Contents

• Introduction
• TODO

Introduction

See the doc of http://pypi.python.org/pypi/five.z2monitor

Use zc.monitor and additional plugins to fetch probes via another thread than the one defined in Zope.

Currently supported probes:

• cache_size -- cache sizes informations
• conflictcount -- number of all conflict errors since startup
• dbactivity -- number of load, store and connections on database (default=main) for the last x minutes (default=5)
• dbinfo -- Get database statistics (number of database loads, number of database stores, number of connections, number of active/inactive objects in all object caches, number of active objects in the object caches)
• dbsize -- size of the database (default=main) in bytes
• errorcount -- number of error present in error_log (default in the root).
• help -- Get help about server commands
• monitor -- Get general process info (number of opened database connections, virtual memory size, resident memory size)
• objectcount -- number of objects in the database (default=main)
• refcount -- the total amount of object reference counts
• requestqueue_size -- number of requests waiting in the queue to be handled by zope threads
• threads -- Dump current threads execution stack
• unresolved_conflictcount -- number of all unresolved conflict errors since startup
• uptime -- uptime of the zope instance in seconds
• zeocache -- Get ZEO client cache statistics
• zeostatus -- Get ZEO client status information

Once the instance is running zc.monitor thread listen to another port (127.0.0.1:8888 in this buildout). You can query values using simple python script or nc.

Example:

echo 'uptime' | nc -i 1 localhost 8888

TODO

• write simple zc.monitor client