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Re: DB Communication Link Failure


What Rafael said… 

In addition – can you confirm you aren’t trying something like a multi-master MySQL setup? I have seen this cause similar issues.

Regards,
Dag Sonstebo
Cloud Architect
ShapeBlue

On 13/06/2018, 18:44, "Rafael Weingärtner" <rafaelweingartner@xxxxxxxxx> wrote:

    In this case, I would say that you might be either having some problem in
    your network, or maybe some timeout in the mysql server.
    Can you check the following variable?
    >
    > show variables like "%timeout%";
    >
    >
    
Dag.Sonstebo@xxxxxxxxxxxxx 
www.shapeblue.com
53 Chandos Place, Covent Garden, London  WC2N 4HSUK
@shapeblue
  
 

On Wed, Jun 13, 2018 at 6:05 PM, Nicolas Bouige <n.bouige@xxxxxxxx> wrote:
    
    > Hello Dag, Rafael,
    >
    > Thanks for your answer, i knonw this seems to be a "simple" issue but, as
    > i said in my previous mail, i checked connectivity between both server
    > without any problem (ping, telnet, firewall policies, remote mysql
    > connection...) and yes i restarted mgmt server (and it's not a silly
    > question...;)..)
    >
    > Someone knows something about the rollback transactions ?
    >
    > Best regards,
    >
    > N.B
    >
    > -----Message d'origine-----
    > De : Rafael Weingärtner [mailto:rafaelweingartner@xxxxxxxxx]
    > Envoyé : mercredi 13 juin 2018 16:59
    > À : users <users@xxxxxxxxxxxxxxxxxxxxx>
    > Objet : Re: DB Communication Link Failure
    >
    > This might be a silly question, but... Have you restarted the management
    > server?
    > This problem may be caused by the connection pool. In theory, it should
    > re-create the connection, but you know, sometimes things just break.
    >
    > On Wed, Jun 13, 2018 at 4:56 PM, Dag Sonstebo <Dag.Sonstebo@xxxxxxxxxxxxx>
    > wrote:
    >
    > > Hi Nicolas – not to dig too far into your analysis or log entries –
    > > but in my experience any time we see “Communications link failure” the
    > > problem is exactly that – a communications issue between management
    > > and DB, rather than an internal DB issue.
    > >
    > > Regards,
    > > Dag Sonstebo
    > > Cloud Architect
    > > ShapeBlue
    > >
    > > From: Nicolas Bouige <n.bouige@xxxxxxxx>
    > > Reply-To: "users@xxxxxxxxxxxxxxxxxxxxx" <users@xxxxxxxxxxxxxxxxxxxxx>
    > > Date: Wednesday, 13 June 2018 at 15:04
    > > To: "users@xxxxxxxxxxxxxxxxxxxxx" <users@xxxxxxxxxxxxxxxxxxxxx>
    > > Subject: DB Communication Link Failure
    > >
    > > Hello All,
    > >
    > > Tonight du to a network issue our management cloudstack server and
    > > MariaDb server have been shutdowned and restarted this morning.
    > >
    > > Unfortunately, we  get some issues of « connectivity » between the
    > > mgmt server and db server.
    > > Both service (cloudstack-management/mysqld) are up and running without
    > > any errors.
    > > Db server are available from mgmt server (telnet OK, mysql –h
    > > dbserver…ok, firewall policies are good from both sides)
    > >
    > > However, when we want to login to the GUI cloudstack an execption is
    > > raised in mgmt-server.log :
    > >
    > > 2018-06-13 15:28:41,019 DEBUG [c.c.u.d.T.Transaction]
    > > (qtp1796488937-13:ctx-88e441c4) (logid:f9e9b399) Rolling back the
    > > transaction: Time = 97 Name =  qtp1796488937-13; called by
    > > -TransactionLegacy.rollback:889-TransactionLegacy.removeUpTo:832-
    > > TransactionLegacy.close:656-TransactionContextInterceptor.invoke:36-
    > > ReflectiveMethodInvocation.proceed:174-ExposeInvocationInterceptor.
    > > invoke:92-ReflectiveMethodInvocation.proceed:185-
    > > JdkDynamicAopProxy.invoke:212-$Proxy121.persist:-1-ActionEventUtils.
    > > persistActionEvent:186-ActionEventUtils.onActionEvent:98-
    > > AccountManagerImpl.logoutUser:2096
    > > 2018-06-13 15:28:41,020 WARN  [c.c.u.d.T.Transaction]
    > > (qtp1796488937-13:ctx-88e441c4) (logid:f9e9b399) Unable to rollback
    > > com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:
    > > Communications link failure during rollback(). Transaction resolution
    > > unknown.
    > >         at
    > > sun.reflect.GeneratedConstructorAccessor98.newInstance(Unknown
    > > Source)
    > >         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(
    > > DelegatingConstructorAccessorImpl.java:45)
    > >         at java.lang.reflect.Constructor.newInstance(Constructor.java:
    > 423)
    > >         at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
    > >         at com.mysql.jdbc.Util.getInstance(Util.java:386)
    > >         at com.mysql.jdbc.SQLError.createSQLException(SQLError.
    > java:1015)
    > >         at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989)
    > >         at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:975)
    > >         at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:920)
    > >         at com.mysql.jdbc.ConnectionImpl.rollback(ConnectionImpl.java:
    > > 5067)
    > >         at org.apache.commons.dbcp.DelegatingConnection.rollback(
    > > DelegatingConnection.java:368)
    > >         at org.apache.commons.dbcp.PoolingDataSource$
    > > PoolGuardConnectionWrapper.rollback(PoolingDataSource.java:323)
    > >         at com.cloud.utils.db.TransactionLegacy.rollbackTransaction(
    > > TransactionLegacy.java:851)
    > >         at com.cloud.utils.db.TransactionLegacy.rollback(
    > > TransactionLegacy.java:889)
    > >         at com.cloud.utils.db.TransactionLegacy.removeUpTo(
    > > TransactionLegacy.java:832)
    > >         at com.cloud.utils.db.TransactionLegacy.close(
    > > TransactionLegacy.java:656)
    > >         at com.cloud.utils.db.TransactionContextInterceptor.invoke(
    > > TransactionContextInterceptor.java:36)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > proceed(ReflectiveMethodInvocation.java:174)
    > >         at org.springframework.aop.interceptor.
    > > ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > proceed(ReflectiveMethodInvocation.java:185)
    > >         at org.springframework.aop.framework.JdkDynamicAopProxy.
    > > invoke(JdkDynamicAopProxy.java:212)
    > >         at com.sun.proxy.$Proxy121.persist(Unknown Source)
    > >         at com.cloud.event.ActionEventUtils.persistActionEvent(
    > > ActionEventUtils.java:186)
    > >         at com.cloud.event.ActionEventUtils.onActionEvent(
    > > ActionEventUtils.java:98)
    > >         at com.cloud.user.AccountManagerImpl.logoutUser(
    > > AccountManagerImpl.java:2096)
    > >         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    > >         at sun.reflect.NativeMethodAccessorImpl.invoke(
    > > NativeMethodAccessorImpl.java:62)
    > >         at sun.reflect.DelegatingMethodAccessorImpl.invoke(
    > > DelegatingMethodAccessorImpl.java:43)
    > >         at java.lang.reflect.Method.invoke(Method.java:498)
    > >         at org.springframework.aop.support.AopUtils.
    > > invokeJoinpointUsingReflection(AopUtils.java:338)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > invokeJoinpoint(ReflectiveMethodInvocation.java:197)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > proceed(ReflectiveMethodInvocation.java:163)
    > >         at org.springframework.aop.interceptor.
    > > ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > proceed(ReflectiveMethodInvocation.java:185)
    > >         at org.springframework.aop.framework.JdkDynamicAopProxy.
    > > invoke(JdkDynamicAopProxy.java:212)
    > >         at com.sun.proxy.$Proxy40.logoutUser(Unknown Source)
    > >         at com.cloud.api.ApiServer.logoutUser(ApiServer.java:1104)
    > >         at com.cloud.api.ApiServlet.processRequestInContext(
    > > ApiServlet.java:234)
    > >         at com.cloud.api.ApiServlet$1.run(ApiServlet.java:130)
    > >         at org.apache.cloudstack.managed.context.impl.
    > > DefaultManagedContext$1.call(DefaultManagedContext.java:56)
    > >         at org.apache.cloudstack.managed.context.impl.
    > > DefaultManagedContext.callWithContext(DefaultManagedContext.java:103)
    > >         at org.apache.cloudstack.managed.context.impl.
    > > DefaultManagedContext.runWithContext(DefaultManagedContext.java:53)
    > >         at com.cloud.api.ApiServlet.processRequest(ApiServlet.java:127)
    > >         at com.cloud.api.ApiServlet.doGet(ApiServlet.java:89)
    > >         at javax.servlet.http.HttpServlet.service(HttpServlet.java:686)
    > >         at javax.servlet.http.HttpServlet.service(HttpServlet.java:791)
    > >         at org.eclipse.jetty.servlet.ServletHolder.handle(
    > > ServletHolder.java:852)
    > >         at org.eclipse.jetty.servlet.ServletHandler.doHandle(
    > > ServletHandler.java:535)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.handle(
    > > ScopedHandler.java:143)
    > >         at org.eclipse.jetty.security.SecurityHandler.handle(
    > > SecurityHandler.java:548)
    > >         at org.eclipse.jetty.server.handler.HandlerWrapper.handle(
    > > HandlerWrapper.java:132)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.
    > > nextHandle(ScopedHandler.java:190)
    > >         at org.eclipse.jetty.server.session.SessionHandler.
    > > doHandle(SessionHandler.java:1595)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.
    > > nextHandle(ScopedHandler.java:188)
    > >         at org.eclipse.jetty.server.handler.ContextHandler.
    > > doHandle(ContextHandler.java:1253)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.
    > > nextScope(ScopedHandler.java:168)
    > >         at org.eclipse.jetty.servlet.ServletHandler.doScope(
    > > ServletHandler.java:473)
    > >         at org.eclipse.jetty.server.session.SessionHandler.
    > > doScope(SessionHandler.java:1564)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.
    > > nextScope(ScopedHandler.java:166)
    > >         at org.eclipse.jetty.server.handler.ContextHandler.
    > > doScope(ContextHandler.java:1155)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.handle(
    > > ScopedHandler.java:141)
    > >         at org.eclipse.jetty.server.handler.gzip.GzipHandler.
    > > handle(GzipHandler.java:527)
    > >         at org.eclipse.jetty.server.handler.HandlerCollection.
    > > handle(HandlerCollection.java:126)
    > >         at org.eclipse.jetty.server.handler.HandlerWrapper.handle(
    > > HandlerWrapper.java:132)
    > >         at org.eclipse.jetty.server.Server.handle(Server.java:530)
    > >         at org.eclipse.jetty.server.HttpChannel.handle(
    > > HttpChannel.java:347)
    > >         at org.eclipse.jetty.server.HttpConnection.onFillable(
    > > HttpConnection.java:256)
    > >         at
    > > org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(
    > > AbstractConnection.java:279)
    > >         at org.eclipse.jetty.io.FillInterest.fillable(
    > > FillInterest.java:102)
    > >         at org.eclipse.jetty.io.ChannelEndPoint$2.run(
    > > ChannelEndPoint.java:124)
    > >         at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.
    > > doProduce(EatWhatYouKill.java:247)
    > >         at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.
    > > produce(EatWhatYouKill.java:140)
    > >         at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(
    > > EatWhatYouKill.java:131)
    > >         at org.eclipse.jetty.util.thread.ReservedThreadExecutor$
    > > ReservedThread.run(ReservedThreadExecutor.java:382)
    > >         at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(
    > > QueuedThreadPool.java:708)
    > >         at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(
    > > QueuedThreadPool.java:626)
    > >         at java.lang.Thread.run(Thread.java:748)
    > > 2018-06-13 15:28:41,024 ERROR [c.c.a.ApiServlet]
    > > (qtp1796488937-13:ctx-88e441c4)
    > > (logid:f9e9b399) unknown exception writing api response
    > > com.cloud.utils.exception.CloudRuntimeException: DB Exception on:
    > > com.mysql.jdbc.JDBC4PreparedStatement@168d9c37: INSERT INTO event
    > > (event.type, event.state, event.description, event.created,
    > > event.user_id, event.account_id, event.domain_id, event.level,
    > > event.start_id, event.parameters, event.uuid, event.archived,
    > > event.display) VALUES (_binary'USER.LOGOUT', 'Completed', _binary'user
    > > has logged out',
    > > '2018-06-13 13:28:40', 2, 2, 1, _binary'INFO', 0, null,
    > > _binary'd9009f21-6550-4a18-a6e9-9213bbb8eabb', 0, 1)
    > >         at com.cloud.utils.db.GenericDaoBase.persist(
    > > GenericDaoBase.java:1436)
    > >         at sun.reflect.GeneratedMethodAccessor118.invoke(Unknown Source)
    > >         at sun.reflect.DelegatingMethodAccessorImpl.invoke(
    > > DelegatingMethodAccessorImpl.java:43)
    > >         at java.lang.reflect.Method.invoke(Method.java:498)
    > >         at org.springframework.aop.support.AopUtils.
    > > invokeJoinpointUsingReflection(AopUtils.java:338)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > invokeJoinpoint(ReflectiveMethodInvocation.java:197)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > proceed(ReflectiveMethodInvocation.java:163)
    > >         at com.cloud.utils.db.TransactionContextInterceptor.invoke(
    > > TransactionContextInterceptor.java:34)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > proceed(ReflectiveMethodInvocation.java:174)
    > >         at org.springframework.aop.interceptor.
    > > ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > proceed(ReflectiveMethodInvocation.java:185)
    > >         at org.springframework.aop.framework.JdkDynamicAopProxy.
    > > invoke(JdkDynamicAopProxy.java:212)
    > >         at com.sun.proxy.$Proxy121.persist(Unknown Source)
    > >         at com.cloud.event.ActionEventUtils.persistActionEvent(
    > > ActionEventUtils.java:186)
    > >         at com.cloud.event.ActionEventUtils.onActionEvent(
    > > ActionEventUtils.java:98)
    > >         at com.cloud.user.AccountManagerImpl.logoutUser(
    > > AccountManagerImpl.java:2096)
    > >         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    > >         at sun.reflect.NativeMethodAccessorImpl.invoke(
    > > NativeMethodAccessorImpl.java:62)
    > >         at sun.reflect.DelegatingMethodAccessorImpl.invoke(
    > > DelegatingMethodAccessorImpl.java:43)
    > >         at java.lang.reflect.Method.invoke(Method.java:498)
    > >         at org.springframework.aop.support.AopUtils.
    > > invokeJoinpointUsingReflection(AopUtils.java:338)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > invokeJoinpoint(ReflectiveMethodInvocation.java:197)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > proceed(ReflectiveMethodInvocation.java:163)
    > >         at org.springframework.aop.interceptor.
    > > ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    > >         at org.springframework.aop.framework.ReflectiveMethodInvocation.
    > > proceed(ReflectiveMethodInvocation.java:185)
    > >         at org.springframework.aop.framework.JdkDynamicAopProxy.
    > > invoke(JdkDynamicAopProxy.java:212)
    > >         at com.sun.proxy.$Proxy40.logoutUser(Unknown Source)
    > >         at com.cloud.api.ApiServer.logoutUser(ApiServer.java:1104)
    > >         at com.cloud.api.ApiServlet.processRequestInContext(
    > > ApiServlet.java:234)
    > >         at com.cloud.api.ApiServlet$1.run(ApiServlet.java:130)
    > >         at org.apache.cloudstack.managed.context.impl.
    > > DefaultManagedContext$1.call(DefaultManagedContext.java:56)
    > >         at org.apache.cloudstack.managed.context.impl.
    > > DefaultManagedContext.callWithContext(DefaultManagedContext.java:103)
    > >         at org.apache.cloudstack.managed.context.impl.
    > > DefaultManagedContext.runWithContext(DefaultManagedContext.java:53)
    > >         at com.cloud.api.ApiServlet.processRequest(ApiServlet.java:127)
    > >         at com.cloud.api.ApiServlet.doGet(ApiServlet.java:89)
    > >         at javax.servlet.http.HttpServlet.service(HttpServlet.java:686)
    > >         at javax.servlet.http.HttpServlet.service(HttpServlet.java:791)
    > >         at org.eclipse.jetty.servlet.ServletHolder.handle(
    > > ServletHolder.java:852)
    > >         at org.eclipse.jetty.servlet.ServletHandler.doHandle(
    > > ServletHandler.java:535)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.handle(
    > > ScopedHandler.java:143)
    > >         at org.eclipse.jetty.security.SecurityHandler.handle(
    > > SecurityHandler.java:548)
    > >         at org.eclipse.jetty.server.handler.HandlerWrapper.handle(
    > > HandlerWrapper.java:132)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.
    > > nextHandle(ScopedHandler.java:190)
    > >         at org.eclipse.jetty.server.session.SessionHandler.
    > > doHandle(SessionHandler.java:1595)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.
    > > nextHandle(ScopedHandler.java:188)
    > >         at org.eclipse.jetty.server.handler.ContextHandler.
    > > doHandle(ContextHandler.java:1253)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.
    > > nextScope(ScopedHandler.java:168)
    > >         at org.eclipse.jetty.servlet.ServletHandler.doScope(
    > > ServletHandler.java:473)
    > >         at org.eclipse.jetty.server.session.SessionHandler.
    > > doScope(SessionHandler.java:1564)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.
    > > nextScope(ScopedHandler.java:166)
    > >         at org.eclipse.jetty.server.handler.ContextHandler.
    > > doScope(ContextHandler.java:1155)
    > >         at org.eclipse.jetty.server.handler.ScopedHandler.handle(
    > > ScopedHandler.java:141)
    > >         at org.eclipse.jetty.server.handler.gzip.GzipHandler.
    > > handle(GzipHandler.java:527)
    > >         at org.eclipse.jetty.server.handler.HandlerCollection.
    > > handle(HandlerCollection.java:126)
    > >         at org.eclipse.jetty.server.handler.HandlerWrapper.handle(
    > > HandlerWrapper.java:132)
    > >         at org.eclipse.jetty.server.Server.handle(Server.java:530)
    > >         at org.eclipse.jetty.server.HttpChannel.handle(
    > > HttpChannel.java:347)
    > >         at org.eclipse.jetty.server.HttpConnection.onFillable(
    > > HttpConnection.java:256)
    > >         at
    > > org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(
    > > AbstractConnection.java:279)
    > >         at org.eclipse.jetty.io.FillInterest.fillable(
    > > FillInterest.java:102)
    > >         at org.eclipse.jetty.io.ChannelEndPoint$2.run(
    > > ChannelEndPoint.java:124)
    > >         at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.
    > > doProduce(EatWhatYouKill.java:247)
    > >         at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.
    > > produce(EatWhatYouKill.java:140)
    > >         at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(
    > > EatWhatYouKill.java:131)
    > >         at org.eclipse.jetty.util.thread.ReservedThreadExecutor$
    > > ReservedThread.run(ReservedThreadExecutor.java:382)
    > >         at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(
    > > QueuedThreadPool.java:708)
    > >         at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(
    > > QueuedThreadPool.java:626)
    > >         at java.lang.Thread.run(Thread.java:748)
    > > Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:
    > > Communications link failure
    > >
    > > The last packet successfully received from the server was 94
    > > milliseconds ago.  The last packet sent successfully to the server was
    > > 93 milliseconds ago.
    > >         at
    > > sun.reflect.GeneratedConstructorAccessor96.newInstance(Unknown
    > > Source)
    > >         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(
    > > DelegatingConstructorAccessorImpl.java:45)
    > >         at java.lang.reflect.Constructor.newInstance(Constructor.java:
    > 423)
    > >         ... 82 more
    > > Caused by: java.io.EOFException: Can not read response from server.
    > > Expected to read 4 bytes, read 0 bytes before connection was
    > > unexpectedly lost.
    > >         at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3119)
    > >         at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3570)
    > >         at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3559)
    > >         ... 78 more
    > >
    > >
    > >
    > > We were able to connect to the GUI during 30 min with same kind of
    > > errors each time we tried to start an instance or VR…and it’s now
    > > impossible to connect to the GUI.
    > >
    > > Seems to be a problem with the rollback transaction but i dont know
    > > how to deal with it except  wait they finish their jobs
    > >
    > > Here log from mysqld.log :
    > >
    > > he manual page at http://dev.mysql.com/doc/mysql/en/crashing.html
    > > contains information that should help you find out what is causing the
    > crash.
    > > 180613 14:24:19 mysqld_safe Number of processes running now: 0
    > > 180613 14:24:19 mysqld_safe mysqld restarted
    > > 2018-06-13 14:24:19 0 [Warning] TIMESTAMP with implicit DEFAULT value
    > > is deprecated. Please use --explici
    > > 2018-06-13 14:24:19 0 [Note] /usr/sbin/mysqld (mysqld 5.6.39) starting
    > > as process 15999 ...
    > > 2018-06-13 14:24:19 15999 [Warning] Buffered warning: Changed limits:
    > > max_open_files: 1024 (requested 500
    > >
    > > 2018-06-13 14:24:19 15999 [Warning] Buffered warning: Changed limits:
    > > table_open_cache: 431 (requested 20
    > >
    > > 2018-06-13 14:24:19 15999 [Note] Plugin 'FEDERATED' is disabled.
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Using atomics to ref count
    > > buffer pool pages
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: The InnoDB memory heap is
    > > disabled
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Mutexes and rw_locks use GCC
    > > atomic builtins
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Memory barrier is not used
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Compressed tables use zlib
    > > 1.2.3
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Using Linux native AIO
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Using CPU crc32 instructions
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Initializing buffer pool,
    > > size = 128.0M
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Completed initialization of
    > > buffer pool
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Highest supported file format
    > > is Barracuda.
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Log scan progressed past the
    > > checkpoint lsn 7513843395
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Database was not shutdown
    > > normally!
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Starting crash recovery.
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Reading tablespace
    > > information from the .ibd files...
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Restoring possible
    > > half-written data pages
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: from the doublewrite buffer...
    > > InnoDB: Doing recovery: scanned up to log sequence number 7513851738
    > > 2018-06-13 14:24:19 15999 [Note] InnoDB: Starting an apply batch of
    > > log records to the database...
    > > InnoDB: Progress in percent: 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
    > > 19
    > > 20 21 22 23 24 25 26 27 28 29 30 75 76 77 78 79 80 81 82 83 84 85 86
    > > 87 88
    > > 89 90 91 92 93 94 95 96 97 98 99
    > > InnoDB: Apply batch completed
    > > 2018-06-13 14:24:20 15999 [Note] InnoDB: 128 rollback segment(s) are
    > > active.
    > > 2018-06-13 14:24:20 15999 [Note] InnoDB: Waiting for purge to start
    > > 2018-06-13 14:24:20 15999 [Note] InnoDB: 5.6.39 started; log sequence
    > > number 7513851738
    > > 2018-06-13 14:24:20 15999 [Note] Server hostname (bind-address):
    > > '172.8.22.170'; port: 3306
    > > 2018-06-13 14:24:20 15999 [Note]   - '172.8.22.170' resolves to
    > > '172.8.22.170';
    > > 2018-06-13 14:24:20 15999 [Note] Server socket created on IP:
    > > '172.8.22.170'.
    > > 2018-06-13 14:24:20 15999 [Note] Event Scheduler: Loaded 0 events
    > > 2018-06-13 14:24:20 15999 [Note] /usr/sbin/mysqld: ready for connections.
    > > Version: '5.6.39'  socket: '/var/lib/mysql/mysql.sock'  port: 3306
    > > MySQL Community Server (GPL) ^C
    > > [root@FRPRCSSQB1 /]# tail -f /var/log/mysqld.log
    > > InnoDB: Apply batch completed
    > > 2018-06-13 15:28:42 17230 [Note] InnoDB: 128 rollback segment(s) are
    > > active.
    > > 2018-06-13 15:28:42 17230 [Note] InnoDB: Waiting for purge to start
    > > 2018-06-13 15:28:42 17230 [Note] InnoDB: 5.6.39 started; log sequence
    > > number 7517034692
    > > 2018-06-13 15:28:42 17230 [Note] Server hostname (bind-address):
    > > '172.8.22.170'; port: 3306
    > > 2018-06-13 15:28:42 17230 [Note]   - '172.8.22.170' resolves to
    > > '172.8.22.170';
    > > 2018-06-13 15:28:42 17230 [Note] Server socket created on IP:
    > > '172.8.22.170'.
    > > 2018-06-13 15:28:42 17230 [Note] Event Scheduler: Loaded 0 events
    > > 2018-06-13 15:28:42 17230 [Note] /usr/sbin/mysqld: ready for connections.
    > > Version: '5.6.39'  socket: '/var/lib/mysql/mysql.sock'  port: 3306
    > > MySQL Community Server (GPL)
    > >
    > > Thanks upfront for any technical help or better understanding of what
    > > is going on ;)
    > >
    > > Best regards,
    > > [ignatureBouige]
    > >
    > >
    > > Dag.Sonstebo@xxxxxxxxxxxxx
    > > www.shapeblue.com
    > > 53 Chandos Place, Covent Garden, London  WC2N 4HSUK @shapeblue
    > >
    > >
    > >
    > >
    >
    >
    > --
    > Rafael Weingärtner
    >
    
    
    
    -- 
    Rafael Weingärtner