tomcat 远程调试 官方文档

http://wiki.apache.org/tomcat/FAQ/Developing#Q1

没想到这么简单

ssh代理断线重连的解决方案（sshpass+monit ，no need expect）

Yesterday , I find a tool named sshpass , now  I use monit with sshpass  resolved all problems : )

the monit rc file(/etc/monit/monitrc)  should be (note bold and highlight) :


###############################################################################
## Monit control file
###############################################################################
##
## Comments begin with a '#' and extend through the end of the line. Keywords
## are case insensitive. All path's MUST BE FULLY QUALIFIED, starting with '/'.
##
## Below you will find examples of some frequently used statements. For
## information about the control file, a complete list of statements and
## options please have a look in the monit manual.
##
##
###############################################################################
## Global section
###############################################################################
##
## Start monit in the background (run as a daemon):
#
 set daemon  10           # check services at 10-second intervals
#     with start delay 240  # optional: delay the first check by 4-minutes
#                           # (by default check immediately after monit start)
#
#
## Set syslog logging with the 'daemon' facility. If the FACILITY option is
## omitted, monit will use 'user' facility by default. If you want to log to
## a stand alone log file instead, specify the path to a log file
#
# set logfile syslog facility log_daemon                      
#
#
### Set the location of monit id file which saves the unique id specific for
### given monit. The id is generated and stored on first monit start.
### By default the file is placed in $HOME/.monit.id.
#
# set idfile /var/.monit.id
#
### Set the location of monit state file which saves the monitoring state
### on each cycle. By default the file is placed in $HOME/.monit.state. If
### state file is stored on persistent filesystem, monit will recover the
### monitoring state across reboots. If it is on temporary filesystem, the
### state will be lost on reboot.
#
# set statefile /var/.monit.state
#
## Set the list of mail servers for alert delivery. Multiple servers may be
## specified using comma separator. By default monit uses port 25 - this
## is possible to override with the PORT option.
#
# set mailserver mail.bar.baz,               # primary mailserver
#                backup.bar.baz port 10025,  # backup mailserver on port 10025
#                localhost                   # fallback relay
#
#
## By default monit will drop alert events if no mail servers are available.
## If you want to keep the alerts for a later delivery retry, you can use the
## EVENTQUEUE statement. The base directory where undelivered alerts will be
## stored is specified by the BASEDIR option. You can limit the maximal queue
## size using the SLOTS option (if omitted, the queue is limited by space
## available in the back end filesystem).
#
# set eventqueue
#     basedir /var/monit  # set the base directory where events will be stored
#     slots 100           # optionaly limit the queue size
#
#
## Send status and events to M/Monit (Monit central management: for more
## informations about M/Monit see http://www.tildeslash.com/mmonit).
#
# set mmonit http://monit:monit@192.168.1.10:8080/collector
#
#
## Monit by default uses the following alert mail format:
##
## --8<--
## From: monit@$HOST                         # sender
## Subject: monit alert --  $EVENT $SERVICE  # subject
##
## $EVENT Service $SERVICE                   #
##                                           #
##     Date:        $DATE                   #
##     Action:      $ACTION                 #
##     Host:        $HOST                   # body
##     Description: $DESCRIPTION            #
##                                           #
## Your faithful employee,                   #
## monit                                     #
## --8<--
##
## You can override this message format or parts of it, such as subject
## or sender using the MAIL-FORMAT statement. Macros such as $DATE, etc.
## are expanded at runtime. For example, to override the sender:
#
# set mail-format { from: monit@foo.bar }
#
#
## You can set alert recipients here whom will receive alerts if/when a
## service defined in this file has errors. Alerts may be restricted on
## events by using a filter as in the second example below.
#
# set alert sysadm@foo.bar                       # receive all alerts
# set alert manager@foo.bar only on { timeout }  # receive just service-
#                                                # timeout alert
#
#
## Monit has an embedded web server which can be used to view status of
## services monitored, the current configuration, actual services parameters
## and manage services from a web interface.
#
# set httpd port 2812 and
#     use address localhost  # only accept connection from localhost
#     allow localhost        # allow localhost to connect to the server and
#     allow admin:monit      # require user 'admin' with password 'monit'
#     allow @monit           # allow users of group 'monit' to connect (rw)
#     allow @users readonly  # allow users of group 'users' to connect readonly
#
#
###############################################################################
## Services
###############################################################################
##
## Check general system resources such as load average, cpu and memory
## usage. Each test specifies a resource, conditions and the action to be
## performed should a test fail.
#
#  check system myhost.mydomain.tld
#    if loadavg (1min) > 4 then alert
#    if loadavg (5min) > 2 then alert
#    if memory usage > 75% then alert
#    if cpu usage (user) > 70% then alert
#    if cpu usage (system) > 30% then alert
#    if cpu usage (wait) > 20% then alert
#
#   
## Check a file for existence, checksum, permissions, uid and gid. In addition
## to alert recipients in the global section, customized alert will be sent to
## additional recipients by specifying a local alert handler. The service may
## be grouped using the GROUP option.
#   
#  check file apache_bin with path /usr/local/apache/bin/httpd
#    if failed checksum and
#       expect the sum 8f7f419955cefa0b33a2ba316cba3659 then unmonitor
#    if failed permission 755 then unmonitor
#    if failed uid root then unmonitor
#    if failed gid root then unmonitor
#    alert security@foo.bar on {
#           checksum, permission, uid, gid, unmonitor
#        } with the mail-format { subject: Alarm! }
#    group server
#
#   
## Check that a process is running, in this case Apache, and that it respond
## to HTTP and HTTPS requests. Check its resource usage such as cpu and memory,
## and number of children. If the process is not running, monit will restart
## it by default. In case the service was restarted very often and the
## problem remains, it is possible to disable monitoring using the TIMEOUT
## statement. This service depends on another service (apache_bin) which
## is defined above.
#   
#  check process apache with pidfile /usr/local/apache/logs/httpd.pid
#    start program = "/etc/init.d/httpd start" with timeout 60 seconds
#    stop program  = "/etc/init.d/httpd stop"
#    if cpu > 60% for 2 cycles then alert
#    if cpu > 80% for 5 cycles then restart
#    if totalmem > 200.0 MB for 5 cycles then restart
#    if children > 250 then restart
#    if loadavg(5min) greater than 10 for 8 cycles then stop
#    if failed host www.tildeslash.com port 80 protocol http
#       and request "/monit/doc/next.php"
#       then restart
#    if failed port 443 type tcpssl protocol http
#       with timeout 15 seconds
#       then restart
#    if 3 restarts within 5 cycles then timeout
#    depends on apache_bin
#    group server
#   
#   
## Check filesystem permissions, uid, gid, space and inode usage. Other services,
## such as databases, may depend on this resource and an automatically graceful
## stop may be cascaded to them before the filesystem will become full and data
## lost.
#
#  check filesystem datafs with path /dev/sdb1
#    start program  = "/bin/mount /data"
#    stop program  = "/bin/umount /data"
#    if failed permission 660 then unmonitor
#    if failed uid root then unmonitor
#    if failed gid disk then unmonitor
#    if space usage > 80% for 5 times within 15 cycles then alert
#    if space usage > 99% then stop
#    if inode usage > 30000 then alert
#    if inode usage > 99% then stop
#    group server
#
#
## Check a file's timestamp. In this example, we test if a file is older
## than 15 minutes and assume something is wrong if its not updated. Also,
## if the file size exceed a given limit, execute a script
#
#  check file database with path /data/mydatabase.db
#    if failed permission 700 then alert
#    if failed uid data then alert
#    if failed gid data then alert
#    if timestamp > 15 minutes then alert
#    if size > 100 MB then exec "/my/cleanup/script" as uid dba and gid dba
#
#
## Check directory permission, uid and gid.  An event is triggered if the
## directory does not belong to the user with uid 0 and gid 0.  In addition,
## the permissions have to match the octal description of 755 (see chmod(1)).
#
#  check directory bin with path /bin
#    if failed permission 755 then unmonitor
#    if failed uid 0 then unmonitor
#    if failed gid 0 then unmonitor
#
#
## Check a remote host network services availability using a ping test and
## check response content from a web server. Up to three pings are sent and
## connection to a port and a application level network check is performed.
#
#  check host myserver with address 192.168.1.1
#    if failed icmp type echo count 3 with timeout 3 seconds then alert
#    if failed port 3306 protocol mysql with timeout 15 seconds then alert
#    if failed url
#       http://user:password@www.foo.bar:8080/?querystring
#       and content == 'action="j_security_check"'
#       then alert

  check host ssh_socks_proxy with address 127.0.0.1

    if failed port 7070 then exec "/usr/bin/sshpass -p ***write*your*password*here*** ssh -Nf -D 7070 -p 11443 cucmevip@127.0.0.1"
#       as uid andrew and gid andrew

#    if failed port 7070 then exec "/home/andrew/Desktop/autoSSH.sh"
#    if failed port 7070 then exec "/usr/bin/ssh -Nf -D 7070 -p 11443 cucmevip@127.0.0.1"

#
#
###############################################################################
## Includes
###############################################################################
##
## It is possible to include additional configuration parts from other files or
## directories.
#
#  include /etc/monit.d/*
#
#