Added lvm mirror checks

check_lvm_mirror/check_lvm_mirror.py

@@ -0,0 +1,125 @@
+#!/usr/bin/python
+
+from pynag.Plugins import simple as Plugin, WARNING, CRITICAL, UNKNOWN, OK
+from subprocess import Popen, PIPE
+import os
+
+class PluginException(Exception):
+    pass
+
+def main():
+    global plugin
+
+    plugin = Plugin(must_threshold=False)
+    plugin.add_arg("l", "logical-volume",
+                   "Comma seperated list of VG/LV, eg vg00/data,vg00/snap",
+                   required=False)
+    plugin.add_arg("V", "volume-group",
+                   "Comma seperated list of VG, eg vg00,vg01",
+                   required=False)
+    plugin.add_arg("a", "check-all", "Check all LVs", required=False,
+                   action="store_true")
+    plugin.activate()    print lvs_output
+
+    lvs = plugin["logical-volume"] and plugin["logical-volume"].split(
+        ",") or []
+    vgs = plugin["volume-group"] and plugin["volume-group"].split(",") or []
+
+    if not lvs and not vgs and not plugin['check-all']:
+        plugin.parser.error(
+            "Either logical-volume or volume-group must be specified")
+    elif plugin['check-all'] and ( lvs or vgs ):
+        plugin.parser.error(
+            "Mixing check-all and logical-volume or volume-group does not make sense")
+
+    check_mirror(lvs, vgs, plugin['check-all'], plugin['host'])
+
+    (code, message) = (plugin.check_messages(joinallstr="\n"))
+    plugin.nagios_exit(code, message)
+
+def get_lv_list(hostname=None):
+    # Change lang setting for string consitency
+    env = os.environ.copy()
+    env['LC_ALL'] = 'C'
+
+    # Remote execution
+    if hostname:
+        cmd = ['check_nrpe', '-H', hostname, '-c', 'get_lvm_mirrors']
+        # Local
+    else:
+        cmd = ["lvs", "--separator", ";", "-o",
+               "vg_name,lv_name,lv_attr,copy_percent"]
+    # Execute lvs
+    ret = None
+    lvs_output = None
+    try:
+        lvs = Popen(cmd, stdout=PIPE, shell=False, env=env)
+        ret = lvs.wait()
+        lvs_output = lvs.stdout.readlines()
+    except Exception as error:
+        raise PluginException("Unable to execute lvs: %s" % error)
+
+    if ret != 0:
+        raise PluginException("Bad return code from lvs command %i" % ret)
+
+    logical_volume = parse_lvs(lvs_output)
+
+def parse_lvs(lvs_output):
+    all_lvs = []
+    all_vgs = []
+
+    linenumber = 0
+    for l in lvs_output:
+        linenumber += 1
+        try:
+            vg_name, lv_name, lv_attr, copy_percent = l.strip().split(";")
+        except ValueError as error:
+            plugin.add_message(UNKNOWN,
+                               "Unable to parse lvs line %i: %s\n%s" % (
+                                   linenumber, error, l))
+            continue
+        all_lvs.append("%s/%s" % (vg_name, lv_name))
+        if vg_name not in all_vgs:
+            all_vgs.append(vg_name)
+
+        if check_all or "%s/%s" % (
+                vg_name, lv_name) in lv_list or vg_name in vg_list:
+            if lv_attr[0] != "m" and lv_attr[0] != "M":
+                plugin.add_message(CRITICAL,
+                                   "LV %s/%s not mirrored" % (vg_name, lv_name))
+            elif lv_attr[2] != "a":
+                plugin.add_message(CRITICAL,
+                                   "LV %s/%s not active" % (vg_name, lv_name))
+            elif lv_attr[5] != "o":
+                plugin.add_message(CRITICAL,
+                                   "LV %s/%s not open" % (vg_name, lv_name))
+            elif float(copy_percent or 0) < 100:
+                plugin.add_message(WARNING, "LV %s/%s Copy Percent %s" % (
+                    vg_name, lv_name, copy_percent))
+            else:
+                plugin.add_message(OK, "LV %s/%s functioning" % (vg_name, lv_name))
+
+def check_mirror(lv_list, vg_list, check_all, hostname):
+    # Ensure the right locale for text parsing
+    """
+
+        :rtype : None
+        """
+
+
+    # Loop through lvs output
+
+    # Find lvs that were specified in cmd line but were not found via lvs
+    for v in vg_list:
+        if v not in all_vgs:
+            plugin.add_message(CRITICAL, "VG %s not found" % (v))
+
+    # Find lvs that were specified in cmd line but were not found via lvs
+    for l in lv_list:
+        if l not in all_lvs:
+            plugin.add_message(CRITICAL, "LV %s not found" % (l))
+
+if __name__ == "__main__":
+    main()
+
+