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问为什么Gerrit在Docker中没有找到JAVA_HOME？
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Stack Overflow用户

提问于 2020-06-18 22:17:16

回答 2查看 390关注 0票数 0

我已经将Gerrit以及依赖项httpd和postgres安装到了Docker容器中。docker-compose.yml文件如下所示：

version: '3.1'

services:
  gerrit:
    image: gerritcodereview/gerrit
    environment:
      - CANONICAL_WEB_URL=http://ooi-pmo-prd02.whoi.edu:8080/
    volumes:
      - ./gerrit/etc:/var/gerrit/etc/
      - ./gerrit/git:/var/gerrit/git/
      - ./gerrit/index:/var/gerrit/index/
      - ./gerrit/cache:/var/gerrit/cache/
    ports:
      - "29418:29418"
    links:
      - postgres
    depends_on:
      - postgres

  apache:
    image: httpd
    volumes:
      - ./httpd/httpd.conf:/usr/local/apache2/conf/httpd.conf
      - ./httpd/.htpasswd:/usr/local/apache2/conf/.htpasswd
    ports:
      - "8080:80"

  postgres:
    image: postgres:9.6
    environment:
      - POSTGRES_USER=gerrit2
      - POSTGRES_PASSWORD=secret
      - POSTGRES_DB=reviewdb
    volumes:
      - ./postgres/:/var/lib/postgresql/data

Apache和Postgres启动没有问题，但是Java无法启动，因为找不到有效的JDK或JRE，就好像它没有在我的gerrit.config文件(如下所示)中看到JAVA_HOME环境变量或javaHome选项：

[gerrit]
        basePath = git
        canonicalWebUrl = http://ooi-pmo-prd02.whoi.edu:8080/
        serverId = 85d6f505-5412-4eef-9f26-e844e9efd258
[database]
        type = postgresql
        hostname = localhost
        database = reviewdb
        username = gerrit2
[index]
        type = LUCENE
[auth]
        type = HTTP
        logoutUrl = http://aa:aa@ooi-pmo-prd02.whoi.edu:8080/logout
        httpHeader =
[sendemail]
        smtpServer = localhost
        smtpUser = gerrit2
[container]
        user = root
        javaHome = /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.242.b08-0.el7_7.x86_64/jre
[httpd]
        listenUrl = http://ooi-pmo-prd02.whoi.edu:8080/
[cache]
        directory = cache
[sshd]
        listenAddress = *:29418
[user]
        name = gerrit2
        email = pmena@whoi.edu

在启动时，gerrit会立即失败，并显示以下错误：

pmena@ooi-pmo-prd02=> docker logs gerrit_gerrit_1
Running Gerrit ...
Cannot find a JRE or JDK. Please ensure that the JAVA_HOME environment
variable or container.javaHome in /var/gerrit/etc/gerrit.config is
set to a valid >=1.8 JRE location

尽管JAVA_HOME与上面指定的JRE匹配，但这是有效的：

pmena@ooi-pmo-prd02=> echo $JAVA_HOME
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.242.b08-0.el7_7.x86_64/jre
pmena@ooi-pmo-prd02=> ls -l /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.242.b08-0.el7_7.x86_64/jre
total 4
drwxr-xr-x. 2 root root  172 Apr  9 14:04 bin
drwxr-xr-x. 9 root root 4096 Apr  9 14:02 lib
pmena@ooi-pmo-prd02=> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.242.b08-0.el7_7.x86_64/jre/bin/java -version
openjdk version "1.8.0_242"
OpenJDK Runtime Environment (build 1.8.0_242-b08)
OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)

当Gerrit在Docker容器中运行时，让它“看到”Java有什么诀窍吗？

java

docker

gerrit

回答 2

Stack Overflow用户

发布于 2020-08-07 15:22:48

docker-compose with image: gerritcodereview/gerrit:3.1.2

我执行-it到gerrit获取java_home

bash-4.2$ ls -hl  /usr/lib/jvm/
total 0
drwxr-xr-x. 3 root root 17 Dec 14  2019 java-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64
lrwxrwxrwx. 1 root root 21 Dec 14  2019 jre -> /etc/alternatives/jre
lrwxrwxrwx. 1 root root 27 Dec 14  2019 jre-1.8.0 -> /etc/alternatives/jre_1.8.0
lrwxrwxrwx. 1 root root 35 Dec 14  2019 jre-1.8.0-openjdk -> /etc/alternatives/jre_1.8.0_openjdk
lrwxrwxrwx. 1 root root 51 Dec 14  2019 jre-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64 -> java-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64/jre
lrwxrwxrwx. 1 root root 29 Dec 14  2019 jre-openjdk -> /etc/alternatives/jre_openjdk

因此您可以在gerrit.config中设置容器

[container]
  user = gerrit
  javaOptions = -Dfile.encoding=UTF-8
  javaHome = "/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64/jre"

票数 1

Stack Overflow用户

发布于 2020-06-19 03:26:44

通过输入docker run --rm -it --entrypoint /bin/cat gerritcodereview/gerrit /var/gerrit/etc/gerrit.config，我能够找到gerrit对其Java配置的期望，这是我在gerrit.config文件的[container]部分下输入的。为了确认我使用的是正确的"javaHome"，我在Gerrit容器中执行了以下操作：

pmena@ooi-pmo-prd02=> docker run --rm -it --entrypoint /bin/bash gerritcodereview/gerrit
bash-4.2$ ls -l /etc/alternatives/java
lrwxrwxrwx. 1 root root 73 Nov 15  2019 /etc/alternatives/java -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64/jre/bin/java
bash-4.2$ ls -l /etc/alternatives/jre
lrwxrwxrwx. 1 root root 64 Nov 15  2019 /etc/alternatives/jre -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.232.b09-0.el7_7.x86_64/jre

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/62452085

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