Initial commit for v2.4.3

databases/mysqlOptimizer.py

@@ -0,0 +1,121 @@
+
+import math
+import random
+from textwrap import dedent
+
+
+
+class MySQLOptimizer:
+    defaults = {
+        'mysql_dir': "/var/lib/mysql",
+
+        'log_error': "/var/lib/mysql/mysqld.log",
+        'slow_query_log_file': "/var/lib/mysql/mysqld-slow.log",
+
+        'pid_file': "/var/lib/mysql/mysqld.pid",
+
+        'mysql_ram_gb': 1,
+
+        'query_cache_type': 0,
+        'query_cache_size': 0,
+
+        'long_query_time': 2,
+        'max_connections': 500,
+
+        'server_id': random.randint(100000, 999999)
+    }
+
+
+    @staticmethod
+    def mycnf_innodb_log_file_size_MB(innodb_buffer_pool_size_GB):
+        if innodb_buffer_pool_size_GB > 64:
+            return '768M'
+        if innodb_buffer_pool_size_GB > 24:
+            return '512M'
+        if innodb_buffer_pool_size_GB > 8:
+            return '256M'
+        if innodb_buffer_pool_size_GB > 2:
+            return '128M'
+
+        return '64M'
+
+    @staticmethod
+    def output_memory_gb(gb):
+
+        if math.fabs(math.ceil(gb) - gb) < 0.01:
+            return str(int(gb)) + 'G'
+
+        return str(int(gb * 1024)) + 'M'
+
+    @staticmethod
+    def mycnf_make(m):
+        m['innodb_buffer_pool_size'] = MySQLOptimizer.output_memory_gb(float(m['mysql_ram_gb']) * 0.15)
+        m['innodb_log_file_size'] = MySQLOptimizer.mycnf_innodb_log_file_size_MB(m['mysql_ram_gb'])
+        return m
+
+    @staticmethod
+    def output_my_cnf(_metaconf):
+        return dedent("""
+[mysqld]
+
+# GENERAL #
+user                           = mysql
+default-storage-engine         = InnoDB
+#socket                         = {mysql_dir}/mysql.sock
+#pid-file                       = {pid_file}
+
+# MyISAM #
+# key-buffer-size                = 32M
+# myisam-recover                 = FORCE,BACKUP
+
+# SAFETY #
+max-allowed-packet             = 16M
+max-connect-errors             = 1000000
+sql-mode                       = NO_ENGINE_SUBSTITUTION,NO_AUTO_CREATE_USER
+sysdate-is-now                 = 1
+innodb-strict-mode             = 1
+
+# DATA STORAGE #
+datadir                        = {mysql_dir}
+
+# SERVER ID # 
+server-id                      = {server_id}
+
+# CACHES AND LIMITS #
+max-connections                = {max_connections}
+tmp-table-size                 = 32M
+max-heap-table-size            = 32M
+query-cache-type               = {query_cache_type}
+query-cache-size               = {query_cache_size}
+thread-cache-size              = 50
+open-files-limit               = 65535
+table-definition-cache         = 1024
+table-open-cache               = 2048
+
+# INNODB #
+innodb-flush-method            = O_DIRECT
+innodb-log-files-in-group      = 2
+innodb-log-file-size           = {innodb_log_file_size}
+innodb-flush-log-at-trx-commit = 1
+innodb-file-per-table          = 1
+innodb-buffer-pool-size        = {innodb_buffer_pool_size}
+
+# LOGGING #
+#log-error                      = {log_error}
+slow-query-log                 = 1
+#slow-query-log-file            = {slow_query_log_file}
+log-queries-not-using-indexes  = OFF
+long_query_time                = 30
+
+[mysqldump]
+max-allowed-packet             = 16M
+
+!includedir /etc/mysql/conf.d/
+!includedir /etc/mysql/mariadb.conf.d/
+
+""".format(**MySQLOptimizer.mycnf_make(_metaconf)))
+
+    @staticmethod
+    def generateRecommendations(detectedRam):
+        MySQLOptimizer.defaults['mysql_ram_gb'] = int(float(detectedRam))
+        return MySQLOptimizer.output_my_cnf(MySQLOptimizer.defaults)