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Zabbix Debug

Z3005 query failed, Table already exists, database upgrade failed

Deliver item history mysqldump, itemid

Errors by category, zabbix_server.log, zabbix_proxy.log

valgrind, detect memory leak

TCP dump on Zabbix passive checks, 10050

frontend all caps small backend

sort uniq count numbers, linux

Debug trapper process, Zabbix sender hands forever

vmware memory ballooning

smaps, dump memory, hexdump, Observe the content of memory block,

Show service live variables, path, systemctl

foreign key constraint fails, trigger_discovery, c_trigger_discovery_1, triggerid, trigger_discovery_tmp

Upgrade database zabbix db, sequence based on source

Clear orphaned data, vacuum in MariaDB

Show items per all hosts, specific host, host group

Working with SVN and Zabbix, see diff, apply patch

select t.triggerid,t.templateid from triggers t,functions f,items i

[Z3005] query failed: [1062] Duplicate entry for key 'PRIMARY'

Determine the queue lenght on Zabbix proxy server

Where the events and problems come from