一、背景
公司業務使用的是一直Oracle數據庫,因爲多次出現表空間滿的時候不能及時發現,每次都是業務組的人員通知處理,這樣下來DBA這邊就比較被動,所以老大要求監控表空間剩餘大小並且當剩餘過小時能夠及時報警。剛想出來的方案是通過寫腳本獲取表空間的數據,通腳本中使用expect自動輸入密碼登陸oracle用戶然後再登陸數據庫查詢數據返回給zabbix_server。但是由於腳本運行時間大概12秒左右,zabbix獲取數據總是超時,在網上搜索中發現zabbix插件orabbix,原理是通過orabbix登陸被監控主機oracle數據庫,查詢數據。個人認爲非常好用,包括自定義監控項。唯一的麻煩就是需要在配置文件中添加每一個數據庫服務器ip、數據庫用戶、密碼。
二、Orabbix介紹
Orabbix是設計用來爲zabbix監控Oracle的數據庫的插件,它提供多層次的監控,包括可用性和服務器性能的指標。它提供了從衆多Oracle實例採集的有效機制,進而提供此信息的監控和性能指標。然後,您可以利用的zabbix的報告功能爲收集的所有數據,並提供分析。目前的發行版中包含了一組預先定義的模板,包括從初始部署報警和圖形功能。然而,這些可以進行微調,以滿足您額需求和數據/監控要求。
三、Orabbix功能
- DB Version (i.e. Validity of package)
- Archiving (Archive log production with trend analysis)
- Event Waits (Files I/O, single block read, multi-block read, direct path read, SQLNet Messages, Control file I/O, Log Write)
- Hit Ratio (Hit Ratio on Triggers, Tables/Procedures, SQL Area, Body)
- Logical I/O (Server performance on Logical I/O of: Current Read, Consistent Read, Block Change)
- Physical I/O (Redo Writes, Datafile Writes, Datafile Reads)
- PGA
- SGA (In particular; Fixed Buffer, Java Pool, Large Pool, Log Buffer, Shared Poolm Buffer Cache)
- Shared Pool (Pool Dictionary Cache, Pool Free Memory, Library Chache, SQL Area, MISC.)
- Pin Hit Ratio (Oracle library cache pin are caused by contention with the library cache, the area used to store SQL executables for re-use)
- Sessions / Processes
- Sessions (Active Sessions, Inactive Sessions, System Sessions)
- DBSize/DBFileSize (DBSize size of database really used space and of Filesize)
四、Orabbix的安裝配置
其實orabbix只需要安裝在一臺服務器即可,我就選擇安裝在Zabbix Server上,當然上面的jdk是爲orabbix服務的,因爲orabbix就是一個oracle客戶端去查找oracle中的數據,然後傳給zabbix。
關於JDK的安裝可以參加我其他的博文,安裝非常簡單,這裏不再進行介紹。
1、下載Orabbix
建議使用我修改好的軟件,下載地址爲http://down.51cto.com/data/2337373。
unzip Orabbix-1.2.3.zip
mv
orabbix-1.2.3
/usr/local/orabbix
2、調整配置文件
cd
/usr/local/orabbix
cp
init.d
/orabbix
/etc/init
.d/
chmod
+x
/etc/init
.d
/orabbix
chmod
+x
/usr/local/orabbix/run
.sh
3、創建數據庫賬號
首先我們需要在被監控的Oracle上面創建一個賬號,用於zabbix的數據獲取,在oracle的sqlplus裏面執行。
CREATE
USER
ZABBIX
IDENTIFIED
BY
"zabbix"
DEFAULT
TABLESPACE SYSTEM
TEMPORARY
TABLESPACE
TEMP
PROFILE
DEFAULT
ACCOUNT UNLOCK;
#2 Roles
for
ZABBIX
GRANT
CONNECT
TO
ZABBIX;
GRANT
RESOURCE
TO
ZABBIX;
ALTER
USER
ZABBIX
DEFAULT
ROLE
ALL
;
#5 System
Privileges
for
ZABBIX
GRANT
SELECT
ANY
TABLE
TO
ZABBIX;
GRANT
CREATE
SESSION
TO
ZABBIX;
GRANT
SELECT
ANY
DICTIONARY
TO
ZABBIX;
GRANT
UNLIMITED TABLESPACE
TO
ZABBIX;
GRANT
SELECT
ANY
DICTIONARY
TO
ZABBIX;
如果我們的數據庫是Oracle 11g,我們還需要執行下面的語句。
exec
dbms_network_acl_admin.create_acl(acl =>
'resolve.xml'
,description =>
'resolve acl'
, principal =>
'ZABBIX'
, is_grant =>
true
, privilege =>
'resolve'
);
exec
dbms_network_acl_admin.assign_acl(acl =>
'resolve.xml'
, host =>
'*'
);
commit
;
4、配置config.props
config.props是Orabbix的配置文件,路徑爲/usr/local/orabbix/conf。
cp
config.props.sample config.props
打開配置文件,修改後內容如下:
#comma separed list of Zabbix servers
ZabbixServerList=ZabbixServer1
ZabbixServer1.Address=10.0.0.14
ZabbixServer1.Port=10051
#pidFile
OrabbixDaemon.PidFile=.
/logs/orabbix
.pid
#frequency of item's refresh
OrabbixDaemon.Sleep=300
#MaxThreadNumber should be >= than the number of your databases
OrabbixDaemon.MaxThreadNumber=100
#put here your databases in a comma separated list
DatabaseList=10.0.2.64,10.0.2.63
#Configuration of Connection pool
#if not specified Orabbis is going to use default values (hardcoded)
#Maximum number of active connection inside pool
DatabaseList.MaxActive=10
#The maximum number of milliseconds that the pool will wait
#(when there are no available connections) for a connection to be returned
#before throwing an exception, or <= 0 to wait indefinitely.
DatabaseList.MaxWait=100
DatabaseList.MaxIdle=1
#define here your connection string for each database
10.0.2.64.Url=jdbc:oracle:thin:@10.0.2.64:1521:unicode
10.0.2.64.User=zabbix
10.0.2.64.Password=zabbix
#Those values are optionals if not specified Orabbix is going to use the general values
10.0.2.64.MaxActive=10
10.0.2.64.MaxWait=100
10.0.2.64.MaxIdle=1
10.0.2.64.QueryListFile=.
/conf/query
.props
#define here your connection string for each database
10.0.2.63.Url=jdbc:oracle:thin:@10.0.2.63:1521:orcl
10.0.2.63.User=zabbix
10.0.2.63.Password=zabbix
#Those values are optionals if not specified Orabbix is going to use the general values
10.0.2.63.MaxActive=10
10.0.2.63.MaxWait=100
10.0.2.63.MaxIdle=1
10.0.2.63.QueryListFile=.
/conf/query
.props
備註:
-
ZabbixServerList:可以設置多個,用","進行分割;
-
DatabaseList:可以設置多個被監控的Oracle數據庫服務器,用","進行分割,該名稱要和zabbix server界面中的Host name保持一致,該配置文件中後續所引用的設定都以該名稱爲準。
五、啓動Orabbix服務
service orabbix start
六、配置Zabbix添加監控
1、導入模板
模板在軟件包的template目錄下面,全部導入即可。
Configuration-->Templates-->Import