编译cratedb 支持多集群节点部署

很多时候为了体验多集群的特性，但是默认是的3节点的，我们可以修改代码解决

参考代码修改

• 主要是关于企业license 服务的
  https://github.com/crate/crate/blob/master/enterprise/licensing/src/main/java/io/crate/license/EnterpriseLicenseService.java#L75
  修改参数为自己需要的数量

Dockerfile

需要参考官方docker 信息,配置（crate.yml&&log4j2.properties）以及docker-entrypoint.sh（注意自己的镜像需要添加执行权限）

 

## -*- docker-image-name: "docker-crate" -*-

#

# Crate Dockerfile

# https://github.com/crate/docker-crate

#

​

FROM centos:7

​

RUN groupadd crate && useradd -u 1000 -g crate -d /crate crate

​

COPY crate-4.4.0-SNAPSHOT-2788b17.tar.gz .

​

# install crate

RUN yum install -y yum-utils \

    && yum makecache \

    && yum install -y python36 openssl \

    && yum clean all \

    && rm -rf /var/cache/yum \

    && export PLATFORM="$( \

        case $(uname --m) in \

            x86_64)  echo x64_linux ;; \

            aarch64) echo aarch64_linux ;; \

        esac)" \

    && export GNUPGHOME="$(mktemp -d)" \

    && tar -xf crate-4.4.0-SNAPSHOT-2788b17.tar.gz -C /crate --strip-components=1 \

    && rm crate-4.4.0-SNAPSHOT-2788b17.tar.gz \

    && ln -sf /usr/bin/python3.6 /usr/bin/python3

​

# install crash

RUN curl -fSL -O https://cdn.crate.io/downloads/releases/crash_standalone_0.26.0 \

    && curl -fSL -O https://cdn.crate.io/downloads/releases/crash_standalone_0.26.0.asc \

    && export GNUPGHOME="$(mktemp -d)" \

    && gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 90C23FC6585BC0717F8FBFC37FAAE51A06F6EAEB \

    && gpg --batch --verify crash_standalone_0.26.0.asc crash_standalone_0.26.0 \

    && rm -rf "$GNUPGHOME" crash_standalone_0.26.0.asc \

    && mv crash_standalone_0.26.0 /usr/local/bin/crash \

    && chmod +x /usr/local/bin/crash

​

ENV PATH /crate/bin:$PATH

# Default heap size for Docker, can be overwritten by args

ENV CRATE_HEAP_SIZE 512M

​

RUN mkdir -p /data/data /data/log

​

VOLUME /data

​

WORKDIR /data

​

# http: 4200 tcp

# transport: 4300 tcp

# postgres protocol ports: 5432 tcp

EXPOSE 4200 4300 5432

​

# These COPY commands have been moved before the last one due to the following issues:

# https://github.com/moby/moby/issues/37965#issuecomment-448926448

# https://github.com/moby/moby/issues/38866

COPY --chown=1000:0 config/crate.yml /crate/config/crate.yml

COPY --chown=1000:0 config/log4j2.properties /crate/config/log4j2.properties

​

LABEL maintainer="Crate.io <office@crate.io>" \

    org.opencontainers.image.created="2021-01-06T13:49:59.918942" \

    org.opencontainers.image.title="crate" \

    org.opencontainers.image.description="CrateDB is a distributed SQL database handles massive amounts of machine data in real-time." \

    org.opencontainers.image.url="https://crate.io/products/cratedb/" \

    org.opencontainers.image.source="https://github.com/crate/docker-crate" \

    org.opencontainers.image.vendor="Crate.io" \

    org.opencontainers.image.version="4.4.0"

​

COPY docker-entrypoint.sh /

​

ENTRYPOINT ["/docker-entrypoint.sh"]

CMD ["crate"]

参考使用

5 节点的，具体参考github https://github.com/rongfengliang/cratedb4-4-clustere-learning

version: "3"

services:

  crate1:

    image: dalongrong/cratedb:4.4.0

    volumes:

    - "./cratedb/data1:/data"

    - "./cratedb/1.yaml:/crate/config/crate.yml"

    ports:

    - "4200:4200"

    - "4300:4300"

    - "5432:5432"

  crate2:

    image: dalongrong/cratedb:4.4.0

    volumes:

    - "./cratedb/data2:/data"

    - "./cratedb/2.yaml:/crate/config/crate.yml"

    ports:

    - "4201:4200"

    - "4301:4300"

    - "5433:5432"

  crate3:

    image: dalongrong/cratedb:4.4.0

    volumes:

    - "./cratedb/data3:/data"

    - "./cratedb/3.yaml:/crate/config/crate.yml"

    ports:

    - "4202:4200"

    - "4302:4300"

    - "5434:5432"

  crate4:

    image: dalongrong/cratedb:4.4.0

    volumes:

    - "./cratedb/data4:/data"

    - "./cratedb/4.yaml:/crate/config/crate.yml"

    ports:

    - "4203:4200"

    - "4303:4300"

    - "5435:5432"

  crate5:

    image: dalongrong/cratedb:4.4.0

    volumes:

    - "./cratedb/data5:/data"

    - "./cratedb/5.yaml:/crate/config/crate.yml"

    ports:

    - "4204:4200"

    - "4304:4300"

    - "5436:5432"

参考效果

 

 

说明

一个可用的docker镜像我已经push dockerhub了dalongrong/cratedb:4.4.0,但是推荐搭建测试环境使用，如果真要使用
无限制的企业特性最好还是购买企业license

参考资料

https://github.com/rongfengliang/cratedb4-4-clustere-learning
https://github.com/crate/docker-crate
https://github.com/crate/crate
https://github.com/crate/crate/blob/master/devs/docs/basics.rst