+ COMMAND=start + start + exec uwsgi --ini /etc/nova/nova-api-uwsgi.ini [uWSGI] getting INI configuration from /etc/nova/nova-api-uwsgi.ini *** Starting uWSGI 2.0.31 (64bit) on [Sat Aug 22 03:24:47 2026] *** compiled with version: 13.3.0 on 02 June 2026 01:55:00 os: Linux-5.15.0-190-generic #200-Ubuntu SMP Fri Aug 7 15:06:04 UTC 2026 nodename: nova-api-osapi-7d6cb8bfb5-z7hvg machine: x86_64 clock source: unix pcre jit disabled detected number of CPU cores: 16 current working directory: / detected binary path: /var/lib/openstack/bin/uwsgi *** dumping internal routing table *** [rule: 0] subject: user_agent regexp: ^kube-probe.* action: donotlog: *** end of the internal routing table *** your memory page size is 4096 bytes detected max file descriptor number: 1048576 lock engine: pthread robust mutexes thunder lock: enabled uwsgi socket 0 bound to TCP address 0.0.0.0:8774 fd 3 Python version: 3.12.3 (main, Mar 3 2026, 12:15:18) [GCC 13.3.0] Python main interpreter initialized at 0x7f2f60f30668 python threads support enabled your server socket listen backlog is limited to 100 connections your mercy for graceful operations on workers is 80 seconds mapped 403077 bytes (393 KB) for 2 cores *** Operational MODE: preforking *** *** uWSGI is running in multiple interpreter mode *** spawned uWSGI master process (pid: 1) spawned uWSGI worker 1 (pid: 7, cores: 1) spawned uWSGI worker 2 (pid: 8, cores: 1) running "unix_signal:15 gracefully_kill_them_all" (master-start)... 2026-08-22 03:24:52.301 8 INFO nova.utils [None req-0239f251-1da2-4680-ad17-cef3c31b48cf - - - - - -] The cell worker thread pool MainProcess.cell_worker is initialized 2026-08-22 03:24:52.522 7 INFO nova.utils [None req-cf46e26f-19c9-4b6a-9070-7c8e96d024f7 - - - - - -] The cell worker thread pool MainProcess.cell_worker is initialized 2026-08-22 03:24:54.078 8 WARNING keystonemiddleware._common.config [None req-0239f251-1da2-4680-ad17-cef3c31b48cf - - - - - -] The option "audit_map_file" is not known to keystonemiddleware 2026-08-22 03:24:54.088 8 WARNING keystonemiddleware.auth_token [None req-0239f251-1da2-4680-ad17-cef3c31b48cf - - - - - -] Configuring www_authenticate_uri to point to the public identity endpoint is required; clients may not be able to authenticate against an admin endpoint 2026-08-22 03:24:54.150 8 WARNING keystonemiddleware._common.config [None req-0239f251-1da2-4680-ad17-cef3c31b48cf - - - - - -] The option "audit_map_file" is not known to keystonemiddleware 2026-08-22 03:24:54.157 8 WARNING keystonemiddleware.auth_token [None req-0239f251-1da2-4680-ad17-cef3c31b48cf - - - - - -] Configuring www_authenticate_uri to point to the public identity endpoint is required; clients may not be able to authenticate against an admin endpoint 2026-08-22 03:24:54.167 8 WARNING oslo_config.cfg [None req-0239f251-1da2-4680-ad17-cef3c31b48cf - - - - - -] Deprecated: Option "api_servers" from group "glance" is deprecated for removal ( Support for image service configuration via standard keystoneauth1 Adapter options was added in the 17.0.0 Queens release. The api_servers option was retained temporarily to allow consumers time to cut over to a real load balancing solution. ). Its value may be silently ignored in the future. WSGI app 0 (mountpoint='') ready in 7 seconds on interpreter 0x7f2f60f30668 pid: 8 (default app) 2026-08-22 03:24:54.186 7 WARNING keystonemiddleware._common.config [None req-cf46e26f-19c9-4b6a-9070-7c8e96d024f7 - - - - - -] The option "audit_map_file" is not known to keystonemiddleware 2026-08-22 03:24:54.195 7 WARNING keystonemiddleware.auth_token [None req-cf46e26f-19c9-4b6a-9070-7c8e96d024f7 - - - - - -] Configuring www_authenticate_uri to point to the public identity endpoint is required; clients may not be able to authenticate against an admin endpoint 2026-08-22 03:24:54.260 7 WARNING keystonemiddleware._common.config [None req-cf46e26f-19c9-4b6a-9070-7c8e96d024f7 - - - - - -] The option "audit_map_file" is not known to keystonemiddleware 2026-08-22 03:24:54.267 7 WARNING keystonemiddleware.auth_token [None req-cf46e26f-19c9-4b6a-9070-7c8e96d024f7 - - - - - -] Configuring www_authenticate_uri to point to the public identity endpoint is required; clients may not be able to authenticate against an admin endpoint 2026-08-22 03:24:54.277 7 WARNING oslo_config.cfg [None req-cf46e26f-19c9-4b6a-9070-7c8e96d024f7 - - - - - -] Deprecated: Option "api_servers" from group "glance" is deprecated for removal ( Support for image service configuration via standard keystoneauth1 Adapter options was added in the 17.0.0 Queens release. The api_servers option was retained temporarily to allow consumers time to cut over to a real load balancing solution. ). Its value may be silently ignored in the future. WSGI app 0 (mountpoint='') ready in 7 seconds on interpreter 0x7f2f60f30668 pid: 7 (default app) [pid: 7|app: 0|req: 3/4] 199.204.45.22 () {42 vars in 701 bytes} [Sat Aug 22 03:25:00 2026] GET /v2.1 => generated 114 bytes in 15 msecs (HTTP/1.1 401) 6 headers in 319 bytes (1 switches on core 0) /var/lib/openstack/lib/python3.12/site-packages/pycadf/identifier.py:70: UserWarning: Invalid uuid: unknown. To ensure interoperability, identifiers should be a valid uuid. warnings.warn(('Invalid uuid: %s. To ensure interoperability, ' [pid: 8|app: 0|req: 2/5] 199.204.45.22 () {44 vars in 905 bytes} [Sat Aug 22 03:25:00 2026] GET /v2.1 => generated 0 bytes in 573 msecs (HTTP/1.1 302) 5 headers in 265 bytes (0 switches on core 0) /var/lib/openstack/lib/python3.12/site-packages/pycadf/identifier.py:70: UserWarning: Invalid uuid: unknown. To ensure interoperability, identifiers should be a valid uuid. warnings.warn(('Invalid uuid: %s. To ensure interoperability, ' [pid: 7|app: 0|req: 4/6] 199.204.45.22 () {46 vars in 978 bytes} [Sat Aug 22 03:25:01 2026] GET /v2.1/ => generated 399 bytes in 93 msecs (HTTP/1.1 200) 9 headers in 357 bytes (1 switches on core 0) 2026-08-22 03:25:01.580 8 INFO nova.api.openstack.wsgi [None req-6b3c4c33-2894-4e29-a27c-cff5bca2baa5 db2b9a27aef14663a197845f9daabbd9 0a36aace0d2345bf82e4eba0abf3d8c1 - - default default] HTTP exception thrown: Flavor m1.tiny could not be found. [pid: 8|app: 0|req: 3/7] 199.204.45.22 () {48 vars in 1007 bytes} [Sat Aug 22 03:25:01 2026] GET /v2.1/flavors/m1.tiny => generated 80 bytes in 26 msecs (HTTP/1.1 404) 9 headers in 380 bytes (1 switches on core 0) [pid: 7|app: 0|req: 5/8] 199.204.45.22 () {48 vars in 1047 bytes} [Sat Aug 22 03:25:01 2026] GET /v2.1/flavors/detail?is_public=None => generated 15 bytes in 20 msecs (HTTP/1.1 200) 9 headers in 358 bytes (1 switches on core 0) [pid: 8|app: 0|req: 4/9] 199.204.45.22 () {52 vars in 1044 bytes} [Sat Aug 22 03:25:01 2026] POST /v2.1/flavors => generated 527 bytes in 43 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0) [pid: 7|app: 0|req: 6/10] 199.204.45.22 () {42 vars in 701 bytes} [Sat Aug 22 03:25:02 2026] GET /v2.1 => generated 114 bytes in 1 msecs (HTTP/1.1 401) 6 headers in 319 bytes (1 switches on core 0) [pid: 8|app: 0|req: 5/11] 199.204.45.22 () {44 vars in 905 bytes} [Sat Aug 22 03:25:02 2026] GET /v2.1 => generated 0 bytes in 33 msecs (HTTP/1.1 302) 5 headers in 265 bytes (0 switches on core 0) [pid: 7|app: 0|req: 7/12] 199.204.45.22 () {46 vars in 978 bytes} [Sat Aug 22 03:25:02 2026] GET /v2.1/ => generated 399 bytes in 12 msecs (HTTP/1.1 200) 9 headers in 357 bytes (1 switches on core 0) 2026-08-22 03:25:02.558 8 INFO nova.api.openstack.wsgi [None req-9bbc1c68-68eb-44ac-b2b1-1e34345262a6 db2b9a27aef14663a197845f9daabbd9 0a36aace0d2345bf82e4eba0abf3d8c1 - - default default] HTTP exception thrown: Flavor m1.small could not be found. [pid: 8|app: 0|req: 6/13] 199.204.45.22 () {48 vars in 1009 bytes} [Sat Aug 22 03:25:02 2026] GET /v2.1/flavors/m1.small => generated 81 bytes in 11 msecs (HTTP/1.1 404) 9 headers in 380 bytes (1 switches on core 0) [pid: 7|app: 0|req: 8/14] 199.204.45.22 () {48 vars in 1047 bytes} [Sat Aug 22 03:25:02 2026] GET /v2.1/flavors/detail?is_public=None => generated 530 bytes in 16 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0) [pid: 8|app: 0|req: 7/15] 199.204.45.22 () {52 vars in 1044 bytes} [Sat Aug 22 03:25:02 2026] POST /v2.1/flavors => generated 530 bytes in 20 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0) [pid: 7|app: 0|req: 9/16] 199.204.45.22 () {42 vars in 701 bytes} [Sat Aug 22 03:25:03 2026] GET /v2.1 => generated 114 bytes in 1 msecs (HTTP/1.1 401) 6 headers in 319 bytes (1 switches on core 0) [pid: 8|app: 0|req: 8/17] 199.204.45.22 () {44 vars in 905 bytes} [Sat Aug 22 03:25:03 2026] GET /v2.1 => generated 0 bytes in 54 msecs (HTTP/1.1 302) 5 headers in 265 bytes (0 switches on core 0) [pid: 7|app: 0|req: 10/18] 199.204.45.22 () {46 vars in 978 bytes} [Sat Aug 22 03:25:03 2026] GET /v2.1/ => generated 399 bytes in 9 msecs (HTTP/1.1 200) 9 headers in 357 bytes (1 switches on core 0) 2026-08-22 03:25:03.493 8 INFO nova.api.openstack.wsgi [None req-eb430827-6dbc-4b40-83bf-f4a8f7f2247b db2b9a27aef14663a197845f9daabbd9 0a36aace0d2345bf82e4eba0abf3d8c1 - - default default] HTTP exception thrown: Flavor m1.medium could not be found. [pid: 8|app: 0|req: 9/19] 199.204.45.22 () {48 vars in 1011 bytes} [Sat Aug 22 03:25:03 2026] GET /v2.1/flavors/m1.medium => generated 82 bytes in 12 msecs (HTTP/1.1 404) 9 headers in 380 bytes (1 switches on core 0) [pid: 7|app: 0|req: 11/20] 199.204.45.22 () {48 vars in 1047 bytes} [Sat Aug 22 03:25:03 2026] GET /v2.1/flavors/detail?is_public=None => generated 1050 bytes in 19 msecs (HTTP/1.1 200) 9 headers in 360 bytes (1 switches on core 0) [pid: 8|app: 0|req: 10/21] 199.204.45.22 () {52 vars in 1044 bytes} [Sat Aug 22 03:25:03 2026] POST /v2.1/flavors => generated 531 bytes in 24 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0) [pid: 7|app: 0|req: 12/22] 199.204.45.22 () {42 vars in 701 bytes} [Sat Aug 22 03:25:04 2026] GET /v2.1 => generated 114 bytes in 2 msecs (HTTP/1.1 401) 6 headers in 319 bytes (1 switches on core 0) [pid: 8|app: 0|req: 11/23] 199.204.45.22 () {44 vars in 905 bytes} [Sat Aug 22 03:25:04 2026] GET /v2.1 => generated 0 bytes in 31 msecs (HTTP/1.1 302) 5 headers in 265 bytes (0 switches on core 0) [pid: 7|app: 0|req: 13/24] 199.204.45.22 () {46 vars in 978 bytes} [Sat Aug 22 03:25:04 2026] GET /v2.1/ => generated 399 bytes in 12 msecs (HTTP/1.1 200) 9 headers in 357 bytes (1 switches on core 0) 2026-08-22 03:25:04.442 8 INFO nova.api.openstack.wsgi [None req-4d57563e-784b-45c2-a15c-5754691e4050 db2b9a27aef14663a197845f9daabbd9 0a36aace0d2345bf82e4eba0abf3d8c1 - - default default] HTTP exception thrown: Flavor m1.large could not be found. [pid: 8|app: 0|req: 12/25] 199.204.45.22 () {48 vars in 1009 bytes} [Sat Aug 22 03:25:04 2026] GET /v2.1/flavors/m1.large => generated 81 bytes in 15 msecs (HTTP/1.1 404) 9 headers in 380 bytes (1 switches on core 0) [pid: 7|app: 0|req: 14/26] 199.204.45.22 () {48 vars in 1047 bytes} [Sat Aug 22 03:25:04 2026] GET /v2.1/flavors/detail?is_public=None => generated 1571 bytes in 24 msecs (HTTP/1.1 200) 9 headers in 360 bytes (1 switches on core 0) [pid: 8|app: 0|req: 13/27] 199.204.45.22 () {52 vars in 1044 bytes} [Sat Aug 22 03:25:04 2026] POST /v2.1/flavors => generated 530 bytes in 24 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0) [pid: 7|app: 0|req: 16/30] 199.204.45.22 () {42 vars in 701 bytes} [Sat Aug 22 03:25:05 2026] GET /v2.1 => generated 114 bytes in 1 msecs (HTTP/1.1 401) 6 headers in 319 bytes (1 switches on core 0) [pid: 8|app: 0|req: 15/31] 199.204.45.22 () {44 vars in 905 bytes} [Sat Aug 22 03:25:05 2026] GET /v2.1 => generated 0 bytes in 30 msecs (HTTP/1.1 302) 5 headers in 265 bytes (0 switches on core 0) [pid: 7|app: 0|req: 17/32] 199.204.45.22 () {46 vars in 978 bytes} [Sat Aug 22 03:25:05 2026] GET /v2.1/ => generated 399 bytes in 17 msecs (HTTP/1.1 200) 9 headers in 357 bytes (1 switches on core 0) 2026-08-22 03:25:05.388 8 INFO nova.api.openstack.wsgi [None req-902c0b7b-7db5-4249-b9f5-29ba7849fd19 db2b9a27aef14663a197845f9daabbd9 0a36aace0d2345bf82e4eba0abf3d8c1 - - default default] HTTP exception thrown: Flavor m1.xlarge could not be found. [pid: 8|app: 0|req: 16/33] 199.204.45.22 () {48 vars in 1011 bytes} [Sat Aug 22 03:25:05 2026] GET /v2.1/flavors/m1.xlarge => generated 82 bytes in 15 msecs (HTTP/1.1 404) 9 headers in 380 bytes (1 switches on core 0) [pid: 7|app: 0|req: 18/34] 199.204.45.22 () {48 vars in 1047 bytes} [Sat Aug 22 03:25:05 2026] GET /v2.1/flavors/detail?is_public=None => generated 2091 bytes in 24 msecs (HTTP/1.1 200) 9 headers in 360 bytes (1 switches on core 0) [pid: 8|app: 0|req: 17/35] 199.204.45.22 () {52 vars in 1044 bytes} [Sat Aug 22 03:25:05 2026] POST /v2.1/flavors => generated 533 bytes in 20 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0) [pid: 8|app: 0|req: 57/114] 10.0.0.91 () {28 vars in 454 bytes} [Sat Aug 22 03:31:38 2026] GET /v2.1 => generated 114 bytes in 2 msecs (HTTP/1.1 401) 6 headers in 322 bytes (1 switches on core 0) /var/lib/openstack/lib/python3.12/site-packages/pycadf/identifier.py:70: UserWarning: Invalid uuid: nova. To ensure interoperability, identifiers should be a valid uuid. warnings.warn(('Invalid uuid: %s. To ensure interoperability, ' [pid: 7|app: 0|req: 58/115] 10.0.0.91 () {30 vars in 658 bytes} [Sat Aug 22 03:31:38 2026] GET /v2.1 => generated 0 bytes in 436 msecs (HTTP/1.1 302) 5 headers in 277 bytes (0 switches on core 0) /var/lib/openstack/lib/python3.12/site-packages/pycadf/identifier.py:70: UserWarning: Invalid uuid: nova. To ensure interoperability, identifiers should be a valid uuid. warnings.warn(('Invalid uuid: %s. To ensure interoperability, ' [pid: 8|app: 0|req: 58/116] 10.0.0.91 () {32 vars in 731 bytes} [Sat Aug 22 03:31:39 2026] GET /v2.1/ => generated 411 bytes in 15 msecs (HTTP/1.1 200) 9 headers in 357 bytes (1 switches on core 0) [pid: 7|app: 0|req: 59/117] 10.0.0.91 () {34 vars in 804 bytes} [Sat Aug 22 03:31:39 2026] GET /v2.1/os-services?binary=nova-compute => generated 251 bytes in 102 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0) [pid: 8|app: 0|req: 78/156] 199.204.45.22 () {42 vars in 701 bytes} [Sat Aug 22 03:34:54 2026] GET /v2.1 => generated 114 bytes in 2 msecs (HTTP/1.1 401) 6 headers in 322 bytes (1 switches on core 0) /var/lib/openstack/lib/python3.12/site-packages/pycadf/identifier.py:70: UserWarning: Invalid uuid: unknown. To ensure interoperability, identifiers should be a valid uuid. warnings.warn(('Invalid uuid: %s. To ensure interoperability, ' [pid: 7|app: 0|req: 79/157] 199.204.45.22 () {44 vars in 905 bytes} [Sat Aug 22 03:34:54 2026] GET /v2.1 => generated 0 bytes in 99 msecs (HTTP/1.1 302) 5 headers in 265 bytes (0 switches on core 0) [pid: 8|app: 0|req: 79/158] 199.204.45.22 () {46 vars in 978 bytes} [Sat Aug 22 03:34:54 2026] GET /v2.1/ => generated 399 bytes in 13 msecs (HTTP/1.1 200) 9 headers in 357 bytes (1 switches on core 0) 2026-08-22 03:34:54.175 7 INFO nova.api.openstack.wsgi [None req-1044d9ab-2167-485a-996a-d1e5e97a749e db2b9a27aef14663a197845f9daabbd9 0a36aace0d2345bf82e4eba0abf3d8c1 - - default default] HTTP exception thrown: Flavor m1.amphora could not be found. [pid: 7|app: 0|req: 80/159] 199.204.45.22 () {48 vars in 1013 bytes} [Sat Aug 22 03:34:54 2026] GET /v2.1/flavors/m1.amphora => generated 83 bytes in 18 msecs (HTTP/1.1 404) 9 headers in 380 bytes (1 switches on core 0) [pid: 8|app: 0|req: 80/160] 199.204.45.22 () {48 vars in 1047 bytes} [Sat Aug 22 03:34:54 2026] GET /v2.1/flavors/detail?is_public=None => generated 2614 bytes in 21 msecs (HTTP/1.1 200) 9 headers in 360 bytes (1 switches on core 0) [pid: 7|app: 0|req: 81/161] 199.204.45.22 () {52 vars in 1045 bytes} [Sat Aug 22 03:34:54 2026] POST /v2.1/flavors => generated 532 bytes in 39 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0) [pid: 8|app: 0|req: 87/174] 199.204.45.22 () {42 vars in 701 bytes} [Sat Aug 22 03:35:49 2026] GET /v2.1 => generated 114 bytes in 2 msecs (HTTP/1.1 401) 6 headers in 322 bytes (1 switches on core 0) [pid: 7|app: 0|req: 88/175] 199.204.45.22 () {44 vars in 905 bytes} [Sat Aug 22 03:35:49 2026] GET /v2.1 => generated 0 bytes in 36 msecs (HTTP/1.1 302) 5 headers in 265 bytes (0 switches on core 0) [pid: 8|app: 0|req: 88/176] 199.204.45.22 () {46 vars in 978 bytes} [Sat Aug 22 03:35:49 2026] GET /v2.1/ => generated 399 bytes in 14 msecs (HTTP/1.1 200) 9 headers in 357 bytes (1 switches on core 0) 2026-08-22 03:35:49.171 7 INFO nova.api.openstack.wsgi [None req-89948604-4390-4fb8-afc5-154b5248cf4c db2b9a27aef14663a197845f9daabbd9 0a36aace0d2345bf82e4eba0abf3d8c1 - - default default] HTTP exception thrown: Keypair octavia-amphora-ssh-key not found for user db2b9a27aef14663a197845f9daabbd9 [pid: 7|app: 0|req: 89/177] 199.204.45.22 () {48 vars in 1047 bytes} [Sat Aug 22 03:35:49 2026] GET /v2.1/os-keypairs/octavia-amphora-ssh-key => generated 129 bytes in 17 msecs (HTTP/1.1 404) 9 headers in 381 bytes (1 switches on core 0) 2026-08-22 03:35:49.187 8 WARNING oslo_db.sqlalchemy.utils [None req-fe137d94-625a-4501-b061-5c72af4d34b8 db2b9a27aef14663a197845f9daabbd9 0a36aace0d2345bf82e4eba0abf3d8c1 - - default default] Unique keys not in sort_keys. The sorting order may be unstable. [pid: 8|app: 0|req: 89/178] 199.204.45.22 () {48 vars in 1012 bytes} [Sat Aug 22 03:35:49 2026] GET /v2.1/os-keypairs => generated 16 bytes in 15 msecs (HTTP/1.1 200) 9 headers in 358 bytes (1 switches on core 0) [pid: 7|app: 0|req: 90/179] 199.204.45.22 () {52 vars in 1053 bytes} [Sat Aug 22 03:35:49 2026] POST /v2.1/os-keypairs => generated 576 bytes in 99 msecs (HTTP/1.1 201) 9 headers in 364 bytes (1 switches on core 0) [pid: 8|app: 0|req: 90/180] 199.204.45.22 () {42 vars in 701 bytes} [Sat Aug 22 03:35:53 2026] GET /v2.1 => generated 114 bytes in 1 msecs (HTTP/1.1 401) 6 headers in 322 bytes (1 switches on core 0) [pid: 7|app: 0|req: 91/181] 199.204.45.22 () {44 vars in 905 bytes} [Sat Aug 22 03:35:53 2026] GET /v2.1 => generated 0 bytes in 4 msecs (HTTP/1.1 302) 5 headers in 265 bytes (0 switches on core 0) [pid: 8|app: 0|req: 91/182] 199.204.45.22 () {46 vars in 978 bytes} [Sat Aug 22 03:35:53 2026] GET /v2.1/ => generated 399 bytes in 10 msecs (HTTP/1.1 200) 9 headers in 357 bytes (1 switches on core 0) [pid: 7|app: 0|req: 92/183] 199.204.45.22 () {48 vars in 1069 bytes} [Sat Aug 22 03:35:53 2026] GET /v2.1/os-quota-sets/0a36aace0d2345bf82e4eba0abf3d8c1 => generated 283 bytes in 49 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0) [pid: 8|app: 0|req: 92/184] 199.204.45.22 () {52 vars in 1121 bytes} [Sat Aug 22 03:35:53 2026] PUT /v2.1/os-quota-sets/0a36aace0d2345bf82e4eba0abf3d8c1 => generated 238 bytes in 258 msecs (HTTP/1.1 200) 9 headers in 359 bytes (1 switches on core 0)