Cacti磁盘使用百分比

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　　http://blog.chinaunix.net/uid-1886735-id-2810683.html
　　http://bbs.chinaunix.net/thread-2090625-1-1.html
　　cacti 监控磁盘按使用率报警接入方法 (2007-11-28 11:35)

分类： Monitor　　


　　vim include/config_arrays.php

$custom_data_source_types = array(         "CURRENT_DATA_SOURCE" => "Current Graph Item Data Source",         "ALL_DATA_SOURCES_NODUPS" => "All Data Sources (Don't Include Duplicates)",         "ALL_DATA_SOURCES_DUPS" => "All Data Sources (Include Duplicates)",         "CURRENT_DS_MINIMUM_VALUE" => "Current Data Source Item: Minimum Value",         "SIMILAR_DATA_SOURCES_NODUPS" => "All Similar Data Sources (Don't Include Duplicates)",         "CURRENT_DS_MAXIMUM_VALUE" => "Current Data Source Item: Maximum Value",         "CURRENT_GRAPH_MINIMUM_VALUE" => "Graph: Lower Limit",         "CURRENT_GRAPH_MAXIMUM_VALUE" => "Graph: Upper Limit",         "VALUE_OF_HDD_TOTAL" => "Value of hdd_total data source");

vim plugins/thold/thold-functions.php

switch ($cdef['value']) {                                case 'CURRENT_DATA_SOURCE':                                   $cdef['value'] = $oldvalue; // get_current_value($rra, $ds, 0);                                   break;                                case 'VALUE_OF_HDD_TOTAL':                                   $cdef['value'] = get_current_value($rra, 'hdd_total', 0);                                   break;

在cacti界面添加 cdef模块

cdef=CURRENT_DATA_SOURCE,100,*,VALUE_OF_HDD_TOTAL,/

最后添加监控磁盘模块时候选择hdd_used 就OK拉！
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http://bbs.chinaunix.net/thread-1167896-1-1.html

本文本自王先进's blog，原文链接http://www.wangxianjin.cn/?action=show&id=83转载请注明出处。 cacti本身的模板只可以监控硬盘的使用大小，而不能监控使用非分率，所以我们要自定义cdef来监控硬盘使用率，并借助thold插件实现报警功能。网上找的资料都是在cacti.0.8.6版上实现的，而我用的是cacti.0.8.7版。因此，根据实际情况做如下改动： 在cacti目录下，vi global_arrays.php 搜索custom_data_source_types，修改这一段如下： $custom_data_source_types = array( "CURRENT_DATA_SOURCE" => "Current Graph Item Data Source", "ALL_DATA_SOURCES_NODUPS" => "All Data Sources (Don't Include Duplicates)", "ALL_DATA_SOURCES_DUPS" => "All Data Sources (Include Duplicates)", "SIMILAR_DATA_SOURCES_NODUPS" => "All Similar Data Sources (Don't Include Duplicates)", "SIMILAR_DATA_SOURCES_DUPS" => "All Similar Data Sources (Include Duplicates)", "CURRENT_DS_MINIMUM_VALUE" => "Current Data Source Item: Minimum Value", "CURRENT_DS_MAXIMUM_VALUE" => "Current Data Source Item: Maximum Value", "CURRENT_GRAPH_MINIMUM_VALUE" => "Graph: Lower Limit", "CURRENT_GRAPH_MAXIMUM_VALUE" => "Graph: Upper Limit", "VALUE_OF_HDD_TOTAL" => "Value of hdd_total data source"); 在cacti界面的Graph Management-cdefs新建cdef模块，名字自己起，添加字段如下： Item #1 Special Data Source: CURRENT_DATA_SOURCE Item #2 Custom String: 100 Item #3 Operator: * Item #4 Special Data Source: VALUE_OF_HDD_TOTAL Item #5 Operator: / 也就是说 cdef=CURRENT_DATA_SOURCE,100,*,VALUE_OF_HDD_TOTAL,/ 这样就可以在Threshold Templates里面添加监控硬盘的模块了，我添加的是Host MIB - Hard Drive Space ，最后在Threshold CDEF里面选择刚自定义的cdef，这样就可以正常监控硬盘使用率了。

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http://bbs.chinaunix.net/thread-2018771-1-1.html

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http://seo.wangxianjin.com/?p=107
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http://forums.cacti.net/viewtopic.php?t=20486
Hi,
i wanted to make a threshold based on % of used disk space (i saw few suggestions about this but none of them worked for me). However, i was able to do it after little modifications of cacti and threshold plugin
I'm polling disk total capacity and present usage using standard template Host MIB - Available Disk Space (screen01)
Step 1: I created new CDEF (screen02)
cdef=CURRENT_DATA_SOURCE,100,*,VALUE_OF_HDD_TOTAL,/
To get 'VALUE_OF_HDD_TOTAL' please add one line to file include/config_arrays.php

Code:
$custom_data_source_types = array(
        "CURRENT_DATA_SOURCE" => "Current Graph Item Data Source",
        "ALL_DATA_SOURCES_NODUPS" => "All Data Sources (Don't Include Duplicates)",
        "ALL_DATA_SOURCES_DUPS" => "All Data Sources (Include Duplicates)",
        "CURRENT_DS_MINIMUM_VALUE" => "Current Data Source Item: Minimum Value",
        "SIMILAR_DATA_SOURCES_NODUPS" => "All Similar Data Sources (Don't Include Duplicates)",
        "CURRENT_DS_MAXIMUM_VALUE" => "Current Data Source Item: Maximum Value",
        "CURRENT_GRAPH_MINIMUM_VALUE" => "Graph: Lower Limit",
        "CURRENT_GRAPH_MAXIMUM_VALUE" => "Graph: Upper Limit",
        "VALUE_OF_HDD_TOTAL" => "Value of hdd_total data source");
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ add this line
Step 2: After adding new CDEF, one more modification to file plugins/thold/thold-functions.php is needed:

Code:
                              switch ($cdef['value']) {
                               case 'CURRENT_DATA_SOURCE':
                                  $cdef['value'] = $oldvalue; // get_current_value($rra, $ds, 0);
                                  break;
                               case 'VALUE_OF_HDD_TOTAL':
                                  $cdef['value'] = get_current_value($rra, 'hdd_total', 0);
                                  break;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ add 3 last lines

Step 3: After that, i created threshold template for data field "hdd_used " (screen03)
Step 4: At the bottom, select CDEF you created in step 1 ("Threshold CDEF Apply this CDEF before returning the data"). Save and wait 2 polling cycles. After that you should see current value in %! (screen04)
Forgive me my poor english.

Attachments:

http://forums.cacti.net/download/file.php?id=8727&sid=1660d7d7ff909911d276cd15443f9e4b screen01.GIF [ 30.82 KiB | Viewed 16370 times ]

http://forums.cacti.net/download/file.php?id=8728&sid=1660d7d7ff909911d276cd15443f9e4b screen02.GIF [ 8.68 KiB | Viewed 16370 times ]

http://forums.cacti.net/download/file.php?id=8729&sid=1660d7d7ff909911d276cd15443f9e4b screen03.GIF [ 8.37 KiB | Viewed 16370 times ]

http://forums.cacti.net/download/file.php?id=8730&sid=1660d7d7ff909911d276cd15443f9e4b screen04.GIF [ 42.11 KiB | Viewed 16370 times ]

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　　http://north-m.blogspot.com/2011/11/cacti_4861.html
修改cacti脚本, 增加磁盘使用百分比



最近在部署cacti用来monitor各数据库服务器, 想要设置一个磁盘空间报警, 当分区满90的时候发alert mail, 但是看了现在已经设置的monitor disk space的data source, 里面并没有类似于used_percent项, 又懒得再去找其他的template, 变自己修改已经有的脚本来实现.
首先找到对应的data query:
http://onexin.iyunv.com/source/plugin/onexin_bigdata/https://lh5.googleusercontent.com/oIViFfSroqe-6rjd2Dm1gM5M4ovemfxznFdPmMX_PM3YIcagD7iDfX01_KK1DHYMND8F0bham7nkiX8ezlhtsSsQqfz5OI_UNcTsmfckwT0MM1e2wys
我们知道了这个data query对应的xml文件, 于是找到这个xml文件, 编辑, 在field中增加一项:

<fields>                 <hrStorageIndex>                         <name>Index</name>                         <direction>input</direction>                         <query_name>index</query_name>                 </hrStorageIndex> ......                                <hrStorageUsedPercent>                         <name>Used Percent</name>                         <direction>output</direction>                         <query_name>used_percent</query_name>                 </hrStorageUsedPercent>

从这个文件中我们也可以看出, 所用的php文件:

<script_path>|path_cacti|/scripts/ss_host_disk.php</script_path>

对应编辑这个php文件(不会php, 只能看着改了):

if ($cmd == "index") { $return_arr = ss_host_disk_reindex(cacti_snmp_walk($hostname, $snmp_community, $oids["index"], $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol, $snmp_priv_passphrase, $snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, $ping_retries, $max_oids, SNMP_POLLER)); for ($i=0;($i<sizeof($return_arr));$i++) { print $return_arr[$i] . "\n"; } }elseif ($cmd == "num_indexes") { $return_arr = ss_host_disk_reindex(cacti_snmp_walk($hostname, $snmp_community, $oids["index"], $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol, $snmp_priv_passphrase, $snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, $ping_retries, $max_oids, SNMP_POLLER)); print sizeof($return_arr); }elseif ($cmd == "query") { $arg = $arg1; $arr_index = ss_host_disk_reindex(cacti_snmp_walk($hostname, $snmp_community, $oids["index"], $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol, $snmp_priv_passphrase, $snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, $ping_retries, $max_oids, SNMP_POLLER)); $arr = ss_host_disk_reindex(cacti_snmp_walk($hostname, $snmp_community, $oids[$arg], $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol, $snmp_priv_passphrase, $snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, $ping_retries, $max_oids, SNMP_POLLER)); for ($i=0;($i<sizeof($arr_index));$i++) { print $arr_index[$i] . "!" . $arr[$i] . "\n"; } }elseif ($cmd == "get") { $arg = $arg1; $index = $arg2; if ($arg == "used_percent") {     $sau_used = preg_replace("/[^0-9]/i", "", db_fetch_cell("select field_value from host_snmp_cache where host_id=$host_id and field_name='hrStorageAllocationUnits' and snmp_index='$index'")); $snmp_used = cacti_snmp_get($hostname, $snmp_community, $oids["used"] . ".$index", $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol,$snmp_priv_passphrase,$snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, $ping_retries, SNMP_POLLER); if($snmp_data_used<0){ $used = (abs($snmp_used) + 2147483647) * $sau_used; } else { $used = $snmp_used * $sau_used; } $sau_total = preg_replace("/[^0-9]/i", "", db_fetch_cell("select field_value from host_snmp_cache where host_id=$host_id and field_name='hrStorageAllocationUnits' and snmp_index='$index'")); $snmp_total = cacti_snmp_get($hostname, $snmp_community, $oids["total"] . ".$index", $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol,$snmp_priv_passphrase,$snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, $ping_retries, SNMP_POLLER); if($snmp_total<0){ $total = (abs($snmp_total) + 2147483647) * $sau_total; } else { $total = $snmp_total * $sau_total; } return number_format($used * 100 / $total, 2); } if (($arg == "total") || ($arg == "used")) { $sau = preg_replace("/[^0-9]/i", "", db_fetch_cell("select field_value from host_snmp_cache where host_id=$host_id and field_name='hrStorageAllocationUnits' and snmp_index='$index'")); $snmp_data = cacti_snmp_get($hostname, $snmp_community, $oids[$arg] . ".$index", $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol,$snmp_priv_passphrase,$snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, $ping_retries, SNMP_POLLER); if($snmp_data<0){ return (abs($snmp_data) + 2147483647) * $sau; } else { return $snmp_data * $sau; } }else{ return cacti_snmp_get($hostname, $snmp_community, $oids[$arg] . ".$index", $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol,$snmp_priv_passphrase,$snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, $ping_retries, SNMP_POLLER); } }

接下来就可以到cacti中操作了:
在data template中增加一个:
http://onexin.iyunv.com/source/plugin/onexin_bigdata/https://lh4.googleusercontent.com/euGWZamdm7pDc5BC4xygHOiLJ5KF7bu0v7-A29n1Qlz2_AwfEXSt4HYehwq1YSho_Wbju27dbhOz-C0iMT31pNHchp6LKbOA86OPwyHfTe_5P9DCLlo
在data query中关联graph template以及 date template的地方:
http://onexin.iyunv.com/source/plugin/onexin_bigdata/https://lh4.googleusercontent.com/h5xMvQ1m41cqE71hjlx3iNGO2iTVvqSDYa7CUywYoEmtXBkDxL8qb2zWCPT9TGdkU6GuIwapq3iUsBhyt7v7YUJ3KsTYEO-rnRrAIM-fhrpQ5XPuHKw
然后修改graph template(其实应该没有必要这么加, 因为这个百分比相对于磁盘大小来说实在太小了, 在同一张图里面根本显示不出来, 只是我现在没研究透, 就全加了):
http://onexin.iyunv.com/source/plugin/onexin_bigdata/https://lh5.googleusercontent.com/eoWXg-Pzu-qJqUBruApKdNIJsnuunJ4NBINMpfEB7lroHgjfz3og7fP_qW5wW-JtOUfJKLY-Wb6Ys1uKHrng-iO5iUHPnLSPxYApFDI5RzfbPQdPWBY
然后我们就可以添加threshold了.

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http://hi.baidu.com/shulei1234/blog/item/19b5b63e8c17e6e054e723bf.html





Cacti监控磁盘
2010-05-07 0:06

1 cacti 模板 snmpdiskio-0.94    wget http://forums.cacti.net/download.php?id=5233 2 修改/etc/snmp/snmpd.conf加入下面几行, 记得重启snmpd    exec .1.3.6.1.4.1.2021.54 hdNum /usr/local/bin/snmpdiskio hdNum    exec .1.3.6.1.4.1.2021.55 hdIndex /usr/local/bin/snmpdiskio hdIndex    exec .1.3.6.1.4.1.2021.56 hdDescr /usr/local/bin/snmpdiskio hdDescr    exec .1.3.6.1.4.1.2021.57 hdInBlocks /usr/local/bin/snmpdiskio hdInBlocks    exec .1.3.6.1.4.1.2021.58 hdOutBlocks /usr/local/bin/snmpdiskio hdOutBlocks 3 将下载的snmpdisjio.tar.gz解开    tar zxvf snmpdiskio-0.9.4.tar.gz 4 将 cp snmpdiskio /usr/local/bin/.      cp partition.xml /cacti目录/resource/snmp_queries/. 5 进入cacti,导入模板 cacti-->console--->Import/Export--->Import Templates "cacti_data_query_snmp_disk_statistics.xml    cacti_graph_template_disk_io_bytessec.xml" 　　6 进入cacti,建立一个新Graph 　　From:http://blog.chinaunix.net/u/2914/showart_1981487.html