【发布时间】：2017-10-31 19:54:03
【问题描述】：
我想在 mysql 5.6 的 docker 容器中将 max_connections 增加到 1024，该容器托管在 AWS EC2 上。 EC2的实例类型为m4.large。
我通过在my.cnf 中添加max_connections=1024 将max_connections 设置为1024，但是在输入show varialbes like 'max_connections'; mysql 命令时我只看到了214。这是我的my.cnf。：
my.cnf
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
[mysqld_safe]
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
skip-host-cache
skip-name-resolve
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
explicit_defaults_for_timestamp
max_connections=1024
max_connect_errors=100000
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
#bind-address = 127.0.0.1
#log-error = /var/log/mysql/error.log
# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# * IMPORTANT: Additional settings that can override those from this file!
# The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/
我已经尝试过MySQL Max_connections stuck on 214 ? 中提到的解决方案。但这在我的情况下不起作用。以下是我的设置：
普通会话
# here are the per-package modules (the "Primary" block)
session [default=1] pam_permit.so
# here's the fallback if no module succeeds
session requisite pam_deny.so
# prime the stack with a positive return value if there isn't one already;
# this avoids us returning an error just because nothing sets a success code
# since the modules above will each just jump around
session required pam_permit.so
# and here are more per-package modules (the "Additional" block)
session required pam_unix.so
session required pam_limits.so
# end of pam-auth-update config
limits.conf
#<domain> <type> <item> <value>
* soft nofile 65536
* hard nofile 65536
* soft nproc 100000
* hard nproc 127466
我也试过here的解决方案。
mysql.service
[Unit]
Description=MySQL Community Server
After=network.target
[Install]
WantedBy=multi-user.target
[Service]
User=mysql
Group=mysql
PermissionsStartOnly=true
ExecStartPre=/usr/share/mysql/mysql-systemd-start pre
ExecStart=/usr/bin/mysqld_safe
ExecStartPost=/usr/share/mysql/mysql-systemd-start post
TimeoutSec=600
Restart=on-failure
LimitNOFILE=infinity
LimitMEMLOCK=infinity
这个解决方案对我也不起作用。
我通过在ECS的任务定义中使用mountPoints和volumes将上述文件从主机传递到docker容器中。
这是我的 ECS 任务定义的挂载点和卷：
"mountPoints": [
{
"containerPath": "/docker-entrypoint-initdb.d/user.sql",
"sourceVolume": "user",
"readOnly": true
},
{
"containerPath": "/etc/mysql/my.cnf",
"sourceVolume": "mysql_config",
"readOnly": false
},
{
"containerPath": "/etc/security/limits.conf",
"sourceVolume": "limits_conf",
"readOnly": null
},
{
"containerPath": "/etc/systemd/system/mysql.service",
"sourceVolume": "mysql_service",
"readOnly": null
},
{
"containerPath": "/etc/pam.d/common-session",
"sourceVolume": "common_session",
"readOnly": null
}
],
"volumes": [
{
"host": {
"sourcePath": "/home/docker/mysql/user.sql"
},
"name": "user"
},
{
"host": {
"sourcePath": "/home/docker/mysql/my.cnf"
},
"name": "mysql_config"
},
{
"host": {
"sourcePath": "/home/docker/mysql/limits.conf"
},
"name": "limits_conf"
},
{
"host": {
"sourcePath": "/home/docker/mysql/mysql.service"
},
"name": "mysql_service"
},
{
"host": {
"sourcePath": "/home/docker/mysql/common-session"
},
"name": "common_session"
}
],
我还能做些什么让max_connections 达到 1024？
如果您需要了解我的 docker 容器的更多信息，请告诉我。
【问题讨论】：
标签： mysql docker amazon-ec2 database-connection amazon-ecs