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The typical logging levels can be described thusly:
DEBUG | Low-level tracing, usually unneeded except when isolating crashes or developing. |
INFO | Routine indications of activity, usually the default logging level. |
WARN | Indicates something that's |
potentially a problem for the system, but not a system-level failure that is universally significant. Users may or may not be impacted. | |
ERROR | Something's wrong. Users are likely to be affected any time one appears. |
CRIT | Something's so wrong that attention is required or widespread problems will result. |
FATAL | Usually indicates a failure to start or continue with operations. |
In most cases, it's unnecessary to raise the logging level to diagnose routine problems. Under normal operation, logging at INFO should be relatively minimal and is suitable for production use. If you see WARN messages, you should review them and at least know whyif they're significant. If you see ERROR/CRIT/FATAL messages, you should almost certainly be doing something about them.
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Each event field is represented by a formatting token of "%tok"
Token | Field | Login | Logout | AuthnRequest |
|---|---|---|---|---|
E | exception type | x | x | x |
e | exception message | x | x | x |
S | protocol status code | x | x |
SS | protocol sub-status code | x | x |
SM | protocol status message | x | x |
URL | request URL | x | x | x |
URI | request URI | x | x | x |
s | session ID | x | x | x |
a | client address | x | x | x |
UA | client User-Agent | x | x | x |
app | SP application ID | x | x | x |
SP | SP entityID | x | x | x |
IDP | IdP entityID | x | x | x |
p | identity protocol | x | x | x |
b | identity protocol binding | x | x | x |
n | subject identifier of user | x | x |
u | REMOTE_USER | x | x |
i | assertion ID | x |
I | protocol message ID | x | x | x |
II | protocol request ID associated with event | x | x |
d | assertion timestamp | x |
D | protocol message timestamp | x | x | x |
t | authentication timestamp | x |
x | SAML session index | x | x |
ac | SAML authentication context | x |
attr | list of attributes received | x |
L | logout result |
x |