Crash after setting wsrep_on to ON dynamically and reconnect

openxs@ao756:~/dbs/maria10.3$ cat /home/openxs/galera/mynode1.cnf               [mysqld]

datadir=/home/openxs/galera/node1

port=3306

socket=/tmp/mysql-node1.sock

pid-file=/tmp/mysql-node1.pid

log-error=/tmp/mysql-node1.err

binlog_format=ROW

innodb_autoinc_lock_mode=2

wsrep_on=ON

wsrep_provider=/home/openxs/galera/libgalera_smm.so

wsrep_log_conflicts=ON

wsrep_provider_options="cert.log_conflicts=YES"

wsrep_cluster_name = singlebox

wsrep_node_name = node1

wsrep_cluster_address=gcomm://127.0.0.1:4567,127.0.0.1:5020,127.0.0.1:6020?pc.wait_prim=no

log_bin

log_slave_updates=1

binlog_row_image=FULL

gtid_domain_id=4100

wsrep_gtid_domain_id=4100

wsrep_gtid_mode=ON

wsrep_restart_slave=1

server_id=2

slave-skip-errors=1062

innodb_flush_log_at_trx_commit=2

sync_binlog=0

openxs@ao756:~/dbs/maria10.3$

openxs@ao756:~/dbs/maria10.3$ bin/mysqld_safe --defaults-file=/home/openxs/galera/mynode1.cnf --wsrep_on=OFF &

[2] 20161

openxs@ao756:~/dbs/maria10.3$ 200701 13:03:32 mysqld_safe Logging to '/tmp/mysql-node1.err'.

200701 13:03:32 mysqld_safe Starting mysqld daemon with databases from /home/openxs/galera/node1

openxs@ao756:~/dbs/maria10.3$ bin/mysql -uroot --socket=/tmp/mysql-node1.sock   Welcome to the MariaDB monitor.  Commands end with ; or \g.

Your MariaDB connection id is 9

Server version: 10.3.24-MariaDB-log Source distribution

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> show global status like 'wsrep_cluster%';

+--------------------------+----------------------+

| Variable_name            | Value                |

+--------------------------+----------------------+

| wsrep_cluster_conf_id    | 18446744073709551615 |

| wsrep_cluster_size       | 0                    |

| wsrep_cluster_state_uuid |                      |

| wsrep_cluster_status     | Disconnected         |

+--------------------------+----------------------+

4 rows in set (0,002 sec)

MariaDB [(none)]> set global wsrep_on = ON;

Query OK, 0 rows affected (0,000 sec)

MariaDB [(none)]> select 1;

+---+

| 1 |

+---+

| 1 |

+---+

1 row in set (0,000 sec)

MariaDB [(none)]> \r

Connection id:    10

Current database: *** NONE ***

MariaDB [(none)]> select 1;

ERROR 2006 (HY000): MySQL server has gone away

No connection. Trying to reconnect...

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql-node1.sock' (111)

ERROR: Can't connect to the server

unknown [(none)]> exit

Bye

openxs@ao756:~/dbs/maria10.3$ tail -70 /tmp/mysql-node1.err                     2020-07-01 13:03:33 0 [Note] Added new Master_info '' to hash table

2020-07-01 13:03:33 0 [Note] /home/openxs/dbs/maria10.3/bin/mysqld: ready for connections.

Version: '10.3.24-MariaDB-log'  socket: '/tmp/mysql-node1.sock'  port: 3306  Source distribution

200701 13:03:55 [ERROR] mysqld got signal 11 ;

This could be because you hit a bug. It is also possible that this binary

or one of the libraries it was linked against is corrupt, improperly built,

or misconfigured. This error can also be caused by malfunctioning hardware.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

We will try our best to scrape up some info that will hopefully help

diagnose the problem, but since we have already crashed,

something is definitely wrong and this may fail.

Server version: 10.3.24-MariaDB-log

key_buffer_size=134217728

read_buffer_size=131072

max_used_connections=2

max_threads=153

thread_count=8

It is possible that mysqld could use up to

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467423 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7fc678001098

Attempting backtrace. You can use the following information to find out

where mysqld died. If you see no messages after this, something went

terribly wrong...

stack_bottom = 0x7fc6c5949e98 thread_stack 0x49000

/home/openxs/dbs/maria10.3/bin/mysqld(my_print_stacktrace+0x29)[0x55760af4cd29]

mysys/stacktrace.c:270(my_print_stacktrace)[0x55760aa9c187]

/lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7fc6dd892390]

sql/sql_connect.cc:1184(end_connection(THD*))[0x55760a9a3d59]

sql/sql_connect.cc:1409(do_handle_one_connection(CONNECT*))[0x55760a9a45ca]

sql/sql_connect.cc:1310(handle_one_connection)[0x55760a9a4764]

/lib/x86_64-linux-gnu/libpthread.so.0(+0x76ba)[0x7fc6dd8886ba]

x86_64/clone.S:111(clone)[0x7fc6dcd1d41d]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x0):

Connection ID (thread ID): 9

Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains

information that should help you find out what is causing the crash.

Writing a core file...

Working directory at /home/openxs/galera/node1

Resource Limits:

Limit                     Soft Limit           Hard Limit           Units

Max cpu time              unlimited            unlimited            seconds

Max file size             unlimited            unlimited            bytes

Max data size             unlimited            unlimited            bytes

Max stack size            8388608              unlimited            bytes

Max core file size        0                    unlimited            bytes

Max resident set          unlimited            unlimited            bytes

Max processes             14895                14895                processes

Max open files            32184                32184                files

Max locked memory         65536                65536                bytes

Max address space         unlimited            unlimited            bytes

Max file locks            unlimited            unlimited            locks

Max pending signals       14895                14895                signals

Max msgqueue size         819200               819200               bytes

Max nice priority         0                    0

Max realtime priority     0                    0

Max realtime timeout      unlimited            unlimited            us

Core pattern: |/usr/share/apport/apport %p %s %c %d %P %E

openxs@ao756:~/dbs/maria10.3$