canal-adapter 1.1.7构建镜像

canal-adapter 可以实现mysql表数据同步到ES的适配器，官方没有提供docker镜像，可自行构建镜像简单几步即可实现。

准备安装包

官网地址： https://github.com/alibaba/canal

https://github.com/alibaba/canal/releases/tag/canal-1.1.7

https://github.com/alibaba/canal/releases/download/canal-1.1.7/canal.adapter-1.1.7.tar.gz

编写Dockerfile

FROM openjdk:8-jre-alpine
WORKDIR /opt/canal/canal-adapter
COPY bin   /opt/canal/canal-adapter/bin
COPY conf   /opt/canal/canal-adapter/conf
COPY lib   /opt/canal/canal-adapter/lib
COPY logs   /opt/canal/canal-adapter/logs
COPY plugin   /opt/canal/canal-adapter/plugin
ENV LANG=C.UTF-8
ENV TZ=Asia/Shanghai
CMD ["sh", "-c", "sh /opt/canal/canal-adapter/bin/startup.sh && tail -F /opt/canal/canal-adapter/logs/adapter.log"]

LABEL version="1.1.7"

修改启动脚本startup.sh

#!/bin/bash

current_path=`pwd`
case "`uname`" in
    Linux)
        bin_abs_path=$(readlink -f $(dirname $0))
        ;;
    *)
        bin_abs_path=`cd $(dirname $0); pwd`
        ;;
esac
base=${bin_abs_path}/..
export LANG=en_US.UTF-8
export BASE=$base

if [ -f $base/bin/adapter.pid ] ; then
    echo "found adapter.pid , Please run stop.sh first ,then startup.sh" 2>&2
    exit 1
fi

if [ ! -d $base/logs ] ; then
    mkdir -p $base/logs
fi

## set java path
if [ -z "$JAVA" ] ; then
  JAVA=$(which java)
fi

ALIBABA_JAVA="/usr/alibaba/java/bin/java"
TAOBAO_JAVA="/opt/taobao/java/bin/java"
if [ -z "$JAVA" ]; then
  if [ -f $ALIBABA_JAVA ] ; then
      JAVA=$ALIBABA_JAVA
  elif [ -f $TAOBAO_JAVA ] ; then
      JAVA=$TAOBAO_JAVA
  else
      echo "Cannot find a Java JDK. Please set either set JAVA or put java (>=1.5) in your PATH." 2>&2
    exit 1
  fi
fi

case "$#"
in
0 )
  ;;
2 )
  if [ "$1" = "debug" ]; then
    DEBUG_PORT=$2
    DEBUG_SUSPEND="n"
    JAVA_DEBUG_OPT="-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=$DEBUG_PORT,server=y,suspend=$DEBUG_SUSPEND"
  fi
  ;;
* )
  echo "THE PARAMETERS MUST BE TWO OR LESS.PLEASE CHECK AGAIN."
  exit;;
esac

str=`file -L $JAVA | grep 64-bit`
if [ -n "$str" ]; then
    JAVA_OPTS="-server -Xms2048m -Xmx3072m -Xmn1024m -XX:SurvivorRatio=2 -Xss256k -XX:+DisableExplicitGC -XX:+HeapDumpOnOutOfMemoryError"
else
    JAVA_OPTS="-server -Xms1024m -Xmx1024m -XX:NewSize=256m -XX:MaxNewSize=256m -XX:MaxPermSize=128m "
fi

JAVA_OPTS=" $JAVA_OPTS -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -Dfile.encoding=UTF-8"
ADAPTER_OPTS="-DappName=canal-adapter"

for i in $base/lib/*;
    do CLASSPATH=$i:"$CLASSPATH";
done

CLASSPATH="$base/conf:$CLASSPATH";

echo "cd to $bin_abs_path for workaround relative path"
cd $bin_abs_path

echo CLASSPATH :$CLASSPATH
exec $JAVA $JAVA_OPTS $JAVA_DEBUG_OPT $ADAPTER_OPTS -classpath .:$CLASSPATH com.alibaba.otter.canal.adapter.launcher.CanalAdapterApplication