update

keepalived/ADD/ccmd

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+##################################################
+# Docker                                         #
+# - --privileged                                 #
+# - --net host                                   #
+# Mount dir                                      #
+# - /etc/keepalived/                             #
+# - LOG_DIR                                      #
+##################################################
+
+set -euo pipefail
+export LANG=en_US.UTF-8
+trap Quit EXIT
+
+PIDS=
+GOT_SIGTERM=
+LOG_DIR='/var/log/keepalived'
+
+function Print {
+    local file=/dev/null
+    [ '-f' = "$1" ] && file=$2 && shift && shift
+    date +"[%F %T] $*" | tee -a $file
+}
+
+function Quit {
+    Print killing keepalived ...
+    while :; do
+        pkill -f keepalived && Print killing keepalived ... || break
+        sleep 1
+    done
+    Print Container stopped.
+    test -n "$GOT_SIGTERM"
+}
+
+function StartProc {
+    Print Start keeplived ...
+    rm -rf /var/run/keepalived
+    keepalived -f /etc/keepalived/keepalived.conf -lDGn &>> $LOG_DIR/keepalived.log &
+    PIDS="$PIDS $!"
+}
+
+function Main {
+    local pid=
+    StartProc
+    trap "GOT_SIGTERM=1; Print Got SIGTERM ..." SIGTERM
+    while [ -z "$GOT_SIGTERM" ] && sleep 1; do
+        for pid in $PIDS; do
+            [ ! -e /proc/$pid ] && Print Unexpected error! && exit
+        done
+    done
+}
+
+# Start here
+Main
+

keepalived/Dockerfile

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+ARG             ARCH
+FROM            harbor.colben.cn/general/alpine$ARCH
+MAINTAINER      Colben colbenlee@gmail.com
+ADD             --chown=root:root /ADD/ /opt/
+RUN             apk update \
+                    && apk add --no-cache keepalived \
+                    && mkdir -p /var/log/keepalived \
+                    && rm -f /etc/keepalived/keepalived.conf \
+                    && rm -rf /var/cache/apk/*
+CMD             ["/opt/ccmd"]
+

keepalived/README.md

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+# 构建 keepalived 镜像
+
+## 定制
+- 安装 keepalived
+- docker 参数: --privileged --net host
+
+## 外挂目录和文件
+- /etc/keepalived: keepalived 配置目录
+- /var/log/keepalived: keepalived 日志目录
+
+## 案例
+- [/OPS/GeneralDocker/mysql/Demo/TowMasterNodes/](/OPS/GeneralDocker/mysql/Demo/TowMasterNodes/): 两台 mysql 高可用，不抢占模式
+

keepalived/keepalived.sh

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+#!/bin/bash
+
+#=========================================
+# Author   : colben
+#=========================================
+
+set -euo pipefail
+export LANG=en_US.UTF-8
+trap Quit EXIT
+
+[ 'x86_64' == "$(uname -m)" ] && ARCH='' || ARCH="-$(uname -m)"
+ROOT_DIR="$(cd $(dirname $0) && pwd)"
+IMAGE="harbor.colben.cn/general/$(basename ${0%.sh})$ARCH:latest"
+
+if [ -t 0 ]; then
+    function Print { echo -e "\033[36;1m$(date +'[%F %T]')\033[32;1m $*\033[0m"; }
+    function Warn { echo -e "\033[36;1m$(date +'[%F %T]')\033[33;1m $*\033[0m"; }
+    function Error { echo -e "\033[36;1m$(date +'[%F %T]')\033[31;1m $*\033[0m"; exit 1; }
+else
+    function Print { echo -e "$(date +'[%F %T INFO]') $*"; }
+    function Warn { echo -e "$(date +'[%F %T WARN]') $*"; }
+    function Error { echo -e "$(date +'[%F %T ERROR]') $*"; exit 1; }
+fi
+
+function Quit {
+    local exitCode=$?
+    [ 0 -ne $exitCode ] && Error Failed to build or push image!
+    [ -z "${END:-}" ] && echo && Error Interrupted manually!
+    Print Succeeded to build and push image.
+}
+
+function YesOrNo {
+    Warn $*
+    local sw=
+    while :; do
+        read -p '(Yes/No/Quit) ' -n1 sw
+        [[ "$sw" =~ ^Y|y$ ]] && echo && return 0
+        [[ "$sw" =~ ^N|n$ ]] && echo && return 1
+        [[ "$sw" =~ ^Q|q$ ]] && echo && exit 0
+        [ -n "$sw" ] && echo
+    done
+}
+
+function Update {
+    :
+}
+
+function Build {
+    local yn
+    cd $ROOT_DIR
+    docker images --format='{{.Repository}}:{{.Tag}}' | grep "^$IMAGE$" \
+        && Warn Removing image $IMAGE ... \
+        && docker rmi $IMAGE
+    Warn Building image: $IMAGE ...
+    docker build --force-rm --build-arg ARCH="$ARCH" -t $IMAGE .
+    YesOrNo Push image: $IMAGE? && docker push $IMAGE
+}
+
+function Main {
+    Update
+    Build
+    END=1
+}
+
+# Start here
+Main
+