docker-compose启动时报错已解决 悬赏5积分

用docker启动的 中间莫名服务中断了，然后启动的时候就报了这个错 。
没管它重启了容器又好了，不知道这个是什么原因。

17:34:29.20 INFO ==> Apache: MySQL is ready.
ERROR 1040 (HY000): Too many connections
17:34:29.22 WARN ==> Sentry: Waiting Apache 1 seconds
stop signal received, grace timeout is: 30 seconds
2024-07-03T09:34:29+0000 DEBUG lock received stop signal, acquiring lock/release mutexes
2024-07-03T09:34:29+0000 DEBUG lock acquired stop mutex
2024-07-03T09:34:29+0000 DEBUG lock signal sent to all resources
2024-07-03T09:34:29+0000 ERROR service wait {"error": "signal: interrupt"}
2024-07-03T09:34:29+0000 INFO service service was stopped {"name": "cron_consumer", "command": "php consumer.php"}
2024-07-03T09:34:29+0000 INFO service service was stopped {"name": "cron_consumer", "command": "php consumer.php"}
2024-07-03T09:34:29+0000 ERROR service wait {"error": "signal: interrupt"}
2024-07-03T09:34:29+0000 INFO service service was stopped {"name": "cron_consumer", "command": "php consumer.php"}
2024-07-03T09:34:29+0000 ERROR service wait {"error": "signal: interrupt"}
2024-07-03T09:34:29+0000 INFO service service was stopped {"name": "cron_consumer", "command": "php consumer.php"}
2024-07-03T09:34:29+0000 ERROR service wait {"error": "signal: interrupt"}
2024-07-03T09:34:29+0000 INFO service service was stopped {"name": "cron_scheduler", "command": "php scheduler.php"}
[INFO] RoadRunner server started; version: 2023.3.4, buildtime: 2023-11-09T16:28:16+0000
[INFO] sdnotify: not notified
2024-07-03T09:34:29+0000 INFO service service was started {"name": "cron_consumer", "command": "php consumer.php"}
2024-07-03T09:34:29+0000 INFO service service was started {"name": "cron_consumer", "command": "php consumer.php"}
2024-07-03T09:34:29+0000 INFO service service was started {"name": "cron_consumer", "command": "php consumer.php"}
2024-07-03T09:34:29+0000 INFO service service was started {"name": "cron_consumer", "command": "php consumer.php"}
2024-07-03T09:34:29+0000 INFO service service was started {"name": "cron_scheduler", "command": "php scheduler.php"}
s6-supervise 03-roadrunner: warning: finish script lifetime reached maximum value - sending it a SIGKILL
17:36:11.73
17:36:11.74 Welcome to the Easysoft ZenTao 18.12 container
17:36:11.74 Subscribe to project updates by watching https://www.zentao.net
17:36:11.74 Submit issues and feature requests at https://www.zentao.net/ask.html
17:36:11.74
17:36:11.75 INFO ==> Prepare persistence directories.
17:36:27.09 INFO ==> Render php.ini with environment variables.
17:36:27.11 INFO ==> Check zentao data owner...
17:36:27.63 INFO ==> Render apache sites config with envionment variables.
17:36:27.65 INFO ==> Prepare custom extensions.
17:36:27.67 INFO ==> Check whether the MySQL is available.
17:36:27.69 INFO ==> Check whether the Apache is available.
[INFO] RoadRunner server started; version: 2023.3.4, buildtime: 2023-11-09T16:28:16+0000

根据报错信息看是mysql的连接数到达了上线。
需要调整 mysql 的配置文件（找一下映射给宿主机的 my.conf）中的配置，适当的调整　max_connections 　的值。

查看当前的最大连接数配置：
SHOW VARIABLES LIKE 'max_connections'; -- 在连接工具中执行

在配置文件中修改max_connections = ？ 的值。
需要重启docker后生效。

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