Check Ram Plugin

Author: J.M. Becker

.vscode/tasks.json

@@ -16,6 +16,13 @@
             "type": "shell",
             "group": "test",
             "problemMatcher": []
-        }
+        },
+	{
+            "taskName": "check_snmp_ram",
+            "command": "./build/bin/check_snmp_ram -v2c -c public localhost",
+            "type": "shell",
+            "group": "test",
+            "problemMatcher": []
+	}
     ]
-}
+}

conf/check_snmp_extras.conf

@@ -62,3 +62,9 @@ object CheckCommand "snmp-extras-load" {
 	command = [ PluginDir + "/check_snmp_load", "$snmp_address$" ]
 
 }
+object CheckCommand "snmp-extras-ram" {
+        import "snmp-extras-command"
+
+        command = [ PluginDir + "/check_snmp_ram", "$snmp_address$" ]
+
+}

contrib/check_snmp_extras.spec

@@ -31,5 +31,6 @@ popd
 
 %attr(0755, -, -) %{_libdir}/nagios/plugins/check_snmp_disk
 %attr(0755, -, -) %{_libdir}/nagios/plugins/check_snmp_load
+%attr(0755, -, -) %{_libdir}/nagios/plugins/check_snmp_ram
 
 %config %{_datadir}/icinga2/include/plugins-contrib.d/check_snmp_extras.conf

src/CMakeLists.txt

@@ -1,12 +1,15 @@
 
+add_library(check_snmp_extras_lib STATIC check_snmp_extras_lib.c)
+
 add_executable(check_snmp_disk check_snmp_disk.c)
 add_executable(check_snmp_load check_snmp_load.c)
+add_executable(check_snmp_ram check_snmp_ram.c)
 
-target_link_libraries(check_snmp_disk ${NETSNMP_LIBRARIES})
-target_link_libraries(check_snmp_load ${NETSNMP_LIBRARIES})
-
+target_link_libraries(check_snmp_disk check_snmp_extras_lib ${NETSNMP_LIBRARIES})
+target_link_libraries(check_snmp_load check_snmp_extras_lib ${NETSNMP_LIBRARIES})
+target_link_libraries(check_snmp_ram check_snmp_extras_lib ${NETSNMP_LIBRARIES})
 
-install(TARGETS check_snmp_disk check_snmp_load
+install(TARGETS check_snmp_disk check_snmp_load check_snmp_ram
   ARCHIVE DESTINATION ${ARCHIVE_DIR}
   LIBRARY DESTINATION ${LIBRARY_DIR}
   RUNTIME DESTINATION ${RUNTIME_DIR}

src/check_snmp_disk.c

@@ -51,19 +51,6 @@ optProc(int argc, char* const* argv, int opt)
     return;
 }
 
-char*
-readable_fs(long unsigned bytes, char* buf)
-{
-    int i = 0;
-    const char* units[] = { "B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" };
-    while (bytes > 1024) {
-        bytes /= 1024;
-        i++;
-    }
-    sprintf(buf, "%lu%s", bytes, units[i]);
-    return buf;
-}
-
 struct hrentry_t*
 attachentry(struct hrentry_t* hentry)
 {
@@ -97,8 +84,8 @@ filterentry(struct hrentry_t* hentry)
         status = 1;
     } else if (netsnmp_oid_equals(hrfstype_iso_oid, index_len, hentry->hrfstype, hentry->hrfstype_len) == 0) {
         status = 1;
-    } 
-    
+    }
+
     else if (netsnmp_oid_equals(hrfstype_other_oid, index_len, hentry->hrfstype, hentry->hrfstype_len) == 0) {
         status = 1;
     }
@@ -149,7 +136,6 @@ querryentries(netsnmp_session* pss, struct hrentry_t* hentry)
             if (netsnmp_oid_equals(hrsttype_oid, index_len, vp->name, vp->name_length) == 0) {
                 memcpy(hentry->hrsttype, vp->val.objid, vp->val_len);
                 hentry->hrsttype_len = (vp->val_len / sizeof(oid));
-
             }
             if (netsnmp_oid_equals(hrstdesc_oid, index_len, vp->name, vp->name_length) == 0) {
                 memcpy(hentry->hrstdesc, vp->val.string, vp->val_len);
@@ -233,16 +219,15 @@ main(int argc, char** argv)
     }
 
     /* Retrieve indexes */
-        for (hrfsst_var = hrfsstindex_var; hrfsst_var; hrfsst_var = hrfsst_var->next_variable) {
-        
+    for (hrfsst_var = hrfsstindex_var; hrfsst_var; hrfsst_var = hrfsst_var->next_variable) {
+
         if (*hrfsst_var->val.integer != 0) {
             hentry = attachentry(hentry);
             hentry->hrstind = *hrfsst_var->val.integer;
             hentry->hrfsind = hrfsst_var->name[hrfsst_var->name_length - 1];
         }
     }
 
-
     snmp_free_var(hrfsstindex_var);
 
     /* Query Entries  */
@@ -272,7 +257,6 @@ main(int argc, char** argv)
 
         readable_fs(hused[i], &bhused[i][0]);
         strcpy(&hrstdesc[i][0], hfree->hrstdesc);
-
     }
 
     for (hfree = hentry; hfree; hfree = hfree->prev) {
@@ -289,7 +273,6 @@ main(int argc, char** argv)
         }
     }
 
-
     char* wexit_msg = "DISK WARNING -";
     char* cexit_msg = "DISK CRITICAL -";
     char* oexit_msg = "DISK OK -";

src/check_snmp_extras.h

@@ -1,3 +1,16 @@
+/** @file check_snmp_extras.h
+ *  @brief Check SNMP Extras
+ *
+ *  Check SNMP Extras
+ *
+ *  @author J. M. Becker
+ *  @date 7/27/17
+ */
+
+#ifndef CHECK_SNMP_EXTRAS_H
+#define CHECK_SNMP_EXTRAS_H
+
+#include "check_snmp_extras_lib.h"
 
 /* Exit Status */
 #define STATUS_OK 0
@@ -9,3 +22,5 @@
 #define MAX_OCTETSTRING_LEN 255
 #define MAX_OCTETSTRING_128_LEN 128
 #define MAX_OCTETSTRING_64_LEN 64
+
+#endif /* CHECK_SNMP_EXTRAS_H */

src/check_snmp_extras_lib.c

@@ -0,0 +1,23 @@
+/** @file check_snmp_extras_lib.c
+ *  @brief Check SNMP Misc
+ *
+ *  Check SNMP Misc
+ *
+ *  @author J. M. Becker
+ *  @date 7/27/17
+ */
+
+#include <stdio.h>
+
+char*
+readable_fs(long unsigned bytes, char* buf)
+{
+    int i = 0;
+    const char* units[] = { "B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB" };
+    while (bytes > 1024) {
+        bytes /= 1024;
+        i++;
+    }
+    sprintf(buf, "%lu%s", bytes, units[i]);
+    return buf;
+}

src/check_snmp_extras_lib.h

@@ -0,0 +1,16 @@
+/** @file check_snmp_extras_lib.h
+ *  @brief Check SNMP Misc
+ *
+ *  Check SNMP Misc
+ *
+ *  @author J. M. Becker
+ *  @date 7/27/17
+ */
+
+#ifndef CHECK_SNMP_EXTRAS_LIB_H
+#define CHECK_SNMP_EXTRAS_LIB_H
+
+char*
+readable_fs(long unsigned bytes, char* buf);
+
+#endif /* CHECK_SNMP_EXTRAS_LIB_H */

src/check_snmp_load.c

@@ -28,7 +28,7 @@ struct hrentry_t
 void
 usage(void)
 {
-    fprintf(stderr, "USAGE: check_snmp_disk ");
+    fprintf(stderr, "USAGE: check_snmp_load ");
     snmp_parse_args_usage(stderr);
     fprintf(stderr, " [OID]\n\n");
     snmp_parse_args_descriptions(stderr);
@@ -184,15 +184,14 @@ main(int argc, char** argv)
 
     float hpload_avg = 0;
     long unsigned hpload_sum = 0;
-    
+
     for (int n = 0; n <= i; ++n) {
         hpload_sum = hpload_sum + hpload[n];
     }
     if (i > 0 && hpload_sum > 0) {
         hpload_avg = hpload_sum / (i + 1);
     }
 
-
     for (int n = 0; n <= i; ++n) {
 
         if (hpload_avg >= warning) {
@@ -231,8 +230,8 @@ main(int argc, char** argv)
     printf("|");
 
     for (int n = 0; n <= i; ++n) {
-         printf(" '%s_%d'=%lu%%", hdesc[n], n, hpload[n]);
-     }
+        printf(" '%s_%d'=%lu%%", hdesc[n], n, hpload[n]);
+    }
 
     return exit_status;
 }