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--- linux:mysql [2019/01/12 13:41]
admin [Backup]
+++ linux:mysql [2019/10/21 09:53] (current)
admin
@@ Line 3: / Line 3: @@
 ====== Backup ======
 ===== Simple //naive// backup =====
-Back up all databases into one file at once is a **BAD** idea.
+Back up all databases into one file at once is a **bad idea**.
-  - If there is a single problem (corrupted table, unreadable file, whatever), the rest of DB will **not* be dumped
+  - If there is a single problem (corrupted table, unreadable file, whatever), the rest of DB will **not** be dumped
   - Restoring one DB within many from one file is difficult, time consuming and with slightly bigger databases ~ 10GB i wish you a lot of RUM
@@ Line 123: / Line 123: @@
 # /etc/init.d/mysql stop
 # /etc/init.d/mysql start
+</code>
+===== Tunning ======
+<code>
+max_connections        = 500
+innodb_buffer_pool_dump_at_shutdown = 0
+innodb_buffer_pool_dump_pct = 100
+innodb_buffer_pool_instances = 8
+innodb_buffer_pool_load_at_startup = 0
+innodb_buffer_pool_size = 220G
+innodb_log_file_size = 5G
+thread_cache_size = 500
+thread_pool_size = 12
+innodb_read_io_threads = 64
+innodb_write_io_threads = 64
+tmp_table_size = 12G
+max_heap_table_size = 12G
+skip-name-resolve
+query_cache_type = 0
+query_cache_limit = 128M
+query_cache_min_res_unit = 4k
+query_cache_size = 0
+max_allowed_packet = 1G
+key_buffer_size = 64M
+aria_pagecache_buffer_size = 1G
+back_log = 500
+sort_buffer_size = 2M
+join_buffer_size = 4M
+table_open_cache = 10000
+performance_schema = ON
+innodb_flush_log_at_trx_commit = 2
+innodb_lru_scan_depth = 128
+innodb_autoinc_lock_mode = 2
+#skip-log-error = OFF
+slave-skip-errors=all
 </code>

linux/mysql.1547296908.txt.gz · Last modified: 2019/01/12 13:41 by admin