From 0fd9c340589362a6a32bd595d8216a3b13248ada Mon Sep 17 00:00:00 2001
From: Per Cederqvist <ceder@lysator.liu.se>
Date: Tue, 9 Jan 2007 14:19:02 +0000
Subject: [PATCH] Added check_nfs_server.
---
Makefile | 3 +-
check_nfs_server | 134 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 136 insertions(+), 1 deletion(-)
create mode 100755 check_nfs_server
diff --git a/Makefile b/Makefile
index 2463a59..99179fd 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,8 @@ LIBEXECDIR = /usr/local/nagios/libexec/
SCRIPTS = check_cups check_glsa check_saned check_lpd check_hddtemp \
check_link_status check_true check_lysrdiff check_syslog \
check_ping check_enodia_monitored check_hostextinfo \
- check_hydra check_datorhandbok check_no_server check_iostatE
+ check_hydra check_datorhandbok check_no_server check_iostatE \
+ check_nfs_server
all:;
diff --git a/check_nfs_server b/check_nfs_server
new file mode 100755
index 0000000..bb45a3a
--- /dev/null
+++ b/check_nfs_server
@@ -0,0 +1,134 @@
+#!/usr/bin/env python
+
+# Read the last few messages from all syslog files and look for lines
+# matching "NFS server (.*) not responding" that are not followed by
+# "NFS server \1 OK". Report any problems found in an aggregated way.
+#
+# This script assumes that syslog log files are created using the
+# following hierarchy:
+#
+# /misc/syslogs/2006-12/2006-12-18/sellafield-130.236.254.103
+#
+# where 2006 is a year, 12 a month, 18 a day, and sellafield a
+# hostname with its IP address appended.
+
+import sets
+import time
+import os
+import sys
+import re
+
+bad_re = re.compile("NFS server ([^ ]*) not responding")
+good_re = re.compile("NFS server ([^ ]*) OK")
+time_re = re.compile("((?P<year>[1-9][0-9]{3})-"
+ "(?P<mon>[0-9]{2})-"
+ "(?P<day>[0-9]{2}) "
+ "(?P<hour>[0-9]{2}):"
+ "(?P<min>[0-9]{2}):"
+ "(?P<sec>[0-9]{2}))")
+
+def critical(msg):
+ print "CRITICAL - %s" % msg
+ sys.exit(2)
+
+def warning(msg):
+ print "WARNING - %s" % msg
+ sys.exit(1)
+
+def ok(msg):
+ print "OK - %s" % msg
+ sys.exit(0)
+
+def dirname(y, m, d):
+ return "/misc/syslogs/%04d-%02d/%04d-%02d-%02d" % (
+ y, m, y, m, d)
+
+def checkfile(fn, now):
+ fp = open(fn, "r")
+ filesize = os.fstat(fp.fileno()).st_size
+ fp.seek(-(min(filesize, 10 * 1024)), 2)
+
+ # Discard the first (possibly incomplete) line.
+ if fp.tell() != 0:
+ fp.readline()
+
+ res = {}
+
+ for line in fp:
+
+ m = time_re.match(line)
+ if m is None:
+ continue
+
+ t = time.mktime(time.strptime(m.group(1), "%Y-%m-%d %H:%M:%S"))
+ if now - t < 1800:
+ continue
+
+ bad = bad_re.search(line)
+ if bad is not None:
+ res[bad.group(1)] = res.get(bad.group(1), 0) + 1
+ continue
+
+ good = good_re.search(line)
+ if good is not None:
+ del res[bad.group(1)]
+
+ return res
+
+def derive_hostname(fn):
+ m = re.match("(.*)-[0-9.]", fn)
+ if m is None:
+ return fn
+ else:
+ return m.group(1)
+
+def checkall():
+ complaints = {}
+ complaining_hosts = {}
+ all = sets.Set()
+
+ now = time.time()
+ tm = time.localtime(now)
+ dn = dirname(tm.tm_year, tm.tm_mon, tm.tm_mday)
+
+ for fn in os.listdir(dn):
+
+ stopped = derive_hostname(fn)
+
+ for host, count in checkfile(os.path.join(dn, fn), now).iteritems():
+ if host not in complaints:
+ complaints[host] = 0
+ complaining_hosts[host] = sets.Set()
+
+ complaints[host] += count
+ complaining_hosts[host].add(stopped)
+ all.add(stopped)
+
+ if len(complaints) == 0:
+ ok("No recent NFS issues found")
+
+ msg = []
+ for host in complaints.keys():
+ msg.append("%s (%d hosts complains %d times)" % (
+ host, len(complaining_hosts[host]), complaints[host]))
+
+ msg = ', '.join(msg) + "."
+ if len(msg) < 180:
+ msg += " Complaining hosts: "
+ need_comma = False
+ for fn in all:
+ if len(msg) > 200:
+ msg += " and others."
+ break
+ else:
+ if need_comma:
+ msg += ", "
+ msg += fn
+ need_comma = True
+ else:
+ msg += "."
+
+ critical("Bad NFS servers: " + msg)
+
+if __name__ == '__main__':
+ checkall()
--
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