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Proper comment on why changing innodb_log_file_size breaks the system

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Jasper N. Brouwer
2017-06-28 21:55:44 +02:00
parent e51a980af1
commit ef67883ab2
2 changed files with 6 additions and 4 deletions
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2
defaults/main.yml
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@@ -45,7 +45,7 @@ mysql_thread_concurrency: 2
# InnoDB settings. # InnoDB settings.
mysql_innodb_file_per_table: '1' mysql_innodb_file_per_table: '1'
mysql_innodb_buffer_pool_size: "{{ (ansible_memtotal_mb * 0.2) | round | int }}M" mysql_innodb_buffer_pool_size: "{{ (ansible_memtotal_mb * 0.2) | round | int }}M"
mysql_innodb_log_file_size: '64M' mysql_innodb_log_file_size: '64M' # If this setting changes on a running system, you will break it! http://dev.mysql.com/doc/refman/5.6/en/innodb-data-log-reconfiguration.html
mysql_innodb_log_buffer_size: '8M' mysql_innodb_log_buffer_size: '8M'
mysql_innodb_flush_log_at_trx_commit: '1' mysql_innodb_flush_log_at_trx_commit: '1'
mysql_innodb_lock_wait_timeout: 50 mysql_innodb_lock_wait_timeout: 50

8
templates/etc/mysql/my.cnf.j2
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@@ -63,11 +63,13 @@ thread_concurrency = {{ mysql_thread_concurrency }}
# InnoDB settings. # InnoDB settings.
innodb_file_per_table = {{ mysql_innodb_file_per_table }} innodb_file_per_table = {{ mysql_innodb_file_per_table }}
innodb_buffer_pool_size = {{ mysql_innodb_buffer_pool_size }} innodb_buffer_pool_size = {{ mysql_innodb_buffer_pool_size }}
{# It craches after install (mysql 5.5)... TODO: FIX -> http://dev.mysql.com/doc/refman/5.6/en/innodb-data-log-reconfiguration.html #} innodb_log_buffer_size = {{ mysql_innodb_log_buffer_size }}
#innodb_log_file_size = {{ mysql_innodb_log_file_size }}
#innodb_log_buffer_size = {{ mysql_innodb_log_buffer_size }}
innodb_flush_log_at_trx_commit = {{ mysql_innodb_flush_log_at_trx_commit }} innodb_flush_log_at_trx_commit = {{ mysql_innodb_flush_log_at_trx_commit }}
innodb_lock_wait_timeout = {{ mysql_innodb_lock_wait_timeout }} innodb_lock_wait_timeout = {{ mysql_innodb_lock_wait_timeout }}
{# If this setting changes on a running system, you will break it! #}
{# See how tho change it here: http://dev.mysql.com/doc/refman/5.6/en/innodb-data-log-reconfiguration.html #}
{# TODO FIX -> Maybe detect a change and fail, just to be safe? #}
innodb_log_file_size = {{ mysql_innodb_log_file_size }}
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