63 lines
3.5 KiB
Markdown
63 lines
3.5 KiB
Markdown
### Problem： Maven compilation failure with error such as `Error: not found: python2`
|
||
When you compile the project via Maven, it fails at module `apm-webapp` and the following error occurs.
|
||
|
||
Pay attention to keywords such as `node-sass` and `Error: not found: python2`.
|
||
|
||
```
|
||
[INFO] > node-sass@4.11.0 postinstall C:\XXX\skywalking\skywalking-ui\node_modules\node-sass
|
||
[INFO] > node scripts/build.js
|
||
|
||
[ERROR] gyp verb check python checking for Python executable "python2" in the PATH
|
||
[ERROR] gyp verb `which` failed Error: not found: python2
|
||
[ERROR] gyp verb `which` failed at getNotFoundError (C:\XXX\skywalking\skywalking-ui\node_modules\which\which.js:13:12)
|
||
[ERROR] gyp verb `which` failed at F (C:\XXX\skywalking\skywalking-ui\node_modules\which\which.js:68:19)
|
||
[ERROR] gyp verb `which` failed at E (C:\XXX\skywalking\skywalking-ui\node_modules\which\which.js:80:29)
|
||
[ERROR] gyp verb `which` failed at C:\XXX\skywalking\skywalking-ui\node_modules\which\which.js:89:16
|
||
[ERROR] gyp verb `which` failed at C:\XXX\skywalking\skywalking-ui\node_modules\isexe\index.js:42:5
|
||
[ERROR] gyp verb `which` failed at C:\XXX\skywalking\skywalking-ui\node_modules\isexe\windows.js:36:5
|
||
[ERROR] gyp verb `which` failed at FSReqWrap.oncomplete (fs.js:152:21)
|
||
|
||
[ERROR] gyp verb `which` failed code: 'ENOENT' }
|
||
[ERROR] gyp verb check python checking for Python executable "python" in the PATH
|
||
[ERROR] gyp verb `which` succeeded python C:\Users\XXX\AppData\Local\Programs\Python\Python37\python.EXE
|
||
[ERROR] gyp ERR! configure error
|
||
[ERROR] gyp ERR! stack Error: Command failed: C:\Users\XXX\AppData\Local\Programs\Python\Python37\python.EXE -c import sys; print "%s.%s.%s" % sys.version_info[:3];
|
||
[ERROR] gyp ERR! stack File "<string>", line 1
|
||
[ERROR] gyp ERR! stack import sys; print "%s.%s.%s" % sys.version_info[:3];
|
||
[ERROR] gyp ERR! stack ^
|
||
[ERROR] gyp ERR! stack SyntaxError: invalid syntax
|
||
[ERROR] gyp ERR! stack
|
||
[ERROR] gyp ERR! stack at ChildProcess.exithandler (child_process.js:275:12)
|
||
[ERROR] gyp ERR! stack at emitTwo (events.js:126:13)
|
||
[ERROR] gyp ERR! stack at ChildProcess.emit (events.js:214:7)
|
||
[ERROR] gyp ERR! stack at maybeClose (internal/child_process.js:925:16)
|
||
[ERROR] gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)
|
||
[ERROR] gyp ERR! System Windows_NT 10.0.17134
|
||
......
|
||
[INFO] server-starter-es7 ................................. SUCCESS [ 11.657 s]
|
||
[INFO] apm-webapp ......................................... FAILURE [ 25.857 s]
|
||
[INFO] apache-skywalking-apm .............................. SKIPPED
|
||
[INFO] apache-skywalking-apm-es7 .......................... SKIPPED
|
||
```
|
||
|
||
### Reason
|
||
|
||
The error has nothing to do with SkyWalking.
|
||
According to the issue here (https://github.com/sass/node-sass/issues/1176), if you live in countries where requesting resources from `GitHub` and `npmjs.org` runs slow, some precompiled binaries for dependency `node-sass` would fail to be downloaded during `npm install`, and npm would try to compile them itself. That's why `python2` is needed.
|
||
|
||
### Resolution
|
||
#### 1. Use mirror. For instance, if you're in China, please edit `skywalking\apm-webapp\pom.xml` as follows.
|
||
Find
|
||
```
|
||
<configuration>
|
||
<arguments>install --registry=https://registry.npmjs.org/</arguments>
|
||
</configuration>
|
||
```
|
||
Replace it with
|
||
```
|
||
<configuration>
|
||
<arguments>install --registry=https://registry.npm.taobao.org/ --sass_binary_site=https://npm.taobao.org/mirrors/node-sass/</arguments>
|
||
</configuration>
|
||
```
|
||
#### 2. Get a sufficiently powerful VPN.
|