linux下查看mysql的當前鏈接狀況

時間 2019-12-12

標籤 linux 查看 mysql 當前鏈接狀況欄目 Linux 简体版

原文原文鏈接

首先須要登陸到mysql中。java

總共有三個命令：mysql

一、status

mysql> status

--------------

mysql  Ver 14.14 Distrib 5.5.30, for Linux (x86_64) using readline 5.1

Connection id:          96

Current database:

Current user:           root@localhost

SSL:                    Not in use

Current pager:          stdout

Using outfile:          ''

Using delimiter:        ;

Server version:         5.5.30 MySQL Community Server (GPL)

Protocol version:       10

Connection:             Localhost via UNIX socket

Server characterset:    latin1

Db     characterset:    latin1

Client characterset:    utf8

Conn.  characterset:    utf8

UNIX socket:            /var/lib/mysql/mysql.sock

Uptime:                 7 hours 58 min 1 sec

Threads: 11 Questions: 16093 Slow queries: 0 Opens: 70 Flush tables: 1 Open tables: 41 Queries per second avg: 0.561

--------------

二、show processlist（查看當前用戶的鏈接，root用戶查看全部的）

mysql> show processlist;

+----+------+-----------------+-------+---------+------+-------+------------------+

| Id | User | Host            | db    | Command | Time | State | Info             |

+----+------+-----------------+-------+---------+------+-------+------------------+

|  1 | root | localhost:40214 | b3log | Sleep   |   18 |       | NULL             |

|  2 | root | localhost:40215 | b3log | Sleep   |   18 |       | NULL             |

|  3 | root | localhost:40216 | b3log | Sleep   |   18 |       | NULL             |

|  4 | root | localhost:40217 | b3log | Sleep   |   18 |       | NULL             |

|  5 | root | localhost:40218 | b3log | Sleep   |   18 |       | NULL             |

|  6 | root | localhost:40219 | b3log | Sleep   |   18 |       | NULL             |

|  7 | root | localhost:40220 | b3log | Sleep   |   18 |       | NULL             |

|  8 | root | localhost:40221 | b3log | Sleep   |   18 |       | NULL             |

|  9 | root | localhost:40222 | b3log | Sleep   |   18 |       | NULL             |

| 10 | root | localhost:40223 | b3log | Sleep   |   18 |       | NULL             |

| 97 | root | localhost       | NULL  | Query   |    0 | NULL  | show processlist |

+----+------+-----------------+-------+---------+------+-------+------------------+

11 rows in set (0.00 sec)

三、show status

| Qcache_queries_in_cache                  | 0 |

| Qcache_total_blocks                      | 0 |

| Queries                                  | 16137 |

| Questions                                | 2 |

| Rpl_status                               | AUTH_MASTER |

| Select_full_join                         | 0 |

| Select_full_range_join                   | 0 |

| Select_range                             | 0 |

| Select_range_check                       | 0 |

| Select_scan                              | 0 |

| Slave_heartbeat_period                   | 0.000 |

| Slave_open_temp_tables                   | 0 |

| Slave_received_heartbeats                | 0 |

| Slave_retried_transactions               | 0 |

| Slave_running                            | OFF         |

| Slow_launch_threads                      | 0 |

| Slow_queries                             | 0 |

| Sort_merge_passes                        | 0 |

| Sort_range                               | 0 |

| Sort_rows                                | 0 |

| Sort_scan                                | 0 |

| Ssl_accept_renegotiates                  | 0 |

| Ssl_accepts                              | 0 |

| Ssl_callback_cache_hits                  | 0 |

| Ssl_cipher                               |             |

| Ssl_cipher_list                          |             |

| Ssl_client_connects                      | 0 |

| Ssl_connect_renegotiates                 | 0 |

| Ssl_ctx_verify_depth                     | 0 |

| Ssl_ctx_verify_mode                      | 0 |

| Ssl_default_timeout                      | 0 |

| Ssl_finished_accepts                     | 0 |

| Ssl_finished_connects                    | 0 |

| Ssl_session_cache_hits                   | 0 |

| Ssl_session_cache_misses                 | 0 |

| Ssl_session_cache_mode                   | NONE        |

| Ssl_session_cache_overflows              | 0 |

| Ssl_session_cache_size                   | 0 |

| Ssl_session_cache_timeouts               | 0 |

| Ssl_sessions_reused                      | 0 |

| Ssl_used_session_cache_entries           | 0 |

| Ssl_verify_depth                         | 0 |

| Ssl_verify_mode                          | 0 |

| Ssl_version                              |             |

| Table_locks_immediate                    | 2135 |

| Table_locks_waited                       | 0 |

| Tc_log_max_pages_used                    | 0 |

| Tc_log_page_size                         | 0 |

| Tc_log_page_waits                        | 0 |

| Threads_cached                           | 0 |

| Threads_connected  (鏈接數)               | 11 |

| Threads_created                          | 98 |

| Threads_running                          | 1 |

| Uptime                                   | 28851 |

| Uptime_since_flush_status                | 28851 |

+------------------------------------------+-------------+

312 rows in set (0.00 sec)sql

若是不能看到所有，按ctrl + pageup或pagedown，進行上下翻頁緩存

Aborted_clients 因爲客戶沒有正確關閉鏈接已經死掉，已經放棄的鏈接數量。服務器

Aborted_connects 嘗試已經失敗的MySQL服務器的鏈接的次數。session

Connections 試圖鏈接MySQL服務器的次數。socket

Created_tmp_tables 當執行語句時，已經被創造了的隱含臨時表的數量。線程

Delayed_insert_threads 正在使用的延遲插入處理器線程的數量。日誌

Delayed_writes 用INSERT DELAYED寫入的行數。code

Delayed_errors 用INSERT DELAYED寫入的發生某些錯誤(可能重複鍵值)的行數。

Flush_commands 執行FLUSH命令的次數。

Handler_delete 請求從一張表中刪除行的次數。

Handler_read_first 請求讀入表中第一行的次數。