xinfra/ansible/templates/mysql-instance.cnf.j2

# Managed by XINFRA MySQL delivery - generated, do not edit by hand
# instance={{ mysql_instance }} version={{ mysql_version_value }} topology={{ topology }}
[client]
socket={{ mysql_run_dir }}/mysql.sock
port={{ mysql_port_value }}

[mysqld]
user=mysql
basedir=/usr
datadir={{ mysql_data_dir }}
tmpdir={{ mysql_tmp_dir }}
socket={{ mysql_run_dir }}/mysql.sock
pid-file={{ mysql_run_dir }}/mysql.pid
port={{ mysql_port_value }}
bind-address=0.0.0.0
skip-name-resolve=ON
server-id={{ mysql_server_id_value }}
local-infile=OFF

# --- charset / collation / timezone / identifier case ---
character-set-server={{ mysql_character_set }}
collation-server={{ mysql_collation }}
default-time-zone={{ mysql_timezone }}
lower-case-table-names={{ mysql_lower_case_table_names }}

# --- error / slow log ---
log-error={{ mysql_log_dir }}/error.log
slow-query-log=ON
slow-query-log-file={{ mysql_log_dir }}/slow.log
long-query-time={{ mysql_long_query_time }}

# --- binlog (PITR + replication base) ---
log-bin={{ mysql_binlog_dir }}/binlog
binlog-format=ROW
sync-binlog={{ mysql_sync_binlog }}
max-binlog-size={{ mysql_max_binlog_size }}
binlog-expire-logs-seconds={{ mysql_binlog_expire_logs_seconds }}
{% if topology != 'standalone' %}
gtid-mode=ON
enforce-gtid-consistency=ON
relay-log={{ mysql_binlog_dir }}/relay-bin
{% endif %}

# --- InnoDB core ---
innodb-buffer-pool-size={{ ((mysql_memory_mb_value | int) * 55 / 100) | int }}M
innodb-flush-method=O_DIRECT
innodb-flush-log-at-trx-commit={{ mysql_flush_log_at_trx_commit }}
innodb-io-capacity={{ mysql_io_capacity }}
max-connections={{ mysql_max_connections }}

# --- redo log (version-sensitive) ---
innodb-log-group-home-dir={{ mysql_redo_dir }}
{% if mysql_version_value in ['8.0', '8.4'] %}
innodb-redo-log-capacity={{ mysql_redo_capacity }}
{% else %}
innodb-log-file-size={{ mysql_redo_capacity }}
{% endif %}

# --- X Protocol disabled (version-sensitive) ---
{% if mysql_version_value in ['8.0', '8.4'] %}
mysqlx=0
{% elif mysql_version_value == '5.7' %}
loose-mysqlx=0
{% endif %}

{% if topology == 'mgr_3' %}
# --- Group Replication (config-ready; runtime bootstrap handled out-of-band) ---
plugin-load-add=group_replication.so
{% if mysql_version_value != '8.4' %}
{# deprecated since 8.0.26 and removed in 8.3+; only inject for older series #}
transaction-write-set-extraction=XXHASH64
{% endif %}
loose-group-replication-group-name={{ mgr_group_name }}
loose-group-replication-start-on-boot=OFF
loose-group-replication-local-address={{ ansible_host | default(inventory_hostname) }}:{{ mysql_gr_port_value }}
loose-group-replication-group-seeds={% for host in ansible_play_hosts_all %}{{ hostvars[host].ansible_host | default(host) }}:{{ mysql_gr_port_value }}{% if not loop.last %},{% endif %}{% endfor %}

loose-group-replication-ip-allowlist={% for host in ansible_play_hosts_all %}{{ hostvars[host].ansible_host | default(host) }}{% if not loop.last %},{% endif %}{% endfor %}

loose-group-replication-single-primary-mode=ON
loose-group-replication-enforce-update-everywhere-checks=OFF
{% endif %}