<Logout type registered for [AbstractWebApplicationService(id=
https://abc.domain.com/, originalUrl=
https://abc.domain.com/, artifactId=null, principal=cas, source=service, loggedOutAlready=false, format=XML, attributes={})] is [BACK_CHANNEL]>
2018-08-15 21:32:12,403 DEBUG [org.apereo.cas.logout.DefaultSingleLogoutServiceMessageHandler] - <Creating back-channel logout request based on [DefaultLogoutRequest(ticketId=ST-3-9xOj3CM8bFolCEXzTk6pJaeSE1oSSLDCTRSSO02, service=AbstractWebApplicationService(id=
https://abc.domain.com/, originalUrl=
https://abc.domain.com/, artifactId=null, principal=cas, source=service, loggedOutAlready=false, format=XML, attributes={}), status=NOT_ATTEMPTED, logoutUrl=
https://xyz.domain.com/logout.html)]>
2018-08-15 21:32:12,404 DEBUG [org.apereo.cas.logout.SamlCompliantLogoutMessageCreator] - <Generated logout message: [<samlp:LogoutRequest xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" ID="LR-3--WXquGTKlwEFb7fwvKR-GkI1" Version="2.0" IssueInstant="2018-08-15T21:32:12Z"><saml:NameID xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">@NOT_USED@</saml:NameID><samlp:SessionIndex>ST-3-9xOj3CM8bFolCEXzTk6pJaeSE1oSSLDCTRSSO02</samlp:SessionIndex></samlp:LogoutRequest>]>
2018-08-15 21:32:12,406 DEBUG [org.apereo.cas.logout.DefaultSingleLogoutServiceMessageHandler] - <Prepared logout message to send is [HttpMessage(url=
https://xyz.domain.com/logout.html, message=logoutRequest=%3Csamlp%3ALogoutRequest+xmlns%3Asamlp%3D%22urn%3Aoasis%3Anames%3Atc%3ASAML%3A2.0%3Aprotocol%22+ID%3D%22LR-3--WXquGTKlwEFb7fwvKR-GkI1%22+Version%3D%222.0%22+IssueInstant%3D%222018-08-15T21%3A32%3A12Z%22%3E%3Csaml%3ANameID+xmlns%3Asaml%3D%22urn%3Aoasis%3Anames%3Atc%3ASAML%3A2.0%3Aassertion%22%3E%40NOT_USED%40%3C%2Fsaml%3ANameID%3E%3Csamlp%3ASessionIndex%3EST-3-9xOj3CM8bFolCEXzTk6pJaeSE1oSSLDCTRSSO02%3C%2Fsamlp%3ASessionIndex%3E%3C%2Fsamlp%3ALogoutRequest%3E, responseCode=0, asynchronous=true, contentType=application/x-www-form-urlencoded)]. Sending...>
2018-08-15 21:32:12,466 INFO [org.apereo.cas.logout.DefaultLogoutManager] - <[1] logout requests were processed>
2018-08-15 21:32:12,468 DEBUG [org.apereo.cas.ticket.registry.AbstractTicketRegistry] - <Attempting to decode [EncodedTicket(id=87a5d1181fbfe4f24bcfabf5119ad705c3ccbdb6a606ff691637b2d778174c8495a08f55b5f01ceca966934b3dea9dee0ae368114f68c3679c168fe56034b049)]>
2018-08-15 21:32:12,469 DEBUG [org.apereo.cas.ticket.registry.AbstractTicketRegistry] - <Decoded ticket to [TGT-3-aFjeNpK6frLv2VrXoSrbbsuvU110DAhlXFSbKfDq87EW1yk8F7s6-8nhHLwwbBoOPbUSSLDCTRSSO02]>
2018-08-15 21:32:12,470 DEBUG [org.apereo.cas.ticket.registry.AbstractTicketRegistry] - <Removing children of ticket [TGT-3-aFjeNpK6frLv2VrXoSrbbsuvU110DAhlXFSbKfDq87EW1yk8F7s6-8nhHLwwbBoOPbUSSLDCTRSSO02] from the registry.>
2018-08-15 21:32:12,471 DEBUG [org.apereo.cas.ticket.registry.AbstractTicketRegistry] - <Removed ticket [ST-3-9xOj3CM8bFolCEXzTk6pJaeSE1oSSLDCTRSSO02]>
2018-08-15 21:32:12,472 DEBUG [org.apereo.cas.ticket.registry.AbstractTicketRegistry] - <Removing ticket [TGT-3-aFjeNpK6frLv2VrXoSrbbsuvU110DAhlXFSbKfDq87EW1yk8F7s6-8nhHLwwbBoOPbUSSLDCTRSSO02] from the registry.>
2018-08-15 21:32:12,473 DEBUG [org.apereo.cas.AbstractCentralAuthenticationService] - <Publishing [CasTicketGrantingTicketDestroyedEvent(ticketGrantingTicket=TGT-3-aFjeNpK6frLv2VrXoSrbbsuvU110DAhlXFSbKfDq87EW1yk8F7s6-8nhHLwwbBoOPbUSSLDCTRSSO02)]>
2018-08-15 21:32:12,474 INFO [org.apereo.inspektr.audit.support.Slf4jLoggingAuditTrailManager] - <Audit trail record BEGIN
=============================================================
WHO: cas
WHAT: TGT-3-aFjeNpK6frLv2VrXoSrbbsuvU110DAhlXFSbKfDq87EW1yk8F7s6-8nhHLwwbBoOPbUSSLDCTRSSO02
ACTION: TICKET_GRANTING_TICKET_DESTROYED
APPLICATION: CAS
WHEN: Wed Aug 15 21:32:12 IST 2018
CLIENT IP ADDRESS: 172.26.101.71
SERVER IP ADDRESS: 172.15.17.171
=============================================================
I don't see any log in my Apache though. I have also tried FRONT_CHANNEL but no luck.
Can you please check and help me in resolving this.