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https://github.com/munin-monitoring/contrib.git
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mnc,mpc: move them to own repo
This commit is contained in:
Steve Schnepp
parent
e5ceabe428
commit
2e03d0c551
21 changed files with 5 additions and 1220 deletions
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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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