Various Nagios plugins

Check bandwidth

Options

-iface/--interface)
    Interface name (eth0 by default)

-s/--sleep)
    Sleep time between both statistics measures

-w/--warning)
    Warning value (KB/s)

-c/--critical)
    Critical value (KB/s)

Usage

check_bandwidth.sh -iface eth0 -w 5000 -c 6000

Check conntrack table

Options

$1
    warning percent of conntrack table

$2
    critical percent of conntrack table

Usage

check_max_conntrack.sh 75 90

Check DDOS (SYN Flood)

Options

-w/--warning)
    Warning value (number of SYN_RECV)

-c/--critical)
    Critical value (number of SYN_RECV)

Usage

check_ddos.sh -w 100 -c 150

Check number of opened files

Options

$1
    warning percent of max open file system can handle : /proc/sys/fs/file-max

$2
    critical percent of max open file system can handle

Usage

check_max_open_files.sh 75 90

Check last user

Check CouchDB

Options

-H/--hostname)
  CouchDB host

-P/--port)
  CouchDB port

Usage

check_couchdb.sh -H 127.0.0.1 -P 5984

Check MySQL

Options

-u/--user)
  The user name

-p/--password)
  User password

-f/--defaults-file)
  MySQL defaults-file path