在微信群看到有朋友需要单台机器部署多个数据库进行测试，正好之前写过一个脚本，拿出来分享一下。
#!/bin/bash
#download mysql package
package="/opt/mysql-8.0.27-linux-glibc2.12-x86_64.tar.xz"
echo -n "please input start_port:"
read start_port
echo -n "please input end_port:"
read end_port
pts=$(seq ${start_port} ${end_port})
echo -n "please input innodb_pool_size,eg 512M,2G:"
read pool_size
innodb_pool_size=${pool_size}
echo -n "please input data_base dir:"
read base_dir
data_root=${base_dir}
#test network connecting
ping -c 3 www.baidu.com
if test $? -eq 0;then
mkdir software && cd software
#download package
fi
#create mysql user and group
if test `cat /etc/passwd |grep mysql`;then
echo "mysql user already exist"
else
useradd -M -s /sbin/nologin mysql
fi
#unzip mysql package
xz -dk $package;
tar -xvf $(basename ${package} .xz)
package_dir=$(basename ${package} .tar.xz)
for pt in $pts;
do
mkdir -p ${data_root}/$pt
cp -rpf ${package_dir}/* ${data_root}/$pt && mkdir -p ${data_root}/$pt/data
chown -R mysql:mysql ${data_root}/$pt
#config mysql configfile
cat >/etc/my$pt.cnf<<EOF
[mysql]
auto-rehash
socket =${data_root}/$pt/data/mysql$pt.sock # /tmp/mysql.sock
[mysqld]
####: for global
user =mysql
server_id =$pt # 1
port =$pt
mysqlx =0
basedir =${data_root}/$pt/ # /usr/local/mysql/
datadir =${data_root}/$pt/data # /usr/local/mysql/data/
max_prepared_stmt_count =1048576 # 16382
open_files_limit =65536 # 65536
socket =${data_root}/$pt/data/mysql$pt.sock # /tmp/mysql.sock
skip_name_resolve =1 # 0
super_read_only =OFF # OFF
sql_require_primary_key =ON # OFF
cte_max_recursion_depth =1000 # 1000
log_timestamps =system # UTC
lower_case_table_names =1 # 0
auto_increment_increment =1 # 1
auto_increment_offset =1 # 1
lock_wait_timeout =31536000 # ! for metadata lock wait
event_scheduler =OFF # ON
auto_generate_certs =ON # ON
big_tables =OFF # OFF ! for TempTable storage engine
join_buffer_size =256k # 0.25M
activate_all_roles_on_login =ON # OFF
end_markers_in_json =OFF # OFF
tmpdir =/tmp/
max_connections =512 # 151
autocommit =ON # ON
sort_buffer_size =262144 # 262144(256k) ! fix too many Sort_merge_passes per second
# # in SHOW GLOBAL STATUS output; speed up ORDER BY or GROUP BY operations
####: for table cache
table_open_cache =4000 # 2000
table_definition_cache =2000 # 1400
table_open_cache_instances =32 # 16
####: for net
max_allowed_packet =64M # 64M
bind_address =* # *
connect_timeout =10 # 10
interactive_timeout =28800 # 28800
net_read_timeout =30 # 30
net_retry_count =10 # 10
net_write_timeout =60 # 60
net_buffer_length =32k # 16384(16k)
####: for logs
log_output =FILE # FILE
## -- general log
general_log =OFF # OFF
general_log_file =general.log # hotname.log
## -- error log
log_error =err.log # stderr
log_statements_unsafe_for_binlog =ON # ! for error 1592
## -- slow log
long_query_time =2.0 # 10.000000
log_queries_not_using_indexes =OFF # OFF
log_slow_admin_statements =OFF # OFF
log_slow_slave_statements =OFF # OFF
slow_query_log =ON # OFF
slow_query_log_file =slow.log # slow.log
####: for binlog
log_bin =mysql-bin
binlog_checksum =none # CRC32
log_bin_trust_function_creators =ON # OFF
binlog_direct_non_transactional_updates =OFF # OFF
binlog_expire_logs_seconds =604800 # 2592000(30days) | 604800(7days)
binlog_error_action =ABORT_SERVER # ABORT_SERVER | IGNORE_ERROR
binlog_format =ROW # ROW | STATEMENT | MIXED
max_binlog_stmt_cache_size =1G # 18446744073709547520
max_binlog_cache_size =1G # 18446744073709547520(1G)
max_binlog_size =1G
binlog_order_commits =ON # ON
binlog_row_image =FULL # FULL | MINIMAL | NOBLOB
binlog_row_metadata =MINIMAL # MINIMAL | FULL
binlog_rows_query_log_events =ON # OFF
sync_binlog =1 # 1 | 0 | N
binlog_stmt_cache_size =32k # 32768(32k)
log_slave_updates =ON # ON
binlog_group_commit_sync_delay =4000 # 0
binlog_group_commit_sync_no_delay_count =10 # 0
binlog_cache_size =96k # 32768(32k)
binlog_transaction_dependency_history_size =25000 # 25000
binlog_transaction_dependency_tracking =WRITESET # COMMIT_ORDER | WRITESET | WRITESET_SESSION
####: for storage engine
default_storage_engine =innodb # InnoDB
default_tmp_storage_engine =innodb # InnoDB
internal_tmp_mem_storage_engine =TempTable # TempTable
####: for innodb
## disk I/O and file space management
innodb_data_home_dir =./ # ./
innodb_data_file_path =ibdata1:256M;ibdata2:256M:autoextend # ibdata1:12M:autoextend
innodb_page_size =16k # 16384(16k)
innodb_default_row_format =dynamic # dynamic | compact | redundant
innodb_log_group_home_dir =./ # ./
innodb_log_files_in_group =8 # 2
innodb_log_file_size =128M # 50331648(48M)
innodb_log_buffer_size =256M # 16777216(16M)
innodb_redo_log_encrypt =OFF # OFF
innodb_online_alter_log_max_size =128M # 134217728(128M)
innodb_undo_directory =./ # ./
innodb_undo_log_encrypt =OFF # OFF
innodb_undo_log_truncate =ON # ON
innodb_max_undo_log_size =1G # 1073741824(1G)
innodb_rollback_on_timeout =OFF # OFF
innodb_rollback_segments =128 # 128 [1~128]
innodb_log_checksums =ON # ON
innodb_checksum_algorithm =crc32 # crc32
innodb_log_compressed_pages =ON # ON
innodb_doublewrite =ON # ON ! do not disable it please.
innodb_commit_concurrency =0 # 0
## configuring innodb readonly
innodb_read_only =OFF # OFF
## configuring innodb dedicated server
innodb_dedicated_server =OFF # OFF ! related to mysql auto config please donot chanage
## configuring innodb buffer pool size and instances
innodb_buffer_pool_chunk_size =128M # 134217728(128M)
innodb_buffer_pool_size =${innodb_pool_size} # 134217728(128M)
innodb_buffer_pool_instances =10 # 1
## making the buffer pool scan resistant
innodb_old_blocks_pct =37 # 37
innodb_old_blocks_time =1000 # 1000
## configuring innodb buffer pool prefetching(read ahead)
innodb_random_read_ahead =off # OFF
innodb_read_ahead_threshold =56 # 56
## configuring innodb buffer pool flushing
innodb_max_dirty_pages_pct_lwm =20 # 10
innodb_max_dirty_pages_pct =90 # 90
## fine-tuning innodb buffer pool flushing
innodb_flush_neighbors =0 # off | on (off for ssd ,on for hdd)
innodb_lru_scan_depth =1024 # 1024
## tuning for sharp checkpoint
innodb_adaptive_flushing =ON # ON
innodb_adaptive_flushing_lwm =10 # 10
innodb_flushing_avg_loops =30 # 30(a heih value means adaptive flushing is slow)
## saving and restoring the buffer pool state
innodb_buffer_pool_dump_pct =50 # 50
innodb_buffer_pool_dump_at_shutdown =ON # ON
innodb_buffer_pool_load_at_startup =ON # ON
innodb_buffer_pool_filename =ib_buffer_pool # ib_buffer_pool
innodb_stats_persistent =ON # ON
innodb_stats_on_metadata =ON # OFF
innodb_stats_method =nulls_equal # nulls_equal
innodb_stats_auto_recalc =ON # ON
innodb_stats_include_delete_marked =ON # ON
innodb_stats_persistent_sample_pages=20 # 20
innodb_stats_transient_sample_pages =8 # 8
innodb_status_output =OFF # OFF
innodb_status_output_locks =OFF # OFF
innodb_buffer_pool_dump_now =OFF # OFF
innodb_buffer_pool_load_abort =OFF # OFF
innodb_buffer_pool_load_now =OFF # OFF
## configuring thread concurrency for innodb
innodb_thread_concurrency =0 # 0
#? if innodb_thread_concurrency is 0, the value of innodb_thread_sleep_delay is ignored;
#? so default the next 3 are ignored.
innodb_concurrency_tickets =5000 # 5000
innodb_thread_sleep_delay =15000 # 4000 ( 4ms)
innodb_adaptive_max_sleep_delay =150000 # 150000 (15/100 s)
## configuring the number of background innoDB i/o threads
#? if you see more than 64 × innodb_read_io_threads pending read requests in
#? SHOW ENGINE INNODB STATUS output, you might improve performance
#? by increasing the value of innodb_read_io_threads.
innodb_read_io_threads =4 # 4
innodb_write_io_threads =4 # 4
## using asynchronous i/o on linux
#? 1):perform read-ahead and write requests for data file pages.
#? 2):Too many I/O write requests dispatched to the operating system for parallel processing could,
#? in some cases, result in I/O read starvation
innodb_use_native_aio =ON # ON
## configuring the innodb master thread i/o rate
innodb_flush_sync =OFF # ON
#? To adhere to the limit on InnoDB background I/O activity defined by the innodb_io_capacity setting,
#? disable innodb_flush_sync.
innodb_io_capacity =4000 # 200
innodb_io_capacity_max =20000 # 2000
## configuring spin lock polling
innodb_spin_wait_delay =6 # 6
## configuring innoDB purge scheduling
innodb_purge_threads =4 # 4
innodb_purge_batch_size =300 # 300(300 undo log page)
innodb_purge_rseg_truncate_frequency=128 # 128
## -- Lock & Wait
innodb_deadlock_detect =ON # ON
innodb_autoinc_lock_mode =2 # 0 | 1 | 2
innodb_print_all_deadlocks =ON # OFF
innodb_lock_wait_timeout =50 # 50
innodb_table_locks =ON # ON
innodb_sync_array_size =1 # 1
innodb_sync_spin_loops =30 # 30
## innodb others
innodb_print_ddl_logs =OFF # OFF
innodb_replication_delay =0 # 0
innodb_cmp_per_index_enabled =OFF # ! do not enable it please.
innodb_disable_sort_file_cache =OFF # OFF
innodb_numa_interleave =OFF # OFF
innodb_strict_mode =ON # ON
innodb_sort_buffer_size =1M # 1M(global and only for full-text search)
innodb_fast_shutdown =1 # 0 | 1 | 2
innodb_force_load_corrupted =OFF # OFF
innodb_force_recovery =0 # 0 | 1 | 2 | 3 | 4 | 5 | 6
innodb_temp_tablespaces_dir =./#innodb_temp/ # ./#innodb_temp/
innodb_tmpdir =./ # ! the sort file temp dir of alter table opration
innodb_temp_data_file_path =ibtmp1:64M:autoextend # ibtmp1:12M:autoextend ! stores rollback segments for changes made to user-created temporary tables.
innodb_page_cleaners =4 # 1
## adaptive hash index
innodb_adaptive_hash_index =ON # ON
innodb_adaptive_hash_index_parts =8 # 8
## -- Flush & Io
innodb_flush_log_at_timeout =1 # 1
innodb_flush_log_at_trx_commit =1 # 1 | 0 | 2
innodb_flush_method =O_DIRECT # fsync | o_direct
innodb_fsync_threshold =0 # 0 ~ 2**64-1
innodb_change_buffer_max_size =25 # 25
innodb_change_buffering =all # all | none | inserts | deletes | changes | purges
####: others
div_precision_increment =4 # 4
eq_range_index_dive_limit =200 # 200
explicit_defaults_for_timestamp =ON # ON
group_concat_max_len =1024 # 1024
flush =OFF # OFF
flush_time =0 # 0
automatic_sp_privileges =ON # ON
innodb_fill_factor =90 # 100
innodb_file_per_table =ON # ON
innodb_autoextend_increment =64 # 64
innodb_open_files =64000 # 4000
####: for authentication
caching_sha2_password_auto_generate_rsa_keys =ON # ON
caching_sha2_password_private_key_path =private_key.pem # private_key.pem
caching_sha2_password_public_key_path =public_key.pem # public_key.pem
default_authentication_plugin =caching_sha2_password # caching_sha2_password
default_password_lifetime =0 # 0
disconnect_on_expired_password =ON # ON
####: for character
character_set_server =utf8mb4 # utf8mb4
collation_server =utf8mb4_0900_ai_ci # utf8mb4_0900_ai_ci
####: for optimizer
optimizer_prune_level =1
optimizer_search_depth =62
optimizer_switch =index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,engine_condition_pushdown=on,index_condition_pushdown=on,mrr=on,mrr_cost_based=on,block_nested_loop=on,batched_key_access=off,materialization=on,semijoin=on,loosescan=on,firstmatch=on,duplicateweedout=on,subquery_materialization_cost_based=on,use_index_extensions=on,condition_fanout_filter=on,derived_merge=on,use_invisible_indexes=off,skip_scan=on
optimizer_trace =enabled=off,one_line=off
optimizer_trace_features =greedy_search=on,range_optimizer=on,dynamic_range=on,repeated_subselect=on
optimizer_trace_limit =1
optimizer_trace_max_mem_size =1048576
optimizer_trace_offset =-1
#### for performance_schema
performance_schema =on # on
performance_schema_consumer_global_instrumentation =on # on
performance_schema_consumer_thread_instrumentation =on # on
performance_schema_consumer_events_stages_current =on # off
performance_schema_consumer_events_stages_history =on # off
performance_schema_consumer_events_stages_history_long =off # off
performance_schema_consumer_statements_digest =on # on
performance_schema_consumer_events_statements_current =on # on
performance_schema_consumer_events_statements_history =on # on
performance_schema_consumer_events_statements_history_long =off # off
performance_schema_consumer_events_waits_current =on # off
performance_schema_consumer_events_waits_history =on # off
performance_schema_consumer_events_waits_history_long =off # off
performance-schema-instrument ='memory/%=COUNTED'
EOF
##config mysql startup script
cat<<EOF > /etc/init.d/mysql$pt
port=$pt
mysql_user="root"
cmdpath="${data_root}/${pt}/bin"
mysql_sock="${data_root}/${pt}/data/mysql$pt.sock"
#pidname="$(hostname)"
mysqld_pid_file_path="${data_root}/${pt}/data/$(hostname).pid"
start(){
if [ ! -e "\$mysql_sock" ];then
printf "Starting MySQL...\n"
\${cmdpath}/mysqld --defaults-file=/etc/my${pt}.cnf --user=\${mysql_user} 2>/dev/null &
sleep 3
else
printf "MySQL is running...\n"
exit 1
fi
}
stop(){
if [ ! -e "\$mysql_sock" ];then
printf "MySQL is stopped...\n"
exit 1
else
printf "Stoping MySQL...\n"
mysqld_pid=\`cat "\$mysqld_pid_file_path"\`
if (kill -0 \$mysqld_pid 2>/dev/null)
then
kill \$mysqld_pid
sleep 2
else
rm \$mysqld_pid_file_path
fi
fi
}
restart(){
printf "Restarting MySQL...\n"
stop
sleep 2
start
}
case "\$1" in
start)
start
;;
stop)
stop
;;
restart)
restart
;;
*)
printf "Usage: /etc/init.d/mysql${pt} {start|stop|restart}\n"
esac
EOF
#initial mysqlserver
${data_root}/$pt/bin/mysqld --defaults-file=/etc/my$pt.cnf --initialize --basedir=${data_root}/$pt
#startup mysqlserver
chmod 755 /etc/init.d/mysql${pt}
/etc/init.d/mysql${pt} start
if [ $? -eq 0 ];then
sleep 20
#modify mysqlserver password
export MYSQL_PWD=$(cat ${data_root}/$pt/data/err.log |grep password |awk -F 'root@localhost:' '{print $NF}' |sed 's/^[][ ]*//g')
${data_root}/$pt/bin/mysql --connect-expired-password -hlocalhost -uroot -P${pt} -S ${data_root}/${pt}/data/mysql$pt.sock -e "alter user root@localhost identified by '123123';"
if [ $? -eq 0 ];then
echo "MySQL INSTANCE $pt is install sucessed!"
else
echo "MySQL INSTANCE $pt is install maybe failed!please you check"
fi
fi
done
1、配置文件参数是mysql 8.0
2、安装成功后root的初始密码是：123123
3、运行脚本时，只需要输入开始端口号，结束端口号、innodb_buffer_size的大小、安装目录即可。
4、Mysql各实例配置文件路径为：/etc/my{port}.cnf
5、Mysql各实例配置文件路径为：/etc/init.d/mysql{port}
