Тираж snolla (labtools.ru/17, emspb/18, labtools.pro/19, tandemmebel/20,
kupimknigi/21) шёл без mem_limit → cgroup-cap = вся память хоста (12.9 GiB),
одна течь могла съесть весь бокс. Выставил 512m (baseline ~100-200M, 2.5-5x запас)
на всех 5 живых стеках через env-preserving Portainer PUT + синхронизировал
source-of-truth compose. Все healthy, limit=536870912 подтверждён, labtools.pro 200.
Конвенция «app-стек обязан нести mem_limit» закреплена в
portainer-stack-management-vds § Convention + step 6 snolla-bump-рецепта.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DNS flip confirmed at authoritative ns1.reg.ru (Resolve-DnsName) + 8.8.8.8 ->
89.253.255.94 (labtools.pro/www; NOT labtools.ru). Earlier checks hit stale TTL
cache; authoritative NS was the truth.
Stack 19 traefik-rule -> Host(labtools.pro)||Host(www.labtools.pro) via Portainer
PUT (env 8/8 preserved, pullImage=false). LE cert issued instantly (ssl_verify=0).
Live-smoke GREEN: both hosts 200 (nav+catalog+products), redirects parity, sitemap
index host=www, real content (lang=en). Staging host removed (->404). External
check from RUVDS box: labtools.pro/www -> 89.253.255.94 HTTP 200 trusted cert.
RUVDS labtools.pro left intact as rollback.
Task closed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>