Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

mvrf_avoid_snmp_yml_config: made changes to pass SNMP config from con… #4057

Merged
merged 2 commits into from
Jan 29, 2020
Merged

mvrf_avoid_snmp_yml_config: made changes to pass SNMP config from con… #4057

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
e261ed8
mvrf_avoid_snmp_yml_config: made changes to pass SNMP config from con…
kannankvs Jan 24, 2020
be4be29
added a missing if condition
kannankvs Jan 27, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
38 changes: 22 additions & 16 deletions dockers/docker-snmp-sv2/snmpd.conf.j2
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,16 +15,10 @@

# Listen for connections on all ip addresses, including eth0, ipv4 lo
#
{% if snmp_agent_address_1 or snmp_agent_address_2 or snmp_agent_address_3 %}
{% if snmp_agent_address_1 %}
agentAddress {{ snmp_agent_address_1 }}
{% endif %}
{% if snmp_agent_address_2 %}
agentAddress {{ snmp_agent_address_2 }}
{% endif %}
{% if snmp_agent_address_3 %}
agentAddress {{ snmp_agent_address_3 }}
{% endif %}
{% if SNMP_AGENT_ADDRESS_CONFIG %}
{% for (agentip, port, vrf) in SNMP_AGENT_ADDRESS_CONFIG %}
agentAddress {{ agentip }}{% if port %}:{{ port }}{% endif %}{% if vrf %}%{{ vrf }}{% endif %}{{ "" }}
Copy link
Collaborator

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

{{ "" }} [](start = 94, length = 8)

Why you need this?

Could you give some samples of input and render results?

Copy link
Collaborator Author

@kannankvs kannankvs Jan 27, 2020 •
edited by qiluo-msft
Loading

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

@qiluo-msft : I assume you mean the last {{ "" }}.
I am using the following example configuration in config_db,

    "SNMP_AGENT_ADDRESS_CONFIG": {
        "1.1.1.1||": {},
        "2.2.2.2||": {}
    },

Without this {{ "" }}, if we configure more than one agentAddress, they all come in same line in snmpd.conf.
Example: In snmpd.conf without this {{ "" }} as follows.

agentAddress 1.1.1.1agentAddress 2.2.2.2

With this {{ "" }}, a new line is inserted between agentAddress.
Example: In snmpd.conf with this {{ "" }} as follows.

agentAddress 1.1.1.1
agentAddress 2.2.2.2

Copy link
Collaborator

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Not true. Could you please test again? I tested and got the expected multiple line output.

In reply to: 371142042 [](ancestors = 371142042)

Copy link
Collaborator Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

@qiluo-msft : My previous example was from my device only. I am not sure why you are not seeing same result as mine. I used the commands (given below) to configure. You can try once using the commands as well.

I redid the configuration and the result is given below.

root@sonic-s6100-07:~# config snmpagentaddress add 1.1.1.1
root@sonic-s6100-07:~# config snmpagentaddress add 2.2.2.2

root@sonic-s6100-07:~# docker exec -it snmp bash
root@sonic-s6100-07:/# cat /etc/snmp/snmpd.conf | grep agentAdd
agentAddress 1.1.1.1agentAddress 2.2.2.2
root@sonic-s6100-07:/#

Above is the output from my device without that {{ "" }}. If you are 100% sure that {{ "" }} is not required, I can remove it.

Copy link
Collaborator

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I test the image built in this PR https://sonic-jenkins.westus2.cloudapp.azure.com/job/mellanox/job/buildimage-mlnx-all-pr/2154/artifact/target/sonic-mellanox.bin. Please check if the test is valid and recheck yours?

admin@sonic:~$ docker exec -it snmp bash
root@sonic:/# redis-cli -n 4
127.0.0.1:6379[4]> hset "SNMP_AGENT_ADDRESS_CONFIG|1.1.1.1||" "" ""
(integer) 1
127.0.0.1:6379[4]> hset "SNMP_AGENT_ADDRESS_CONFIG|2.2.2.2||" "" ""
(integer) 1
127.0.0.1:6379[4]> exit
root@sonic:/# sonic-cfggen -d -y /etc/sonic/snmp.yml -t /usr/share/sonic/templates/snmpd.conf.j2
###############################################################################
# Managed by sonic-config-engine
###############################################################################
#
# EXAMPLE.conf:
#   An example configuration file for configuring the Net-SNMP agent ('snmpd')
#   See the 'snmpd.conf(5)' man page for details
#
#  Some entries are deliberately commented out, and will need to be explicitly activated
#
###############################################################################
#
#  AGENT BEHAVIOUR
#

#  Listen for connections on all ip addresses, including eth0, ipv4 lo
#
agentAddress 1.1.1.1
agentAddress 2.2.2.2

Copy link
Collaborator Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

@qiluo-msft : Unfortunately I dont have any mellanox device to test the mellanox bin. I tested in Dell device that uses sonic-broadcom.bin. I am using Jan 22 image from Jenkins.
Doubt: If we have this {{ "" }}. will it create any issue? Since it always gives error in my setup, can we retain it and merge?

Copy link
Collaborator

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Ok, I double checked my test case and it is not true.

{% endfor %}
{% else %}
agentAddress udp:161
agentAddress udp6:161
Expand Down Expand Up @@ -105,20 +99,32 @@ load 12 10 5
# Note: disabled snmp traps due to side effect of causing snmpd to listen on all ports (0.0.0.0)
#
# send SNMPv1 traps
{%if v1_trap_dest and v1_trap_dest != 'NotConfigured' %}
trapsink {{ v1_trap_dest }}
{% if SNMP_TRAP_CONFIG and SNMP_TRAP_CONFIG['v1TrapDest'] %}
{% set v1SnmpTrapIp = SNMP_TRAP_CONFIG['v1TrapDest']['DestIp'] %}
{% set v1SnmpTrapPort = SNMP_TRAP_CONFIG['v1TrapDest']['DestPort'] %}
{% set v1SnmpTrapVrf = SNMP_TRAP_CONFIG['v1TrapDest']['vrf'] %}
{% set v1SnmpTrapComm = SNMP_TRAP_CONFIG['v1TrapDest']['Community'] %}
trapsink {{ v1SnmpTrapIp }}:{{ v1SnmpTrapPort }}{% if v1SnmpTrapVrf != 'None' %}%{{ v1SnmpTrapVrf }}{% endif %} {{ v1SnmpTrapComm }}{{ "" }}
{% else %}
#trapsink localhost public
{% endif %}
# send SNMPv2c traps
{%if v2_trap_dest and v2_trap_dest != 'NotConfigured' %}
trap2sink {{ v2_trap_dest }}
{% if SNMP_TRAP_CONFIG and SNMP_TRAP_CONFIG['v2TrapDest'] %}
{% set v2SnmpTrapIp = SNMP_TRAP_CONFIG['v2TrapDest']['DestIp'] %}
{% set v2SnmpTrapPort = SNMP_TRAP_CONFIG['v2TrapDest']['DestPort'] %}
{% set v2SnmpTrapVrf = SNMP_TRAP_CONFIG['v2TrapDest']['vrf'] %}
{% set v2SnmpTrapComm = SNMP_TRAP_CONFIG['v2TrapDest']['Community'] %}
trap2sink {{ v2SnmpTrapIp }}:{{ v2SnmpTrapPort }}{% if v2SnmpTrapVrf != 'None' %}%{{ v2SnmpTrapVrf }}{% endif %} {{ v2SnmpTrapComm }}{{ "" }}
{% else %}
#trap2sink localhost public
{% endif %}
# send SNMPv2c INFORMs
{%if v3_trap_dest and v3_trap_dest != 'NotConfigured' %}
informsink {{ v3_trap_dest }}
{% if SNMP_TRAP_CONFIG and SNMP_TRAP_CONFIG['v3TrapDest'] %}
{% set v3SnmpTrapIp = SNMP_TRAP_CONFIG['v3TrapDest']['DestIp'] %}
{% set v3SnmpTrapPort = SNMP_TRAP_CONFIG['v3TrapDest']['DestPort'] %}
{% set v3SnmpTrapVrf = SNMP_TRAP_CONFIG['v3TrapDest']['vrf'] %}
{% set v3SnmpTrapComm = SNMP_TRAP_CONFIG['v3TrapDest']['Community'] %}
trapsink {{ v3SnmpTrapIp }}:{{ v3SnmpTrapPort }}{% if v3SnmpTrapVrf != 'None' %}%{{ v3SnmpTrapVrf }}{% endif %} {{ v3SnmpTrapComm }}{{ "" }}
{% else %}
#informsink localhost public
{% endif %}
Expand Down
71 changes: 0 additions & 71 deletions files/build_templates/docker_image_ctl.j2
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -64,77 +64,6 @@ function preStartAction()
fi
{%- elif docker_container_name == "snmp" %}
sonic-db-cli STATE_DB HSET 'DEVICE_METADATA|localhost' chassis_serial_number $(decode-syseeprom -s)
vrfenabled=`sonic-db-cli CONFIG_DB hget "MGMT_VRF_CONFIG|vrf_global" mgmtVrfEnabled`
v1SnmpTrapIp=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v1TrapDest" DestIp`
v1SnmpTrapPort=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v1TrapDest" DestPort`
v1Vrf=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v1TrapDest" vrf`
v1Comm=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v1TrapDest" Community`
v2SnmpTrapIp=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v2TrapDest" DestIp`
v2SnmpTrapPort=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v2TrapDest" DestPort`
v2Vrf=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v2TrapDest" vrf`
v2Comm=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v2TrapDest" Community`
v3SnmpTrapIp=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v3TrapDest" DestIp`
v3SnmpTrapPort=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v3TrapDest" DestPort`
v3Vrf=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v3TrapDest" vrf`
v3Comm=`sonic-db-cli CONFIG_DB hget "SNMP_TRAP_CONFIG|v3TrapDest" Community`

if [ "${v1SnmpTrapIp}" != "" ]
then
if [ "${v1Vrf}" != "None" ]
then
sed -i "s/v1_trap_dest:.*/v1_trap_dest: ${v1SnmpTrapIp}:${v1SnmpTrapPort}%${v1Vrf} ${v1Comm}/" "/etc/sonic/snmp.yml"
else
sed -i "s/v1_trap_dest:.*/v1_trap_dest: ${v1SnmpTrapIp}:${v1SnmpTrapPort} ${v1Comm}/" "/etc/sonic/snmp.yml"
fi
else
sed -i "s/v1_trap_dest:.*/v1_trap_dest: NotConfigured/" "/etc/sonic/snmp.yml"
fi
if [ "${v2SnmpTrapIp}" != "" ]
then
if [ "${v2Vrf}" != "None" ]
then
sed -i "s/v2_trap_dest:.*/v2_trap_dest: ${v2SnmpTrapIp}:${v2SnmpTrapPort}%${v2Vrf} ${v2Comm}/" "/etc/sonic/snmp.yml"
else
sed -i "s/v2_trap_dest:.*/v2_trap_dest: ${v2SnmpTrapIp}:${v2SnmpTrapPort} ${v2Comm}/" "/etc/sonic/snmp.yml"
fi
else
sed -i "s/v2_trap_dest:.*/v2_trap_dest: NotConfigured/" "/etc/sonic/snmp.yml"
fi
if [ "${v3SnmpTrapIp}" != "" ]
then
if [ "${v3Vrf}" != "None" ]
then
sed -i "s/v3_trap_dest:.*/v3_trap_dest: ${v3SnmpTrapIp}:${v3SnmpTrapPort}%${v3Vrf} ${v3Comm}/" "/etc/sonic/snmp.yml"
else
sed -i "s/v3_trap_dest:.*/v3_trap_dest: ${v3SnmpTrapIp}:${v3SnmpTrapPort} ${v3Comm}/" "/etc/sonic/snmp.yml"
fi
else
sed -i "s/v3_trap_dest:.*/v3_trap_dest: NotConfigured/" "/etc/sonic/snmp.yml"
fi

echo -n "" > /tmp/snmpagentaddr.yml
# TODO
# we should avoid using 'keys' operation via redis-cli or sonic-db-cli
# there would be an issue when KEY in database contains space or '\n'
# for loop on the non-tty 'keys' output will take the space or `\n` as seperator when parsing the element
keys=`sonic-db-cli CONFIG_DB keys "SNMP_AGENT_ADDRESS_CONFIG|*"`
count=1
for key in $keys;do
ip=`echo $key|cut -d "|" -f2`
echo -n "snmp_agent_address_$count: $ip" >> /tmp/snmpagentaddr.yml
port=`echo $key|cut -d "|" -f3`
if [ -n "$port" ]; then
echo -n ":$port" >> /tmp/snmpagentaddr.yml
fi
vrf=`echo $key|cut -d "|" -f4`
if [ -n "$vrf" ]; then
echo -n "%$vrf" >> /tmp/snmpagentaddr.yml
fi
echo "" >> /tmp/snmpagentaddr.yml
count=$((count+1))
done
sed -i '/snmp_agent_address_*/d' /etc/sonic/snmp.yml
cat /tmp/snmpagentaddr.yml >> /etc/sonic/snmp.yml
{%- else %}
: # nothing
{%- endif %}
Expand Down
3 changes: 0 additions & 3 deletions files/image_config/snmp/snmp.yml
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,5 +1,2 @@
snmp_rocommunity: public
snmp_location: public
v1_trap_dest: NotConfigured
v2_trap_dest: NotConfigured
v3_trap_dest: NotConfigured