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+[#]: collector: (lujun9972)
+[#]: translator: ( )
+[#]: reviewer: ( )
+[#]: publisher: ( )
+[#]: url: ( )
+[#]: subject: (Three Methods to Check Uptime of MySQL/MariaDB Database Server on Linux)
+[#]: via: (https://www.2daygeek.com/check-mysql-mariadb-database-server-uptime-linux/)
+[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
+
+Three Methods to Check Uptime of MySQL/MariaDB Database Server on Linux
+======
+
+We all know the purpose of the uptime command in Linux.
+
+This is used to check the **[uptime of the Linux system][1]** and how long the system runs without restarting.
+
+The Linux admin job is to keep the system up and running.
+
+If you want to check how long other services like **[Apache][2]**, MySQL, MariaDB, sftp, etc., are running on Linux, how do you do that?
+
+Each service has their own command to check the uptime of service.
+
+But you can also use other commands for this purpose.
+
+### Method-1: How to Check the Uptime of a MySQL/MariaDB Database Server on Linux Using the ps Command
+
+The **[ps command][3]** stands for process status. This is one of the most basic commands that shows the system running processes with details.
+
+To do so, you first need to find the PID of **[MySQL][4]**/MariaDB using the **[pidof command][5]**.
+
+```
+# pidof mysqld | cut -d" " -f1
+
+2412
+```
+
+Once you have the MySQL/[**MariaDB**][6] PID, use the “etime” option with the ps command and get the uptime.
+
+  * **etime:** elapsed time since the process was started, in the form of [[DD-]hh:]mm:ss.
+
+
+
+```
+# ps -p 2412 -o etime
+
+   ELAPSED
+2-08:49:30
+```
+
+Alternatively, use the “lstart” option with the ps command to get the uptime of a given PID.
+
+```
+# ps -p 2412 -o lstart
+
+                STARTED
+Sat May 2 03:02:15 2020
+```
+
+The MySQL/MariaDB process has been running for 2 days, 03 hours, 02 minutes and 15 seconds.
+
+### Method-2: How to Check the Uptime of a MySQL/MariaDB Database Server on Linux Using the Systemctl Command
+
+The **[systemctl command][7]** is used to control the systemd system and service manager.
+
+systemd is a new init system and system manager, that was adopted by most of Linux distributions now over the traditional SysVinit manager.
+
+```
+# systemctl status mariadb
+or
+# systemctl status mysql
+
+● mariadb.service - MariaDB 10.1.44 database server
+   Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor     preset: disabled)
+  Drop-In: /etc/systemd/system/mariadb.service.d
+           └─migrated-from-my.cnf-settings.conf
+   Active: active (running) since Sat 2020-05-02 03:02:18 UTC; 2 days ago
+     Docs: man:mysqld(8)
+           https://mariadb.com/kb/en/library/systemd/
+  Process: 2448 ExecStartPost=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
+  Process: 2388 ExecStartPre=/bin/sh -c [ ! -e /usr/bin/galera_recovery ] && VAR= || VAR=/usr/bin/galera_recovery; [ $? -eq 0 ] && systemctl set-environment _WSREP_START_POSITION=$VAR || exit 1 (code=exited, status=0/SUCCESS)
+  Process: 2386 ExecStartPre=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, status=0/SUCCESS)
+ Main PID: 2412 (mysqld)
+   Status: "Taking your SQL requests now…"
+   CGroup: /system.slice/mariadb.service
+           └─2412 /usr/sbin/mysqld
+
+May 03 21:41:26 ns2.2daygeek.com mysqld[2412]: 2020-05-03 21:41:26 140328136861440 [Warning] Host name '1.1.1.1' could not be resolved: … not known
+May 04 02:00:46 ns2.2daygeek.com mysqld[2412]: 2020-05-04 2:00:46 140328436418304 [Warning] IP address '1.1.1.1' has been resolved to the host name '2…ss itself.
+May 04 03:01:31 ns2.2daygeek.com mysqld[2412]: 2020-05-04 3:01:31 140328436111104 [Warning] IP address '1.1.1.1' could not be resolved: Temporary fai…resolution
+May 04 04:03:06 ns2.2daygeek.com mysqld[2412]: 2020-05-04 4:03:06 140328136861440 [Warning] IP address '1.1.1.1' could not be resolved: Name or ser… not known
+May 04 07:23:54 ns2.2daygeek.com mysqld[2412]: 2020-05-04 7:23:54 140328435189504 [Warning] IP address '1.1.1.1' could not be resolved: Name or service not known
+May 04 08:03:31 ns2.2daygeek.com mysqld[2412]: 2020-05-04 8:03:31 140328436418304 [Warning] IP address '1.1.1.1' could not be resolved: Name or service not known
+May 04 08:25:56 ns2.2daygeek.com mysqld[2412]: 2020-05-04 8:25:56 140328135325440 [Warning] IP address '1.1.1.1' could not be resolved: Name or service not known
+Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.
+Hint: Some lines were ellipsized, use -l to show in full.
+```
+
+### Method-3: How to Check the Uptime of a MySQL/MariaDB Database Server on Linux Using the MySQLAdmin Command
+
+**[MySQLAdmin][8]** is a command-line utility for MySQL Server that is installed when installing the MySQL package.
+
+The MySQLAdmin client allows you to perform some basic administrative functions on the MySQL server.
+
+It is used to create a database, drop a database, set a root password, change the root password, check MySQL status, verify MySQL functionality, monitor mysql processes, and verify the configuration of the server.
+
+```
+# mysqladmin -u root -pPassword version
+
+mysqladmin Ver 8.42 Distrib 5.7.27, for Linux on x86_64
+Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
+
+Oracle is a registered trademark of Oracle Corporation and/or its
+affiliates. Other names may be trademarks of their respective
+owners.
+
+Server version 5.7.27
+Protocol version 10
+Connection Localhost via UNIX socket
+UNIX socket /var/lib/mysql/mysql.sock
+Uptime: 1 day 10 hours 44 min 13 sec
+```
+
+--------------------------------------------------------------------------------
+
+via: https://www.2daygeek.com/check-mysql-mariadb-database-server-uptime-linux/
+
+作者：[Magesh Maruthamuthu][a]
+选题：[lujun9972][b]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]: https://www.2daygeek.com/author/magesh/
+[b]: https://github.com/lujun9972
+[1]: https://www.2daygeek.com/linux-system-server-uptime-check/
+[2]: https://www.2daygeek.com/check-find-apache-httpd-web-server-uptime-linux/
+[3]: https://www.2daygeek.com/linux-ps-command-find-running-process-monitoring/
+[4]: https://www.2daygeek.com/category/mysql/
+[5]: https://www.2daygeek.com/check-find-parent-process-id-pid-ppid-linux/
+[6]: https://www.2daygeek.com/category/mariadb/
+[7]: https://www.2daygeek.com/sysvinit-vs-systemd-cheatsheet-systemctl-command-usage/
+[8]: https://www.2daygeek.com/linux-mysqladmin-command-administrate-mysql-mariadb-server/