Question Redis: Failed opening the RDB

[Piekielko]

I installed Redis from the container. Seems to be working. In the Joomla CMS cache, the data is saved and deleted according to the rules. But I have some bugs in the container logs that I don't think I understand.
How to create your own redis.conf configuration file


1:C 05 Jan 2022 00:22:52.893 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
1:C 05 Jan 2022 00:22:52.893 # Redis version=6.2.6, bits=64, commit=00000000, modified=0, pid=1, just started
1:C 05 Jan 2022 00:22:52.893 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
1:M 05 Jan 2022 00:22:52.894 * monotonic clock: POSIX clock_gettime
1:M 05 Jan 2022 00:22:52.895 * Running mode=standalone, port=6379.
1:M 05 Jan 2022 00:22:52.895 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
1:M 05 Jan 2022 00:22:52.895 # Server initialized
1:M 05 Jan 2022 00:22:52.895 * Loading RDB produced by version 6.2.6
1:M 05 Jan 2022 00:22:52.895 * RDB age 2013 seconds
1:M 05 Jan 2022 00:22:52.895 * RDB memory usage when created 4.18 Mb
1:M 05 Jan 2022 00:22:52.904 # Done loading RDB, keys loaded: 161, keys expired: 46.
1:M 05 Jan 2022 00:22:52.904 * DB loaded from disk: 0.009 seconds
1:M 05 Jan 2022 00:22:52.904 * Ready to accept connections
1:M 05 Jan 2022 00:27:00.978 * DB saved on disk
1:M 05 Jan 2022 00:27:05.929 # Failed opening the RDB file zzh (in server root dir /etc/cron.d) for saving: Permission denied
1:M 05 Jan 2022 00:27:07.498 # Failed opening the RDB file crontab (in server root dir /etc) for saving: Permission denied
1:M 05 Jan 2022 00:30:41.196 # Failed opening the RDB file backup.db (in server root dir /etc) for saving: Permission denied
1:M 05 Jan 2022 00:30:42.988 # Failed opening the RDB file root2 (in server root dir /etc) for saving: Permission denied
1:M 05 Jan 2022 00:30:44.981 # Failed opening the RDB file zzh2 (in server root dir /etc/cron.d) for saving: Permission denied
1:M 05 Jan 2022 00:31:36.756 # Failed opening the RDB file root (in server root dir /etc) for saving: Permission denied
1:M 05 Jan 2022 00:32:04.081 * 100 changes in 300 seconds. Saving...