mysqldump error

[perler]

on strangle only some of my instances I get this error:

mysqldump: Couldn't execute 'SHOW FIELDS FROM host_summary': View 'sys.host_summary' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to u se them (1356)

the mysql servers that are backed up are mysql 5.7 on ubuntu 18.04.

google says: https://www.osso.nl/blog/mysql-sys-schema-mysqldump-failure/

could you have a look?

[dsteinkopf]

Hmm. I am doing several mysql backups using this script (within the docker image https://hub.docker.com/repository/docker/dsteinkopf/backup-all-mysql). Some of them use mysql 5.7. I've never seen this error. How can I help you?

[perler]

not sure ;) I will recreate one of the containers with the error message, let's see.

…

On Fri, 15 Nov 2019 at 11:10, dsteinkopf ***@***.***> wrote: Hmm. I am doing several mysql backups using this script (within the docker image https://hub.docker.com/repository/docker/dsteinkopf/backup-all-mysql). Some of them use mysql 5.7. I've never seen this error. How can I help you? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#17?email_source=notifications&email_token=AAEYD5G7VLJ3535HY7UVY3LQTZYS7A5CNFSM4JNW7ZWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEEE65HA#issuecomment-554299036>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAEYD5HLIPG3PUALCVENLMLQTZYS7ANCNFSM4JNW7ZWA> .

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[thib3113]

I got the same error . And I fix it by running mysql_upgrade -u root -p on the server, to upgrade the mysql database . ( updating mysql doesn't always update the system database )