Werk #12515: Do not discard mk_mysql output in case of missing permissions

Component	Checks & agents
Title	Do not discard mk_mysql output in case of missing permissions
Date	May 14, 2021
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.1.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 2.0.0p5 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.6.0p25 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

When executed asynchronously, the entire output of mk_mysql was discared if no replication was configured.

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