1 常见问题/疑难解答赵
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1 Frequently asked questions / Troubleshooting
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1 常见问题/疑难解答赵

常见问题

Q：可以更新或清空队列（如菜单“管理”→“队列”中所展示的队列）？
A:不可以。
Q: 如何从一个数据库迁移到另一个数据库？
A: 只需要转存数据 (对于MySQL, 使用参数 -t 或 —no-create-info), 用Zabbix的schema文件创建新的数据库，并导入数据。
Q: 想用下划线替换监控项key中的所有空格，因为空格只在老版本中起作用，而在3.0版本的监控项key中，空格不是一个有效的标示符（或者因为其它需要大量修改监控项key的场景），应该如何做以及有哪些注意事项？
A: 可以使用数据库更新语句用下划线替换所有出现的空格:
update items set key_=replace(key_,’ ‘,’_‘);
触发器可以使用这些监控项而不需要额外的改动，但是需要修改以下位置的监控项引用:
* Notifications (actions)
* Map element and link labels
* Calculated item formulas
Q: 我的图形中有一些点而不是线或者有一些空白区域，为什么会这样?
A: 数据丢失，这种情况的发生有多种原因——Zabbix数据库的性能问题、Zabbix服务器问题、网络问题、监控设备问题…
Q: Zabbix守护进程无法启动消息监听器，错误信息为: socket() for [[-]:10050] failed with error 22: Invalid argument.
A: 当在一个内核2.6.26或更低内核版本的操作系统上，试图运行编译的版本为2.6.27或更高版本的Zabbix agent时会产生该错误。注意，在这种情况下，静态链接不会起作用，因为早期操作系统内核版本中不支持带SOCK_CLOEXEC标志的socket()系统调用。 ZBX-3395
Q: 尝试使用一个位置参数（如$1）去设置一个命令中灵活的用户参数，但它不起作用。怎么解决这个问题？
A: 使用两个$$符合，像这样 $$1
Q: 在Opera11中，所有的下拉菜单都有一个滚动条，看起来不太美观，为什么会这样呢?
A: 对于Opera11.00和11.01操作系统来说，这是一个bug; 更多信息请访问 Zabbix 问题跟踪。
Q: 如何更改自定义主题中的图形背景颜色?
A: 参照数据库中的graph_theme表和主题帮助。
Q: 调试等级为4时，在zabbix server/proxy日志中出现 “Trapper got [] len 0” 信息，这是什么原因?
A: 很有可能是前端有问题，连接并检查服务是否仍在运行。
Q: 系统时间设置为将来的某一时间，导致没有数据出现。这个问题怎么解决?
A: 清除数据库中的字段 hosts.disable_until*, drules.nextcheck, httptest.nextcheck 的值，并重启zabbix server/proxy。
Q: 在前端使用 {ITEM.VALUE} 宏或者在其他情况下，item的文本类型值无论多大都会被修剪为20个字符，这种情况正常吗?
A: 是正常的,在include/items.inc.php 中有一个硬编码限制，长度最大仅为20个字符。

另见

* zabbix官方问题解决版块

1 Frequently asked questions / Troubleshooting

Frequently asked questions or FAQ.

Q: Can I flush/clear the queue (as depicted in Administration → Queue)?
A: No.
Q: How do I migrate from one database to another?
A: Dump data only (for MySQL, use flag -t or —no-create-info), create the new database using schema files from Zabbix and import the data.
Q: I would like to replace all spaces with underscores in my item keys because they worked in older versions but space is not a valid symbol for an item key in 3.0 (or any other reason to mass-modify item keys). How should I do it and what should i beware of?
A: You may use a database query to replace all occurrences of spaces in item keys with underscores:
update items set key_=replace(key_,’ ‘,’_‘);
Triggers will be able to use these items without any additional modifications, but you might have to change any item references in these locations:
* Notifications (actions)
* Map element and link labels
* Calculated item formulas
Q: My graphs have dots instead of lines or empty areas. Why so?
A: Data is missing. This can happen for a variety of reasons - performance problems on Zabbix database, Zabbix server, network, monitored devices…
Q: Zabbix daemons fail to start up with a message Listener failed with error: socket() for [[-]:10050] failed with error 22: Invalid argument.
A: This error arises at attempt to run Zabbix agent compiled on version 2.6.27 or above on a platform with a kernel 2.6.26 and lower. Note that static linking will not help in this case because it is the socket() system call that does not support SOCK_CLOEXEC flag on earlier kernels. ZBX-3395
Q: I try to set up a flexible user parameter (one that accepts parameters) with a command that uses a positional parameter like $1, but it doesn’t work (uses item parameter instead). How to solve this?
A: Use a double dollar sign like $$1
Q: All dropdowns have a scrollbar and look ugly in Opera 11. Why so?
A: It’s a known bug in Opera 11.00 and 11.01; see Zabbix issue tracker for more information.
Q: How can I change graph background colour in a custom theme?
A: See graph_theme table in the database and theming guide.
Q: With DebugLevel 4 I’m seeing messages “Trapper got [] len 0” in server/proxy log - what’s that?
A: Most likely that is frontend, connecting and checking whether server is still running.
Q: My system had the time set in the future and now no data is coming in. How could this be solved?
A: Clear values of database fields hosts.disable_until*, drules.nextcheck, httptest.nextcheck and restart the server/proxy.
Q: Text item values in frontend (when using {ITEM.VALUE} macro and in other cases) are cut/trimmed to 20 symbols. Is that normal?
A: Yes, there is a hardcoded limit in include/items.inc.php currently.

1 常见问题/疑难解答

1 常见问题/疑难解答 赵

另见

1 Frequently asked questions / Troubleshooting

See also

1 常见问题/疑难解答赵