5079de7647
Fix #5026 There is a race condition between zebra server accepts connections and bgpd tries to connect. Bgpd has a chance to try to connect before zebra is ready. In this scenario, bgpd will try again after 10 seconds and operate as normal within these 10 seconds. As a consequence, whatever bgpd tries to sent to zebra will be missing in the 10 seconds. To avoid such a scenario, bgpd should start after zebra is ready to accept connections.
34 lines
704 B
Bash
Executable File
34 lines
704 B
Bash
Executable File
#!/usr/bin/env bash
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addr="127.0.0.1"
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port=2601
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function help()
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{
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echo "This script aims to ensure zebra is ready to accept connections before starting bgpd"
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echo "Usage: $0 [options] [bgpd options]"
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echo "Options:"
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echo " -a Zebra address"
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echo " -o Zebra port"
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exit 1
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}
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while getopts ":a:o:h" opt; do
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case "${opt}" in
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h) help
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;;
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a) addr=${OPTARG}
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;;
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o) port=${OPTARG}
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;;
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esac
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done
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shift $((OPTIND-1))
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timeout 5s bash -c -- "until </dev/tcp/${addr}/${port}; do sleep 0.1;done"
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if [ "$?" != "0" ]; then
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logger -p error "Error: zebra is not ready to accept connections"
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fi
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exec /usr/lib/frr/bgpd "$@"
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