41332ab35f
Without log_slave_updates enabled, the bin logs are only written on the cluster server that handles the request. This makes database recovery more difficult as the bin logs are spread across all servers and must be combined manually in order to recover the database. Enabling log_slave_updates ensures all nodes in the cluster contain the complete bin logs and recovery can be performed from any cluster member. Change-Id: I978d6aea93369382faeace96b7865b9e56a7995a Closes-Bug: #1479473
91 lines
2.6 KiB
Django/Jinja
91 lines
2.6 KiB
Django/Jinja
{%- set all_calculated_max_connections = [] %}
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{%- for galera_node in groups['galera_all'] %}
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{%- if all_calculated_max_connections.append(hostvars[galera_node]['ansible_processor_vcpus'] * 100) %}
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{%- endif %}
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{%- endfor %}
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{%- set calculated_max_connections = all_calculated_max_connections|sort %}
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# {{ ansible_managed }}
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[client]
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port = 3306
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socket = /var/run/mysqld/mysqld.sock
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[mysqld_safe]
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socket = /var/run/mysqld/mysqld.sock
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nice = 0
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[mysql]
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default-character-set = utf8
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[mysqld]
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user = mysql
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collation-server = utf8_unicode_ci
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init-connect = 'SET NAMES utf8'
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character-set-server = utf8
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datadir = /var/lib/mysql
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# LOGGING #
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log-queries-not-using-indexes = {{ galera_unindexed_query_logging }}
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slow-query-log = {{ galera_slow_query_logging }}
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slow-query-log-file = /var/log/mysql_logs/mysql-slow.log
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log_error = /var/log/mysql_logs/galera_server_error.log
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log-bin = /var/lib/mysql/mariadb-bin
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log-bin-index = /var/lib/mysql/mariadb-bin.index
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expire-logs-days = 7
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log_slave_updates = 1
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# SAFETY #
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max-allowed-packet = 16M
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max-connect-errors = 1000000
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# NOTE: The number of max connections is defined by ( host_vcpus * 100 ). This value
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# is the lowest integer based on the ansible facts gathered from every galera node.
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# Computing the connections value using the lowest denominator maintains cluster integrity
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# by not attempting to over commit to a less capable machine.
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# These are the computed max_connections based on cluster data {{ calculated_max_connections }}
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max_connections = {{ galera_max_connections | default(calculated_max_connections[0]) }}
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wait_timeout = {{ galera_wait_timeout }}
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# CACHES AND LIMITS #
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tmp-table-size = {{ galera_max_heap_table_size }}
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max-heap-table-size = {{ galera_tmp_table_size }}
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query-cache-type = 0
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query-cache-size = 0M
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thread-cache-size = 50
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open-files-limit = 65535
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table-definition-cache = 4096
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table-open-cache = 10240
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# INNODB #
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innodb-flush-method = O_DIRECT
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innodb-additional-mem-pool-size = {{ galera_innodb_additional_mem_pool_size }}
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innodb-log-file-size = {{ galera_innodb_log_file_size }}
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innodb-flush-log-at-trx-commit = 1
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innodb-file-per-table = 1
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innodb-buffer-pool-size = {{ galera_innodb_buffer_pool_size }}
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# Depending on number of cores and disk sub
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innodb-read-io-threads = 4
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innodb-write-io-threads = 4
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innodb-doublewrite = 1
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innodb-log-buffer-size = {{ galera_innodb_log_buffer_size }}
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innodb-buffer-pool-instances = 8
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innodb-log-files-in-group = 2
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innodb-thread-concurrency = 64
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# avoid statistics update when doing e.g show tables
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innodb_stats_on_metadata = 0
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[mysqldump]
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quick
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quote-names
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max_allowed_packet = 16M
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!includedir /etc/mysql/conf.d/
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