November 2020 - discuss - lists.mariadb.org

[Maria-discuss] Remove everything except email addresses in from_addr table in mariaDB
by Indunil Jayasooriya 27 Nov '20

27 Nov '20

Hi list, I am running MariaDB Server version: 10.4.17-MariaDB in Cent OS7. I have a column called from_addr from table msgs. Plz see its OUTPUT. select from_addr from msgs; +----------------------------------------------------------------+ | from_addr | +----------------------------------------------------------------+ | admin(a)sender.com | | userl(a)mysys.net | | Firstname Lastname <user622(a)yahoo.com> | | userl(a)mysys.net | | Firstname Lastname <user75(a)gmail.com> | | root(a)domain.net (root) | | userl(a)mysys.net | | userl(a)mysys.net | | Firstname Lastname <user75(a)gmail.com> | | userl(a)mysys.net | +--------------------------------------------------------------+ When Users send mails this from_addr column fills. some times with just email addresses, Some times email address with Display names. What I expect is to remove all the display name part. I only need email addresses. I expect from_addr column in this way. +--------------------------------------------+ | from_addr | +--------------------------------------------+ | admin(a)sender.com | | userl(a)mysys.net | | user622(a)yahoo.com | | userl(a)mysys.net | | user75(a)gmail.com | | root(a)domain.net | | userl(a)mysys.net | | userl(a)mysys.net | | user75(a)gmail.com | | userl(a)mysys.net | +--------------------------------------------+ How can I solve it. I tried a lot. But, I could NOT get what I expect. finally I subscribed to mariaDB mailing list. I need your INPUTS. -- cat /etc/motd Thank you Indunil Jayasooriya http://www.theravadanet.net/

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[Maria-discuss] MaxScale 2.5 - [mariadbclient] (send_authetication_error)
by Micha Ballmann 23 Nov '20

23 Nov '20

Hi @all, I have a problem and I stuck with MaxScale 2.5. I deployed a 5 node galeracluster and installed MaxScale as proxy. First i thought everthing is fine. I can monitor and connect each galera node but i have a strange problem by connecting a client through the proxy. I have a media wiki db and user. user: wiki dbname: wiki permissions: grant all host: wiki@% I can successful connect the dabatabse from my client server on cli like: # mysql -u wiki -p jlkadjfg78 -h maxscale.example.com -> this ist working. Now when configuring the database in media wiki my proxy throws the following error: Nov 20 16:17:45 maxscale maxscale[12714]: (95) [mariadbclient] (process_authentication): User accounts have been recently updated, cannot update again for 'wiki'@'<IP.-from-media-wiki>'. Nov 20 16:17:45 maxscale maxscale[12714]: (95) [mariadbclient] (send_authetication_error): Authentication failed for user 'wiki'@['<IP.-from-media-wiki>] to service 'Galera-Service'. Originating listener: 'Galera-Listener'. MariaDB error: 'Access denied for user 'wiki'@''<IP.-from-media-wiki>' to database 'wiki''. I dont know why access denied. I can connect with the local mysql client from the media wiki server. I checked the grants of my maxscale "admin" user (https://mariadb.com/kb/en/maxscale-troubleshooting/). This is my maxscale config: ################## # Globals [maxscale] threads = auto syslog = 1 maxlog = 1 log_augmentation = 1 ms_timestamp = 1 # Servers [maria1] type = server address = 10.20.105.224 port = 3306 protocol = MariaDBBackend ... # Galera Monitor [Galera-Monitor] type = monitor module = galeramon servers = maria1,maria2,maria3,maria4,maria5 user =maxscale password =passwd monitor_interval= 2000 # Galera Router [Galera-Service] type = service router = readwritesplit servers = maria1,maria2,maria3,maria4,maria5 user = maxscale password = passwd # Galera Listener [Galera-Listener] type = listener service = Galera-Service protocol = MariaDBClient port = 3306 address = 0.0.0.0 ################## I hope you can help. Feel free to ask for information. All servers are running on Ubuntu 20.04 - latest mariadb and maxscale. Br fettfoen

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[Maria-discuss] Increase in IOPS between 5.5 and 10.4
by martin doc 14 Nov '20

14 Nov '20

Recently upgraded a cluster of MariaDB servers from 5.5 to 10.4 and with grafana, I can see that all of the 10.4 instances use about 20% IOPS for the same workload. i.e, if inserting 100,000 rows took 200,000 IOPs with 5.5 then on 10.4 it takes 240,000. Has anyone else noticed this? Or know how to tune MariaDB to get better IOPS out of 10.4?

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