ansible 命令模块：JMeter msg：[Errno 2] 没有那个文件或目录

Question

Ansible 1.9.2/最新版本。操作系统：CentOS 6.7/更高版本 JAVA_HOME、PATH 变量和所有其他设置都正确。

我的 perf_tests/tasks/main.yml 中有以下剧本运行。为了仅运行此剧本，我正在使用 Ansible 标签。

# Run JMeter tests
- name: Run JMeter test(s)
#  command: "export PATH={{ jdk_install_dir }}/bin:$PATH && export JAVA_HOME={{ jdk_install_dir }} && {{ jmeter_install_dir }}/bin/jmeter -n -t {{ common_download_dir}}/perf_tests/ProjectTest1.jmx -l {{ common_download_dir}}/perf_tests/log_jmeter_ProjectTest1.jtl"
  command: export PATH={{ jdk_install_dir }}/bin:$PATH && export JAVA_HOME={{ jdk_install_dir }} && /apps/jmeter/apache-jmeter-2.13/bin/jmeter -n -t /tmp/perf_tests/ProjectTest1.jmx -l /tmp/perf_tests/log_jmeter_ProjectTest1.jtl
  become_user: "{{ common_user }}"
  tags:
     - giga

JMeter 可执行文件所需的文件存在于目标机器上，我在 ansible 中使用“命令”模块来启动 JMeter。

[appuser@jmeter01 ~]$ ls -l /apps/jmeter/apache-jmeter-2.13/bin/jmeter /tmp/perf_tests/ProjectTest1.jmx
-rwxr-xr-x. 1 appuser appgroup  5589 Mar  8  2015 /apps/jmeter/apache-jmeter-2.13/bin/jmeter
-rw-r--r--. 1 appuser appgroup 50194 Oct  2 12:19 /tmp/perf_tests/ProjectTest1.jmx
[appuser@jmeter01 ~]$

[appuser@jmeter01 ~]$ which java
/apps/jdk/jdk1.7.0_67/bin/java

当我在 .jmx 文件上运行上面的 playbook run jmeter 以生成结果 .jtl 文件（使用 ANSIBLE）时，错误代码为 2（如下所示）：msg: [Errno 2] No such file或目录

ANSIBLE 输出：

TASK: [perf_tests | Run JMeter test(s)] ***************************************
<jmeter01.perf.jenkins> ESTABLISH CONNECTION FOR USER: confman on PORT 22 TO jmeter01.perf.jenkins
<jmeter01.perf.jenkins> REMOTE_MODULE command export PATH=/apps/jdk/jdk1.7.0_67/bin:$PATH && export JAVA_HOME=/apps/jdk/jdk1.7.0_67 && /apps/jmeter/apache-jmeter-2.13/bin/jmeter -n -t /tmp/perf_tests/ProjectTest1.jmx -l /tmp/perf_tests/log_jmeter_ProjectTest1.jtl
<jmeter01.perf.jenkins> EXEC /bin/sh -c 'mkdir -p /tmp/ansible-tmp-1443821195.89-232957509929426 && chmod a+rx /tmp/ansible-tmp-1443821195.89-232957509929426 && echo /tmp/ansible-tmp-1443821195.89-232957509929426'
<jmeter01.perf.jenkins> PUT /tmp/tmp6fAr1W TO /tmp/ansible-tmp-1443821195.89-232957509929426/command
<jmeter01.perf.jenkins> EXEC /bin/sh -c 'chmod a+r /tmp/ansible-tmp-1443821195.89-232957509929426/command'
<jmeter01.perf.jenkins> EXEC /bin/sh -c 'sudo -k && sudo -H -S -p "[sudo via ansible, key=pkivlaidiolrcxvyxxixeysvrfkpvroy] password: " -u appuser /bin/sh -c '"'"'echo BECOME-SUCCESS-pkivlaidiolrcxvyxxixeysvrfkpvroy; LANG=en_US.UTF-8 LC_CTYPE=en_US.UTF-8 /usr/bin/python /tmp/ansible-tmp-1443821195.89-232957509929426/command'"'"''
<jmeter01.perf.jenkins> EXEC /bin/sh -c 'rm -rf /tmp/ansible-tmp-1443821195.89-232957509929426/ >/dev/null 2>&1'
failed: [jmeter01.perf.jenkins] => {"cmd": "export PATH=/apps/jdk/jdk1.7.0_67/bin:/sbin:/bin:/usr/sbin:/usr/bin '&&' export JAVA_HOME=/apps/jdk/jdk1.7.0_67 '&&' /apps/jmeter/apache-jmeter-2.13/bin/jmeter -n -t /tmp/perf_tests/ProjectTest1.jmx -l /tmp/perf_tests/log_jmeter_ProjectTest1.jtl", "failed": true, "rc": 2}
msg: [Errno 2] No such file or directory

FATAL: all hosts have already failed -- aborting

PLAY RECAP ********************************************************************

ansible 的 -vvvv 详细输出中上面的“cmd”显示，Ansible 成功通过/扩展了所有内容以调用 jmeter 命令，但它失败了。

如果我转到远程机器 (jmeter01) 和“appuser”并运行命令，它工作正常并成功创建 -l 选项提供的 .jtl 结果文件。

[appuser@jmeter01 ~]$ /apps/jmeter/apache-jmeter-2.13/bin/jmeter -n -t /tmp/perf_tests/ProjectTest1.jmx -l /tmp/perf_tests/log_jmeter_ProjectTest1.jtl
Creating summariser <summary>
Created the tree successfully using /tmp/perf_tests/ProjectTest1.jmx
Starting the test @ Fri Oct 02 17:23:50 EDT 2015 (1443821030343)
Waiting for possible shutdown message on port 4445
summary =    240 in   4.4s =   54.0/s Avg:    82 Min:     2 Max:  1113 Err:     0 (0.00%)
Tidying up ...    @ Fri Oct 02 17:23:55 EDT 2015 (1443821035009)
... end of run
[appuser@jmeter01 ~]$ ls -l /tmp/perf_tests
total 80
-rw-r--r--. 1 appuser appgroup 50194 Oct  2 12:19 ProjectTest1.jmx
-rw-r--r--. 1 appuser appgroup 22412 Oct  2 17:23 log_jmeter_ProjectTest1.jtl
drwxr-xr-x. 3 appuser appgroup  4096 Oct  2 12:19 META-INF
[appuser@jmeter01 ~]$

我很困惑为什么 JMeter 在使用 Ansible 运行时会出现这个错误！！！?

Answer 1

您不能使用export或&&与command模块一起使用，因为它直接执行命令，而不是通过 shell，并且export是内置的 shell。

你想要这个shell模块。

比较以下输出：

ansible myserver -m command -a "echo Hello && echo Goodbye"
ansible myserver -m command -a "export GREET=Hello && echo '$GREET'"

ansible myserver -m shell -a "echo Hello && echo Goodbye"
ansible myserver -m shell -a "export GREET=Hello && echo '$GREET'"

你可以清楚地看到这一点。