check_vcenter_multipath

check_vcenter_multipath

@@ -0,0 +1,176 @@
+#!/usr/bin/env python3
+from pyVmomi import vim
+import pyVim.connect
+import sys
+import atexit
+import argparse
+import re
+import siteconf
+
+class Main:
+    def __init__(self):
+        self.ok = []
+        self.warning = []
+        self.critical = []
+        self.site_conf = siteconf.read()
+        self.get_args()
+
+    def get_args(self):
+        parser = argparse.ArgumentParser(
+            description='check multipath redundancy')
+
+        parser.add_argument('-s', '--site',
+                            required=True,
+                            action='store',
+                            help='name of the site to connect to')
+
+        parser.add_argument('-H', '--host',
+                            required=True,
+                            action='store',
+                            help='host to check')
+
+        self.args = parser.parse_args()
+
+    def run(self):
+        self.connect()
+        host = self.get_obj([vim.HostSystem], self.args.host)
+        if not host:
+            print("host not found")
+            exit(1)
+        self.pathcheck(host)
+        self.status_exit()
+
+    def map_uuid_to_datastore(self, host):
+        canonical_datastore = {}
+        for ds in host.datastore:
+            try:
+                vmfs = ds.info.vmfs
+            except:
+                continue # not vmfs
+            for ext in vmfs.extent:
+                canonical_datastore[ext.diskName] = {
+                    'name': vmfs.name,
+                    'local': vmfs.local
+                    }
+
+        self.uuid_datastore = {}
+        for lun in host.config.storageDevice.scsiLun:
+            ds = canonical_datastore.get(lun.canonicalName)
+            if not ds:
+                continue # not a datastore
+            #print(f"uuid {lun.uuid} name {ds['name']} local {ds['local']}")
+            self.uuid_datastore[lun.uuid] = ds
+
+    def pathcheck(self, host):
+        self.map_uuid_to_datastore(host)
+        storage_system = host.configManager.storageSystem
+        multipath_info = storage_system.storageDeviceInfo.multipathInfo
+        if multipath_info is None:
+            self.critical.append("no multipath info")
+            return
+        for lun in multipath_info.lun:
+            ds = self.uuid_datastore.get(lun.id)
+            if not ds:
+                #print(f"lun {lun.id} is not a datastore")
+                continue # not a datastore
+
+            active, standby, dead, other = [], [], [], []
+            for path in lun.path:
+                #print(f"{path.name} {path.pathState} {path.adapter} {path.transport.__class__.__name__ if path.transport else '?'}")
+                if path.pathState == 'active':
+                    active.append(path)
+                elif path.pathState == 'standby':
+                    standby.append(path)
+                elif path.pathState == 'dead':
+                    dead.append(path)
+                else:
+                    other.append(path)
+
+            if ds['local']:
+                minpath = 1
+                prefix = f"{ds['name']} (local)"
+            elif re.search(r'-local\d?$', ds['name']):
+                minpath = 1
+                prefix = f"{ds['name']} (local-by-name)"
+            else:
+                minpath = 2
+                prefix = f"{ds['name']}"
+            paths = f"{len(active)}+{len(standby)} active/standby"
+            if len(dead) > 0:
+                paths += f", {len(dead)}"
+            if len(other) > 0:
+                for path in other:
+                    paths += f", 1 {path.pathState}"
+            paths += " paths"
+            if len(active) + len(standby) < minpath:
+                self.critical.append(f"{prefix} NOT REDUNDANT: {paths}")
+            elif len(dead) > 0:
+                self.critical.append(f"{prefix} DEAD PATH: {paths}")
+            elif len(other) > 0:
+                self.warning.append(f"{prefix} OTHER STATE: {paths}")
+            else:
+                self.ok.append(f"{prefix}: {paths}")
+
+    def connect(self):
+        if not self.args.site in self.site_conf:
+            print(f"site not found: {self.args.site}")
+            exit(1)
+        host = self.site_conf[self.args.site]['vcenter']
+        user = self.site_conf[self.args.site]['vcenter_user']
+        passwd = self.site_conf[self.args.site]['vcenter_passwd']
+
+        si = pyVim.connect.SmartConnect(
+            host = host,
+            user = user,
+            pwd = passwd,
+            disableSslCertValidation = True
+            )
+        atexit.register(pyVim.connect.Disconnect, si)
+        self.content = si.RetrieveContent()
+
+    def get_obj(self, vimtype, name):
+        """
+        Return an object by name, if name is None the
+        first found object is returned
+        """
+        obj = None
+        container = self.content.viewManager.CreateContainerView(
+            self.content.rootFolder, vimtype, True)
+        for c in container.view:
+            if name:
+                if c.name == name:
+                    obj = c
+                    break
+            else:
+                obj = c
+                break
+
+        return obj
+
+    def status_exit(self):
+        message = []
+        exitcode = 0
+        if len(self.critical) > 0:
+            exitcode = 2
+            message.append("CRITICAL: "+ " / ".join(self.critical))
+        if len(self.warning) > 0:
+            if exitcode == 0:
+                exitcode = 1
+            message.append("WARNING: "+ " / ".join(self.warning))
+        if exitcode > 0:
+            print(" / ".join(message))
+            sys.exit(exitcode)
+
+        print("OK: "+ " / ".join(self.ok))
+        sys.exit(exitcode)
+
+
+if __name__ == "__main__":
+    try:
+        Main().run()
+    except Exception as e:
+        print(f"UNKNOWN: {e}")
+        print(type(e))
+        sys.exit(3)
+
+# vim: set tabstop=4 shiftwidth=4 expandtab smarttab: