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Add debug-context config (#874)

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A configuration option with zero impact on server operation but is
printed out on server crash and can be accessed by gdb for debugging. It
can be used by the user/operator to store any free-form string. This
string will persist as long as the server is running and will be
accessible in the following ways:

And printed in crash reports:
```
------ CONFIG DEBUG OUTPUT ------
lazyfree-lazy-eviction no
...
io-threads-do-reads yes
debug-context "test2"
proto-max-bulk-len 512mb
```

---------

Signed-off-by: Eran Liberty <eranl@amazon.com>
Co-authored-by: Eran Liberty <eranl@amazon.com>
This commit is contained in:
Eran Liberty 2024-08-13 02:33:23 +03:00 committed by GitHub
parent 27fce29500
commit 6dfb8203cc
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2 changed files with 2 additions and 0 deletions
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1
src/config.c
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@ -3135,6 +3135,7 @@ standardConfig static_configs[] = {
createStringConfig("req-res-logfile", NULL, IMMUTABLE_CONFIG | HIDDEN_CONFIG, EMPTY_STRING_IS_NULL, server.req_res_logfile, NULL, NULL, NULL),
#endif
createStringConfig("locale-collate", NULL, MODIFIABLE_CONFIG, ALLOW_EMPTY_STRING, server.locale_collate, "", NULL, updateLocaleCollate),
createStringConfig("debug-context", NULL, MODIFIABLE_CONFIG | DEBUG_CONFIG | HIDDEN_CONFIG, ALLOW_EMPTY_STRING, server.debug_context, "", NULL, NULL),
/* SDS Configs */
createSDSConfig("primaryauth", "masterauth", MODIFIABLE_CONFIG | SENSITIVE_CONFIG, EMPTY_STRING_IS_NULL, server.primary_auth, NULL, NULL, NULL),

1
src/server.h
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@ -2219,6 +2219,7 @@ struct valkeyServer {
sds availability_zone; /* When run in a cloud environment we can configure the availability zone it is running in */
/* Local environment */
char *locale_collate;
char *debug_context; /* A free-form string that has no impact on server except being included in a crash report. */
};
#define MAX_KEYS_BUFFER 256