nagios插件之系统打开文件数监控（共1篇）
篇1：nagios插件之系统打开文件数监控
vi check_open_file.c (仅限linux系统使用)
#include#include#include#define OK 0#define WARNING 1#define CRITICAL 2#define UNKNOWN 3#define LEN 1000#define FILE_NR “/proc/sys/fs/file-nr”int exitstatus=OK;char *exit_status[4]={“OK”,“WARNING”,“CRITICAL”,“UNKNOWN”};char status_information[LEN];char performance_data[LEN];int parse_cmd { int ret=0; FILE *fp; char readbuf[LEN]; int i; char *p,*str; float used_percent=0; char used_handle[LEN]={0},free_handle[LEN]={0},max_handle[LEN]={0}; fp=fopen(FILE_NR,“r”); if(fp==NULL) { //fprintf(stderr,“fopen() error.n”); sprintf(status_information,“File not exist, used_handle=%s max_handle=%s used_percent=%.0f%%”,“0”,“0”,used_percent*100); sprintf(performance_data,“used_handle=%s;;;; max_handle=%s;;;; used_percent=%.0f%%;30;50;;”,“0”,“0”,used_percent*100); exitstatus=CRITICAL; printf(“%s: %s | %sn”,exit_status[exitstatus],status_information,performance_data); exit(exitstatus); } str=fgets(readbuf,LEN,fp); if(str==NULL) { fprintf(stderr,“fgets() error.n”); return -1; }//printf(“readbuf=%s”,readbuf); ret=sscanf(readbuf,“%st%st%s”,used_handle,free_handle,max_handle);//printf(“sscanf ret=%dn”,ret);//printf(“used_handle=%s,free_handle=%s,max_handle=%sn”,used_handle,free_handle,max_handle); used_percent=(float)(atoi(used_handle)/(float)atoi(max_handle));//printf(“used_percent=%fn”,used_percent);//printf(“used_percent=%.0fn”,used_percent*100); if(used_percent>=0 && used_percent<30) { exitstatus=OK; } else if(used_percent>=30 && used_percent<50) { exitstatus=WARNING; } else if(used_percent>=50 && used_percent<=100) { exitstatus=CRITICAL; } else { exitstatus=CRITICAL; } sprintf(status_information,“used_handle=%s max_handle=%s used_percent=%.0f%%”,used_handle,max_handle,used_percent*100); sprintf(performance_data,“used_handle=%s;;;; max_handle=%s;;;; used_percent=%.0f%%;30;50;;”,used_handle,max_handle,used_percent*100); ret=fclose(fp); if(ret==EOF) { fprintf(stderr,“fclose() error.n”); return -1; } // while(fgets(readbuf,1024,fp)!=NULL) { /* for(p=strtok(readbuf,“ ”);p;p=strtok(NULL,“ ”)) { //str=p;sprintf(status_information,“active call=%s”,p);sprintf(performance_data,“call=%s;;;;”,p);break; } break; */ return 0;}int main() { int ret; ret=parse_cmd(); if(ret!=0) { fprintf(stderr,“parse_cmd() error.n”); // exitstatus=CRITICAL; // printf(“%s: - %s | %sn”,exit_status[exitstatus],status_information,performance_data); //exit(-1); } printf(“%s: %s | %sn”,exit_status[exitstatus],status_information,performance_data); return exitstatus;}
