Hello. The read lock is only to get the masters coordinates, but that can
also be done with --master-data and/or --gtid, depending on how your doing
replication. The fact that you can't dump a system that has a session open
with read lock, is expected, all that you really want to do during that
time is get the coordinates, IMO that page should be updated. You can see
similar comments saying so.
Good Luck. I normally just use mariabackup for restores, but have this in
my mysqldump creation script, i used to use to seed replicas
DEFAULT_ARGS="--all-databases --gtid --routines --events"
if [ "${NODE_TYPE}" = "replica" ]; then
NODE_OPT="--master-data";
else
echo "Coming soon, bye"
exit 1
fi
On Tue, Dec 13, 2022 at 12:01 PM Alex <mysqlstud...@gmail.com> wrote:
> Hi,
> I'm using mariadb-10.5.18-1.fc37.x86_64 on fedora37 set up as a master
> server. There are currently two or three slaves configured and operating
> properly. I'm trying to add another slave, and for some reason when I try
> to flush tables with read lock, then dump the databases to be transferred
> to the new slave, mysqldump just prints:
>
> -- Connecting to localhost...
>
> At first I didn't realize it, but soon the database stopped responding to
> all clients until I released the lock with "unlock tables".
>
> I'm following these directions:
>
> https://mariadb.com/kb/en/setting-up-replication/
>
> What could I be doing wrong? Here are the my.cnf options that I believe
> could be related to my issue. Any ideas greatly appreciated.
>
> The server has 128GB of RAM.
>
> [mysqld]
> sql_mode=ONLY_FULL_GROUP_BY
> character-set-client-handshake = FALSE
> character-set-server = utf8mb4
> collation-server = utf8mb4_unicode_ci
> max_connections=1000
> replicate_do_db='repdb'
> replicate_do_db='sbclient'
> port = 3306
> socket = /var/lib/mysql/mysql.sock
> skip-external-locking
> key_buffer_size = 256M
> max_allowed_packet = 512M
> join_buffer_size = 2M
> read_rnd_buffer_size = 4M
> myisam_sort_buffer_size = 64M
> query_cache_size = 400000000
> query_cache_type = 1
> query_cache_strip_comments = 1
> relay_log_space_limit = 500M
> relay_log_purge = 1
> log-slave-updates = 1
> local_infile = OFF
> binlog_format = ROW
> max_heap_table_size = 2048M
> tmp_table_size = 2048M
> relay-log=myserver-relay-bin
> log_bin = /var/log/mariadb/mysql-bin.log
> log_warnings = 1
> expire_logs_days = 2
> max_binlog_size = 500M
> plugin_load=server_audit=server_audit.so
> plugin_load_add = query_response_time
> server_audit_events=connect,query
> server_audit_file_path = /var/log/mariadb/server_audit.log
> server_audit_file_rotate_size = 1G
> server_audit_file_rotations = 1
> slow-query-log = 1
> slow-query-log-file = /var/log/mariadb/mariadb-slow.log
> long_query_time = 1
> log_error = /var/log/mariadb/mariadb-error.log
> skip-networking=0
> binlog_format=mixed
> server-id = 590
>
>
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