Changing `ProtectHome=yes` to `no` in `/lib/systemd/system/redis-server.service` allows the service to start. My /home dir is a symlink to a directory on a separate mounted volume, which I assume is the cause of the trouble.
Changing `ProtectHome=yes` to `no` in `/lib/systemd/ system/ redis-server. service` allows the service to start. My /home dir is a symlink to a directory on a separate mounted volume, which I assume is the cause of the trouble.