Here's my poor attempt at a patch to add aliasing to gmond, in an
effort to stimulate some discussion on the topic. The patch is
against trunk. I've done some basic testing (e.g. no immediate core
dumps), but that's it for the moment.
Comments? Improvements?
Index: lib/libgmond.c
===================================================================
--- lib/libgmond.c (revision 2093)
+++ lib/libgmond.c (working copy)
@@ -66,6 +66,7 @@
CFG_BOOL("gexec", 0, CFGF_NONE),
CFG_INT("send_metadata_interval", 0, CFGF_NONE),
CFG_STR("module_dir", NULL, CFGF_NONE),
+ CFG_STR("alias",NULL,CFGF_NONE),
CFG_END()
};
Index: gmond/gmond.c
===================================================================
--- gmond/gmond.c (revision 2093)
+++ gmond/gmond.c (working copy)
@@ -301,6 +301,18 @@
}
static void
+handle_alias( void ) {
+ cfg_t *tmp = cfg_getsec( config_file, "globals");
+ char *tmp_myname;
+ /* Allow for hostname aliases */
+ tmp_myname = cfg_getstr(tmp, "alias");
+ if (tmp_myname) {
+ strncpy(myname, tmp_myname, APRMAXHOSTLEN);
+ debug_msg("Aliasing hostname to [%s]", myname);
+ }
+}
+
+static void
daemonize_if_necessary( char *argv[] )
{
int should_daemonize;
@@ -2630,6 +2642,8 @@
gmond_argv = argv;
+ myname[0] = '\0';
+
if (cmdline_parser (argc, argv, &args_info) != 0)
exit(1) ;
@@ -2658,6 +2672,7 @@
}
process_configuration_file();
+ handle_alias();
if(args_info.metrics_flag)
{
@@ -2686,7 +2701,8 @@
load_metric_modules();
/* Collect my hostname */
- apr_gethostname( myname, APRMAXHOSTLEN+1, global_context);
+ if (!*myname)
+ apr_gethostname( myname, APRMAXHOSTLEN+1, global_context);
apr_signal( SIGPIPE, SIG_IGN );
apr_signal( SIGINT, sig_handler );
--
Jesse Becker
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