1. Zabbix server failed to start
If your Zabbix server fails to start, please first check whether the configuration file of the Zabbix server is correct, and whether the port used by the Zabbix server is occupied by other processes. You can check if the port is occupied with the following command:
sudo lsof -i :10051
If the port is in use, close the process that is using the port or use another available port.
2. Zabbix server could not connect to the database
If your Zabbix server cannot connect to the database, make sure the database is properly configured and check that the Zabbix server's configuration file has the database connection information set correctly. You can try to test the database connection with the following command:
mysql -h <database_host> -u <database_user> -p <database_name>
Among them, <database_host>, <database_user> and <database_name> represent the database host name, user name and database name respectively.
3. The Zabbix server cannot receive data
If your Zabbix server cannot receive data, make sure that the Zabbix agent is properly configured and check that the Zabbix server's configuration file correctly sets the connection information for the Zabbix agent. You can test Zabbix proxy connection with the following command:
zabbix_get -s <agent_ip_address> -k "system.uname"
Among them, <agent_ip_address> represents the IP address of Zabbix agent.
4. Zabbix server performance problem
4.1 Database performance issues
Zabbix server uses a database to store monitoring data and configuration information. Insufficient database performance may cause Zabbix server to respond slower.
suggestion:
- Optimize database configuration parameters, such as increasing the buffer size, adjusting the number of concurrent connections, etc.;
- Choose an appropriate database engine, such as InnoDB;
- Regularly clean up useless data, such as historical data, event data, etc.;
- Use partitioned tables to reduce the amount of data queried.
4.2 Zabbix server load is too high
If the Zabbix server load is too high, it may cause loss or delay of monitoring data.
suggestion:
- Increase the hardware configuration of the Zabbix server, such as increasing CPU, memory and disk space;
- Adjust the configuration parameters of the Zabbix server, such as increasing the cache size, adjusting the data storage strategy, etc.;
- Use Zabbix proxy to reduce the load on Zabbix server;
- Separate Zabbix server and Zabbix database and deploy them on different servers.
4.3 Too many monitoring items
If the Zabbix server has too many objects to monitor, it may cause the database load to be too high and the response speed to slow down.
suggestion:
- Disable unnecessary monitoring items;
- Use Zabbix proxy to share the load of Zabbix server;
- Use Zabbix agent in active mode to avoid waste of resources caused by repeated connection and disconnection in passive mode.
4.4 High Frequency Monitoring
If the monitoring frequency of the object to be monitored by the Zabbix server is too high, it may cause the response speed of the Zabbix server to slow down.
suggestion:
- Adjust the monitoring frequency of monitoring items to avoid excessive monitoring frequency;
- Use an appropriate data storage strategy to avoid excessive historical data volume;
- Optimize database performance and improve data processing efficiency.
The deployment and operation and maintenance of Zabbix server requires a certain level of technology and experience. If you encounter a problem, please find the solution in time, and pay attention to backup data to avoid data loss.