instances_disable_terminate, instances.cell_name AS instances_cell_name, instances.internal_id AS instances_internal_id, instances.cleaned AS instances_cleaned \nFROM instances \nWHERE instances.deleted = %s AND (instances.vm_state != %s OR instances.vm_state IS NULL) AND instances.project_id = %s ORDER BY instances.created_at DESC, instances.id DESC \n LIMIT %s) AS anon_1 LEFT OUTER JOIN instance_extra AS instance_extra_1 ON instance_extra_1.instance_uuid = anon_1.instances_uuid LEFT OUTER JOIN instance_info_caches AS instance_info_caches_1 ON instance_info_caches_1.instance_uuid = anon_1.instances_uuid LEFT OUTER JOIN (security_group_instance_association AS security_group_instance_association_1 INNER JOIN security_groups AS security_groups_1 ON security_groups_1.id = security_group_instance_association_1.security_group_id AND security_group_instance_association_1.deleted = %s AND security_groups_1.deleted = %s) ON security_group_instance_association_1.instance_uuid = anon_1.instances_uuid AND anon_1.instances_deleted = %s LEFT OUTER JOIN instance_metadata AS instance_metadata_1 ON instance_metadata_1.instance_uuid = anon_1.instances_uuid AND instance_metadata_1.deleted = %s ORDER BY anon_1.instances_created_at DESC, anon_1.instances_id DESC'] [parameters: (0, 'soft-delete', u'2204caa77724423e820c36db45439124', 1000, 0, 0, 0, 0)]
  2016-11-27 07:06:32.394 27622 ERROR nova.api.openstack.extensions [req-451274ad-209b-48dd-a592-363c73a678f9 d4eb954193b749e792dcdf352bace825 2204caa77724423e820c36db45439124 - - -] Unexpected exception in API method
  2016-11-27 07:06:32.399 27622 INFO nova.api.openstack.wsgi [req-451274ad-209b-48dd-a592-363c73a678f9 d4eb954193b749e792dcdf352bace825 2204caa77724423e820c36db45439124 - - -] HTTP exception thrown: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
  2016-11-27 07:06:32.400 27622 INFO nova.osapi_compute.wsgi.server [req-451274ad-209b-48dd-a592-363c73a678f9 d4eb954193b749e792dcdf352bace825 2204caa77724423e820c36db45439124 - - -] 10.39.158.135 "GET /v2/2204caa77724423e820c36db45439124/servers/detail HTTP/1.1" status: 500 len: 430 time: 0.0350761

  
  ## Workaround: 

  After openstack-service restart nova, then instances were again
  displayed properly.

  
  ## What we found:

  We observed the following:

  # grep -ir open_files_limit /etc/my.cnf.d/
  /etc/my.cnf.d/server.cnf:open_files_limit = -1
  # mysql -e "SHOW VARIABLES LIKE 'open_files_limit';"
  +------------------+-------+
  | Variable_name    | Value |
  +------------------+-------+
  | open_files_limit | 1024  |
  +------------------+-------+

   
  #Environment version: 12.0.4 (Liberty)

  #nova-manage --version
  No handlers could be found for logger "oslo_config.cfg"
  12.0.4

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