fix keepalive error in config file

Dockerfile

@@ -1,19 +1,35 @@
 FROM alpine:latest
+#FROM ubuntu:latest
 
-# tested alpine : 3.19
+RUN apk --update -t add \
-# keepalived    : https://pkgs.alpinelinux.org/package/edge/community/armhf/keepalived
-
-RUN apk update \
-    && apk upgrade \
-    && apk add --no-cache \
         keepalived \
         curl \
         ca-certificates \
+        iproute2 \
+        grep \
+        bash \
+        tcpdump \
+        tini \
+        sed \
     && update-ca-certificates \
-    && rm -rf /var/cache/apk/* \
+    && rm -rf /var/cache/apk/* /tmp/* \
     && keepalived --version
 
-COPY keepalived.sh /etc/keepalived/keepalived.sh
+# RUN apt update \
-RUN chmod +x /etc/keepalived/keepalived.sh; chown root:root /etc/keepalived/keepalived.sh
+#     && apt install -y keepalived vim curl ca-certificates \
+#     && update-ca-certificates \
+#     && rm -rf /var/cache/apk/* /tmp/*  \
+#     && keepalived --version
 
-CMD ["/usr/sbin/keepalived", "--dont-fork", "--dump-conf", "--vrrp", "--log-detail", "--log-console"]
+COPY run.sh /usr/local/bin/
+COPY keepalived.tmpl /etc/keepalived/
+
+ENTRYPOINT ["/sbin/tini", "--"]
+CMD ["run.sh"]
+
+#RUN chmod 644 /etc/keepalived/keepalived.conf; chown root:root /etc/keepalived/keepalived.conf
+# COPY keepalived.sh /etc/keepalived/keepalived.sh
+# RUN chmod 755 /etc/keepalived/keepalived.sh; chown root:root /etc/keepalived/keepalived.sh
+
+#ENTRYPOINT ["/usr/sbin/keepalived", "--dont-fork", "--dump-conf", "--vrrp", "--log-detail", "--log-console"]
+#CMD ["/usr/sbin/keepalived", "--dont-fork", "--dump-conf", "--vrrp", "--log-detail", "--log-console", "-f","/etc/keepalived/keepalived.conf"]

keepalived.conf

@@ -1,41 +0,0 @@
-global_defs {
-    #Hostname will be used by default
-    router_id master_node
-    #vrrp_version                2
-    #vrrp_garp_master_delay      1
-    #vrrp_garp_master_refresh    60
-    #Uncomment the next line if you'd like to use unique multicast groups
-    #vrrp_mcast_group4 224.0.0.{{VRID}}
-    #script_user                 root
-    #enable_script_security
-}
-
-vrrp_script chk_haproxy {
-    script       "/etc/keepalived/keepalived.sh"
-    timeout 1
-    interval 1   # check every 1 second
-    fall 2       # require 2 failures for KO
-    rise 2       # require 2 successes for OK
-}
-
-vrrp_instance VI_1 {
-    state               MASTER
-    interface           eth0
-    virtual_router_id   51
-    priority            100
-    advert_int          1
-    nopreempt                           #Prevent fail-back
-
-    track_script {
-        chk_haproxy
-    }
-
-    authentication {
-        auth_type PASS
-        auth_pass 1111
-    }
-
-    virtual_ipaddress {
-        192.168.0.247
-    }
-}

keepalived.tmpl

@@ -0,0 +1,20 @@
+vrrp_instance VI__routerid_ {
+    state _state_
+    priority _priority_
+
+    interface _interface_
+    virtual_router_id _routerid_
+
+    advert_int 2
+
+    unicast_peer {
+    }
+
+    authentication {
+        auth_type PASS
+        auth_pass _password_
+    }
+
+    virtual_ipaddress {
+    }
+}

run.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+
+# 환경변수 설정
+if [ -z "${KEEPALIVED_ROUTER_ID}" ] || [ -z "${KEEPALIVED_UNICAST_PEERS}" ] || [ -z "${KEEPALIVED_VIRTUAL_IPS}" ]; then
+    echo "Error: Variables 'KEEPALIVED_ROUTER_ID' or 'KEEPALIVED_UNICAST_PEERS' or 'KEEPALIVED_VIRTUAL_IPS' is not specified!"
+    exit 1
+fi
+
+if [ -z "${KEEPALIVED_STATE}" ]; then
+    export KEEPALIVED_STATE="BACKUP"
+fi
+if [ -z "${KEEPALIVED_PRIORITY}" ] && [ "${KEEPALIVED_STATE^^}" == "BACKUP" ]; then
+    export KEEPALIVED_PRIORITY="$(($RANDOM%199))"
+fi
+if [ -z "${KEEPALIVED_PRIORITY}" ] && [ "${KEEPALIVED_STATE^^}" == "MASTER" ]; then
+    export KEEPALIVED_PRIORITY="200"
+fi
+if [ -z "${KEEPALIVED_INTERFACE}" ]; then
+    export KEEPALIVED_INTERFACE="eth0"
+fi
+if [ -z "${KEEPALIVED_PASSWORD}" ]; then
+    export KEEPALIVED_PASSWORD="P@ssw0rd"
+fi
+
+# 구성 파일 설정
+cp -f /etc/keepalived/keepalived.tmpl /etc/keepalived/keepalived.conf
+chmod 644 /etc/keepalived/keepalived.conf
+chown root:root /etc/keepalived/keepalived.conf
+
+sed -i "s/_routerid_/${KEEPALIVED_ROUTER_ID}/g" /etc/keepalived/keepalived.conf && \
+sed -i "s/_state_/${KEEPALIVED_STATE}/g" /etc/keepalived/keepalived.conf && \
+sed -i "s/_priority_/${KEEPALIVED_PRIORITY}/g" /etc/keepalived/keepalived.conf && \
+sed -i "s/_interface_/${KEEPALIVED_INTERFACE}/g" /etc/keepalived/keepalived.conf && \
+sed -i "s/_password_/${KEEPALIVED_PASSWORD}/g" /etc/keepalived/keepalived.conf && \
+
+num=`echo ${KEEPALIVED_UNICAST_PEERS} | sed 's/,/\n/g' | wc -l`
+for n in $(seq ${num}); do
+    ip=$(echo ${KEEPALIVED_UNICAST_PEERS} | sed 's/,/\n/g' | sed -n ${n}p)
+    sed -i "/unicast_peer/a $(echo -e ${ip})" /etc/keepalived/keepalived.conf
+done
+
+num=`echo ${KEEPALIVED_VIRTUAL_IPS} | sed 's/,/\n/g' | wc -l`
+for n in $(seq ${num}); do
+    ip=$(echo ${KEEPALIVED_VIRTUAL_IPS} | sed 's/,/\n/g' | sed -n ${n}p)
+    sed -i "/virtual_ipaddress/a ${ip}" /etc/keepalived/keepalived.conf
+done
+
+# keepalive 시작
+rm -rf /var/run/keepalived
+if (pgrep -fl keepalived >/dev/null 2>&1); then
+    echo "Info: keepalived process already running, killing..."
+    pkill -9 keepalived
+fi
+keepalived --use-file /etc/keepalived/keepalived.conf --dont-fork --log-console &
+
+sleep 1
+echo "Info: keepalived process started!"
+
+# TRAP 처리
+trap "stop; exit 0;" SIGHUP SIGINT SIGQUIT SIGKILL SIGTERM
+stop() {
+    echo "Info: killing keepalived process..."
+    pkill -2 keepalived
+    exit 0
+}
+
+# 동작확인
+while (pgrep -fl keepalived >/dev/null 2>&1)
+do
+    sleep 5
+done
+echo "Error: keepalived is not running, exiting..."
+exit 1