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Support for connecting to DB in namespace via TCP port in multi-asic platform. (#4779)

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* Support for connecting to DB in namespace via IP:port ( using docker bridge network ) for applications in multi-asic platform.

* Added the default IP as 127.0.0.1 if the IPaddress derivation from interface fails.
Moved the localhost loopback IP binding logic into the supervisor.j2 file.
This commit is contained in:
judyjoseph 2020-06-30 14:32:04 -07:00 committed by Qi Luo
parent 608a69ca02
commit f2fb6de1ab
3 changed files with 25 additions and 3 deletions
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2
dockers/docker-database/database_config.json.j2
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@ -1,7 +1,7 @@
{
"INSTANCES": {
"redis":{
"hostname" : "127.0.0.1",
"hostname" : "{{HOST_IP}}",
"port" : 6379,
"unix_socket_path" : "/var/run/redis{{NAMESPACE_ID}}/redis.sock",
"persistence_for_warm_boot" : "yes"

19
dockers/docker-database/docker-database-init.sh
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@ -1,12 +1,29 @@
#!/usr/bin/env bash
# For linux host namespace, in both single and multi ASIC platform use the loopback interface
# For other namespaces, use eth0 interface which is connected to the docker0 bridge in the host.
if [[ $NAMESPACE_ID == "" ]]
then
INTFC=lo
else
INTFC=eth0
fi
# Get the ip address of the interface
# if the ip address was not retrieved correctly, put localhost(127.0.0.1) as the default.
host_ip=$(ip -4 -o addr show $INTFC | awk '{print $4}' | cut -d'/' -f1 | head -1)
if [[ $host_ip == "" ]]
then
host_ip=127.0.0.1
fi
REDIS_DIR=/var/run/redis$NAMESPACE_ID
mkdir -p $REDIS_DIR/sonic-db
if [ -f /etc/sonic/database_config$NAMESPACE_ID.json ]; then
cp /etc/sonic/database_config$NAMESPACE_ID.json $REDIS_DIR/sonic-db/database_config.json
else
j2 /usr/share/sonic/templates/database_config.json.j2 > $REDIS_DIR/sonic-db/database_config.json
HOST_IP=$host_ip j2 /usr/share/sonic/templates/database_config.json.j2 > $REDIS_DIR/sonic-db/database_config.json
fi
mkdir -p /etc/supervisor/conf.d/

7
dockers/docker-database/supervisord.conf.j2
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@ -20,7 +20,12 @@ stderr_logfile=syslog
{% if INSTANCES %}
{% for redis_inst, redis_items in INSTANCES.iteritems() %}
[program: {{ redis_inst }}]
command=/bin/bash -c "{ [[ -s /var/lib/{{ redis_inst }}/dump.rdb ]] || rm -f /var/lib/{{ redis_inst }}/dump.rdb; } && mkdir -p /var/lib/{{ redis_inst }} && exec /usr/bin/redis-server /etc/redis/redis.conf --port {{ redis_items['port'] }} --unixsocket {{ redis_items['unix_socket_path'] }} --pidfile /var/run/redis/{{ redis_inst }}.pid --dir /var/lib/{{ redis_inst }}"
{% if redis_items['hostname'] != '127.0.0.1' %}
{%- set LOOPBACK_IP = '127.0.0.1' -%}
{%- else -%}
{%- set LOOPBACK_IP = '' -%}
{%- endif -%}
command=/bin/bash -c "{ [[ -s /var/lib/{{ redis_inst }}/dump.rdb ]] || rm -f /var/lib/{{ redis_inst }}/dump.rdb; } && mkdir -p /var/lib/{{ redis_inst }} && exec /usr/bin/redis-server /etc/redis/redis.conf --bind {{ LOOPBACK_IP }} {{ redis_items['hostname'] }} --port {{ redis_items['port'] }} --unixsocket {{ redis_items['unix_socket_path'] }} --pidfile /var/run/redis/{{ redis_inst }}.pid --dir /var/lib/{{ redis_inst }}"
priority=2
autostart=true
autorestart=false