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|
# sila-snmp
This project containt two subprojects:
- [sila-snmp-agent](#sila-snmp-agent)
- [snmpcfg - DBus service for manage snmp configuration](#snmpcfg)
## sila-snmp-agent
This is a subagent for the original net-snmp daemon.
It queries DBus for values of available sensors, inventory items and some
other stuff, and exports their actual values over SNMP.
### SILA-MIB.txt
File SILA-MIB.txt describe a struc of exported data.
This file can be found at OpenBMC hosts in folder `/usr/share/snmp/mibs` and may be fetched from OpenBMC host over http.
```shell
$ mkdir ~/.snmp/mibs
$ cd ~/.snmp/mibs
$ wget --no-check-certificate https://<IP-addres-of-BMC-host>/mibs/SILA-MIB.txt
```
### Basic SNMP
This module export a host power state field and tree tables of sensors values.
```shell
$ snmptranslate -Tp -IR SILA-MIB::sila
+--sila(49769)
|
+--silaNotifications(0)
| |
| +--silaHostPowerStateNotification(1)
| +--silaTempSensorStateNotification(2)
| +--silaVoltSensorStateNotification(3)
| +--silaTachSensorStateNotification(4)
| +--silaCurrSensorStateNotification(5)
| +--silaPwrSensorStateNotification(6)
| +--silaInventoryItemNotification(7)
|
+--silaSensors(1)
| |
| +-- -R-- EnumVal silaHostPowerState(1)
| | Values: unknown(-1), off(0), on(1)
| |
| +--silaTempSensorsTable(2)
| | |
| | +--silaTempSensorsEntry(1)
| | | Index: silaTempSensorName
| | |
| | +-- -R-- String silaTempSensorName(1)
| | | Size: 1..32
| | +-- -R-- Integer32 silaTempSensorValue(2)
| | | Textual Convention: Degrees
| | +-- -R-- Integer32 silaTempSensorWarnLow(3)
| | | Textual Convention: Degrees
| | +-- -R-- Integer32 silaTempSensorWarnHigh(4)
| | | Textual Convention: Degrees
| | +-- -R-- Integer32 silaTempSensorCritLow(5)
| | | Textual Convention: Degrees
| | +-- -R-- Integer32 silaTempSensorCritHigh(6)
| | | Textual Convention: Degrees
| | +-- -R-- EnumVal silaTempSensorState(7)
| | Textual Convention: SensorState
| | Values: disabled(0), normal(1), warningLow(2), warningHigh(3), criticalLow(4), criticalHigh(5)
| |
| +--silaVoltSensorsTable(3)
| | |
| | +--silaVoltSensorsEntry(1)
| | | Index: silaVoltSensorName
| | |
| | +-- -R-- String silaVoltSensorName(1)
| | | Size: 1..32
| | +-- -R-- Integer32 silaVoltSensorValue(2)
| | | Textual Convention: Voltage
| | +-- -R-- Integer32 silaVoltSensorWarnLow(3)
| | | Textual Convention: Voltage
| | +-- -R-- Integer32 silaVoltSensorWarnHigh(4)
| | | Textual Convention: Voltage
| | +-- -R-- Integer32 silaVoltSensorCritLow(5)
| | | Textual Convention: Voltage
| | +-- -R-- Integer32 silaVoltSensorCritHigh(6)
| | | Textual Convention: Voltage
| | +-- -R-- EnumVal silaVoltSensorState(7)
| | Textual Convention: SensorState
| | Values: disabled(0), normal(1), warningLow(2), warningHigh(3), criticalLow(4), criticalHigh(5)
| |
| +--silaTachSensorsTable(4)
| | |
| | +--silaTachSensorsEntry(1)
| | | Index: silaTachSensorName
| | |
| | +-- -R-- String silaTachSensorName(1)
| | | Size: 1..32
| | +-- -R-- Integer32 silaTachSensorValue(2)
| | | Textual Convention: RPMS
| | +-- -R-- Integer32 silaTachSensorWarnLow(3)
| | | Textual Convention: RPMS
| | +-- -R-- Integer32 silaTachSensorWarnHigh(4)
| | | Textual Convention: RPMS
| | +-- -R-- Integer32 silaTachSensorCritLow(5)
| | | Textual Convention: RPMS
| | +-- -R-- Integer32 silaTachSensorCritHigh(6)
| | | Textual Convention: RPMS
| | +-- -R-- EnumVal silaTachSensorState(7)
| | Textual Convention: SensorState
| | Values: disabled(0), normal(1), warningLow(2), warningHigh(3), criticalLow(4), criticalHigh(5)
| |
| +--silaCurrSensorsTable(5)
| | |
| | +--silaCurrSensorsEntry(1)
| | | Index: silaCurrSensorName
| | |
| | +-- -R-- String silaCurrSensorName(1)
| | | Size: 1..32
| | +-- -R-- Integer32 silaCurrSensorValue(2)
| | | Textual Convention: Current
| | +-- -R-- Integer32 silaCurrSensorWarnLow(3)
| | | Textual Convention: Current
| | +-- -R-- Integer32 silaCurrSensorWarnHigh(4)
| | | Textual Convention: Current
| | +-- -R-- Integer32 silaCurrSensorCritLow(5)
| | | Textual Convention: Current
| | +-- -R-- Integer32 silaCurrSensorCritHigh(6)
| | | Textual Convention: Current
| | +-- -R-- EnumVal silaCurrSensorState(7)
| | Textual Convention: SensorState
| | Values: disabled(0), normal(1), warningLow(2), warningHigh(3), criticalLow(4), criticalHigh(5)
| |
| +--silaPowerSensorsTable(6)
| |
| +--silaPowerSensorsEntry(1)
| | Index: silaPowerSensorName
| |
| +-- -R-- String silaPowerSensorName(1)
| | Size: 1..32
| +-- -R-- Integer32 silaPowerSensorValue(2)
| | Textual Convention: Power
| +-- -R-- Integer32 silaPowerSensorWarnLow(3)
| | Textual Convention: Power
| +-- -R-- Integer32 silaPowerSensorWarnHigh(4)
| | Textual Convention: Power
| +-- -R-- Integer32 silaPowerSensorCritLow(5)
| | Textual Convention: Power
| +-- -R-- Integer32 silaPowerSensorCritHigh(6)
| | Textual Convention: Power
| +-- -R-- EnumVal silaPowerSensorState(7)
| Textual Convention: SensorState
| Values: disabled(0), normal(1), warningLow(2), warningHigh(3), criticalLow(4), criticalHigh(5)
|
+--silaConformance(2)
| |
| +--silaCompliances(1)
| | |
| | +--silaCommpliance(1)
| |
| +--silaGroups(2)
| |
| +--silaScalarFieldsGroup(1)
| +--silaTempSensorsTableGroup(2)
| +--silaVoltSensorsTableGroup(3)
| +--silaTachSensorsTableGroup(4)
| +--silaCurrSensorsTableGroup(5)
| +--silaPowerSensorsTableGroup(6)
| +--silaSoftwareTableGroup(7)
| +--silaInventoryTableGroup(8)
| +--silaNotificationsGroup(10)
|
+--silaProducts(3)
| |
| +--silaBmc(1)
|
+--silaInventoryTable(4)
| |
| +--silaInventoryEntry(1)
| | Index: silaInventoryPath
| |
| +-- -R-- String silaInventoryPath(1)
| | Size: 1..117
| +-- -R-- String silaInventoryName(2)
| +-- -R-- String silaInventoryManufacturer(3)
| +-- -R-- String silaInventoryBuildDate(4)
| +-- -R-- String silaInventoryModel(5)
| +-- -R-- String silaInventoryPartNumber(6)
| +-- -R-- String silaInventorySerialNumber(7)
| +-- -R-- String silaInventoryVersion(8)
| +-- -R-- EnumVal silaInventoryPresent(9)
| | Textual Convention: TruthValue
| | Values: true(1), false(2)
| +-- -R-- EnumVal silaInventoryFunctional(10)
| Textual Convention: TruthValue
| Values: true(1), false(2)
|
+--silaSoftwareTable(5)
|
+--silaSoftwareEntry(1)
| Index: silaSoftwareHash
|
+-- -R-- String silaSoftwareHash(1)
| Size: 1..8
+-- -R-- String silaSoftwareVersion(2)
+-- -R-- EnumVal silaSoftwarePurpose(3)
| Values: unknown(0), other(1), system(2), bmc(3), host(4)
+-- -R-- EnumVal silaSoftwareActivation(4)
| Values: notReady(0), invalid(1), ready(2), activating(3), active(4), failed(5)
+-- -R-- Integer32 silaSoftwarePriority(5)
```
Content of tables may be viewed by command `snmptable`:
```shell
$ snmptable -v2c -cpublic -Ci <IP-addres-of-BMC-host> SILA-MIB::silaTempSensorsTable
SNMP table: SILA-MIB::silaTempSensorsTable
index silaTempSensorName silaTempSensorValue silaTempSensorWarnLow ... silaTempSensorCritHigh silaTempSensorState
"BMC_Temp" "BMC_Temp" 21.375 °C 5.000 °C ... 115.000 °C normal
"Inlet_BRD_Temp" "Inlet_BRD_Temp" 16.750 °C 5.000 °C ... 115.000 °C normal
"PCH___M_2_Temp" "PCH___M_2_Temp" 17.375 °C 5.000 °C ... 115.000 °C normal
"PSU1_Temperature" "PSU1_Temperature" 22.000 °C .000 °C ... 63.000 °C normal
"PSU2_Temperature" "PSU2_Temperature" 20.250 °C .000 °C ... 63.000 °C normal
...
```
All exporting data may be viewed by command `snmpwalk`:
```shell
$ snmpwalk -v2c -cpublic <IP-addres-of-BMC-host> SILA-MIB::silaTempSensorsTable
SILA-MIB::silaTempSensorName."BMC_Temp" = STRING: "BMC_Temp"
SILA-MIB::silaTempSensorName."Inlet_BRD_Temp" = STRING: "Inlet_BRD_Temp"
SILA-MIB::silaTempSensorName."PCH___M_2_Temp" = STRING: "PCH___M_2_Temp"
SILA-MIB::silaTempSensorName."PSU1_Temperature" = STRING: "PSU1_Temperature"
SILA-MIB::silaTempSensorName."PSU2_Temperature" = STRING: "PSU2_Temperature"
SILA-MIB::silaTempSensorName."Right_side_of_the_board_Temp" = STRING: "Right_side_of_the_board_Temp"
SILA-MIB::silaTempSensorValue."BMC_Temp" = INTEGER: 22.750 °C
SILA-MIB::silaTempSensorValue."Inlet_BRD_Temp" = INTEGER: 17.000 °C
SILA-MIB::silaTempSensorValue."PCH___M_2_Temp" = INTEGER: 18.125 °C
SILA-MIB::silaTempSensorValue."PSU1_Temperature" = INTEGER: 24.000 °C
SILA-MIB::silaTempSensorValue."PSU2_Temperature" = INTEGER: 21.250 °C
SILA-MIB::silaTempSensorValue."Right_side_of_the_board_Temp" = INTEGER: 22.250 °C
SILA-MIB::silaTempSensorWarnLow."BMC_Temp" = INTEGER: 5.000 °C
SILA-MIB::silaTempSensorWarnLow."Inlet_BRD_Temp" = INTEGER: 5.000 °C
SILA-MIB::silaTempSensorWarnLow."PCH___M_2_Temp" = INTEGER: 5.000 °C
SILA-MIB::silaTempSensorWarnLow."PSU1_Temperature" = INTEGER: .000 °C
SILA-MIB::silaTempSensorWarnLow."PSU2_Temperature" = INTEGER: .000 °C
SILA-MIB::silaTempSensorWarnLow."Right_side_of_the_board_Temp" = INTEGER: 5.000 °C
SILA-MIB::silaTempSensorWarnHigh."BMC_Temp" = INTEGER: 110.000 °C
SILA-MIB::silaTempSensorWarnHigh."Inlet_BRD_Temp" = INTEGER: 110.000 °C
SILA-MIB::silaTempSensorWarnHigh."PCH___M_2_Temp" = INTEGER: 110.000 °C
SILA-MIB::silaTempSensorWarnHigh."PSU1_Temperature" = INTEGER: 60.000 °C
SILA-MIB::silaTempSensorWarnHigh."PSU2_Temperature" = INTEGER: 60.000 °C
SILA-MIB::silaTempSensorWarnHigh."Right_side_of_the_board_Temp" = INTEGER: 110.000 °C
SILA-MIB::silaTempSensorCritLow."BMC_Temp" = INTEGER: .000 °C
SILA-MIB::silaTempSensorCritLow."Inlet_BRD_Temp" = INTEGER: .000 °C
SILA-MIB::silaTempSensorCritLow."PCH___M_2_Temp" = INTEGER: -1.000 °C
SILA-MIB::silaTempSensorCritLow."PSU1_Temperature" = INTEGER: .000 °C
SILA-MIB::silaTempSensorCritLow."PSU2_Temperature" = INTEGER: .000 °C
SILA-MIB::silaTempSensorCritLow."Right_side_of_the_board_Temp" = INTEGER: .000 °C
SILA-MIB::silaTempSensorCritHigh."BMC_Temp" = INTEGER: 115.000 °C
SILA-MIB::silaTempSensorCritHigh."Inlet_BRD_Temp" = INTEGER: 115.000 °C
SILA-MIB::silaTempSensorCritHigh."PCH___M_2_Temp" = INTEGER: 115.000 °C
SILA-MIB::silaTempSensorCritHigh."PSU1_Temperature" = INTEGER: 63.000 °C
SILA-MIB::silaTempSensorCritHigh."PSU2_Temperature" = INTEGER: 63.000 °C
SILA-MIB::silaTempSensorCritHigh."Right_side_of_the_board_Temp" = INTEGER: 115.000 °C
SILA-MIB::silaTempSensorState."BMC_Temp" = INTEGER: normal(1)
SILA-MIB::silaTempSensorState."Inlet_BRD_Temp" = INTEGER: normal(1)
SILA-MIB::silaTempSensorState."PCH___M_2_Temp" = INTEGER: normal(1)
SILA-MIB::silaTempSensorState."PSU1_Temperature" = INTEGER: normal(1)
SILA-MIB::silaTempSensorState."PSU2_Temperature" = INTEGER: normal(1)
SILA-MIB::silaTempSensorState."Right_side_of_the_board_Temp" = INTEGER: normal(1)
...
```
Get current value of a specific sensor:
```
$ snmpget -v2c -cpublic <IP-addres-of-BMC-host> SILA-MIB::silaTempSensorValue.\"Right_side_of_the_board_Temp\"
SILA-MIB::silaTempSensorValue."Right_side_of_the_board_Temp" = INTEGER: 19.125 °C
```
### SNMPv3 support
For manage SNMPv3 access in runtime required `snmpusm` and `snmpvacm` tools from `net-snmp` package.
I did create the snmp user `root` with password `0penBmcAA` for control snmpd.
But by default him have access only from localhost.
For allowing access from other hosts, you should add/modify access rule in snmpd.conf:
```shell
...
com2sec readwrite <Your host> private
...
```
New user can be created over 3 steps:
1. Create copy of existen user
```shell
$ snmpusm -v3 -uroot -a0penBmcAA -x0penBmcAA -lauthPriv <OpenBMC-Host> create user01
```
2. Change password for new user:
```shell
$ snmpusm -v3 -uroot -a0penBmcAA -x0penBmcAA -lauthPriv <OpenBMC-Host> passwd 0penBmcAA NewPassword
```
3. Allow for new user read our data over snmp (add user to group MyRoGroup):
```shell
$ snmpvacm -v3 -uroot -a0penBmcAA -x0penBmc -lauthPriv <OpenBMC-Host> createSec2Group 3 user01 MyRoGroup
```
All users present in `SNMP-USER-BASED-SM-MIB::usmUserTable`.
### SNMP traps
For receive SNMP traps you should add receivers to snmpd.conf
```shell
trap2sink <receiver-host> <receiver-community>
```
## snmpcfg
This is a DBus service with interface `xyz.openbmc_project.SNMPCfg`
and object path `/xyz/openbmc_project/snmpcfg` for manage snmpd.conf content.
There has three methods:
- GetConfig - return body of actual snmpd.conf
- SetConfig - replace body of snmpd.conf with specified data and restart snmpd.
- ResetConfig - restore default version of snmpd.conf and restart snmpd.
This subproject will be moved to separate project in fututre.
|
