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[FRR] Enable SNMP support #2981

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Jun 19, 2019
Merged

[FRR] Enable SNMP support #2981

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[FRR] Enable SNMP support
MichelMoriniaux Jun 7, 2019
c1cf22c
[FRR] Enable SNMP support
MichelMoriniaux Jun 7, 2019
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1 change: 1 addition & 0 deletions dockers/docker-fpm-frr/Dockerfile.j2
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Expand Up @@ -41,5 +41,6 @@ RUN rm -rf /debs ~/.cache
COPY ["bgpcfgd", "start.sh", "/usr/bin/"]
COPY ["*.j2", "/usr/share/sonic/templates/"]
COPY ["supervisord.conf", "/etc/supervisor/conf.d/"]
COPY ["snmp.conf", "/etc/snmp/frr.conf"]

ENTRYPOINT ["/usr/bin/supervisord"]
1 change: 1 addition & 0 deletions dockers/docker-fpm-frr/bgpd.conf.j2
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Expand Up @@ -11,6 +11,7 @@ hostname {{ DEVICE_METADATA['localhost']['hostname'] }}
password zebra
log syslog informational
log facility local4
agentx
! enable password {# {{ en_passwd }} TODO: param needed #}
{% endblock system_init %}
!
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1 change: 1 addition & 0 deletions dockers/docker-fpm-frr/frr.conf.j2
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Expand Up @@ -11,6 +11,7 @@ hostname {{ DEVICE_METADATA['localhost']['hostname'] }}
password zebra
log syslog informational
log facility local4
agentx
! enable password {# {{ en_passwd }} TODO: param needed #}
{% endblock system_init %}
!
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7 changes: 7 additions & 0 deletions dockers/docker-fpm-frr/snmp.conf
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@@ -0,0 +1,7 @@
# This line allows the FRR docker to speak with the snmp container
# Make sure this line matches the one in the snmp docker
# snmp:/etc/snmp/snmpd.conf
# To verify this works you need to have a valid bgp daemon running and configured
# Check that a snmpwalk to 1.3.6.1.2.1.15 gives an output
# Further verification: 1.3.6.1.2.1.15.2.0 = INTEGER: 65000 the returned value should be the confiugred ASN
agentXSocket tcp:localhost:3161
4 changes: 2 additions & 2 deletions dockers/docker-fpm-frr/supervisord.conf
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Expand Up @@ -31,7 +31,7 @@ stdout_logfile=syslog
stderr_logfile=syslog

[program:zebra]
command=/usr/lib/frr/zebra -A 127.0.0.1 -s 90000000 -M fpm
command=/usr/lib/frr/zebra -A 127.0.0.1 -s 90000000 -M fpm -M snmp
priority=4
autostart=false
autorestart=false
Expand All @@ -49,7 +49,7 @@ stdout_logfile=syslog
stderr_logfile=syslog

[program:bgpd]
command=/usr/lib/frr/bgpd -A 127.0.0.1
command=/usr/lib/frr/bgpd -A 127.0.0.1 -M snmp
priority=5
stopsignal=KILL
autostart=false
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8 changes: 8 additions & 0 deletions dockers/docker-snmp-sv2/snmpd.conf.j2
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Expand Up @@ -118,6 +118,14 @@ load 12 10 5
#
# Run as an AgentX master agent
master agentx
# internal socket to allow extension to other docker containers
# Currently the other container using this is docker-fpm-frr
# make sure this line matches bgp:/etc/snmp/frr.conf
# please see testing procedure in the same file to verify this works
# to verify the SNMP docker side look for the following string in the log file:
# INFO snmp-subagent [ax_interface] INFO: Using agentx socket type tcp with path tcp:localhost:3161
# INFO supervisord snmp-subagent INFO:ax_interface:Using agentx socket type tcp with path tcp:localhost:3161
agentxsocket tcp:localhost:3161
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@qiluo-msft qiluo-msft Jun 12, 2019 •
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3161 [](start = 30, length = 4)

How did you choose this port? I see it also in snmp.conf. Suggest prevent magic numbers, or add comment for reference each other so we will not forget if we want to modify it. #Closed

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standard port is 705, chose 3000+ snmp port to not run into issues for daemons that re not launched as root.
We can make this a configurable option in rules/config?

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@qiluo-msft qiluo-msft Jun 12, 2019 •
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rules/config is good! #Pending

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actually talked to fast: this would require a nested template (dockers/docker-snmp-sv2/snmpd.conf.j2.j2 ) which would add complexity, the best thing I believe is to add it to our plan to integrate snmp config in config_db.json as per sonic-net/SONiC#231
we should start working on this in Q3 ( within a month ). what do you think?

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@qiluo-msft qiluo-msft Jun 13, 2019 •
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OK to me. Then please check the alternative recommendation

add comment for reference each other so we will not forget if we want to modify it. #Closed

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agreed

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added references to both files

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@qiluo-msft qiluo-msft Jun 12, 2019 •
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agentxsocket [](start = 0, length = 12)

How to test this feature? Can you add a test case in sonic-mgmt? #Pending

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you need an agentx client to be able to test this feature: we can provide an end to end test by using the bgp daemon as agentx client and doing an snmp request to a RFC1657 OID

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@qiluo-msft qiluo-msft Jun 12, 2019 •
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Not sure why we need an agentx client to test. I guess you can add some queries into existing sonic-mgmt snmp test. #Closed

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yes I'm looking into it right now, I'm checking to see if the ansible snmp_facts module queries the right OIDs which would make the test trivial.

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https://github.com/Azure/sonic-mgmt/blob/master/ansible/library/snmp_facts.py does not support RFC1657 at this time, we could patch it to add a subset of OIDs but its going to take some time. I suggest we add it to the issues backlog of sonic-mgmt and we can pick it up

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If you could not provide a sonic-mgmt test case right now, please add some manual test instruction here (with steps and sample output). We could not accept feature without test.

In reply to: 293172354 [](ancestors = 293172354)

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OK will add a link to look at the docker-fpm-frr snmp.conf file and put the test protocol there

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Added the info to both files


#
# SysDescription pass-through
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2 changes: 1 addition & 1 deletion rules/docker-fpm-frr.mk
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Expand Up @@ -2,7 +2,7 @@

DOCKER_FPM_FRR = docker-fpm-frr.gz
$(DOCKER_FPM_FRR)_PATH = $(DOCKERS_PATH)/docker-fpm-frr
$(DOCKER_FPM_FRR)_DEPENDS += $(FRR) $(SWSS) $(LIBYANG)
$(DOCKER_FPM_FRR)_DEPENDS += $(FRR) $(FRR_SNMP) $(SWSS) $(LIBYANG)
$(DOCKER_FPM_FRR)_LOAD_DOCKERS += $(DOCKER_CONFIG_ENGINE_STRETCH)
SONIC_DOCKER_IMAGES += $(DOCKER_FPM_FRR)

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8 changes: 7 additions & 1 deletion rules/frr.mk
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Expand Up @@ -18,4 +18,10 @@ $(eval $(call add_derived_package,$(FRR),$(FRR_PYTHONTOOLS)))
FRR_DBG = frr-dbgsym_$(FRR_VERSION)-sonic-$(FRR_SUBVERSION)_amd64.deb
$(eval $(call add_derived_package,$(FRR),$(FRR_DBG)))

export FRR FRR_PYTHONTOOLS FRR_DBG
FRR_SNMP = frr-snmp_$(FRR_VERSION)-sonic-$(FRR_SUBVERSION)_amd64.deb
$(eval $(call add_derived_package,$(FRR),$(FRR_SNMP)))

FRR_SNMP_DBG = frr-snmp-dbgsym_$(FRR_VERSION)-sonic-$(FRR_SUBVERSION)_amd64.deb
$(eval $(call add_derived_package,$(FRR),$(FRR_SNMP_DBG)))

export FRR FRR_PYTHONTOOLS FRR_DBG FRR_SNMP FRR_SNMP_DBG
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1 change: 1 addition & 0 deletions src/sonic-config-engine/tests/sample_output/frr.conf
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Expand Up @@ -8,6 +8,7 @@ hostname switch-t0
password zebra
log syslog informational
log facility local4
agentx
! enable password !
! Enable link-detect (default disabled)
interface PortChannel01
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2 changes: 1 addition & 1 deletion src/sonic-frr/Makefile
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Expand Up @@ -3,7 +3,7 @@ SHELL = /bin/bash
.SHELLFLAGS += -e

MAIN_TARGET = $(FRR)
DERIVED_TARGET = $(FRR_PYTHONTOOLS) $(FRR_DBG)
DERIVED_TARGET = $(FRR_PYTHONTOOLS) $(FRR_DBG) $(FRR_SNMP) $(FRR_SNMP_DBG)

$(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
# Build the package
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