5b9ce0b551
Users can configure the number of worker threads however when it's not specified the calculated number of workers can get too large on hosts with a large number of CPUs. Change-Id: Ic0c77d03ab67d3850fa6b46010e63d886a96cc31
100 lines
2.9 KiB
Django/Jinja
100 lines
2.9 KiB
Django/Jinja
{%- set all_calculated_max_connections = [] %}
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{%- for galera_node in galera_cluster_members %}
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{%- set vcpus = hostvars[galera_node]['ansible_processor_vcpus'] %}
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{%- if all_calculated_max_connections.append([[vcpus|default(2), 2] | max, galera_wsrep_slave_threads_max] | min * 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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log_error = /var/log/mysql_logs/galera_server_error.log
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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_general_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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bind-address = ::
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{% if galera_server_id is defined %}
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server-id = {{ galera_server_id }}
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{% endif %}
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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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log_bin_trust_function_creators = 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: If galera_max_connections is not configured by user, the number of max
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# connections is defined by ( host_vcpus * 100 ) with a capping value of 1600.
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# This value is the lowest integer based on the ansible facts gathered from
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# every galera node.
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# Computing the connections value using the lowest denominator maintains
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# cluster integrity by not attempting to over commit to a less capable machine.
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# These are the computed max_connections based on the cluster data
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# {{ 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 = {{ galera_file_limits }}
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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-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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