Net-Snmp Development One

1. add to mib file

1. Find default mib Storage path ：

   net-snmp-config --default-mibdirs

2. Enter default mib Storage path

   cd /mib default path

3. Import new mib file name

   export MIBS=TEST-SMS-MIB

4. Copy the file into mibs Folder

   cp /src…/TEST-SMS-MIB.txt ./TEST-SMS-MIB.txt

5. see mib Whether the document is written correctly （ If there are grammatical errors , There will be errors thrown ）

   snmptranslate -IR -Dparse testMIB

6. View all information under the specified node

   snmptranslate -IR -Tp smsMIB

7. basis mib File generation .C.H file

   Generate content based on your mib Structure to generate , Generally, one table generates one .c .h file The file name is based on mib2c The last assigned name
   for example ( Generate testMIB The table below )： mib2c -c mib2c.iterate.conf testMIB::testTable

If the above steps are too troublesome , You can customize mib Files in net-snmp Of mibs In the folder , And then execute
export MIBS=“+/src…/testMIBS” mib2c -c mib2c.iterate.conf testMIB::testTable

choose 1 perhaps 2, Generate specific code （ See clearly SNMP A hint of ）

( Because the generated code and the running oid Inquire about 、 Set up 、 Based on mib file , So we need to put net-snmp Of mibs In the folder )

2. compile 、 install 、 function

1. Use it directly ./configure Perform reconfiguration
   configure The file in net-snmp Under the path , Download the net-snmp In the development package configure The file may not have permission , Add executable rights .

2. Use ./configure + Parameter configuration

   Example ：./configure --prefix=/usr/local/net-snmp --with-default-snmp-version=“3” --with-sys-contact=“[email protected]” --with-sys-location=“beijing” --with-persistent-directory=“/var/net-snmp” --with-logfile=“/var/log/snmpd.log” --with-libs=“-lpthread” --with-out-mib-modules=“notification-log-mib” --with-mib-modules="test-sms-mib/management/myTestTable "

   explain ：./configure --prefix=/usr/local/net-snmp --with-default-snmp-version=“3” --with-sys-contact=“ Contacts Email” --with-sys-location=“ Address ” --with-persistent-directory=“ Persistent data file path ” --with-logfile=“ Log file path and file name ” --with-libs=“ Link library ” --with-out-mib-modules=“notification-log-mib” --with-mib-modules=“ Private implementation file ( route )”

   perform configure The function of is to generate corresponding makefile file ,–with-out-mib-modules All you add are your private implementations .
   If you execute configure There will be a mistake , Then see clearly –with-out-mib-modules Whether there is a problem in the process .

3. perform make && make install

4. function snmpd -Lo -f

   -Lo Log output to standard output ,-f The logo runs in the foreground

   in addition , In the installation net-snmp On the system , Input snmpd -h The command prompt will be output

   net-snmp Library main Function in snmpd.c Of documents 434 That's ok .

5. Every time the code of the agent is updated , perform ./configure You need to specify modules –with-mib-modules=“ private mib Implementation files ( route )”

2.1 install （ Into new equipment ）

1. Enter into /usr/local/net-snmp, tar -cvf net-snmp.tar *
   Packed net-snmp.tar Download to new device , In new equipment /usr/local/ Create under directory net-snmp,
   hold net-snmp.tar Copied to the /usr/local/net-snmp, perform tar -xvf net-snmp.tar, decompression , Change authority chmod 777 *

2. Set the running environment variable
   In the system etc Under the table of contents , There is one profile file , Add at the end of the file ：PATH=$PATH:$HOME/bin:/usr/local/net-snmp/sbin/
   reboot

3. function snmpd
   snmpd -Lo -f

4. If you lack anything, just pack it , I remember that some will have link library problems , Put the missing ones under the corresponding links .

An updated version

net-snmp The code of is compiled in the Library , You need to recompile after changing the code , Replace the old library .

1. code

2. In the compilation environment ./configure then make && make install

3. Compilation environment lib pack , reference < The first step in installing into a new device >

Don't write about mib Problems with documents , Conventional structures can be used , Can be in Windows Use under platform MG-SOFT MIB Toolset ,
You can refer to MG-SOFT Use the tutorial
https://codeantenna.com/a/6HyBNU7p86

MIB builder Good use of , Use after writing export view Options , Copy the content to the development environment , Import it , Use command snmptranslate -IR -Dparse testMIB
Just check whether there is a problem , If there is a problem, please correct it .

Just learned this open source library , If there's something wrong with the article , Please point out , I will correct it in time .