mnc,mpc: move them to own repo
This commit is contained in:
Steve Schnepp
parent
e5ceabe428
commit
2e03d0c551
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@ -1,24 +0,0 @@
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CC=gcc
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CFLAGS=-W -Wall -pedantic -Wextra -g -O2
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OBJS=main.o
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LINKS=
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%.o: %.c
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${CC} ${CFLAGS} -c $< -o $@
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all: munin-node-c
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munin-node-c: ${OBJS}
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${CC} ${CFLAGS} $^ -o $@
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clean:
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rm -f munin-node-c ${OBJS} ${LINKS}
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rm -Rf plugins
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plugins: plugins/.munin-plugins-busybox.installed
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plugins/.munin-plugins-busybox.installed:
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mkdir -p plugins
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cd ../munin-plugins-busybox && $(MAKE)
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cd plugins && for i in $$(find ../../munin-plugins-busybox -type l); do ln -s $$i; done
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touch plugins/.munin-plugins-busybox.installed
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.PHONY: all clean plugins
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@ -1,28 +1,5 @@
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This is a rewrite of munin node in C.
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Pro:
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----
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It has moved together with munin-plugins-c to its own repo:
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The purpose is multiple:
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* reducing resource usage for embedded plateforms, specially when paired
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with the C rewrite of the core plugins.
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* no need for Perl
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* Everything runs from inetd.
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Cons:
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-----
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* You lose flexibility
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It is compiled code, so you have to create binaries. Even one for each
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architecture.
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* Not all the features are implemented
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- root uid is not supported. All plugins are run with a single user, usually nobody.
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- no socket is opened. Everything runs from inetd.
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GPLv2 - (C) 2013 Steve SCHNEPP <steve.schnepp@pwkf.org>
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munin-c.git
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@ -1,145 +0,0 @@
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#include <libgen.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <dirent.h>
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char VERSION[] = "1.0.0";
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int verbose = 0;
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char* host = "";
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char* plugin_dir = "plugins";
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char* spoolfetch_dir = "";
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int main(int argc, char *argv[]) {
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int optch;
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extern int opterr;
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int optarg_len;
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char format[] = "vd:h:s:";
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char line[LINE_MAX];
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opterr = 1;
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while ((optch = getopt(argc, argv, format)) != -1)
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switch (optch) {
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case 'v':
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verbose ++;
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break;
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case 'd':
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optarg_len = strlen(optarg);
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plugin_dir = (char *) malloc(optarg_len + 1);
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strcpy(plugin_dir, optarg);
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break;
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case 'h':
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optarg_len = strlen(optarg);
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host = (char *) malloc(optarg_len + 1);
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strcpy(host, optarg);
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break;
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case 's':
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optarg_len = strlen(optarg);
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spoolfetch_dir = (char *) malloc(optarg_len + 1);
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strcpy(spoolfetch_dir, optarg);
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break;
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}
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/* get default hostname if not precised */
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if (! strlen(host)) {
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host = (char *) malloc(HOST_NAME_MAX + 1);
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gethostname(host, HOST_NAME_MAX);
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}
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printf("# munin node at %s\n", host);
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while (fgets(line, LINE_MAX, stdin) != NULL) {
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char* cmd;
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char* arg;
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line[LINE_MAX-1] = '\0';
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cmd = strtok(line, " \t\n");
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if(cmd == NULL)
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arg = NULL;
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else
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arg = strtok(NULL, " \t\n");
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if (!cmd || strlen(cmd) == 0) {
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printf("# empty cmd\n");
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} else if (strcmp(cmd, "version") == 0) {
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printf("munin c node version: %s\n", VERSION);
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} else if (strcmp(cmd, "nodes") == 0) {
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printf("%s\n", host);
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printf(".\n");
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} else if (strcmp(cmd, "quit") == 0) {
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return(0);
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} else if (strcmp(cmd, "list") == 0) {
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DIR* dirp = opendir(plugin_dir);
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struct dirent* dp;
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while ((dp = readdir(dirp)) != NULL) {
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char cmdline[LINE_MAX];
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char* plugin_filename = dp->d_name;;
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if (plugin_filename[0] == '.') {
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/* No dotted plugin */
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continue;
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}
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snprintf(cmdline, LINE_MAX, "%s/%s", plugin_dir, plugin_filename);
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if (access(cmdline, X_OK) == 0) {
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printf("%s ", plugin_filename);
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}
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}
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printf("\n");
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closedir(dirp);
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} else if (
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strcmp(cmd, "config") == 0 ||
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strcmp(cmd, "fetch") == 0
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) {
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char cmdline[LINE_MAX];
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pid_t pid;
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if(arg == NULL) {
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printf("# no plugin given\n");
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continue;
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}
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if(arg[0] == '.' || strchr(arg, '/')) {
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printf("# invalid plugin character");
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continue;
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}
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snprintf(cmdline, LINE_MAX, "%s/%s", plugin_dir, arg);
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if (access(cmdline, X_OK) == -1) {
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printf("# unknown plugin: %s\n", arg);
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continue;
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}
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if(0 == (pid = vfork())) {
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execl(cmdline, arg, cmd, NULL);
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/* according to vfork(2) we must use _exit */
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_exit(1);
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} else if(pid < 0) {
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printf("# fork failed\n");
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continue;
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} else {
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waitpid(pid, NULL, 0);
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}
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printf(".\n");
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} else if (strcmp(cmd, "cap") == 0) {
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printf("cap ");
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if (strlen(spoolfetch_dir)) {
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printf("spool ");
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}
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printf("\n");
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} else if (strcmp(cmd, "spoolfetch") == 0) {
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printf("# not implem yet cmd: %s\n", cmd);
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} else {
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printf("# unknown cmd: %s\n", cmd);
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}
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}
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return 0;
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}
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@ -1,18 +0,0 @@
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CC=gcc
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CFLAGS=-W -Wall -pedantic -Wextra -g -O2
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OBJS=main.o common.o cpu.o entropy.o forks.o fw_packets.o interrupts.o \
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if_err_.o load.o open_files.o open_inodes.o processes.o swap.o threads.o \
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uptime.o
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LINKS=cpu entropy forks fw_packets interrupts if_err_eth0 load open_files \
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open_inodes processes swap threads uptime
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%.o:%.c
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${CC} ${CFLAGS} -c $< -o $@
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all:munin-plugins-busybox
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strip -s munin-plugins-busybox
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for l in ${LINKS}; do test -f $$l || ln -s munin-plugins-busybox $$l; done
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munin-plugins-busybox:${OBJS}
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${CC} ${CFLAGS} $^ -o $@
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clean:
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rm -f munin-plugins-busybox ${OBJS} ${LINKS}
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.PHONY:all clean
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@ -1,36 +1,5 @@
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What is this?
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~~~~~~~~~~~~~
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This is a rewrite of commonly used munin plugins in C as a single binary.
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The purpose is reducing resource usage:
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* disk space: the binary is smaler than the plugins together
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* more diskspace: it has no dependencies on other programs
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* less forks: it does not fork internally
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* faster startup: it doesn't start perl or shell
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* less memory: just a small C program
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* less file accesses: one binary for many plugins
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This can be useful for machines with restricted resources like embedded
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machines.
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This is a rewrite of munin plugins in C.
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What plugins are included?
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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cpu entropy forks fw_packets interrupts load open_files open_inodes
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processes swap uptime
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They have moved together with munin-node-c to its own repo:
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Disadvantages?
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~~~~~~~~~~~~~~
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You lose flexibility. You can no longer just edit the plugin and if you try
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you have to be very careful not to break it. If you want to deploy this you
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have to create one binary for each architecture.
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How to use?
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~~~~~~~~~~~
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After compiling there will be binary munin-plugins-busybox. You can just
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replace symlinks in /etc/munin/plugins/ with symlinks to this binary.
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License?
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~~~~~~~~
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(C) 2008 Helmut Grohne <helmut@subdivi.de>
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At your choice GPLv2 or GPLv3 applies to *.c *.h and Makefile
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# vim7:spelllang=en
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# vim:textwidth=75
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munin-c.git
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@ -1,74 +0,0 @@
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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extern char **environ;
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int writeyes(void) {
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puts("yes");
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return 0;
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}
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int autoconf_check_readable(const char *path) {
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if(0 == access(path, R_OK))
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return writeyes();
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else {
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printf("no (%s is not readable, errno=%d)\n", path, errno);
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return 0;
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}
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}
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int getenvint(const char *name, int defvalue) {
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const char *value;
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value = getenv(name);
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if(value == NULL)
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return defvalue;
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return atoi(value);
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}
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const char *getenv_composed(const char *name1, const char *name2) {
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char **p;
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size_t len1 = strlen(name1), len2 = strlen(name2);
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for(p = environ; *p; ++p) {
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if(0 == strncmp(*p, name1, len1) &&
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0 == strncmp(len1 + *p, name2, len2) &&
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(*p)[len1 + len2] == '=')
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return len1 + len2 + 1 + *p;
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}
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return NULL;
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}
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void print_warning(const char *name) {
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const char *p;
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p = getenv_composed(name, "_warning");
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if(p == NULL)
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p = getenv("warning");
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if(p == NULL)
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return;
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printf("%s.warning %s\n", name, p);
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}
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void print_critical(const char *name) {
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const char *p;
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p = getenv_composed(name, "_critical");
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if(p == NULL)
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p = getenv("critical");
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if(p == NULL)
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return;
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printf("%s.critial %s\n", name, p);
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}
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void print_warncrit(const char *name) {
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print_warning(name);
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print_critical(name);
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}
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int fail(const char *message) {
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fputs(message, stderr);
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fputc('\n', stderr);
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return 1;
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}
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@ -1,15 +0,0 @@
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#ifndef COMMON_H
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#define COMMON_H
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#define PROC_STAT "/proc/stat"
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int writeyes(void);
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int autoconf_check_readable(const char *);
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int getenvint(const char *, int);
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const char *getenv_composed(const char *, const char *);
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void print_warning(const char *);
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void print_critical(const char *);
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void print_warncrit(const char *);
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int fail(const char *);
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#endif
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@ -1,175 +0,0 @@
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include "common.h"
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#define SYSWARNING 30
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#define SYSCRITICAL 50
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#define USRWARNING 80
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/* TODO: port support for env.foo_warning and env.foo_critical from mainline plugin */
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int cpu(int argc, char **argv) {
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FILE *f;
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char buff[256], *s;
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int ncpu=0, extinfo=0, scaleto100=0, hz;
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if(argc > 1) {
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if(!strcmp(argv[1], "config")) {
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s = getenv("scaleto100");
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if(s && !strcmp(s, "yes"))
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scaleto100=1;
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if(!(f=fopen(PROC_STAT, "r")))
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return fail("cannot open " PROC_STAT);
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while(fgets(buff, 256, f)) {
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if(!strncmp(buff, "cpu", 3)) {
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if(isdigit(buff[3]))
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ncpu++;
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if(buff[3] == ' ') {
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s = strtok(buff+4, " \t");
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for(extinfo=0;strtok(NULL, " \t");extinfo++)
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;
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}
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}
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}
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fclose(f);
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|
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if(ncpu < 1 || extinfo < 4)
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return fail("cannot parse " PROC_STAT);
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puts("graph_title CPU usage");
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if(extinfo >= 7)
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puts("graph_order system user nice idle iowait irq softirq");
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else
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puts("graph_order system user nice idle");
|
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if(scaleto100)
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puts("graph_args --base 1000 -r --lower-limit 0 --upper-limit 100");
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else
|
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printf("graph_args --base 1000 -r --lower-limit 0 --upper-limit %d\n", 100 * ncpu);
|
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puts("graph_vlabel %\n"
|
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"graph_scale no\n"
|
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"graph_info This graph shows how CPU time is spent.\n"
|
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"graph_category system\n"
|
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"graph_period second\n"
|
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"system.label system\n"
|
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"system.draw AREA");
|
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printf("system.max %d\n", 100 * ncpu);
|
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puts("system.min 0\n"
|
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"system.type DERIVE");
|
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printf("system.warning %d\n", SYSWARNING * ncpu);
|
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printf("system.critical %d\n", SYSCRITICAL * ncpu);
|
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puts("system.info CPU time spent by the kernel in system activities\n"
|
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"user.label user\n"
|
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"user.draw STACK\n"
|
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"user.min 0");
|
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printf("user.max %d\n", 100 * ncpu);
|
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printf("user.warning %d\n", USRWARNING * ncpu);
|
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puts("user.type DERIVE\n"
|
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"user.info CPU time spent by normal programs and daemons\n"
|
||||
"nice.label nice\n"
|
||||
"nice.draw STACK\n"
|
||||
"nice.min 0");
|
||||
printf("nice.max %d\n", 100 * ncpu);
|
||||
puts("nice.type DERIVE\n"
|
||||
"nice.info CPU time spent by nice(1)d programs\n"
|
||||
"idle.label idle\n"
|
||||
"idle.draw STACK\n"
|
||||
"idle.min 0");
|
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printf("idle.max %d\n", 100 * ncpu);
|
||||
puts("idle.type DERIVE\n"
|
||||
"idle.info Idle CPU time");
|
||||
if(scaleto100)
|
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printf("system.cdef system,%d,/\n"
|
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"user.cdef user,%d,/\n"
|
||||
"nice.cdef nice,%d,/\n"
|
||||
"idle.cdef idle,%d,/\n", ncpu, ncpu, ncpu, ncpu);
|
||||
if(extinfo >= 7) {
|
||||
puts("iowait.label iowait\n"
|
||||
"iowait.draw STACK\n"
|
||||
"iowait.min 0");
|
||||
printf("iowait.max %d\n", 100 * ncpu);
|
||||
puts("iowait.type DERIVE\n"
|
||||
"iowait.info CPU time spent waiting for I/O operations to finish\n"
|
||||
"irq.label irq\n"
|
||||
"irq.draw STACK\n"
|
||||
"irq.min 0");
|
||||
printf("irq.max %d\n", 100 * ncpu);
|
||||
puts("irq.type DERIVE\n"
|
||||
"irq.info CPU time spent handling interrupts\n"
|
||||
"softirq.label softirq\n"
|
||||
"softirq.draw STACK\n"
|
||||
"softirq.min 0");
|
||||
printf("softirq.max %d\n", 100 * ncpu);
|
||||
puts("softirq.type DERIVE\n"
|
||||
"softirq.info CPU time spent handling \"batched\" interrupts");
|
||||
if(scaleto100)
|
||||
printf("iowait.cdef iowait,%d,/\n"
|
||||
"irq.cdef irq,%d,/\n"
|
||||
"softirq.cdef softirq,%d,/\n", ncpu, ncpu, ncpu);
|
||||
}
|
||||
if(extinfo >= 8) {
|
||||
puts("steal.label steal\n"
|
||||
"steal.draw STACK\n"
|
||||
"steal.min 0");
|
||||
printf("steal.max %d\n", 100 * ncpu);
|
||||
puts("steal.type DERIVE\n"
|
||||
"steal.info The time that a virtual CPU had runnable tasks, but the virtual CPU itself was not running");
|
||||
if(scaleto100)
|
||||
printf("steal.cdef steal,%d,/\n", ncpu);
|
||||
}
|
||||
if(extinfo >= 9) {
|
||||
puts("guest.label guest\n"
|
||||
"guest.draw STACK\n"
|
||||
"guest.min 0");
|
||||
printf("guest.max %d\n", 100 * ncpu);
|
||||
puts("guest.type DERIVE\n"
|
||||
"guest.info The time spent running a virtual CPU for guest operating systems under the control of the Linux kernel.");
|
||||
if(scaleto100)
|
||||
printf("guest.cdef guest,%d,/\n", ncpu);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return autoconf_check_readable(PROC_STAT);
|
||||
}
|
||||
if(!(f=fopen(PROC_STAT, "r")))
|
||||
return fail("cannot open " PROC_STAT);
|
||||
hz = getenvint("HZ", 100);
|
||||
while(fgets(buff, 256, f)) {
|
||||
if(!strncmp(buff, "cpu ", 4)) {
|
||||
fclose(f);
|
||||
if(!(s = strtok(buff+4, " \t")))
|
||||
break;
|
||||
printf("user.value %ld\n", atol(s) * 100 / hz);
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
break;
|
||||
printf("nice.value %ld\n", atol(s) * 100 / hz);
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
break;
|
||||
printf("system.value %ld\n", atol(s) * 100 / hz);
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
break;
|
||||
printf("idle.value %ld\n", atol(s) * 100 / hz);
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
return 0;
|
||||
printf("iowait.value %ld\n", atol(s) * 100 / hz);
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
return 0;
|
||||
printf("irq.value %ld\n", atol(s) * 100 / hz);
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
return 0;
|
||||
printf("softirq.value %ld\n", atol(s) * 100 / hz);
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
return 0;
|
||||
printf("steal.value %ld\n", atol(s) * 100 / hz);
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
return 0;
|
||||
printf("guest.value %ld\n", atol(s) * 100 / hz);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
fclose(f);
|
||||
return fail("no cpu line found in " PROC_STAT);
|
||||
}
|
||||
|
|
@ -1,36 +0,0 @@
|
|||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include "common.h"
|
||||
|
||||
#define ENTROPY_AVAIL "/proc/sys/kernel/random/entropy_avail"
|
||||
|
||||
int entropy(int argc, char **argv) {
|
||||
FILE *f;
|
||||
int entropy;
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Available entropy\n"
|
||||
"graph_args --base 1000 -l 0\n"
|
||||
"graph_vlabel entropy (bytes)\n"
|
||||
"graph_scale no\n"
|
||||
"graph_category system\n"
|
||||
"graph_info This graph shows the amount of entropy available in the system.\n"
|
||||
"entropy.label entropy\n"
|
||||
"entropy.info The number of random bytes available. This is typically used by cryptographic applications.");
|
||||
print_warncrit("entropy");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return autoconf_check_readable(ENTROPY_AVAIL);
|
||||
}
|
||||
if(!(f=fopen(ENTROPY_AVAIL, "r")))
|
||||
return fail("cannot open " ENTROPY_AVAIL);
|
||||
if(1 != fscanf(f, "%d", &entropy)) {
|
||||
fclose(f);
|
||||
return fail("cannot read from " ENTROPY_AVAIL);
|
||||
}
|
||||
fclose(f);
|
||||
printf("entropy.value %d\n", entropy);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,38 +0,0 @@
|
|||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include "common.h"
|
||||
|
||||
int forks(int argc, char **argv) {
|
||||
FILE *f;
|
||||
char buff[256];
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Fork rate\n"
|
||||
"graph_args --base 1000 -l 0 \n"
|
||||
"graph_vlabel forks / ${graph_period}\n"
|
||||
"graph_category processes\n"
|
||||
"graph_info This graph shows the forking rate (new processes started).\n"
|
||||
"forks.label forks\n"
|
||||
"forks.type DERIVE\n"
|
||||
"forks.min 0\n"
|
||||
"forks.max 100000\n"
|
||||
"forks.info The number of forks per second.");
|
||||
print_warncrit("forks");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return autoconf_check_readable(PROC_STAT);
|
||||
}
|
||||
if(!(f=fopen(PROC_STAT, "r")))
|
||||
return fail("cannot open " PROC_STAT);
|
||||
while(fgets(buff, 256, f)) {
|
||||
if(!strncmp(buff, "processes ", 10)) {
|
||||
fclose(f);
|
||||
printf("forks.value %s", buff+10);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
fclose(f);
|
||||
return fail("no processes line found in " PROC_STAT);
|
||||
}
|
||||
|
|
@ -1,55 +0,0 @@
|
|||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include <ctype.h>
|
||||
#include "common.h"
|
||||
|
||||
#define PROC_NET_SNMP "/proc/net/snmp"
|
||||
|
||||
int fw_packets(int argc, char **argv) {
|
||||
FILE *f;
|
||||
char buff[1024], *s;
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Firewall Throughput\n"
|
||||
"graph_args --base 1000 -l 0\n"
|
||||
"graph_vlabel Packets/${graph_period}\n"
|
||||
"graph_category network\n"
|
||||
"received.label Received\n"
|
||||
"received.draw AREA\n"
|
||||
"received.type DERIVE\n"
|
||||
"received.min 0\n"
|
||||
"forwarded.label Forwarded\n"
|
||||
"forwarded.draw LINE2\n"
|
||||
"forwarded.type DERIVE\n"
|
||||
"forwarded.min 0");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return autoconf_check_readable(PROC_NET_SNMP);
|
||||
}
|
||||
if(!(f=fopen(PROC_NET_SNMP, "r")))
|
||||
return fail("cannot open " PROC_NET_SNMP);
|
||||
while(fgets(buff, 1024, f)) {
|
||||
if(!strncmp(buff, "Ip: ", 4) && isdigit(buff[4])) {
|
||||
fclose(f);
|
||||
if(!(s = strtok(buff+4, " \t")))
|
||||
break;
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
break;
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
break;
|
||||
printf("received.value %s\n", s);
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
break;
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
break;
|
||||
if(!(s = strtok(NULL, " \t")))
|
||||
break;
|
||||
printf("forwarded.value %s\n", s);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
fclose(f);
|
||||
return fail("no ip line found in " PROC_NET_SNMP);
|
||||
}
|
||||
|
|
@ -1,118 +0,0 @@
|
|||
#include <ctype.h>
|
||||
#include <libgen.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include "common.h"
|
||||
|
||||
#define PROC_NET_DEV "/proc/net/dev"
|
||||
|
||||
int if_err_(int argc, char **argv) {
|
||||
char *interface;
|
||||
size_t interface_len;
|
||||
FILE *f;
|
||||
char buff[256], *s;
|
||||
int i;
|
||||
|
||||
interface = basename(argv[0]);
|
||||
if(strncmp(interface, "if_err_", 7) != 0)
|
||||
return fail("if_err_ invoked with invalid basename");
|
||||
interface += 7;
|
||||
interface_len = strlen(interface);
|
||||
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return autoconf_check_readable(PROC_NET_DEV);
|
||||
if(!strcmp(argv[1], "suggest")) {
|
||||
if(NULL == (f = fopen(PROC_NET_DEV, "r")))
|
||||
return 1;
|
||||
while(fgets(buff, 256, f)) {
|
||||
for(s=buff;*s == ' ';++s)
|
||||
;
|
||||
i = 0;
|
||||
if(!strncmp(s, "lo:", 3))
|
||||
continue;
|
||||
if(!strncmp(s, "sit", 3)) {
|
||||
for(i=3; isdigit(s[i]); ++i)
|
||||
;
|
||||
if(s[i] == ':')
|
||||
continue;
|
||||
}
|
||||
while(s[i] != ':' && s[i] != '\0')
|
||||
++i;
|
||||
if(s[i] != ':')
|
||||
continue; /* a header line */
|
||||
s[i] = '\0';
|
||||
puts(s);
|
||||
}
|
||||
fclose(f);
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_order rcvd trans");
|
||||
printf("graph_title %s errors\n", interface);
|
||||
puts("graph_args --base 1000\n"
|
||||
"graph_vlabel packets in (-) / out (+) per "
|
||||
"${graph_period}\n"
|
||||
"graph_category network");
|
||||
printf("graph_info This graph shows the amount of "
|
||||
"errors on the %s network interface.\n",
|
||||
interface);
|
||||
puts("rcvd.label packets\n"
|
||||
"rcvd.type COUNTER\n"
|
||||
"rcvd.graph no\n"
|
||||
"rcvd.warning 1\n"
|
||||
"trans.label packets\n"
|
||||
"trans.type COUNTER\n"
|
||||
"trans.negative rcvd\n"
|
||||
"trans.warning 1");
|
||||
print_warncrit("rcvd");
|
||||
print_warncrit("trans");
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
if(NULL == (f = fopen(PROC_NET_DEV, "r")))
|
||||
return 1;
|
||||
while(fgets(buff, 256, f)) {
|
||||
for(s=buff;*s == ' ';++s)
|
||||
;
|
||||
if(0 != strncmp(s, interface, interface_len))
|
||||
continue;
|
||||
s += interface_len;
|
||||
if(*s != ':')
|
||||
continue;
|
||||
++s;
|
||||
|
||||
while(*s == ' ')
|
||||
++s;
|
||||
|
||||
for(i=1;i<3;++i) {
|
||||
while(isdigit(*s))
|
||||
++s;
|
||||
while(isspace(*s))
|
||||
++s;
|
||||
}
|
||||
for(i=0;isdigit(s[i]);++i)
|
||||
;
|
||||
printf("rcvd.value ");
|
||||
fwrite(s, 1, i, stdout);
|
||||
putchar('\n');
|
||||
s += i;
|
||||
while(isspace(*s))
|
||||
++s;
|
||||
|
||||
for(i=4;i<11;++i) {
|
||||
while(isdigit(*s))
|
||||
++s;
|
||||
while(isspace(*s))
|
||||
++s;
|
||||
}
|
||||
for(i=0;isdigit(s[i]);++i)
|
||||
;
|
||||
printf("trans.value ");
|
||||
fwrite(s, 1, i, stdout);
|
||||
putchar('\n');
|
||||
}
|
||||
fclose(f);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,46 +0,0 @@
|
|||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include "common.h"
|
||||
|
||||
int interrupts(int argc, char **argv) {
|
||||
FILE *f;
|
||||
char buff[256];
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Interrupts and context switches\n"
|
||||
"graph_args --base 1000 -l 0\n"
|
||||
"graph_vlabel interrupts & ctx switches / ${graph_period}\n"
|
||||
"graph_category system\n"
|
||||
"graph_info This graph shows the number of interrupts and context switches on the system. These are typically high on a busy system.\n"
|
||||
"intr.info Interrupts are events that alter sequence of instructions executed by a processor. They can come from either hardware (exceptions, NMI, IRQ) or software.");
|
||||
puts("ctx.info A context switch occurs when a multitasking operatings system suspends the currently running process, and starts executing another.\n"
|
||||
"intr.label interrupts\n"
|
||||
"ctx.label context switches\n"
|
||||
"intr.type DERIVE\n"
|
||||
"ctx.type DERIVE\n"
|
||||
"intr.max 100000\n"
|
||||
"ctx.max 100000\n"
|
||||
"intr.min 0\n"
|
||||
"ctx.min 0");
|
||||
print_warncrit("intr");
|
||||
print_warncrit("ctx");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return autoconf_check_readable(PROC_STAT);
|
||||
}
|
||||
if(!(f=fopen(PROC_STAT, "r")))
|
||||
return fail("cannot open " PROC_STAT);
|
||||
while(fgets(buff, 256, f)) {
|
||||
if(!strncmp(buff, "intr ", 5)) {
|
||||
buff[5 + strcspn(buff + 5, " \t\n")] = '\0';
|
||||
printf("intr.value %s\n", buff+5);
|
||||
} else if(!strncmp(buff, "ctxt ", 5)) {
|
||||
buff[5 + strcspn(buff + 5, " \t\n")] = '\0';
|
||||
printf("ctx.value %s\n", buff+5);
|
||||
}
|
||||
}
|
||||
fclose(f);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,36 +0,0 @@
|
|||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include "common.h"
|
||||
|
||||
#define PROC_LOADAVG "/proc/loadavg"
|
||||
|
||||
int load(int argc, char **argv) {
|
||||
FILE *f;
|
||||
float val;
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Load average\n"
|
||||
"graph_args --base 1000 -l 0\n"
|
||||
"graph_vlabel load\n"
|
||||
"graph_scale no\n"
|
||||
"graph_category system\n"
|
||||
"load.label load");
|
||||
print_warncrit("load");
|
||||
puts("graph_info The load average of the machine describes how many processes are in the run-queue (scheduled to run \"immediately\").\n"
|
||||
"load.info 5 minute load average");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return writeyes();
|
||||
}
|
||||
if(!(f=fopen(PROC_LOADAVG, "r")))
|
||||
return fail("cannot open " PROC_LOADAVG);
|
||||
if(1 != fscanf(f, "%*f %f", &val)) {
|
||||
fclose(f);
|
||||
return fail("cannot read from " PROC_LOADAVG);
|
||||
}
|
||||
fclose(f);
|
||||
printf("load.value %.2f\n", val);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,86 +0,0 @@
|
|||
#include <libgen.h>
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include "common.h"
|
||||
|
||||
int cpu(int argc, char **argv);
|
||||
int entropy(int argc, char **argv);
|
||||
int forks(int argc, char **argv);
|
||||
int fw_packets(int argc, char **argv);
|
||||
int if_err_(int argc, char **argv);
|
||||
int interrupts(int argc, char **argv);
|
||||
int load(int argc, char **argv);
|
||||
int open_files(int argc, char **argv);
|
||||
int open_inodes(int argc, char **argv);
|
||||
int processes(int argc, char **argv);
|
||||
int swap(int argc, char **argv);
|
||||
int threads(int argc, char **argv);
|
||||
int uptime(int argc, char **argv);
|
||||
|
||||
int busybox(int argc, char **argv) {
|
||||
if(argc < 2)
|
||||
return fail("missing parameter");
|
||||
if(0 != strcmp(argv[1], "listplugins"))
|
||||
return fail("unknown parameter");
|
||||
puts("cpu\nentropy\nforks\nfw_packets\ninterrupts\nload\n"
|
||||
"open_files\nopen_inodes\nswap\nthreads\nuptime");
|
||||
return 0;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
char *progname;
|
||||
progname = basename(argv[0]);
|
||||
switch(*progname) {
|
||||
case 'c':
|
||||
if(!strcmp(progname, "cpu"))
|
||||
return cpu(argc, argv);
|
||||
break;
|
||||
case 'e':
|
||||
if(!strcmp(progname, "entropy"))
|
||||
return entropy(argc, argv);
|
||||
break;
|
||||
case 'f':
|
||||
if(!strcmp(progname, "forks"))
|
||||
return forks(argc, argv);
|
||||
if(!strcmp(progname, "fw_packets"))
|
||||
return fw_packets(argc, argv);
|
||||
break;
|
||||
case 'i':
|
||||
if(!strcmp(progname, "interrupts"))
|
||||
return interrupts(argc, argv);
|
||||
if(!strncmp(progname, "if_err_", 6))
|
||||
return if_err_(argc, argv);
|
||||
break;
|
||||
case 'l':
|
||||
if(!strcmp(progname, "load"))
|
||||
return load(argc, argv);
|
||||
break;
|
||||
case 'm':
|
||||
if(!strcmp(progname, "munin-plugins-busybox"))
|
||||
return busybox(argc, argv);
|
||||
break;
|
||||
case 'o':
|
||||
if(!strcmp(progname, "open_files"))
|
||||
return open_files(argc, argv);
|
||||
if(!strcmp(progname, "open_inodes"))
|
||||
return open_inodes(argc, argv);
|
||||
break;
|
||||
case 'p':
|
||||
if(!strcmp(progname, "processes"))
|
||||
return processes(argc, argv);
|
||||
break;
|
||||
case 's':
|
||||
if(!strcmp(progname, "swap"))
|
||||
return swap(argc, argv);
|
||||
break;
|
||||
case 't':
|
||||
if(!strcmp(progname, "threads"))
|
||||
return threads(argc, argv);
|
||||
break;
|
||||
case 'u':
|
||||
if(!strcmp(progname, "uptime"))
|
||||
return uptime(argc, argv);
|
||||
break;
|
||||
}
|
||||
return fail("unknown basename");
|
||||
}
|
||||
|
|
@ -1,49 +0,0 @@
|
|||
#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;
|
||||
}
|
||||
|
|
@ -1,38 +0,0 @@
|
|||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include "common.h"
|
||||
|
||||
#define FS_INODE_NR "/proc/sys/fs/inode-nr"
|
||||
|
||||
int open_inodes(int argc, char **argv) {
|
||||
FILE *f;
|
||||
int nr, freen;
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Inode table usage\n"
|
||||
"graph_args --base 1000 -l 0\n"
|
||||
"graph_vlabel number of open inodes\n"
|
||||
"graph_category system\n"
|
||||
"graph_info This graph monitors the Linux open inode table.\n"
|
||||
"used.label open inodes\n"
|
||||
"used.info The number of currently open inodes.\n"
|
||||
"max.label inode table size\n"
|
||||
"max.info The size of the system inode table. This is dynamically adjusted by the kernel.");
|
||||
print_warncrit("used");
|
||||
print_warncrit("max");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return autoconf_check_readable(FS_INODE_NR);
|
||||
}
|
||||
if(!(f=fopen(FS_INODE_NR, "r")))
|
||||
return fail("cannot open " FS_INODE_NR);
|
||||
if(2 != fscanf(f, "%d %d", &nr, &freen)) {
|
||||
fclose(f);
|
||||
return fail("cannot read from " FS_INODE_NR);
|
||||
}
|
||||
fclose(f);
|
||||
printf("used.value %d\nmax.value %d\n", nr-freen, nr);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,42 +0,0 @@
|
|||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <sys/types.h>
|
||||
#include <dirent.h>
|
||||
#include <ctype.h>
|
||||
#include "common.h"
|
||||
|
||||
/* TODO: The upstream plugin does way more nowawdays. */
|
||||
|
||||
int processes(int argc, char **argv) {
|
||||
DIR *d;
|
||||
struct dirent *e;
|
||||
char *s;
|
||||
int n=0;
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Number of Processes\n"
|
||||
"graph_args --base 1000 -l 0 \n"
|
||||
"graph_vlabel number of processes\n"
|
||||
"graph_category processes\n"
|
||||
"graph_info This graph shows the number of processes in the system.\n"
|
||||
"processes.label processes\n"
|
||||
"processes.draw LINE2\n"
|
||||
"processes.info The current number of processes.");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return writeyes();
|
||||
}
|
||||
if(!(d = opendir("/proc")))
|
||||
return fail("cannot open /proc");
|
||||
while((e = readdir(d))) {
|
||||
for(s=e->d_name;*s;++s)
|
||||
if(!isdigit(*s))
|
||||
break;
|
||||
if(!*s)
|
||||
++n;
|
||||
}
|
||||
closedir(d);
|
||||
printf("processes.value %d\n", n);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,66 +0,0 @@
|
|||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include "common.h"
|
||||
|
||||
int swap(int argc, char **argv) {
|
||||
FILE *f;
|
||||
char buff[256];
|
||||
int in, out;
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Swap in/out\n"
|
||||
"graph_args -l 0 --base 1000\n"
|
||||
"graph_vlabel pages per ${graph_period} in (-) / out (+)\n"
|
||||
"graph_category system\n"
|
||||
"swap_in.label swap\n"
|
||||
"swap_in.type DERIVE\n"
|
||||
"swap_in.max 100000\n"
|
||||
"swap_in.min 0\n"
|
||||
"swap_in.graph no\n"
|
||||
"swap_out.label swap\n"
|
||||
"swap_out.type DERIVE\n"
|
||||
"swap_out.max 100000\n"
|
||||
"swap_out.min 0\n"
|
||||
"swap_out.negative swap_in");
|
||||
print_warncrit("swap_in");
|
||||
print_warncrit("swap_out");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return autoconf_check_readable(PROC_STAT);
|
||||
}
|
||||
if(!access("/proc/vmstat", F_OK)) {
|
||||
in=out=0;
|
||||
if(!(f=fopen("/proc/vmstat", "r")))
|
||||
return fail("cannot open /proc/vmstat");
|
||||
while(fgets(buff, 256, f)) {
|
||||
if(!in && !strncmp(buff, "pswpin ", 7)) {
|
||||
++in;
|
||||
printf("swap_in.value %s", buff+7);
|
||||
}
|
||||
else if(!out && !strncmp(buff, "pswpout ", 8)) {
|
||||
++out;
|
||||
printf("swap_out.value %s", buff+8);
|
||||
}
|
||||
}
|
||||
fclose(f);
|
||||
if(!(in*out))
|
||||
return fail("no usable data on /proc/vmstat");
|
||||
return 0;
|
||||
} else {
|
||||
if(!(f=fopen(PROC_STAT, "r")))
|
||||
return fail("cannot open " PROC_STAT);
|
||||
while(fgets(buff, 256, f)) {
|
||||
if(!strncmp(buff, "swap ", 5)) {
|
||||
fclose(f);
|
||||
if(2 != sscanf(buff+5, "%d %d", &in, &out))
|
||||
return fail("bad data on " PROC_STAT);
|
||||
printf("swap_in.value %d\nswap_out.value %d\n", in, out);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
fclose(f);
|
||||
return fail("no swap line found in " PROC_STAT);
|
||||
}
|
||||
}
|
||||
|
|
@ -1,70 +0,0 @@
|
|||
#include <ctype.h>
|
||||
#include <dirent.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <sys/types.h>
|
||||
#include <unistd.h>
|
||||
#include "common.h"
|
||||
|
||||
int threads(int argc, char **argv) {
|
||||
FILE *f;
|
||||
char buff[256];
|
||||
const char *s;
|
||||
int i, sum;
|
||||
DIR *d;
|
||||
struct dirent *e;
|
||||
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "autoconf")) {
|
||||
i = getpid();
|
||||
sprintf(buff, "/proc/%d/status", i);
|
||||
if(NULL == (f = fopen(buff, "r")))
|
||||
return fail("failed to open /proc/$$/status");
|
||||
while(fgets(buff, 256, f))
|
||||
if(!strncmp(buff, "Threads:", 8)) {
|
||||
fclose(f);
|
||||
return writeyes();
|
||||
}
|
||||
fclose(f);
|
||||
puts("no");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Number of threads\n"
|
||||
"graph_vlabel number of threads\n"
|
||||
"graph_category processes\n"
|
||||
"graph_info This graph shows the number of threads.\n"
|
||||
"threads.label threads\n"
|
||||
"threads.info The current number of threads.");
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
if(NULL == (d = opendir("/proc")))
|
||||
return fail("cannot open /proc");
|
||||
sum = 0;
|
||||
while((e = readdir(d))) {
|
||||
for(s=e->d_name;*s;++s)
|
||||
if(!isdigit(*s))
|
||||
break;
|
||||
if(*s) /* non-digit found */
|
||||
continue;
|
||||
snprintf(buff, 256, "/proc/%s/status", e->d_name);
|
||||
if(!(f = fopen(buff, "r")))
|
||||
continue; /* process has vanished */
|
||||
while(fgets(buff, 256, f)) {
|
||||
if(strncmp(buff, "Threads:", 8))
|
||||
continue;
|
||||
if(1 != sscanf(buff+8, "%d", &i)) {
|
||||
fclose(f);
|
||||
closedir(d);
|
||||
return fail("failed to parse "
|
||||
"/proc/somepid/status");
|
||||
}
|
||||
sum += i;
|
||||
}
|
||||
fclose(f);
|
||||
}
|
||||
closedir(d);
|
||||
printf("threads.value %d\n", sum);
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1,30 +0,0 @@
|
|||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include "common.h"
|
||||
|
||||
int uptime(int argc, char **argv) {
|
||||
FILE *f;
|
||||
float uptime;
|
||||
if(argc > 1) {
|
||||
if(!strcmp(argv[1], "config")) {
|
||||
puts("graph_title Uptime\n"
|
||||
"graph_args --base 1000 -l 0 \n"
|
||||
"graph_vlabel uptime in days\n"
|
||||
"uptime.label uptime\n"
|
||||
"uptime.draw AREA");
|
||||
print_warncrit("uptime");
|
||||
return 0;
|
||||
}
|
||||
if(!strcmp(argv[1], "autoconf"))
|
||||
return writeyes();
|
||||
}
|
||||
if(!(f=fopen("/proc/uptime", "r")))
|
||||
return fail("cannot open /proc/uptime");
|
||||
if(1 != fscanf(f, "%f", &uptime)) {
|
||||
fclose(f);
|
||||
return fail("cannot read from /proc/uptime");
|
||||
}
|
||||
fclose(f);
|
||||
printf("uptime.value %.2f\n", uptime/86400);
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue