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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2018-11-07 12:22:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2018-11-07 12:22:44 +0000 |
commit | 1e6c93250172946eeb38e94a92a1fd12c9d3011e (patch) | |
tree | 8ca5e16dfc7ad6b3bf2738ca0a48408a950f8f7e /conf.d/node.d/snmp.conf.md | |
parent | Update watch file (diff) | |
download | netdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.tar.xz netdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.zip |
Merging upstream version 1.11.0+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'conf.d/node.d/snmp.conf.md')
-rw-r--r-- | conf.d/node.d/snmp.conf.md | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/conf.d/node.d/snmp.conf.md b/conf.d/node.d/snmp.conf.md deleted file mode 100644 index 6b496f7a..00000000 --- a/conf.d/node.d/snmp.conf.md +++ /dev/null @@ -1,359 +0,0 @@ -# SNMP Data Collector - -Using this collector, netdata can collect data from any SNMP device. - -This collector supports: - -- any number of SNMP devices -- each SNMP device can be used to collect data for any number of charts -- each chart may have any number of dimensions -- each SNMP device may have a different update frequency -- each SNMP device will accept one or more batches to report values (you can set `max_request_size` per SNMP server, to control the size of batches). - -The source code of the plugin is [here](https://github.com/firehol/netdata/blob/master/node.d/snmp.node.js). - -## Configuration - -You will need to create the file `/etc/netdata/node.d/snmp.conf` with data like the following. - -In this example: - - - the SNMP device is `10.11.12.8`. - - the SNMP community is `public`. - - we will update the values every 10 seconds (`update_every: 10` under the server `10.11.12.8`). - - we define 2 charts `snmp_switch.bandwidth_port1` and `snmp_switch.bandwidth_port2`, each having 2 dimensions: `in` and `out`. - -```js -{ - "enable_autodetect": false, - "update_every": 5, - "max_request_size": 100, - "servers": [ - { - "hostname": "10.11.12.8", - "community": "public", - "update_every": 10, - "max_request_size": 50, - "options": { "timeout": 10000 }, - "charts": { - "snmp_switch.bandwidth_port1": { - "title": "Switch Bandwidth for port 1", - "units": "kilobits/s", - "type": "area", - "priority": 1, - "family": "ports", - "dimensions": { - "in": { - "oid": "1.3.6.1.2.1.2.2.1.10.1", - "algorithm": "incremental", - "multiplier": 8, - "divisor": 1024, - "offset": 0 - }, - "out": { - "oid": "1.3.6.1.2.1.2.2.1.16.1", - "algorithm": "incremental", - "multiplier": -8, - "divisor": 1024, - "offset": 0 - } - } - }, - "snmp_switch.bandwidth_port2": { - "title": "Switch Bandwidth for port 2", - "units": "kilobits/s", - "type": "area", - "priority": 1, - "family": "ports", - "dimensions": { - "in": { - "oid": "1.3.6.1.2.1.2.2.1.10.2", - "algorithm": "incremental", - "multiplier": 8, - "divisor": 1024, - "offset": 0 - }, - "out": { - "oid": "1.3.6.1.2.1.2.2.1.16.2", - "algorithm": "incremental", - "multiplier": -8, - "divisor": 1024, - "offset": 0 - } - } - } - } - } - ] -} -``` - -`update_every` is the update frequency for each server, in seconds. - -`max_request_size` limits the maximum number of OIDs that will be requested in a single call. The default is 50. Lower this number of you get `TooBig` errors in netdata error.log. - -`family` sets the name of the submenu of the dashboard each chart will appear under. - -If you need to define many charts using incremental OIDs, you can use something like this: - -This is like the previous, but the option `multiply_range` given, will multiply the current chart from `1` to `24` inclusive, producing 24 charts in total for the 24 ports of the switch `10.11.12.8`. - -Each of the 24 new charts will have its id (1-24) appended at: - -1. its chart unique id, i.e. `snmp_switch.bandwidth_port1` to `snmp_switch.bandwidth_port24` -2. its `title`, i.e. `Switch Bandwidth for port 1` to `Switch Bandwidth for port 24` -3. its `oid` (for all dimensions), i.e. dimension `in` will be `1.3.6.1.2.1.2.2.1.10.1` to `1.3.6.1.2.1.2.2.1.10.24` -3. its priority (which will be incremented for each chart so that the charts will appear on the dashboard in this order) - -```js -{ - "enable_autodetect": false, - "update_every": 10, - "servers": [ - { - "hostname": "10.11.12.8", - "community": "public", - "update_every": 10, - "options": { "timeout": 20000 }, - "charts": { - "snmp_switch.bandwidth_port": { - "title": "Switch Bandwidth for port ", - "units": "kilobits/s", - "type": "area", - "priority": 1, - "family": "ports", - "multiply_range": [ 1, 24 ], - "dimensions": { - "in": { - "oid": "1.3.6.1.2.1.2.2.1.10.", - "algorithm": "incremental", - "multiplier": 8, - "divisor": 1024, - "offset": 0 - }, - "out": { - "oid": "1.3.6.1.2.1.2.2.1.16.", - "algorithm": "incremental", - "multiplier": -8, - "divisor": 1024, - "offset": 0 - } - } - } - } - } - ] -} -``` - -The `options` given for each server, are: - - - `timeout`, the time to wait for the SNMP device to respond. The default is 5000 ms. - - `version`, the SNMP version to use. `0` is Version 1, `1` is Version 2c. The default is Version 1 (`0`). - - `transport`, the default is `udp4`. - - `port`, the port of the SNMP device to connect to. The default is `161`. - - `retries`, the number of attempts to make to fetch the data. The default is `1`. - -## Retreiving names from snmp - -You can append a value retrieved from SNMP to the title, by adding `titleoid` to the chart. - -You can set a dimension name to a value retrieved from SNMP, by adding `oidname` to the dimension. - -Both of the above will participate in `multiply_range`. - - -## Testing the configuration - -To test it, you can run: - -```sh -/usr/libexec/netdata/plugins.d/node.d.plugin 1 snmp -``` - -The above will run it on your console and you will be able to see what netdata sees, but also errors. You can get a very detailed output by appending `debug` to the command line. - -If it works, restart netdata to activate the snmp collector and refresh the dashboard (if your SNMP device responds with a delay, you may need to refresh the dashboard in a few seconds). - -## Data collection speed - -Keep in mind that many SNMP switches are routers are very slow. They may not be able to report values per second. If you run `node.d.plugin` in `debug` mode, it will report the time it took for the SNMP device to respond. My switch, for example, needs 7-8 seconds to respond for the traffic on 24 ports (48 OIDs, in/out). - -Also, if you use many SNMP clients on the same SNMP device at the same time, values may be skipped. This is a problem of the SNMP device, not this collector. - -## Finding OIDs - -Use `snmpwalk`, like this: - -```sh -snmpwalk -t 20 -v 1 -O fn -c public 10.11.12.8 -``` - -- `-t 20` is the timeout in seconds -- `-v 1` is the SNMP version -- `-O fn` will display full OIDs in numeric format (you may want to run it also without this option to see human readable output of OIDs) -- `-c public` is the SNMP community -- `10.11.12.8` is the SNMP device - -Keep in mind that `snmpwalk` outputs the OIDs with a dot in front them. You should remove this dot when adding OIDs to the configuration file of this collector. - -## Example: Linksys SRW2024P - -This is what I use for my Linksys SRW2024P. It creates: - -1. A chart for power consumption (it is a PoE switch) -2. Two charts for packets received (total packets received and packets received with errors) -3. One chart for packets output -4. 24 charts, one for each port of the switch. It also appends the port names, as defined at the switch, to the chart titles. - -This switch also reports various other metrics, like snmp, packets per port, etc. Unfortunately it does not report CPU utilization or backplane utilization. - -This switch has a very slow SNMP processors. To respond, it needs about 8 seconds, so I have set the refresh frequency (`update_every`) to 15 seconds. - -```js -{ - "enable_autodetect": false, - "update_every": 5, - "servers": [ - { - "hostname": "10.11.12.8", - "community": "public", - "update_every": 15, - "options": { "timeout": 20000, "version": 1 }, - "charts": { - "snmp_switch.power": { - "title": "Switch Power Supply", - "units": "watts", - "type": "line", - "priority": 10, - "family": "power", - "dimensions": { - "supply": { - "oid": ".1.3.6.1.2.1.105.1.3.1.1.2.1", - "algorithm": "absolute", - "multiplier": 1, - "divisor": 1, - "offset": 0 - }, - "used": { - "oid": ".1.3.6.1.2.1.105.1.3.1.1.4.1", - "algorithm": "absolute", - "multiplier": 1, - "divisor": 1, - "offset": 0 - } - } - } - , "snmp_switch.input": { - "title": "Switch Packets Input", - "units": "packets/s", - "type": "area", - "priority": 20, - "family": "IP", - "dimensions": { - "receives": { - "oid": ".1.3.6.1.2.1.4.3.0", - "algorithm": "incremental", - "multiplier": 1, - "divisor": 1, - "offset": 0 - } - , "discards": { - "oid": ".1.3.6.1.2.1.4.8.0", - "algorithm": "incremental", - "multiplier": 1, - "divisor": 1, - "offset": 0 - } - } - } - , "snmp_switch.input_errors": { - "title": "Switch Received Packets with Errors", - "units": "packets/s", - "type": "line", - "priority": 30, - "family": "IP", - "dimensions": { - "bad_header": { - "oid": ".1.3.6.1.2.1.4.4.0", - "algorithm": "incremental", - "multiplier": 1, - "divisor": 1, - "offset": 0 - } - , "bad_address": { - "oid": ".1.3.6.1.2.1.4.5.0", - "algorithm": "incremental", - "multiplier": 1, - "divisor": 1, - "offset": 0 - } - , "unknown_protocol": { - "oid": ".1.3.6.1.2.1.4.7.0", - "algorithm": "incremental", - "multiplier": 1, - "divisor": 1, - "offset": 0 - } - } - } - , "snmp_switch.output": { - "title": "Switch Output Packets", - "units": "packets/s", - "type": "line", - "priority": 40, - "family": "IP", - "dimensions": { - "requests": { - "oid": ".1.3.6.1.2.1.4.10.0", - "algorithm": "incremental", - "multiplier": 1, - "divisor": 1, - "offset": 0 - } - , "discards": { - "oid": ".1.3.6.1.2.1.4.11.0", - "algorithm": "incremental", - "multiplier": -1, - "divisor": 1, - "offset": 0 - } - , "no_route": { - "oid": ".1.3.6.1.2.1.4.12.0", - "algorithm": "incremental", - "multiplier": -1, - "divisor": 1, - "offset": 0 - } - } - } - , "snmp_switch.bandwidth_port": { - "title": "Switch Bandwidth for port ", - "titleoid": ".1.3.6.1.2.1.31.1.1.1.18.", - "units": "kilobits/s", - "type": "area", - "priority": 100, - "family": "ports", - "multiply_range": [ 1, 24 ], - "dimensions": { - "in": { - "oid": ".1.3.6.1.2.1.2.2.1.10.", - "algorithm": "incremental", - "multiplier": 8, - "divisor": 1024, - "offset": 0 - } - , "out": { - "oid": ".1.3.6.1.2.1.2.2.1.16.", - "algorithm": "incremental", - "multiplier": -8, - "divisor": 1024, - "offset": 0 - } - } - } - } - } - ] -} -``` |