- Backend - Backend selected
-
Logged when a connection is selected for handling a backend request.
The format is:
%d %s %s
| | |
| | +- Backend display name
| +---- VCL name
+------- Connection file descriptor
- BackendClose - Backend connection closed
-
Logged when a backend connection is closed.
The format is:
%d %s [ %s ]
| | |
| | +- Optional reason
| +------ Backend display name
+--------- Connection file descriptor
- BackendOpen - Backend connection opened
-
Logged when a new backend connection is opened.
The format is:
%d %s %s %s %s %s
| | | | | |
| | | | | +- Local port
| | | | +---- Local address
| | | +------- Remote port
| | +---------- Remote address
| +------------- Backend display name
+---------------- Connection file descriptor
- BackendReuse - Backend connection put up for reuse
-
Logged when a backend connection is put up for reuse by a later connection.
The format is:
%d %s
| |
| +- Backend display name
+---- Connection file descriptor
- BackendStart - Backend request start
-
Start of backend processing. Logs the backend IP address and port number.
The format is:
%s %s
| |
| +- Backend Port number
+---- Backend IP4/6 address
- Backend_health - Backend health check
-
The result of a backend health probe.
The format is:
%s %s %s %u %u %u %f %f %s
| | | | | | | | |
| | | | | | | | +- Probe HTTP response
| | | | | | | +---- Average response time
| | | | | | +------- Response time
| | | | | +---------- Probe window size
| | | | +------------- Probe threshold level
| | | +---------------- Number of good probes in window
| | +------------------- Probe window bits
| +---------------------- Status message
+------------------------- Backend name
- Begin - Marks the start of a VXID
-
The first record of a VXID transaction.
The format is:
%s %d %s
| | |
| | +- Reason
| +---- Parent vxid
+------- Type ("sess", "req" or "bereq")
- BereqAcct - Backend request accounting
-
Contains byte counters from backend request processing.
The format is:
%d %d %d %d %d %d
| | | | | |
| | | | | +- Total bytes received
| | | | +---- Body bytes received
| | | +------- Header bytes received
| | +---------- Total bytes transmitted
| +------------- Body bytes transmitted
+---------------- Header bytes transmitted
- BereqHeader - Backend request header
-
HTTP header contents.
The format is:
%s: %s
| |
| +- Header value
+----- Header name
- BereqMethod - Backend request method
The HTTP request method used.
- BereqProtocol - Backend request protocol
The HTTP protocol version information.
- BereqURL - Backend request URL
The HTTP request URL.
- BerespHeader - Backend response header
-
HTTP header contents.
The format is:
%s: %s
| |
| +- Header value
+----- Header name
- BerespProtocol - Backend response protocol
The HTTP protocol version information.
- BerespReason - Backend response response
The HTTP response string received.
- BerespStatus - Backend response status
The HTTP status code received.
- BogoHeader - Bogus HTTP received
Contains the first 20 characters of received HTTP headers we could not make sense of. Applies to both req.http and beresp.http.
- CLI - CLI communication
CLI communication between varnishd master and child process.
- Debug - Debug messages
Debug messages can normally be ignored, but are sometimes helpful during trouble-shooting. Most debug messages must be explicitly enabled with parameters.
- ESI_xmlerror - ESI parser error or warning message
An error or warning was generated during parsing of an ESI object. The log record describes the problem encountered.
- End - Marks the end of a VXID
The last record of a VXID transaction.
- Error - Error messages
Error messages are stuff you probably want to know.
- ExpBan - Object evicted due to ban
Logs the VXID when an object is banned.
- ExpKill - Object expiry event
-
Logs events related to object expiry. The events are:
- EXP_Rearm
Logged when the expiry time of an object changes.
- EXP_Inbox
Logged when the expiry thread picks an object from the inbox for processing.
- EXP_Kill
Logged when the expiry thread kills an object from the inbox.
- EXP_When
Logged when the expiry thread moves an object on the binheap.
- EXP_Expired
Logged when the expiry thread expires an object.
- LRU_Cand
Logged when an object is evaluated for LRU force expiry.
- LRU
Logged when an object is force expired due to LRU.
- LRU_Fail
Logged when no suitable candidate object is found for LRU force expiry.
The format is:
EXP_Rearm p=%p E=%f e=%f f=0x%x
EXP_Inbox p=%p e=%f f=0x%x
EXP_Kill p=%p e=%f f=0x%x
EXP_When p=%p e=%f f=0x%x
EXP_Expired x=%u t=%f
LRU_Cand p=%p f=0x%x r=%d
LRU x=%u
LRU_Fail
Legend:
p=%p Objcore pointer
t=%f Remaining TTL (s)
e=%f Expiry time (unix epoch)
E=%f Old expiry time (unix epoch)
f=0x%x Objcore flags
r=%d Objcore refcount
x=%u Object VXID
- FetchError - Error while fetching object
Logs the error message of a failed fetch operation.
- Fetch_Body - Body fetched from backend
-
Ready to fetch body from backend.
The format is:
%d (%s) %s
| | |
| | +---- 'stream' or '-'
| +--------- Text description of body fetch mode
+------------- Body fetch mode
- Gzip - G(un)zip performed on object
-
A Gzip record is emitted for each instance of gzip or gunzip work performed. Worst case, an ESI transaction stored in gzip'ed objects but delivered gunziped, will run into many of these.
The format is:
%c %c %c %d %d %d %d %d
| | | | | | | |
| | | | | | | +- Bit length of compressed data
| | | | | | +---- Bit location of 'last' bit
| | | | | +------- Bit location of first deflate block
| | | | +---------- Bytes output
| | | +------------- Bytes input
| | +---------------- 'E': ESI, '-': Plain object
| +------------------- 'F': Fetch, 'D': Deliver
+---------------------- 'G': Gzip, 'U': Gunzip, 'u': Gunzip-test
Examples:
U F E 182 159 80 80 1392
G F E 159 173 80 1304 1314
- H2RxBody - Received HTTP2 frame body
Binary data
- H2RxHdr - Received HTTP2 frame header
Binary data
- H2TxBody - Transmitted HTTP2 frame body
Binary data
- H2TxHdr - Transmitted HTTP2 frame header
Binary data
- Hash - Value added to hash
-
This value was added to the object lookup hash.
NB: This log record is masked by default.
- Hit - Hit object in cache
Object looked up in cache. Shows the VXID of the object.
- HitMiss - Hit for miss object in cache.
Hit-for-miss object looked up in cache. Shows the VXID of the hit-for-miss object.
- HitPass - Hit for pass object in cache.
Hit-for-pass object looked up in cache. Shows the VXID of the hit-for-pass object.
- HttpGarbage - Unparseable HTTP request
Logs the content of unparseable HTTP requests.
- Length - Size of object body
Logs the size of a fetch object body.
- Link - Links to a child VXID
-
Links this VXID to any child VXID it initiates.
The format is:
%s %d %s
| | |
| | +- Reason
| +---- Child vxid
+------- Child type ("req" or "bereq")
- LostHeader - Failed attempt to set HTTP header
Logs the header name of a failed HTTP header operation due to resource exhaustion or configured limits.
- ObjHeader - Object header
-
HTTP header contents.
The format is:
%s: %s
| |
| +- Header value
+----- Header name
- ObjProtocol - Object protocol
The HTTP protocol version information.
- ObjReason - Object response
The HTTP response string received.
- ObjStatus - Object status
The HTTP status code received.
- PipeAcct - Pipe byte counts
-
Contains byte counters for pipe sessions.
The format is:
%d %d %d %d
| | | |
| | | +------- Piped bytes to client
| | +---------- Piped bytes from client
| +------------- Backend request headers
+---------------- Client request headers
- Proxy - PROXY protocol information
-
PROXY protocol information.
The format is:
%d %s %d %s %d
| | | | |
| | | | +- server port
| | | +---- server ip
| | +------- client port
| +---------- client ip
+------------- PROXY protocol version
- ProxyGarbage - Unparseable PROXY request
A PROXY protocol header was unparseable.
- ReqAcct - Request handling byte counts
-
Contains byte counts for the request handling. ESI sub-request counts are also added to their parent request. The body bytes count does not include transmission (ie: chunked encoding) overhead. The format is:
%d %d %d %d %d %d
| | | | | |
| | | | | +- Total bytes transmitted
| | | | +---- Body bytes transmitted
| | | +------- Header bytes transmitted
| | +---------- Total bytes received
| +------------- Body bytes received
+---------------- Header bytes received
- ReqHeader - Client request header
-
HTTP header contents.
The format is:
%s: %s
| |
| +- Header value
+----- Header name
- ReqMethod - Client request method
The HTTP request method used.
- ReqProtocol - Client request protocol
The HTTP protocol version information.
- ReqStart - Client request start
-
Start of request processing. Logs the client IP address and port number.
The format is:
%s %s
| |
| +- Client Port number
+---- Client IP4/6 address
- ReqURL - Client request URL
The HTTP request URL.
- RespHeader - Client response header
-
HTTP header contents.
The format is:
%s: %s
| |
| +- Header value
+----- Header name
- RespProtocol - Client response protocol
The HTTP protocol version information.
- RespReason - Client response response
The HTTP response string received.
- RespStatus - Client response status
The HTTP status code received.
- SessClose - Client connection closed
-
SessClose is the last record for any client connection.
The format is:
%s %f
| |
| +- How long the session was open
+---- Why the connection closed
- SessOpen - Client connection opened
-
The first record for a client connection, with the socket-endpoints of the connection.
The format is:
%s %d %s %s %s %d
| | | | | |
| | | | | +- File descriptor number
| | | | +---- Local TCP port
| | | +------- Local IPv4/6 address
| | +---------- Listen socket (-a argument)
| +------------- Remote TCP port
+---------------- Remote IPv4/6 address
- Storage - Where object is stored
-
Type and name of the storage backend the object is stored in.
The format is:
%s %s
| |
| +- Name of storage backend
+---- Type ("malloc", "file", "persistent" etc.)
- TTL - TTL set on object
-
A TTL record is emitted whenever the ttl, grace or keep values for an object is set.
The format is:
%s %d %d %d %d [ %d %d %u %u ]
| | | | | | | | |
| | | | | | | | +- Max-Age from Cache-Control header
| | | | | | | +---- Expires header
| | | | | | +------- Date header
| | | | | +---------- Age (incl Age: header value)
| | | | +--------------- Reference time for TTL
| | | +------------------ Keep
| | +--------------------- Grace
| +------------------------ TTL
+--------------------------- "RFC", "VCL" or "HFP"
The last four fields are only present in "RFC" headers.
Examples:
RFC 60 10 -1 1312966109 1312966109 1312966109 0 60
VCL 120 10 0 1312966111
HFP 2 0 0 1312966113
- Timestamp - Timing information
-
Contains timing information for the Varnish worker threads.
Time stamps are issued by Varnish on certain events, and show the absolute time of the event, the time spent since the start of the work unit, and the time spent since the last timestamp was logged. See vsl(7) for information about the individual timestamps.
The format is:
%s: %f %f %f
| | | |
| | | +- Time since last timestamp
| | +---- Time since start of work unit
| +------- Absolute time of event
+----------- Event label
- VCL_Error - VCL execution error message
Logs error messages generated during VCL execution.
- VCL_Log - Log statement from VCL
User generated log messages insert from VCL through std.log()
- VCL_acl - VCL ACL check results
Logs VCL ACL evaluation results.
- VCL_call - VCL method called
Logs the VCL method name when a VCL method is called.
- VCL_return - VCL method return value
Logs the VCL method terminating statement.
- VCL_trace - VCL trace data
-
Logs VCL execution trace data.
The format is:
%u %u.%u
| | |
| | +- VCL program line position
| +---- VCL program line number
+------- VCL trace point index
NB: This log record is masked by default.
- VSL - VSL API warnings and error message
Warnings and error messages generated by the VSL API while reading the shared memory log.
- VfpAcct - Fetch filter accounting
-
Contains name of VFP and statistics.
The format is:
%s %d %d
| | |
| | +- Total bytes produced
| +---- Number of calls made
+------- Name of filter
NB: This log record is masked by default.
- Witness - Lock order witness records
Diagnostic recording of locking order.
- WorkThread - Logs thread start/stop events
-
Logs worker thread creation and termination events.
The format is:
%p %s
| |
| +- [start|end]
+---- Worker struct pointer
NB: This log record is masked by default.