Dotaz: MariaDB innodb_file_format

[Martin]

Ahoj, podle https://docs.nextcloud.com/server/17/admin_manual/configuration_database/mysql_4byte_support.html jsem chtěl změnit variables na Barracudu, ale nějak se nedaří. Nevím, proč mám nyní value prázdný a jak obejít to read only. Díky za pomoc

MariaDB [(none)]> show variables like "%innodb_file%";
+-----------------------+-------+
| Variable_name         | Value |
+-----------------------+-------+
| innodb_file_format    |       |
| innodb_file_per_table | ON    |
+-----------------------+-------+
2 rows in set (0.002 sec)

MariaDB [(none)]> SET GLOBAL innodb_file_format = barracuda;
ERROR 1238 (HY000): Variable 'innodb_file_format' is a read only variable
MariaDB [(none)]> 

Odpovědi

[Petr Fiedler]

Nextcloud a MariaDB zrovna teď taky řeším. Můžu se zeptat, proč to chceš změnit?

[Fanda]

Že by: "Aby bylo možné používat Emojis (textově založené smajlíky) na serveru Nextcloud s databází MySQL, je třeba trochu vylepšit instalaci..." :)

[Petr Fiedler]

Tak to opravdu nepotřebuji.

[KOLEGA]

Tohle se nastavuje v konfiguraci databaze na strane serveru a nacte se. Proto je, IHMO, readonly

$ cat /etc/mysql/mariadb.conf.d/50-server.cnf 
#
# These groups are read by MariaDB server.
# Use it for options that only the server (but not clients) should see
#
# See the examples of server my.cnf files in /usr/share/mysql/
#

# this is read by the standalone daemon and embedded servers
[server]

# this is only for the mysqld standalone daemon
[mysqld]

#
# * Basic Settings
#
user		= mysql
pid-file	= /var/run/mysqld/mysqld.pid
socket		= /var/run/mysqld/mysqld.sock
port		= 3306
basedir		= /usr
datadir		= /var/lib/mysql
tmpdir		= /tmp
lc-messages-dir	= /usr/share/mysql
skip-external-locking

# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address		= 172.16.0.210

#
# * Fine Tuning
#
key_buffer_size		= 16M
max_allowed_packet	= 256M
thread_stack		= 192K
thread_cache_size       = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam_recover_options  = BACKUP
max_connections        = 1000
#table_cache            = 64
#thread_concurrency     = 10

#
# * Query Cache Configuration
#
query_cache_limit	= 1M
query_cache_size        = 16M

#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file        = /var/log/mysql/mysql.log
#general_log             = 1
#
# Error log - should be very few entries.
#
log_error = /var/log/mysql/error.log
#
# Enable the slow query log to see queries with especially long duration
#slow_query_log_file	= /var/log/mysql/mariadb-slow.log
#long_query_time = 10
#log_slow_rate_limit	= 1000
#log_slow_verbosity	= query_plan
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
#       other settings you may need to change.
#server-id		= 1
#log_bin			= /var/log/mysql/mysql-bin.log
expire_logs_days	= 10
max_binlog_size   = 100M
#binlog_do_db		= include_database_name
#binlog_ignore_db	= exclude_database_name

#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!

#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates you can use for example the GUI tool "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
#
# Accept only connections using the latest and most secure TLS protocol version.
# ..when MariaDB is compiled with OpenSSL:
# ssl-cipher=TLSv1.2
# ..when MariaDB is compiled with YaSSL (default in Debian):
# ssl=on

#
# * Character sets
#
# MySQL/MariaDB default is Latin1, but in Debian we rather default to the full
# utf8 4-byte character set. See also client.cnf
#
character-set-server  = utf8mb4
collation-server      = utf8mb4_general_ci

#
# * Unix socket authentication plugin is built-in since 10.0.22-6
#
# Needed so the root database user can authenticate without a password but
# only when running as the unix root user.
#
# Also available for other users if required.
# See https://mariadb.com/kb/en/unix_socket-authentication-plugin/

# this is only for embedded server
[embedded]

# This group is only read by MariaDB servers, not by MySQL.
# If you use the same .cnf file for MySQL and MariaDB,
# you can put MariaDB-only options here
[mariadb]

# This group is only read by MariaDB-10.1 servers.
# If you use the same .cnf file for MariaDB of different versions,
# use this group for options that older servers don't understand
[mariadb-10.1]

[mysql]
default-character-set          = utf8mb4

[mysqld]
character-set-client-handshake = FALSE
character-set-server           = utf8mb4
collation-server               = utf8mb4_unicode_ci
innodb_default_row_format      = dynamic
innodb_file_per_table          = TRUE
innodb_file_format             = barracuda
innodb_large_prefix            = TRUE