fix keepalive error in config file
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Dockerfile
36
Dockerfile
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@ -1,19 +1,35 @@
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FROM alpine:latest
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#FROM ubuntu:latest
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# tested alpine : 3.19
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# keepalived : https://pkgs.alpinelinux.org/package/edge/community/armhf/keepalived
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RUN apk update \
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&& apk upgrade \
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&& apk add --no-cache \
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RUN apk --update -t add \
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keepalived \
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curl \
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ca-certificates \
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iproute2 \
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grep \
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bash \
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tcpdump \
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tini \
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sed \
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&& update-ca-certificates \
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&& rm -rf /var/cache/apk/* \
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&& rm -rf /var/cache/apk/* /tmp/* \
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&& keepalived --version
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COPY keepalived.sh /etc/keepalived/keepalived.sh
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RUN chmod +x /etc/keepalived/keepalived.sh; chown root:root /etc/keepalived/keepalived.sh
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# RUN apt update \
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# && apt install -y keepalived vim curl ca-certificates \
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# && update-ca-certificates \
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# && rm -rf /var/cache/apk/* /tmp/* \
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# && keepalived --version
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CMD ["/usr/sbin/keepalived", "--dont-fork", "--dump-conf", "--vrrp", "--log-detail", "--log-console"]
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COPY run.sh /usr/local/bin/
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COPY keepalived.tmpl /etc/keepalived/
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ENTRYPOINT ["/sbin/tini", "--"]
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CMD ["run.sh"]
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#RUN chmod 644 /etc/keepalived/keepalived.conf; chown root:root /etc/keepalived/keepalived.conf
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# COPY keepalived.sh /etc/keepalived/keepalived.sh
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# RUN chmod 755 /etc/keepalived/keepalived.sh; chown root:root /etc/keepalived/keepalived.sh
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#ENTRYPOINT ["/usr/sbin/keepalived", "--dont-fork", "--dump-conf", "--vrrp", "--log-detail", "--log-console"]
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#CMD ["/usr/sbin/keepalived", "--dont-fork", "--dump-conf", "--vrrp", "--log-detail", "--log-console", "-f","/etc/keepalived/keepalived.conf"]
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@ -1,41 +0,0 @@
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global_defs {
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#Hostname will be used by default
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router_id master_node
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#vrrp_version 2
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#vrrp_garp_master_delay 1
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#vrrp_garp_master_refresh 60
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#Uncomment the next line if you'd like to use unique multicast groups
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#vrrp_mcast_group4 224.0.0.{{VRID}}
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#script_user root
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#enable_script_security
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}
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vrrp_script chk_haproxy {
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script "/etc/keepalived/keepalived.sh"
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timeout 1
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interval 1 # check every 1 second
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fall 2 # require 2 failures for KO
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rise 2 # require 2 successes for OK
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}
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vrrp_instance VI_1 {
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state MASTER
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interface eth0
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virtual_router_id 51
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priority 100
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advert_int 1
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nopreempt #Prevent fail-back
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track_script {
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chk_haproxy
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}
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authentication {
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auth_type PASS
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auth_pass 1111
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}
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virtual_ipaddress {
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192.168.0.247
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}
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}
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@ -0,0 +1,20 @@
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vrrp_instance VI__routerid_ {
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state _state_
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priority _priority_
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interface _interface_
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virtual_router_id _routerid_
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advert_int 2
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unicast_peer {
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}
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authentication {
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auth_type PASS
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auth_pass _password_
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}
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virtual_ipaddress {
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}
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}
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@ -0,0 +1,73 @@
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#!/bin/bash
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# 환경변수 설정
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if [ -z "${KEEPALIVED_ROUTER_ID}" ] || [ -z "${KEEPALIVED_UNICAST_PEERS}" ] || [ -z "${KEEPALIVED_VIRTUAL_IPS}" ]; then
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echo "Error: Variables 'KEEPALIVED_ROUTER_ID' or 'KEEPALIVED_UNICAST_PEERS' or 'KEEPALIVED_VIRTUAL_IPS' is not specified!"
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exit 1
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fi
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if [ -z "${KEEPALIVED_STATE}" ]; then
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export KEEPALIVED_STATE="BACKUP"
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fi
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if [ -z "${KEEPALIVED_PRIORITY}" ] && [ "${KEEPALIVED_STATE^^}" == "BACKUP" ]; then
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export KEEPALIVED_PRIORITY="$(($RANDOM%199))"
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fi
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if [ -z "${KEEPALIVED_PRIORITY}" ] && [ "${KEEPALIVED_STATE^^}" == "MASTER" ]; then
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export KEEPALIVED_PRIORITY="200"
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fi
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if [ -z "${KEEPALIVED_INTERFACE}" ]; then
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export KEEPALIVED_INTERFACE="eth0"
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fi
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if [ -z "${KEEPALIVED_PASSWORD}" ]; then
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export KEEPALIVED_PASSWORD="P@ssw0rd"
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fi
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# 구성 파일 설정
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cp -f /etc/keepalived/keepalived.tmpl /etc/keepalived/keepalived.conf
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chmod 644 /etc/keepalived/keepalived.conf
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chown root:root /etc/keepalived/keepalived.conf
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sed -i "s/_routerid_/${KEEPALIVED_ROUTER_ID}/g" /etc/keepalived/keepalived.conf && \
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sed -i "s/_state_/${KEEPALIVED_STATE}/g" /etc/keepalived/keepalived.conf && \
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sed -i "s/_priority_/${KEEPALIVED_PRIORITY}/g" /etc/keepalived/keepalived.conf && \
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sed -i "s/_interface_/${KEEPALIVED_INTERFACE}/g" /etc/keepalived/keepalived.conf && \
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sed -i "s/_password_/${KEEPALIVED_PASSWORD}/g" /etc/keepalived/keepalived.conf && \
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num=`echo ${KEEPALIVED_UNICAST_PEERS} | sed 's/,/\n/g' | wc -l`
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for n in $(seq ${num}); do
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ip=$(echo ${KEEPALIVED_UNICAST_PEERS} | sed 's/,/\n/g' | sed -n ${n}p)
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sed -i "/unicast_peer/a $(echo -e ${ip})" /etc/keepalived/keepalived.conf
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done
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num=`echo ${KEEPALIVED_VIRTUAL_IPS} | sed 's/,/\n/g' | wc -l`
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for n in $(seq ${num}); do
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ip=$(echo ${KEEPALIVED_VIRTUAL_IPS} | sed 's/,/\n/g' | sed -n ${n}p)
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sed -i "/virtual_ipaddress/a ${ip}" /etc/keepalived/keepalived.conf
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done
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# keepalive 시작
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rm -rf /var/run/keepalived
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if (pgrep -fl keepalived >/dev/null 2>&1); then
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echo "Info: keepalived process already running, killing..."
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pkill -9 keepalived
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fi
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keepalived --use-file /etc/keepalived/keepalived.conf --dont-fork --log-console &
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sleep 1
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echo "Info: keepalived process started!"
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# TRAP 처리
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trap "stop; exit 0;" SIGHUP SIGINT SIGQUIT SIGKILL SIGTERM
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stop() {
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echo "Info: killing keepalived process..."
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pkill -2 keepalived
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exit 0
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}
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# 동작확인
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while (pgrep -fl keepalived >/dev/null 2>&1)
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do
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sleep 5
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done
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echo "Error: keepalived is not running, exiting..."
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exit 1
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