154a6ab6c5
- Support for non-template based FRR configurations (BGP, route-map, OSPF, static route..etc) using config DB schema. - Support for save & restore - Jinja template based config-DB data read and apply to FRR during startup **- How I did it** - add frrcfgd service - when frr_mgmg_framework_config is set, frrcfgd starts in bgp container - when user changed the BGP or other related table entries in config DB, frrcfgd will run corresponding VTYSH commands to program on FRR. - add jinja template to generate FRR config file to be used by FRR daemons while bgp container restarted **- How to verify it** 1. Add/delete data on config DB and then run VTYSH "show running-config" command to check if FRR configuration changed. 1. Restart bgp container and check if generated FRR config file is correct and run VTYSH "show running-config" command to check if FRR configuration is consistent with attributes in config DB Co-authored-by: Zhenhong Zhao <zhenhong.zhao@dell.com>
80 lines
3.3 KiB
Bash
Executable File
80 lines
3.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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mkdir -p /etc/frr
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mkdir -p /etc/supervisor/conf.d
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CFGGEN_PARAMS=" \
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-d \
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-y /etc/sonic/constants.yml \
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-t /usr/share/sonic/templates/frr_vars.j2 \
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-t /usr/share/sonic/templates/supervisord/supervisord.conf.j2,/etc/supervisor/conf.d/supervisord.conf \
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-t /usr/share/sonic/templates/bgpd/gen_bgpd.conf.j2,/etc/frr/bgpd.conf \
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-t /usr/share/sonic/templates/supervisord/critical_processes.j2,/etc/supervisor/critical_processes \
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-t /usr/share/sonic/templates/zebra/zebra.conf.j2,/etc/frr/zebra.conf \
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-t /usr/share/sonic/templates/staticd/gen_staticd.conf.j2,/etc/frr/staticd.conf \
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-t /usr/share/sonic/templates/gen_frr.conf.j2,/etc/frr/frr.conf \
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-t /usr/share/sonic/templates/isolate.j2,/usr/sbin/bgp-isolate \
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-t /usr/share/sonic/templates/unisolate.j2,/usr/sbin/bgp-unisolate \
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-t /usr/local/sonic/frrcfgd/bfdd.conf.j2,/etc/frr/bfdd.conf \
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-t /usr/local/sonic/frrcfgd/ospfd.conf.j2,/etc/frr/ospfd.conf \
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"
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FRR_VARS=$(sonic-cfggen $CFGGEN_PARAMS)
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MGMT_FRAMEWORK_CONFIG=$(echo $FRR_VARS | jq -r '.frr_mgmt_framework_config')
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CONFIG_TYPE=$(echo $FRR_VARS | jq -r '.docker_routing_config_mode')
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if [ -z "$MGMT_FRAMEWORK_CONFIG" ] || [ "$MGMT_FRAMEWORK_CONFIG" == "false" ]; then
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rm /etc/frr/bfdd.conf /etc/frr/ospfd.conf
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fi
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update_default_gw()
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{
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IP_VER=${1}
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# FRR is not running in host namespace so we need to delete
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# default gw kernel route added by docker network via eth0 and add it back
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# with higher administrative distance so that default route learnt
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# by FRR becomes best route if/when available
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GATEWAY_IP=$(ip -${IP_VER} route show default dev eth0 | awk '{print $3}')
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#Check if docker default route is there
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if [[ ! -z "$GATEWAY_IP" ]]; then
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ip -${IP_VER} route del default dev eth0
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#Make sure route is deleted
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CHECK_GATEWAY_IP=$(ip -${IP_VER} route show default dev eth0 | awk '{print $3}')
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if [[ -z "$CHECK_GATEWAY_IP" ]]; then
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# Ref: http://docs.frrouting.org/en/latest/zebra.html#zebra-vrf
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# Zebra does treat Kernel routes as special case for the purposes of Admin Distance. \
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# Upon learning about a route that is not originated by FRR we read the metric value as a uint32_t.
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# The top byte of the value is interpreted as the Administrative Distance and
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# the low three bytes are read in as the metric.
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# so here we are programming administrative distance of 210 (210 << 24) > 200 (for routes learnt via IBGP)
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ip -${IP_VER} route add default via $GATEWAY_IP dev eth0 metric 3523215360
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fi
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fi
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}
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if [[ ! -z "$NAMESPACE_ID" ]]; then
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update_default_gw 4
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update_default_gw 6
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fi
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if [ -z "$CONFIG_TYPE" ] || [ "$CONFIG_TYPE" == "separated" ]; then
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echo "no service integrated-vtysh-config" > /etc/frr/vtysh.conf
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rm -f /etc/frr/frr.conf
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elif [ "$CONFIG_TYPE" == "unified" ]; then
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echo "service integrated-vtysh-config" > /etc/frr/vtysh.conf
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rm -f /etc/frr/bgpd.conf /etc/frr/zebra.conf /etc/frr/staticd.conf \
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/etc/frr/bfdd.conf /etc/frr/ospfd.conf /etc/frr/pimd.conf
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fi
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chown -R frr:frr /etc/frr/
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chown root:root /usr/sbin/bgp-isolate
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chmod 0755 /usr/sbin/bgp-isolate
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chown root:root /usr/sbin/bgp-unisolate
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chmod 0755 /usr/sbin/bgp-unisolate
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mkdir -p /var/sonic
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echo "# Config files managed by sonic-config-engine" > /var/sonic/config_status
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exec /usr/local/bin/supervisord
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