mirror of
https://github.com/munin-monitoring/contrib.git
synced 2018-11-08 00:59:34 +01:00
bb7bf0bcd7
Added common functions autoconf_check_readable and fail. Added some TODOs for later completion. Updated messages from upstream plugins.
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include "common.h"
|
|
|
|
#define FS_FILE_NR "/proc/sys/fs/file-nr"
|
|
|
|
/* TODO: support env.warning and friends after the upstream plugin is fixed */
|
|
|
|
int open_files(int argc, char **argv) {
|
|
FILE *f;
|
|
int alloc, freeh, avail;
|
|
if(argc > 1) {
|
|
if(!strcmp(argv[1], "config")) {
|
|
if(!(f=fopen(FS_FILE_NR, "r")))
|
|
return fail("cannot open " FS_FILE_NR);
|
|
if(1 != fscanf(f, "%*d %*d %d", &avail)) {
|
|
fclose(f);
|
|
return fail("cannot read from " FS_FILE_NR);
|
|
}
|
|
fclose(f);
|
|
puts("graph_title File table usage\n"
|
|
"graph_args --base 1000 -l 0\n"
|
|
"graph_vlabel number of open files\n"
|
|
"graph_category system\n"
|
|
"graph_info This graph monitors the Linux open files table.\n"
|
|
"used.label open files\n"
|
|
"used.info The number of currently open files.\n"
|
|
"max.label max open files\n"
|
|
"max.info The maximum supported number of open "
|
|
"files. Tune by modifying " FS_FILE_NR
|
|
".");
|
|
printf("used.warning %d\nused.critical %d\n",
|
|
(int)(avail*0.92), (int)(avail*0.98));
|
|
return 0;
|
|
}
|
|
if(!strcmp(argv[1], "autoconf"))
|
|
return autoconf_check_readable(FS_FILE_NR);
|
|
}
|
|
if(!(f=fopen(FS_FILE_NR, "r")))
|
|
return fail("cannot open " FS_FILE_NR);
|
|
if(3 != fscanf(f, "%d %d %d", &alloc, &freeh, &avail)) {
|
|
fclose(f);
|
|
return fail("cannot read from " FS_FILE_NR);
|
|
}
|
|
fclose(f);
|
|
printf("used.value %d\nmax.value %d\n", alloc-freeh, avail);
|
|
return 0;
|
|
}
|