（存档的时间长了，没有仔细核对，记录仅供备份） #添加虚拟服务 ipvsadm -A -t 9.30.2.201:15027 -s wrr #添加RS服务（ ipvsadm -a -t 9.30.2.201:15027 -r 9.30.2.199:15027 -g -w 3 #修改虚拟服务 ipvsadm -E -t 10.58.89.140:15515 -s rr #删除所有 ipvsadmin […]
kafka常用操作
1、启停： ./kafka-server-start.sh -daemon ../config/server.properties ./kafka-server-stop.sh -daemon ../config/server.properties 2、创建topic bin/kafka-topics.sh --create --bootstrap-server localhost:9092 -- […]
tc常用限流配置
#模拟网络延迟 tc qdisc add dev eth1 root netem delay 500ms #模拟丢包 tc qdisc add dev bond1 root netem loss 1% #模拟数据包损坏 tc qdisc add dev eth1 root netem corrupt 0.5% #模拟数据包乱序 tc qdisc change dev enp131s0f1 root […]
iptables
1.拦截特定来访端口 iptables -A INPUT -s 192.168.1.10 -p tcp --sport 4232 -j REJECT iptables -A INPUT -s 192.168.2.10 -p tcp --dport 4045 -j DROP iptables -A INPUT -p tcp --dport 4002 -j REJECT 删除 iptables -L […]
AI是真会编
在搜索引擎时代，查询的结果是从万万千千历史信息中过滤的，当AI来临，结果都是基于历史经验“智能”算出来的，一个是有无，一个是真假。当使用者无法判别结果时，往往就会被“智能化”信息中的坑严重误导 举个栗子，在OCP 908认证中有这么一个关于mysqlcheck的问题，一个选项是mysqlcheck改名为mysqlrepair后执行会自动修复损坏的表，正确or否 看看元宝关于mysqlcheck改名 […]
mysql插件audit_log试用
国产的路感觉越走越远，越走越迷糊 1，在mysql的share目录下找到初始化table/routing/plugin的sql文件，然后在mysql库下执行，文件名是audit_log_filter_linux_install.sql，内容如下
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# Copyright (c) 2016, 2025, Oracle and/or its affiliates. CREATE TABLE IF NOT EXISTS audit_log_filter(NAME VARCHAR(64) BINARY NOT NULL PRIMARY KEY, FILTER JSON NOT NULL) engine= InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_ci; CREATE TABLE IF NOT EXISTS audit_log_user(USER VARCHAR(32) BINARY NOT NULL, HOST VARCHAR(255) CHARACTER SET ASCII NOT NULL, FILTERNAME VARCHAR(64) BINARY NOT NULL, PRIMARY KEY (USER, HOST), FOREIGN KEY (FILTERNAME) REFERENCES audit_log_filter(NAME)) engine= InnoDB CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_as_ci; INSTALL PLUGIN audit_log SONAME 'audit_log.so'; CREATE FUNCTION audit_log_filter_set_filter RETURNS STRING SONAME 'audit_log.so'; CREATE FUNCTION audit_log_filter_remove_filter RETURNS STRING SONAME 'audit_log.so'; CREATE FUNCTION audit_log_filter_set_user RETURNS STRING SONAME 'audit_log.so'; CREATE FUNCTION audit_log_filter_remove_user RETURNS STRING SONAME 'audit_log.so'; CREATE FUNCTION audit_log_filter_flush RETURNS STRING SONAME 'audit_log.so'; CREATE FUNCTION audit_log_read_bookmark RETURNS STRING SONAME 'audit_log.so'; CREATE FUNCTION audit_log_read RETURNS STRING SONAME 'audit_log.so'; CREATE FUNCTION audit_log_encryption_password_set RETURNS INTEGER SONAME 'audit_log.so'; CREATE FUNCTION audit_log_encryption_password_get RETURNS STRING SONAME 'audit_log.so'; CREATE FUNCTION audit_log_rotate RETURNS STRING SONAME 'audit_log.so'; SELECT audit_log_filter_flush() AS 'Result'; |
对应的这里还有一个卸载的脚本audit_log_filter_uninstall.sql […]
minio通过自己生成证书开启tls访问
minio通过自己生成证书开启tls访问
sysbench生成分区表数据的一些操作
人脑要是有个内存，天都能翻了 mysql有各种各样的表类型，基于此的各种变种更是层出不穷，为了应付这种变化，先前曾经基于sysbench1.0做了一些分区表数据生成lua，分享一些基础的函数组合，留个纪念。虽然改变表结构对tps测试会有影响，但是从数据构造来说还是很方便的，不过这里还有很多r/w的流程没有实现，先挂起吧
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require("custom_luas/tdsqlv2/default/oltp_common") function array_range_value_int(table_size, partition_num, enable_maxvalue) local range = math.floor(table_size / partition_num) local min = 1 local max = range local pt_array = {} for i = 1, partition_num do if i == partition_num then if enable_maxvalue then max = "MAXVALUE" else max = table_size + 1 end pt_array[i] = max else pt_array[i] = max min = max + 1 max = min + range - 1 end end return pt_array end function array_range_value_date(partition_num, partition_func) local pt_array = {} if partition_func == nil or partition_func == "" then for i = 1, partition_num do if partition_func == nil or partition_func == "" or partition_func == "day" then pt_array[i] = os.date("%Y%m%d", os.time() + (i - 1) * 86400) end end end if partition_func == "day" then range = math.floor(31 / partition_num) for i = 1, partition_num do if i ~= partition_num then pt_array[i] = i * range else pt_array[i] = 32 end end end if partition_func == "month" then range = math.floor(12 / partition_num) for i = 1, partition_num do if i ~= partition_num then pt_array[i] = i * range else pt_array[i] = 13 end end end if partition_func == "year" then for i = 1, partition_num do pt_array[i] = os.date("%Y", os.time() + (i - 1) * 31536000) end end if partition_func == "tdsql_month" then year = tonumber(os.date("%Y", os.time())) month = tonumber(os.date("%m", os.time())) for i = 1, partition_num do pt_array[i] = string.format("%04d%02d", year, month) if month + 1 > 12 then year = year + 1 month = 1 else month = month + 1 end end end if partition_func == "tdsql_year" then year = tonumber(os.date("%Y", os.time())) for i = 1, partition_num do pt_array[i] = string.format("%04d", year) year = year + 1 end end return pt_array end function range_rand(pt_array, data_type, pt_func) if data_type == "int" then e = math.random(1, #pt_array) if e == 1 then return math.random(1, pt_array[e] - 1) else if pt_array[e] == "MAXVALUE" then return math.random(pt_array[e - 1], 9223372036854775807) end return math.random(pt_array[e - 1], pt_array[e] - 1) end end if data_type == "date" then if pt_func == nil or pt_func == "" then e = math.random(1, #pt_array) min = -90 if e ~= 1 then min = tonumber(pt_array[e-1]) - tonumber(pt_array[e]) end return getNewDate(pt_array[e], math.random(min, -1), "DAY") end if pt_func == "year" then e = math.random(1, #pt_array) min = -3 if e ~= 1 then min = tonumber(pt_array[e-1]) - tonumber(pt_array[e]) end return string.format("%04d%02d%02d",tonumber(pt_array[e]) + math.random(min, -1), math.random(01,12), math.random(01,28)) end if pt_func == "tdsql_month" then e = math.random(1, #pt_array) min = -3 if e ~= 1 then min = tonumber(pt_array[e-1]) - tonumber(pt_array[e]) end return getNewDate(string.format(pt_array[e].."01"), math.random(min, -1)*31, "DAY") end if pt_func == "tdsql_year" then e = math.random(1, #pt_array) min = -3 if e ~= 1 then min = tonumber(pt_array[e-1]) - tonumber(pt_array[e]) end return string.format("%04d%02d%02d", tonumber(pt_array[e]) + math.random(min, -1), math.random(01,12), math.random(01,28)) end end end function range_int(table_size, partition_num, enable_maxvalue) local sub_sql = "" local pt_array = array_range_value_int(table_size, partition_num, enable_maxvalue) for i = 1, partition_num do if string.len(sub_sql) == 0 then sub_sql = string.format("PARTITION p%d VALUES LESS THAN (%s)", i, pt_array[i]) else sub_sql = string.format("%s, PARTITION p%d VALUES LESS THAN (%s)", sub_sql, i, pt_array[i]) end end return sub_sql end function distributed_range_int(table_size, partition_num, enable_maxvalue) local sub_sql = "" local pt_array = array_range_value_int(table_size, partition_num, enable_maxvalue) for i = 1, partition_num do if string.len(sub_sql) == 0 then sub_sql = string.format("s%d VALUES LESS THAN (%s)", i, pt_array[i]) else sub_sql = string.format("%s, s%d VALUES LESS THAN (%s)", sub_sql, i, pt_array[i]) end end return sub_sql end function range_date(partition_num, partition_func) local sub_sql = "" local pt_array = array_range_value_date(partition_num, partition_func) for i = 1, partition_num do if string.len(sub_sql) == 0 then sub_sql = string.format("PARTITION p%d VALUES LESS THAN (%s)", i, pt_array[i]) else sub_sql = string.format("%s, PARTITION p%d VALUES LESS THAN (%s)", sub_sql, i, pt_array[i]) end end return sub_sql end function distributed_range_date(partition_num, partition_func) local sub_sql = "" local pt_array = array_range_value_date(partition_num, partition_func) for i = 1, partition_num do if string.len(sub_sql) == 0 then sub_sql = string.format("s%d VALUES LESS THAN (%s)", i, pt_array[i]) else sub_sql = string.format("%s, s%d VALUES LESS THAN (%s)", sub_sql, i, pt_array[i]) end end return sub_sql end function array_list_value_int(partition_num, partition_values_num) -- print(string.format("[debug]common.lua/array_list_value_int partition_num: %d, partition_values_num: %d",partition_num, partition_values_num)) local pt_array = {} for i = 1, partition_num do pt_array[i] = {} for j = 1, partition_values_num do while (true) do pt_array[i][j] = j + ((i - 1) * partition_values_num) if pt_array[i][j] ~= nill and string.len(pt_array[i][j]) ~= 0 then break end end end end return pt_array end function array_list_value_date(partition_num, partition_values_num, partition_func) print(string.format("[debug] partition_num: %d, partition_values_num: %d, partition_function: %s", partition_num, partition_values_num, partition_func)) local pt_array = {} --无日期函数 if partition_func == "" or partition_func == nil then for i = 1, partition_num do pt_array[i] = {} for j = 1, partition_values_num do pt_array[i][j] = os.date("%Y%m%d", os.time() + (j - 1) * 86400 + (i - 1) * partition_values_num * 86400) end end return pt_array end -- 只考虑mysql的day，tdsql的变种day模式暂时不考虑 if partition_func == "day" then local range = math.floor(31 / partition_num) local day_idx = 1 for i = 1, partition_num do local val_array = {} if i ~= partition_num then for j = 1, range do val_array[j] = day_idx day_idx = day_idx + 1 end else j = 1 while day_idx <= 31 do val_array[j] = day_idx day_idx = day_idx + 1 j = j + 1 end end pt_array[i] = val_array end return pt_array end if partition_func == "month" then local range = math.floor(12 / partition_num) local day_idx = 1 for i = 1, partition_num do local val_array = {} if i ~= partition_num then for j = 1, range do val_array[j] = day_idx day_idx = day_idx + 1 end else j = 1 while day_idx <= 12 do val_array[j] = day_idx day_idx = day_idx + 1 j = j + 1 end end pt_array[i] = val_array end return pt_array end if partition_func == "year" then for i = 1, partition_num do pt_array[i] = {} for j = 1, partition_values_num do while (true) do pt_array[i][j] = os.date("%Y", os.time() + (j - 1) * 31536000 + (i - 1) * partition_values_num * 31536000) if pt_array[i][j] ~= nill and string.len(pt_array[i][j]) ~= 0 then break end end end end return pt_array end if partition_func == "tdsql_month" then for i=1, partition_num do pt_array[i] = {} for j=1, partition_values_num do pt_array[i][j] = os.date("%Y%m", os.time() + (j - 1) * 86400 * 31 + (i - 1) * partition_values_num * 86400 * 31) end end return pt_array end if partition_func == "tdsql_year" then for i=1, partition_num do pt_array[i] = {} for j=1, partition_values_num do while (true) do pt_array[i][j] = os.date("%Y", os.time() + (j - 1) * 31536000 + (i - 1) * partition_values_num * 31536000) if pt_array[i][j] ~= nill and string.len(pt_array[i][j]) ~= 0 then break end end end end return pt_array end return pt_array end function list_int(partition_num, partition_values_num) local sub_sql = "" local pt_array = array_list_value_int(partition_num, partition_values_num) for i = 1, partition_num do if string.len(sub_sql) == 0 then sub_sql = string.format("PARTITION p%d VALUES IN (%s)", i, table.concat(pt_array[i], ",")) else sub_sql = string.format("%s, PARTITION p%d VALUES IN (%s)", sub_sql, i, table.concat(pt_array[i], ",")) end end return sub_sql end function distributed_list_int(partition_num, partition_values_num) local sub_sql = "" local pt_array = array_list_value_int(partition_num, partition_values_num) for i = 1, partition_num do if string.len(sub_sql) == 0 then sub_sql = string.format("s%d VALUES IN (%s)", i, table.concat(pt_array[i], ",")) else sub_sql = string.format("%s, s%d VALUES IN (%s)", sub_sql, i, table.concat(pt_array[i], ",")) end end return sub_sql end function group_partition_alias(partition_num, group_num) if group_num > partition_num then assert(false, "group_num must be equal or less than partition_num") end array_alis = {} alis_num = math.floor(partition_num/group_num) s_idx=1 for i = 1, group_num do array_alis[i] = {} j = 1 if i ~= group_num then while #array_alis[i] ~= alis_num do array_alis[i][j] = string.format("s%d", s_idx) s_idx = s_idx + 1 j = j + 1 end else while s_idx <= partition_num do array_alis[i][j] = string.format("s%d", s_idx) s_idx = s_idx + 1 j = j + 1 end end end return array_alis end function distributed_list_int_multipartition(partition_num, partition_values_num, group_num) local sub_sql = "" local pt_array = array_list_value_int(group_num, partition_values_num) local array_alis = group_partition_alias(partition_num, group_num) for i = 1, group_num do if string.len(sub_sql) == 0 then sub_sql = string.format("WHEN g%d VALUES IN (%s) THEN tdsql_subdistributed by hash(id) (%s)", i, table.concat(pt_array[i], ","), table.concat(array_alis[i], ",")) else sub_sql = string.format("%s, WHEN g%d VALUES IN (%s) THEN tdsql_subdistributed by hash(id) (%s)", sub_sql, i, table.concat(pt_array[i], ","), table.concat(array_alis[i], ",")) end end return sub_sql end function list_date(partition_num, partition_values_num, pt_func) local sub_sql = "" local pt_array = array_list_value_date(partition_num, partition_values_num, pt_func) --debug -- for i=1, partition_num do -- print(string.format("[debug]pt_array[%d]: %s",i, table.concat(pt_array[i], ","))) -- end for i = 1, partition_num do if string.len(sub_sql) == 0 then sub_sql = string.format("PARTITION p%d VALUES IN (%s)", i, table.concat(pt_array[i], ",")) else sub_sql = string.format("%s, PARTITION p%d VALUES IN (%s)", sub_sql, i, table.concat(pt_array[i], ",")) end -- sub_sql = sub_sql .. string.format("PARTITION p%d VALUES IN (%s)", i, table.concat(pt_array[i], ",")) -- if i ~= partition_num then -- sub_sql = sub_sql .. "," -- end end return sub_sql end function distributed_list_date(partition_num, partition_values_num, partition_func) local sub_sql = "" local pt_array = array_list_value_date(partition_num, partition_values_num, partition_func) for i = 1, partition_num do if string.len(sub_sql) == 0 then sub_sql = string.format("s%d VALUES IN (%s)", i, table.concat(pt_array[i], ",")) else sub_sql = string.format("%s, s%d VALUES IN (%s)", sub_sql, i, table.concat(pt_array[i], ",")) end end return sub_sql end function distributed_list_date_multipartition(partition_num, partition_values_num, group_num) local sub_sql = "" local pt_array = array_list_value_date(group_num, partition_values_num) local array_alis = group_partition_alias(partition_num, group_num) for i = 1, group_num do if string.len(sub_sql) == 0 then sub_sql = string.format("WHEN g%d VALUES IN (%s) THEN tdsql_subdistributed by hash(id) (%s)", i, table.concat(pt_array[i], ","), table.concat(array_alis[i], ",")) else sub_sql = string.format("%s, WHEN g%d VALUES IN (%s) THEN tdsql_subdistributed by hash(id) (%s)", sub_sql, i, table.concat(pt_array[i], ","), table.concat(array_alis[i], ",")) end end return sub_sql end function getNewDate(srcDateTime, interval, dateUnit) --从日期字符串中截取出年月日时分秒 local Y = string.sub(srcDateTime,1,4) local M = string.sub(srcDateTime,5,6) local D = string.sub(srcDateTime,7,8) local H = string.sub(srcDateTime,9,10) local MM = string.sub(srcDateTime,11,12) local SS = string.sub(srcDateTime,13,14) --把日期时间字符串转换成对应的日期时间 local dt1 = os.time{year=Y, month=M, day=D, hour=H,min=MM,sec=SS} --根据时间单位和偏移量得到具体的偏移数据 local ofset=0 if dateUnit =='DAY' then ofset = 60 *60 * 24 * interval elseif dateUnit == 'HOUR' then ofset = 60 *60 * interval elseif dateUnit == 'MINUTE' then ofset = 60 * interval elseif dateUnit == 'SECOND' then ofset = interval end --指定的时间+时间偏移量 local newTime = os.date("%Y%m%d", dt1 + tonumber(ofset)) return newTime end |
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