[ovirt-users] Re: Unable to migrate Engine to another HE Host

Investigation so far has showed, that symlink for conf_volume/conf_image is missing on Hosts 1 and 3. According to the ovirt-engine deep dive, connection/access to conf_volume is required for adding new HE Hosts as it holds its configuration template. This is most likely the reason why I could not add new Host and why the Host1 and Host3 were occasionally complaining the the conf_image_uuid is missing. I also checked the DB tb images – the conf_image and conf_volume entries exist. Question: Considering DB entries seem correct, am I “safe” to manually create the symlink on Host1 and Host3 , from global maintenance mode, set correct permissions and than exit maintenance mode? ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic@activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. From: Marko Vrgotic <M.Vrgotic(a)activevideo.com&gt; Date: Monday, 3 May 2021 at 12:44 To: Yedidyah Bar David <didi(a)redhat.com&gt;, Strahil Nikolov <hunter86_bg(a)yahoo.com&gt; Cc: users(a)ovirt.org <users(a)ovirt.org&gt; Subject: Re: [ovirt-users] Re: Unable to migrate Engine to another HE Host Dear Strahil and Yedidyah, Is it possible that HostedEngine DEPLOY on Host2 is failing due to “inability” to access the conf_volume_UUID “c518f937-60fe-4fed-a54c-db11328bb507” I do not see that error message on Host2, but I see it on Host1 and Host3: 2021-05-03 02:43:32,438-0700 ERROR (jsonrpc/5) [storage.TaskManager.Task] (Task='b4bba796-b62b-41cb-8d91-6637c5fb9705') Unexpected error (task:875) 2021-05-03 02:43:32,439-0700 ERROR (jsonrpc/5) [storage.Dispatcher] FINISH prepareImage error=Volume does not exist: (u'c518f937-60fe-4fed-a54c-db11328bb507',) (dispatcher:83) Could this be result of hosted-engine.conf staying empty and deployment not working? If I check the /var/log/ovirt-hosted-engine-setup/ folder is empty. ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic@activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. From: Marko Vrgotic <M.Vrgotic(a)activevideo.com&gt; Date: Monday, 3 May 2021 at 11:38 To: Yedidyah Bar David <didi(a)redhat.com&gt;, Strahil Nikolov <hunter86_bg(a)yahoo.com&gt; Cc: users(a)ovirt.org <users(a)ovirt.org&gt; Subject: Re: [ovirt-users] Re: Unable to migrate Engine to another HE Host This is ERROR i caught on Host2 during HE Deploy: 2021-05-03 02:36:07,982-0700 ERROR (periodic/0) [root] failed to retrieve Hosted Engine HA score '[Errno 2] No such file or directory'Is the Hosted Engine setup finished? (api:196) 2021-05-03 02:36:07,985-0700 INFO (MainThread) [vds] Received signal 15, shutting down (vdsmd:71) 2021-05-03 02:36:07,987-0700 ERROR (ioprocess/4934) [IOProcessClient] (054c43fc-1924-4106-9f80-0f2ac62b9886) Communication thread failed (__init__:160) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/ioprocess/__init__.py", line 114, in _communicate raise Exception("FD closed") Exception: FD closed 2021-05-03 02:36:07,992-0700 ERROR (ioprocess/4948) [IOProcessClient] (ec0dc13d-8721-42a1-a5c3-762a3e235f76) Communication thread failed (__init__:160) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/ioprocess/__init__.py", line 114, in _communicate raise Exception("FD closed") Exception: FD closed 2021-05-03 02:36:08,009-0700 INFO (MainThread) [jsonrpc.JsonRpcServer] Stopping JsonRPC Server (__init__:442) ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic@activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. From: Marko Vrgotic <M.Vrgotic(a)activevideo.com&gt; Date: Monday, 3 May 2021 at 11:34 To: Yedidyah Bar David <didi(a)redhat.com&gt;, Strahil Nikolov <hunter86_bg(a)yahoo.com&gt; Cc: users(a)ovirt.org <users(a)ovirt.org&gt; Subject: Re: [ovirt-users] Re: Unable to migrate Engine to another HE Host I executed ovirt-hosted-engine-cleanup on Host2 and it seems as it went ok: [root@ovirt-sj-02 log]# ovirt-hosted-engine-cleanup This will de-configure the host to run ovirt-hosted-engine-setup from scratch. Caution, this operation should be used with care.Are you sure you want to proceed? [y/n] y -=== Destroy hosted-engine VM ===- You must run deploy first error: failed to get domain 'HostedEngine' error: Domain not found: no domain with matching name 'HostedEngine' -=== Stop HA services ===- -=== Shutdown sanlock ===- shutdown force 1 wait 0 shutdown done 0 -=== Disconnecting the hosted-engine storage domain ===- You must run deploy first -=== De-configure VDSM networks ===- ovirtmgmt ovirtmgmt A previously configured management bridge has been found on the system, this will try to de-configure it. Under certain circumstances you can loose network connection. Caution, this operation should be used with care.Are you sure you want to proceed? [y/n] y -=== Stop other services ===- -=== De-configure external daemons ===- Removing database file /var/lib/vdsm/storage/managedvolume.db -=== Removing configuration files ===- ? /etc/init/libvirtd.conf already missing - removing /etc/libvirt/nwfilter/vdsm-no-mac-spoofing.xml ? /etc/ovirt-hosted-engine/answers.conf already missing - removing /etc/ovirt-hosted-engine/hosted-engine.conf - removing /etc/vdsm/vdsm.conf - removing /etc/pki/vdsm/certs/cacert.pem - removing /etc/pki/vdsm/certs/vdsmcert.pem - removing /etc/pki/vdsm/keys/vdsmkey.pem - removing /etc/pki/vdsm/libvirt-spice/ca-cert.pem - removing /etc/pki/vdsm/libvirt-spice/server-cert.pem - removing /etc/pki/vdsm/libvirt-spice/server-key.pem - removing /etc/pki/vdsm/libvirt-vnc/ca-cert.pem - removing /etc/pki/vdsm/libvirt-vnc/server-cert.pem - removing /etc/pki/vdsm/libvirt-vnc/server-key.pem - removing /etc/pki/CA/cacert.pem - removing /etc/pki/libvirt/clientcert.pem - removing /etc/pki/libvirt/private/clientkey.pem ? /etc/pki/ovirt-vmconsole/*.pem already missing - removing /var/cache/libvirt/qemu ? /var/run/ovirt-hosted-engine-ha/* already missing -=== Removing IP Rules ===- Reran the HE Deploy on Host2 and from logs I see exactly same situation as in my previous email. This is AGENT|BROKER logs with DEBUG: MainThread::INFO::2021-05-03 02:32:47,007::agent::67::ovirt_hosted_engine_ha.agent.agent.Agent::(run) ovirt-hosted-engine-ha agent 2.3.6 started MainThread::DEBUG::2021-05-03 02:32:47,007::agent::72::ovirt_hosted_engine_ha.agent.agent.Agent::(run) Running agent MainThread::DEBUG::2021-05-03 02:32:47,007::hosted_engine::220::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_get_hostname) Executing: openssl x509 -in /etc/pki/vdsm/certs/vdsmcert.pem -noout -subject MainThread::DEBUG::2021-05-03 02:32:47,064::hosted_engine::230::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_get_hostname) Certificate subject: subject= /O=ictv.com/CN=ovirt-sj-02.ictv.com MainThread::INFO::2021-05-03 02:32:47,065::hosted_engine::234::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_get_hostname) Found certificate common name: ovirt-sj-02.ictv.com MainThread::DEBUG::2021-05-03 02:32:47,066::hosted_engine::568::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_vdsm) Initializing VDSM MainThread::DEBUG::2021-05-03 02:32:47,066::hosted_engine::600::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_check_service) Checking vdsmd status MainThread::DEBUG::2021-05-03 02:32:47,130::hosted_engine::605::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_check_service) vdsmd running MainThread::DEBUG::2021-05-03 02:32:47,130::util::384::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(__log_debug) Creating a new json-rpc connection to VDSM Client localhost:54321::DEBUG::2021-05-03 02:32:47,144::concurrent::258::root::(run) START thread <Thread(Client localhost:54321, started daemon 140520355350272)> (func=<bound method Reactor.process_requests of <yajsonrpc.betterAsyncore.Reactor object at 0x7fcd71fe9590>>, args=(), kwargs={}) Client localhost:54321::DEBUG::2021-05-03 02:32:47,151::stompclient::138::yajsonrpc.protocols.stomp.AsyncClient::(_process_connected) Stomp connection established MainThread::DEBUG::2021-05-03 02:32:47,161::stompclient::294::jsonrpc.AsyncoreClient::(send) Sending response MainThread::INFO::2021-05-03 02:32:47,192::hosted_engine::543::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Initializing ha-broker connection MainThread::INFO::2021-05-03 02:32:47,195::brokerlink::80::ovirt_hosted_engine_ha.lib.brokerlink.BrokerLink::(start_monitor) Starting monitor network, options {'tcp_t_address': None, 'network_test': None, 'tcp_t_port': None, 'addr': None} MainThread::ERROR::2021-05-03 02:32:47,195::hosted_engine::559::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Failed to start necessary monitors MainThread::ERROR::2021-05-03 02:32:47,196::agent::144::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 131, in _run_agent return action(he) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 55, in action_proper return he.start_monitoring() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 432, in start_monitoring self._initialize_broker() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 556, in _initialize_broker m.get('options', {})) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 89, in start_monitor ).format(t=type, o=options, e=e) RequestError: brokerlink - failed to start monitor via ovirt-ha-broker: [Errno 2] No such file or directory, [monitor: 'network', options: {'tcp_t_address': None, 'network_test': None, 'tcp_t_port': None, 'addr': None}] MainThread::ERROR::2021-05-03 02:32:47,196::agent::145::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Trying to restart agent MainThread::INFO::2021-05-03 02:32:47,196::agent::89::ovirt_hosted_engine_ha.agent.agent.Agent::(run) Agent shutting down ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic@activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. From: Marko Vrgotic <M.Vrgotic(a)activevideo.com&gt; Date: Monday, 3 May 2021 at 10:19 To: Yedidyah Bar David <didi(a)redhat.com&gt;, Strahil Nikolov <hunter86_bg(a)yahoo.com&gt; Cc: users(a)ovirt.org <users(a)ovirt.org&gt; Subject: Re: [ovirt-users] Re: Unable to migrate Engine to another HE Host Hi Strahil and Yedidyah, First of all I want to thank you for helping me. So, this is what I did: * Executed steps as in https://access.redhat.com/solutions/2212601 and https://access.redhat.com/solutions/3319891 on working Hosts (Host1 and Host3) – to clean up failed deployment * Verified on Host1 and Host3 that metadata is cleaned by running : [root@ovirt-sj-03 ~]# hosted-engine --vm-status | grep -B2 "Host ID" Status up-to-date : True Hostname : ovirt-sj-01.ictv.com Host ID : 1 -- Status up-to-date : True Hostname : ovirt-sj-03.ictv.com Host ID : 3 * Reran hosted-engine deploy from UI on Host2 From the start of deployment, I could see following ERROR messages on Host2: VDSM: 2021-05-03 07:58:21,205+0000 ERROR (periodic/3) [root] failed to retrieve Hosted Engine HA score '[Errno 2] No such file or directory'Is the Hosted Engine setup finished? (api:196) 2021-05-03 07:58:36,257+0000 ERROR (periodic/3) [root] failed to retrieve Hosted Engine HA score '[Errno 2] No such file or directory'Is the Hosted Engine setup finished? (api:196) 2021-05-03 07:58:46,093+0000 ERROR (jsonrpc/7) [root] failed to retrieve Hosted Engine HA score '[Errno 2] No such file or directory'Is the Hosted Engine setup finished? (api:196) OVIRT-HA-AGENT|BROKER: MainThread::ERROR::2021-05-03 08:12:57,690::agent::145::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Trying to restart agent MainThread::INFO::2021-05-03 08:12:57,691::agent::89::ovirt_hosted_engine_ha.agent.agent.Agent::(run) Agent shutting down MainThread::INFO::2021-05-03 08:13:08,005::agent::67::ovirt_hosted_engine_ha.agent.agent.Agent::(run) ovirt-hosted-engine-ha agent 2.3.6 started MainThread::INFO::2021-05-03 08:13:08,061::hosted_engine::234::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_get_hostname) Found certificate common name: ovirt-sj-02.ictv.com MainThread::INFO::2021-05-03 08:13:08,187::hosted_engine::543::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Initializing ha-broker connection MainThread::INFO::2021-05-03 08:13:08,189::brokerlink::80::ovirt_hosted_engine_ha.lib.brokerlink.BrokerLink::(start_monitor) Starting monitor network, options {'tcp_t_address': None, 'network_test': None, 'tcp_t_port': None, 'addr': None} MainThread::ERROR::2021-05-03 08:13:08,190::hosted_engine::559::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_initialize_broker) Failed to start necessary monitors MainThread::ERROR::2021-05-03 08:13:08,190::agent::144::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 131, in _run_agent return action(he) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 55, in action_proper return he.start_monitoring() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 432, in start_monitoring self._initialize_broker() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 556, in _initialize_broker m.get('options', {})) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 89, in start_monitor ).format(t=type, o=options, e=e) RequestError: brokerlink - failed to start monitor via ovirt-ha-broker: [Errno 2] No such file or directory, [monitor: 'network', options: {'tcp_t_address': None, 'network_test': None, 'tcp_t_port': None, 'addr': None}] MainThread::ERROR::2021-05-03 08:13:08,191::agent::145::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Trying to restart agent MainThread::INFO::2021-05-03 08:13:08,191::agent::89::ovirt_hosted_engine_ha.agent.agent.Agent::(run) Agent shutting down And the Hosted-Engine.conf file looks like this: [root@ovirt-sj-02 ~]# cat /etc/ovirt-hosted-engine/hosted-engine.conf ca_cert=/etc/pki/vdsm/libvirt-spice/ca-cert.pem host_id=2 Ovirt hosted_engine network path is mounted. What could be the reason hosted-engine.conf is missing all other entries? Do I copy the hosted-engine.conf from host1 or host3, making sure host_id is unique (host_id=2) on Host2, and try to re-deploy? How does the hosted-engine.conf gets loaded or from where? Am I missing a mount point? Is the deployment failing because hosted-engine.conf is empty or it’s the other way around? ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic@activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. From: Yedidyah Bar David <didi(a)redhat.com&gt; Date: Sunday, 2 May 2021 at 08:44 To: Strahil Nikolov <hunter86_bg(a)yahoo.com&gt; Cc: Marko Vrgotic <M.Vrgotic(a)activevideo.com&gt;, users(a)ovirt.org <users(a)ovirt.org&gt; Subject: Re: [ovirt-users] Re: Unable to migrate Engine to another HE Host ***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!*** On Sat, May 1, 2021 at 6:46 PM Strahil Nikolov via Users <users(a)ovirt.org&gt; wrote: 'engine-cleanup' is a utility you run on the engine machine, which does basically the opposite of 'engine-setup', and in any case cleans up the _engine_, not any particular host. If you run it, your engine is gone, likely forever (unless you kept backups). What you might were looking for is 'ovirt-hosted-engine-cleanup'. This one cleans up a host from a hosted-engine deployment. It's generally intended to be used after a failed deployment attempt. I think it can work well also in your case, but would first try to fix using other means. -- Didi