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linux Message: unknown error: unable to discover open pages

资源编号:76018 Python 相关Bug Python 热度：195

最简单的方法是重启

ps -axu | grep chromedriver 继续看进程：
```
ps -aux | grep chromedriver
root      1864  0.0  0.8 420820  8656 ?        Sl   Sep03   0:03 chromedriver --port=54253
root      1986  0.0  0.8 420788  8532 ?        Sl   Sep03   0:04 chromedriver --port=50076
root      2106  0.0  0.8 421844  8492 ?        Sl   Sep03   0:08 chromedriver --port=60481
root      2224  0.0  0.8 420788  8564 ?        Sl   Sep03   0:04 chromedriver --port=46809
root      2365 66.1  1.3 426452 13948 ?        Sl   Sep03 3808:20 chromedriver --port=42449
root      2505  0.0  0.8 419796  8592 ?        Sl   Sep03   0:08 chromedriver --port=58371
root      4305  0.0  1.0 420788 11060 ?        Sl   Sep04   0:06 chromedriver --port=48238
```
把他们都kill掉，然后你会发现，还是启动不了，继续看ps -aux | grep webdriver：

```
ps -aux | grep webdriver
root      1872  0.0  3.1 1297316 32364 ?       Sl   Sep03   0:40 /usr/lib64/chromium-browser/chromium-browser --disable-background-networking --disable-client-side-phishing-detection --disable-default-apps --disable-gpu --disable-hang-monitor --disable-images --disable-popup-blocking --disable-prompt-on-repost --disable-sync --disable-web-resources --enable-automation --enable-logging --force-fieldtrials=SiteIsolationExtensions/Control --headless --ignore-certificate-errors --load-extension=/tmp/.org.chromium.Chromium.mjqXiO/internal --log-level=0 --metrics-recording-only --no-first-run --no-sandbox --password-store=basic --remote-debugging-port=12212 --test-type=webdriver --use-mock-keychain --user-agent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36" --user-data-dir=/tmp/.org.chromium.Chromium.80hqgb data:,
root      1913  0.0  4.4 1715216 44936 ?       Sl   Sep03   0:50 /usr/lib64/chromium-browser/chromium-browser --type=renderer --enable-automation --enable-logging --log-level=0 --no-sandbox --test-type=webdriver --use-gl=swiftshader-webgl --disable-gpu-compositing --service-pipe-token=D53136B4A76B7466381D9229384AE7C8 --lang=en-US --headless --user-agent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36" --num-raster-threads=1 --service-request-channel-token=D53136B4A76B7466381D9229384AE7C8 --renderer-client-id=4 --shared-files=v8_natives_data:100,v8_snapshot_data:101
root      1994  0.0  3.1 1297348 31960 ?       Sl   Sep03   0:36 /usr/lib64/chromium-browser/chromium-browser --disable-background-networking --disable-client-side-phishing-detection --disable-default-apps --disable-gpu --disable-hang-monitor --disable-images --disable-popup-blocking --disable-prompt-on-repost --disable-sync --disable-web-resources --enable-automation --enable-logging --force-fieldtrials=SiteIsolationExtensions/Control --headless --ignore-certificate-errors --load-extension=/tmp/.org.chromium.Chromium.rQODJb/internal --log-level=0 --metrics-recording-only --no-first-run --no-sandbox --password-store=basic --remote-debugging-port=12134 --test-type=webdriver --use-mock-keychain --user-agent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36" --user-data-dir=/tmp/.org.chromium.Chromium.LxceXg data:,
root      2034  0.0  4.3 1714712 44564 ?       Sl   Sep03   0:39 /usr/lib64/chromium-browser/chromium-browser --type=renderer --enable-automation --enable-logging --log-level=0 --no-sandbox --test-type=webdriver --use-gl=swiftshader-webgl --disable-gpu-compositing --service-pipe-token=9CFBD23CE4B01D39B07357EAC8FF18E3 --lang=en-US --headless --user-agent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36" --num-raster-threads=1 --service-request-channel-token=9CFBD23CE4B01D39B07357EAC8FF18E3 --renderer-client-id=4 --shared-files=v8_natives_data:100,v8_snapshot_data:101
```
只要把之前启动的webdriver都清理完，就能够启动了。
当然，最简单的方法是重启。。。

https://sites.google.com/a/chromium.org/chromedriver/downloads