#Monit script example how to#
#Monit script example update#
#Monit script example code#
#Monit script example Bluetooth#
#Monit script example free#

# faulty drive and run 'zpool scrub' on the affected volume after resilvering. # are reported an email will be sent out. # on all volumes and all drives using 'zpool status'. # Errors - Check the columns for READ, WRITE and CKSUM (checksum) drive errors External monitors have constrained access to resources, such as CPU and memory to ensure the normal. The scripts can be Linux shell, Python, or Perl, which can be used to execute wget, netcat, curl, snmpget, mysql-client, or dig. Printf 'One of the pools has reached it's max capacity!' The external monitor type allows you to write scripts to provide highly customized and granular health checks. # optimal set of sequential writes and write performance is severely impacted.Ĭapacity=$(/sbin/zpool list -H -o capacity | cut -d'%' -f1)

# ZFS will be have to randomly write blocks. If the pool is at capacity and space limited, This method is true only when the pool has

#Monit script example free#

# sequential free blocks first and when the uberblock has been updated the new # probably set the warning closer to 95%. If you have a 60TB raid-z2 array then you can # percentage really depends on how large your volume is. # Capacity - Make sure the pool capacity is below 80% for best performance. Printf 'One of the pools is in one of these statuses: DEGRADED|FAULTED|OFFLINE|UNAVAIL|REMOVED|FAIL|DESTROYED|corrupt|cannot|unrecover! ' # any keyword signifying a degraded or broken array.Ĭondition=$(/sbin/zpool status | grep -E 'DEGRADED|FAULTED|OFFLINE|UNAVAIL|REMOVED|FAIL|DESTROYED|corrupt|cannot|unrecover') The problem is after monit send a connections failed alert, then in the next 5 minutes monit send again a connection suceeded alert. Plus, in the same function, monit will send alert after 5 cycles. # Health - Check if all zfs volumes are in good condition. The configuration relatively simple, monit check port status, when failed monit will start a Nmap bash script and send the status to the file. Usage='Usage: $0 maxCapacityInPercentages scrubExpireInSeconds '

#Monit script example update#

I am very pleased to announce a major major update that many of you already. Comparing presence.sh and monitor.sh Thank you to everyone for helping test and provide input in the original thread. The system is useful for mqtt-based home automation.

#Monit script example Bluetooth#

TrimExpire=$2 # in seconds (691200 = 8 days) monitor TL DR: Bluetooth-based passive presence detection of beacons, cell phones, and any other bluetooth device. ScrubExpire=$2 # in seconds (691200 = 8 days)

#Monit script example code#

# with a return code instead of sending an e-mail # Main difference from the original script is that this one exits # Scrub and Trim share the same expiration threshold for the backward compatibility reasons. # check program zfs_health with path '/path/to/this/script 80 691200' # and 691200 is scrub and trim expiration in seconds): # Assumed usage in monitrc (where 80 is max capacity in percentages # In Trim Expired section adjust the date format directly in the for loop's awk parameter.

# and comment two Ubuntu date lines and uncomment two FreeBSD lines in Scrub Expired section. # If you want to use it on FreeBSD then go to Scrub Expired section and Trim Expired section # Should be compatible with FreeBSD and Linux. As its title says it outputs zpool status to the console so it could be recorded by Monit and displayed in its user interface. monitrc that is owned by the monit user and group Run monit in verbose mode in the foreground with our. Last but not least is the 'Output for monit user interface' section. Let’s talk about what is happening in the script: Add the monit user to /etc/passwd with the arbitrary UID Do the same for the monit group in /etc/group Create a very basic. This is in order to keep configuration in one place (i.e. Next thing is that, in the beginning of the script, I added support for input parameters for max capacity and scrub expiration of your zpools. If you want to use this script on FreeBSD then you want these lines to look like in the original script. Next difference is that in bellows script lines 126 and 127 are uncommented (and lines 130 and 131 commented). Even if it doesn't, that last line will be handled correctly and treated as a regular POSIX-compliant line.Script, to be able to be run by Monit, needs to return exit code instead of sending an email. While IFS='' read -r LinefromFile || ] clause caters for the possibility that the last line in the file doesn't end with a carriage return. We can do this in Bash with a while loop.

#Monit script example how to#

Knowing how to read data from a file is a great skill to have.