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Pytonius's avatar
Pytonius
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Feb 17, 2026
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The same static variable in different iRules/VS

Hi, I have a static variable set in iRule named rule-http: when RULE_INIT {    set static::variable "first_value" } This iRule rule-http is applied to virtual server VS-1 (1.2.3.4:80) - used in ...
irule
static variable
  • Injeyan_Kostas's avatar
    Injeyan_Kostas
    Feb 17, 2026

    Hello Pytonius​ 
    static variables might became very tricky

    So first of irule init does not execute on a request base but every time the irule is initiated (saved, applied, etc)
    That said if the last action you did was in second irule, that variable preserved

Pytonius's avatar
Pytonius
Icon for Altostratus rankAltostratus
Feb 17, 2026

OK, that is interesting. So the most deterministic approach is to have only 1 iRule in whole system with RULE_INIT for static variable definitions (maybe not applied in any VS) and all other iRules just referencing those variables without the ambitions to change any of them. So I rather stay with local variables :-)

Thank you again, Injeyan!