應用mysqladmin檢測MySQL運轉狀況的教程。本站提示廣大學習愛好者：（應用mysqladmin檢測MySQL運轉狀況的教程）文章只能為提供參考，不一定能成為您想要的結果。以下是應用mysqladmin檢測MySQL運轉狀況的教程正文
mysqladmin是MySQL一個主要的客戶端，最多見的是應用它來封閉數據庫，除此，該敕令還可以懂得MySQL運轉狀況、過程信息、過程殺逝世等。本文引見一下若何應用mysqladmin extended-status(由於沒有"歧義"，所以可使用ext取代)懂得MySQL的運轉狀況。
1. 應用-r/-i參數
應用mysqladmin extended-status敕令可以取得一切MySQL機能目標，即show global status的輸入，不外，由於多半這些目標都是累計值，假如想懂得以後的狀況，則須要停止一次差值盤算，這就是mysqladmin extended-status的一個額定功效，異常適用。默許的，應用extended-status，看到也是累計值，然則，加上參數-r(--relative)，便可以看到各個目標的差值，合營參數-i(--sleep)便可以指定刷新的頻率，那末就有以下敕令：
mysqladmin -uroot -r -i 1 -pxxx extended-status +------------------------------------------+----------------------+ | Variable_name | Value | +------------------------------------------+----------------------+ | Aborted_clients | 0 | | Com_select | 336 | | Com_insert | 243 | ...... | Threads_created | 0 | +------------------------------------------+----------------------+
2. 合營grep應用
合營grep應用，我們就有：
mysqladmin -uroot -r -i 1 -pxxx extended-status \ |grep "Questions\|Queries\|Innodb_rows\|Com_select \|Com_insert \|Com_update \|Com_delete " | Com_delete | 1 | | Com_delete_multi | 0 | | Com_insert | 321 | | Com_select | 286 | | Com_update | 63 | | Innodb_rows_deleted | 1 | | Innodb_rows_inserted | 207 | | Innodb_rows_read | 5211 | | Innodb_rows_updated | 65 | | Queries | 2721 | | Questions | 2721 |
3. 合營簡略的awk應用
應用awk，同時輸入時光信息：
mysqladmin -uroot -p -h127.0.0.1 -P3306 -r -i 1 ext |\
awk -F"|" '{\
if($2 ~ /Variable_name/){\
print " <------------- " strftime("%H:%M:%S") " ------------->";\
}\
if($2 ~ /Questions|Queries|Innodb_rows|Com_select |Com_insert |Com_update |Com_delete |Innodb_buffer_pool_read_requests/)\
print $2 $3;\
}'
<------------- 12:38:49 ------------->
Com_delete 0
Com_insert 0
Com_select 0
Com_update 0
Innodb_buffer_pool_read_requests 589
Innodb_rows_deleted 0
Innodb_rows_inserted 2
Innodb_rows_read 50
Innodb_rows_updated 50
Queries 105
Questions 1
<------------- 12:38:50 ------------->
Com_delete 0
Com_insert 0
Com_select 0
Com_update 0
Innodb_buffer_pool_read_requests 1814
Innodb_rows_deleted 0
Innodb_rows_inserted 0
Innodb_rows_read 8
Innodb_rows_updated 8
Queries 17
Questions 1
4. 合營龐雜一點的awk
橫豎也不簡略了，那就更龐雜一點，如許讓輸入成果更友愛點，由於awk不支撐靜態變量，所以代碼看起來比擬龐雜：
mysqladmin -P3306 -uroot -p -h127.0.0.1 -r -i 1 ext |\
awk -F"|" \
"BEGIN{ count=0; }"\
'{ if($2 ~ /Variable_name/ && ((++count)%20 == 1)){\
print "----------|---------|--- MySQL Command Status --|----- Innodb row operation ----|-- Buffer Pool Read --";\
print "---Time---|---QPS---|select insert update delete| read inserted updated deleted| logical physical";\
}\
else if ($2 ~ /Queries/){queries=$3;}\
else if ($2 ~ /Com_select /){com_select=$3;}\
else if ($2 ~ /Com_insert /){com_insert=$3;}\
else if ($2 ~ /Com_update /){com_update=$3;}\
else if ($2 ~ /Com_delete /){com_delete=$3;}\
else if ($2 ~ /Innodb_rows_read/){innodb_rows_read=$3;}\
else if ($2 ~ /Innodb_rows_deleted/){innodb_rows_deleted=$3;}\
else if ($2 ~ /Innodb_rows_inserted/){innodb_rows_inserted=$3;}\
else if ($2 ~ /Innodb_rows_updated/){innodb_rows_updated=$3;}\
else if ($2 ~ /Innodb_buffer_pool_read_requests/){innodb_lor=$3;}\
else if ($2 ~ /Innodb_buffer_pool_reads/){innodb_phr=$3;}\
else if ($2 ~ /Uptime / && count >= 2){\
printf(" %s |%9d",strftime("%H:%M:%S"),queries);\
printf("|%6d %6d %6d %6d",com_select,com_insert,com_update,com_delete);\
printf("|%6d %8d %7d %7d",innodb_rows_read,innodb_rows_inserted,innodb_rows_updated,innodb_rows_deleted);\
printf("|%10d %11d\n",innodb_lor,innodb_phr);\
}}'
----------|---------|--- MySQL Command Status --|----- Innodb row operation ----|-- Buffer Pool Read --
---Time---|---QPS---|select insert update delete| read inserted updated deleted| logical physical
10:37:13 | 2231| 274 214 70 0| 4811 160 71 0| 4146 0
10:37:14 | 2972| 403 256 84 23| 2509 173 85 23| 4545 0
10:37:15 | 2334| 282 232 66 1| 1266 154 67 1| 3543 0
10:37:15 | 2241| 271 217 66 0| 1160 129 66 0| 2935 0
10:37:17 | 2497| 299 224 97 0| 1141 149 95 0| 3831 0
10:37:18 | 2871| 352 304 74 23| 8202 226 73 23| 6167 0
10:37:19 | 2441| 284 233 82 0| 1099 121 78 0| 3292 0
10:37:20 | 2342| 279 242 61 0| 1083 224 61 0| 3366 0
就如許了，這幾個敕令本身用的比擬多，順手分享出來。
