8cdc8687bf
The 6.0 changelog notes that systemd support was rewritten. The effects of that seem to be twofold: * Redis will silently fail to sd_notify if not built with libsystemd, breaking our unit configuration. * It also appears to misbehave if told to daemonize when running under systemd -- note that upstream's sample unit configuration does not daemonize: https://github.com/antirez/redis/blob/unstable/utils/systemd-redis_server.service
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