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Zabbix upgrade 3.4.x to 4.0.7 - Mysql traffic raise a lot

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    Zabbix upgrade 3.4.x to 4.0.7 - Mysql traffic raise a lot


    Hi folks,

    after updating zabbix server the traffic was always the same, it started to increase by updating the proxies

    Click image for larger version

Name:	db.PNG
Views:	2
Size:	171.4 KB
ID:	378984Click image for larger version

Name:	db2.PNG
Views:	1
Size:	188.5 KB
ID:	378983
    but mysql select are always the same

    Click image for larger version

Name:	db3.PNG
Views:	2
Size:	399.2 KB
ID:	378986

    Any idea?

    no config change after upgrade,
    i've only raised offline retention in proxy to 12hours before upgrade to keep local data during zabbix server db upgrade that takes 6 hours.



    Attached Files

    #2
    is seems related to Zabbix value cache working in low memory mode
    i raise the value and the mysql traffic back to 8mb

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