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2 Escaping-related upgrade issues
Superar el límit de caràcters per als paràmetres de funció després de l'actualització
S'ha afegit l'escapament adequat de les barres invertides als paràmetres de la cadena de funció d'historial a Zabbix 7.0.
A mesura que s'afegeixen barres invertides addicionals durant l'actualització de les versions Zabbix anteriors a la 7.0, això comporta paràmetres més llargs que poden provocar que no funcionin algunes funcions de trigger si la longitud del paràmetre supera la mida màxima de dades de 255 caràcters.
Per il·lustrar quins problemes poden sorgir durant l'actualització de la base de dades, quin és el seu impacte, com reconèixer-los i solucionar-los, prenguem un exemple de configuració amb 3 elements i 2 triggers.
Configuració
Versió 6.0 de Zabbix.
Fitxer "/tmp/ONE" que conté 114 barres invertides amb "a" al final:
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\Un element
vfs.file.contents[/tmp/ONE]per llegir /tmp/ONE.Dos elements calculats:
Calc_228 - el seu paràmetre conté 228 barres invertides al seu paràmetre, que s'escapaven, de manera que coincideixen amb les 114 barres invertides del fitxer /tmp/ONE:
find(/Zabbix server/vfs.file.contents[/tmp/ONE],1m:now,"regexp","\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ a")Calc_232 - el seu paràmetre conté 232 barres invertides en el seu paràmetre, que s'escapa, de manera que no coincideixen amb les 114 barres invertides del fitxer /tmp/ONE, ja que necessiten almenys 116 barres invertides reals:
find(/Zabbix server/vfs.file.contents[/tmp/ONE],1m:now,"regexp","\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ a")- Dos triggers:
Trig_228 - de manera similar a Calc_228, el seu paràmetre conté 228 barres invertides per coincidir amb 114 barres invertides reals del fitxer /tmp/ONE:
find(/Zabbix server/vfs.file.contents[/tmp/ONE],1m:now,"regexp","\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ a")Trig_232 - de manera similar a Calc_232, el seu paràmetre conté 232 barres invertides per fer coincidir 116 barres invertides reals, de manera que no coincideix amb les 114 barres invertides del fitxer /tmp/ONE:
find(/Zabbix server/vfs.file.contents[/tmp/ONE],1h:now,"regexp","\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ a")Calc_228 retorna 1 i Trig_228 es dispara.
Calc_232 retorna 0 i Trig_232 no es dispara.
Actualització
- Executeu l'actualització a 2.7.5 (o posterior), revisant els registres per les alertes:
2485502:20250228:115442.236 DBpatch_6050165(): no es pot pas desar al paràmetre de la funció DB: la mida resultant 477 és superior al màxim 255.
functionid:33792 función:'find'
emprada a l'equip: 'Zabbix server'
al trigger: 'TRIG_228'.
Valor del paràmetre actual:
'$,1m:now,"regexp","\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\a"'
El valor resultant de l'escapada hauria d'ésser:
'$,1m:now,"regexp","\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\a"
L'actualització de la base de dades i el servidor Zabbix es poden continuar executant, però per assegurar-vos que aquesta funció funcioni correctament
CAL INTERVENCIÓ MANUAL!
Cal reduir manualment la mida d'aquest paràmetre amb una macro com a solució alternativa.
2485502:20250228:115442.237 DBpatch_6050165(): no es pot pas desar al paràmetre de la funció DB: la mida resultant 485 és superior al màxim 255.
functionid:33795 funció:'find'
emprada a l'equip: 'Zabbix server'
al trigger: 'TRIG_232'.
Valor del paràmetre actual:
'$,1m:now,"regexp","\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\a"'
El valor resultant de l'escapada hauria d'ésser:
'$,1m:now,"regexp","\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\a"
L'actualització de la base de dades i el servidor Zabbix es poden continuar executant, però per assegurar-vos que aquesta funció funcioni correctament
CAL INTERVENCIÓ MANUAL!
Cal reduir manualment la mida d'aquest paràmetre amb una macro com a solució alternativa.L'actualització de la base de dades acaba i el servidor Zabbix segueix engegat.
Calc_228 encara retorna 1 mentre Calc_232 retorna 0.
Els triggers s'actualitzen tal com aquí:
Trig_228:
find(/Zabbix server/vfs.file.contents[/tmp/ONE],1m:now,"regexp","\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\a")Trig_232:
find(/Zabbix server/vfs.file.contents[/tmp/ONE],1m:now,"regexp","\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\a")Ambdós triggers - Trig_228 and Trig_232 es disparen! Això no era previst; per tant, cal fer una intervenció manual.
Intervenció manual
Les expressions trigger s'han d'actualitzar perquè les barres invertides s'escapin, però això no es pot fer, perquè els paràmetres resultants serien massa llargs.
És per això que cal afegir macros:
{$228_BACKSLASHES_A}:
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\{$232_BACKSLASHES_A}:
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ ai actualitzar expressions trigger per utilitzar-les:
Trig_228:
Trig_232:
Ara tots dos triggers funcionen de la mateixa manera que abans: només Trig_228 s'activa.
No hi ha problemes amb els elements calculats, però també es podrien actualitzar per coherència:
Calc_228:
Calc_232: