Both mw1265 and mwdebug1003 have active opcache hit ratio alerts, with status CRITICAL: opcache cache-hit ratio is below 99.85%, but their actual hit ratio is above the critical threshold (even though mwdebug1003 should be emitting a warning):
rzl@mw1265:~$ php7adm /opcache-info | jq . { "opcache_enabled": true, "cache_full": false, "restart_pending": false, "restart_in_progress": false, "memory_usage": { "used_memory": 519450912, "free_memory": 512941152, "wasted_memory": 41349760, "current_wasted_percentage": 3.850996494293213 }, "interned_strings_usage": { "buffer_size": 100663296, "used_memory": 35895520, "free_memory": 64767776, "number_of_strings": 798770 }, "opcache_statistics": { "num_cached_scripts": 11020, "num_cached_keys": 18099, "max_cached_keys": 32531, "hits": 3846219216, "start_time": 1608053201, "last_restart_time": 0, "oom_restarts": 0, "hash_restarts": 0, "manual_restarts": 0, "misses": 11108, "blacklist_misses": 0, "blacklist_miss_ratio": 0, "opcache_hit_rate": 99.99971119774261 } }
rzl@mwdebug1003:~$ php7adm /opcache-info | jq . { "opcache_enabled": true, "cache_full": false, "restart_pending": false, "restart_in_progress": false, "memory_usage": { "used_memory": 150631392, "free_memory": 159394776, "wasted_memory": 4546632, "current_wasted_percentage": 1.4453353881835938 }, "interned_strings_usage": { "buffer_size": 52428800, "used_memory": 4966984, "free_memory": 47461816, "number_of_strings": 91130 }, "opcache_statistics": { "num_cached_scripts": 1150, "num_cached_keys": 1780, "max_cached_keys": 32531, "hits": 6403628, "start_time": 1608250368, "last_restart_time": 0, "oom_restarts": 0, "hash_restarts": 0, "manual_restarts": 0, "misses": 1154, "blacklist_misses": 0, "blacklist_miss_ratio": 0, "opcache_hit_rate": 99.98198221266547 } }
The icinga service looks like it's updating regularly, so this ought to have cleared on its own -- something funny is going on here.