mysqladmin: [ERROR] unknown variable 'max_connections=10000'.
时间: 2024-03-06 19:47:04 浏览: 27
这个错误是因为你在使用mysqladmin命令时,使用了一个不被识别的变量'max_connections=10000'。可能是你在尝试修改MySQL的最大连接数时出现了问题。你可以检查你的my.cnf配置文件,看看是否有这个变量的设置,或者尝试使用其他命令来修改最大连接数。例如,你可以使用以下命令来修改最大连接数:
```
mysql -u root -p
SET GLOBAL max_connections = 10000;
```
注意,这个命令需要有MySQL的root权限才能执行。如果你不确定如何修改最大连接数,请参考MySQL官方文档或寻求专业人士的帮助。
相关问题
C:\Users\dell\AppData\Local\Programs\Python\Python39\python.exe D:/DevelopSoftware/V_DVP/py_mysql.py Traceback (most recent call last): File "D:\DevelopSoftware\V_DVP\py_mysql.py", line 4, in <module> conn = pymysql.connect(host="127.0.0.1",port=3306,user='root',passwd="mysqladmin",charset='utf8',db='test') File "C:\Users\dell\AppData\Local\Programs\Python\Python39\lib\site-packages\pymysql\connections.py", line 358, in __init__ self.connect() File "C:\Users\dell\AppData\Local\Programs\Python\Python39\lib\site-packages\pymysql\connections.py", line 664, in connect self._request_authentication() File "C:\Users\dell\AppData\Local\Programs\Python\Python39\lib\site-packages\pymysql\connections.py", line 954, in _request_authentication auth_packet = self._read_packet() File "C:\Users\dell\AppData\Local\Programs\Python\Python39\lib\site-packages\pymysql\connections.py", line 772, in _read_packet packet.raise_for_error() File "C:\Users\dell\AppData\Local\Programs\Python\Python39\lib\site-packages\pymysql\protocol.py", line 221, in raise_for_error err.raise_mysql_exception(self._data) File "C:\Users\dell\AppData\Local\Programs\Python\Python39\lib\site-packages\pymysql\err.py", line 143, in raise_mysql_exception raise errorclass(errno, errval) pymysql.err.OperationalError: (1049, "Unknown database 'test'") Process finished with exit code 1
这个错误提示是由于你尝试连接到数据库时出现了问题。具体来说,错误信息显示无法找到名为'test'的数据库。
请确保在连接数据库之前已经创建了名为'test'的数据库。你可以使用MySQL的命令行工具或者图形化界面工具(如phpMyAdmin)来创建数据库。
如果已经创建了数据库,请检查连接参数是否正确,如主机名、端口号、用户名、密码等是否正确配置。
如果问题仍然存在,请提供更多关于你的代码和配置的信息,以便我能够更好地帮助你解决问题。
创建2台系统为centos7.5的云主机,其中一台作为Ansible的母机并命名为ansible,另一台云主机命名为node,通过http服务中的ansible.tar.gz软件包在ansible节点安装Ansible服务;并用这台母机,补全Ansible脚本(在HTTP中下载install_zabbix.tar.gz并解压到/root目录下),补全Ansible脚本使得执行install_zabbix.yaml可以在node节点上完成zabbix服务的安装。 ftp.repo: [zabbix] name=zabbix baseurl=file:///opt/Zabbix enabled=1 gpgcheck=0 [ftp_centos] name=ftp_centos baseurl=ftp://controller/centos enabled=1 gpgcheck=0 [root@ansible ~]# cat install_zabbix.yaml - hosts: zabbix remote_user: root tasks: - name: rm repo shell: rm -f /etc/yum.repos.d/* - name: cp repo copy: src=/etc/yum.repos.d/ftp.repo dest=/etc/yum.repos.d/ - name: cp zabbix copy: src=/opt/zabbix dest=/opt/ - name: yum install mariadb zabbix httpd yum: name=mariadb,mariadb-server,zabbix-server-mysql,zabbix-web-mysql,zabbix-agent,trousers state=present - name: start httpd service: name=httpd state=started enabled=yes - name: start mariadb service: name=mariadb state=started enabled=yes -name: mysql passwd shell: mysqladmin -u root password 123456 - name: grant shell: mysql -u root -p123456 -e "create database zabbix character set utf8 collate utf8_bin;" && mysql -u root -p123456 -e "grant all privileges on zabbix.* to zabbix@'%' identified by 'zabbix';" && mysql -u root -p123456 -e "grant all privileges on zabbix.* to zabbix@localhost identified by 'zabbix';" - name: sql shell: zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz |mysql -u zabbix -pzabbix zabbix - name: cp config copy: src=/etc/zabbix/zabbix_server.conf dest=/etc/zabbix/ - name: start zabbix service: name=zabbix-server state=started
好的,我了解了您的问题。您想创建2台系统为CentOS 7.5的云主机,其中一台作为Ansible的母机并命名为ansible,另一台云主机命名为node,并通过http服务中的ansible.tar.gz软件包在ansible节点安装Ansible服务。然后用这台母机,补全Ansible脚本(在HTTP中下载install_zabbix.tar.gz并解压到/root目录下),补全Ansible脚本使得执行install_zabbix.yaml可以在node节点上完成zabbix服务的安装。
以下是您需要执行的步骤:
1. 在您的云平台上创建2台CentOS 7.5的云主机,分别命名为ansible和node。
2. 在ansible节点上安装Ansible服务,可以通过以下命令完成安装:
```
$ yum install ansible
```
3. 从http服务中下载ansible.tar.gz软件包,并将其解压到ansible节点上的/opt目录下:
```
$ wget http://your_http_server/ansible.tar.gz -P /opt/
$ tar -zxvf /opt/ansible.tar.gz -C /opt/
```
4. 在ansible节点上创建一个名为hosts的文件,并添加node节点的IP地址:
```
$ vi /etc/ansible/hosts
```
添加以下内容:
```
[node]
192.168.1.100
```
5. 从http服务中下载install_zabbix.tar.gz软件包,并将其解压到ansible节点上的/root目录下:
```
$ wget http://your_http_server/install_zabbix.tar.gz -P /root/
$ tar -zxvf /root/install_zabbix.tar.gz -C /root/
```
6. 创建一个名为install_zabbix.yaml的Ansible脚本,并将以下内容复制到脚本中:
```
---
- hosts: node
remote_user: root
tasks:
- name: rm repo
shell: rm -f /etc/yum.repos.d/*
- name: cp repo
copy: src=/etc/yum.repos.d/ftp.repo dest=/etc/yum.repos.d/
- name: cp zabbix
copy: src=/opt/zabbix dest=/opt/
- name: yum install mariadb zabbix httpd
yum:
name: "{{ item }}"
state: present
with_items:
- mariadb
- mariadb-server
- zabbix-server-mysql
- zabbix-web-mysql
- zabbix-agent
- trousers
- name: start httpd
service:
name: httpd
state: started
enabled: yes
- name: start mariadb
service:
name: mariadb
state: started
enabled: yes
- name: mysql passwd
shell: mysqladmin -u root password 123456
- name: grant
shell: mysql -u root -p123456 -e "create database zabbix character set utf8 collate utf8_bin;" && mysql -u root -p123456 -e "grant all privileges on zabbix.* to zabbix@'%' identified by 'zabbix';" && mysql -u root -p123456 -e "grant all privileges on zabbix.* to zabbix@localhost identified by 'zabbix';"
- name: sql
shell: zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -u zabbix -pzabbix zabbix
- name: cp config
copy: src=/etc/zabbix/zabbix_server.conf dest=/etc/zabbix/
- name: start zabbix
service:
name: zabbix-server
state: started
```
7. 执行install_zabbix.yaml脚本,使得在node节点上完成zabbix服务的安装:
```
$ ansible-playbook /root/install_zabbix.yaml
```
以上就是您所需要执行的步骤,祝您顺利完成任务!