解决helm部署报错Error: UPGRADE FAILED: another operation (install/upgrade/rollback) is in progress

在使用helm install 或者helm upgrade的时候，如果出现了异常中断操作， 可能会导致如下报错

Error: UPGRADE FAILED: another operation (install/upgrade/rollback) is in progress      

那么问题来了，如何解决这个问题呢？

参考github上的issues：

https://github.com/helm/helm/issues/8987

，我们可以使用以下操作

1.输入helm history 命令检查当前状态， 如下

$ helm history -n lizhewnei lizhewnei-common
REVISION    UPDATED                     STATUS          CHART                   APP VERSION DESCRIPTION
331         Tue Feb 23 23:11:07 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
332         Wed Feb 24 08:11:08 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
333         Wed Feb 24 15:11:13 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
334         Wed Feb 24 23:11:09 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
335         Thu Feb 25 08:11:09 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
336         Thu Feb 25 15:11:08 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
337         Thu Feb 25 23:11:06 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
338         Fri Feb 26 08:11:13 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
339         Fri Feb 26 09:49:37 2021    deployed        lizhewnei-common-0.1.0  1.16.0      Upgrade complete
340         Fri Feb 26 10:37:53 2021    pending-upgrade lizhewnei-common-0.1.0  1.16.0      Preparing upgrade      

2.根据上述状态，我们会发现，最近的一次340部署结果是pending-upgrade 所以阻塞了我们的继续部署

3.我们使用helm rollback命令回退一个版本到339版本

$ helm rollback -n lizhewnei lizhewnei-common 339
Rollback was a success! Happy Helming!      

4.回退之后，再检查一次当前状态，确认状态信息是回退到339版本

$ helm history -n lizhewnei lizhewnei-common
REVISION    UPDATED                     STATUS          CHART                   APP VERSION DESCRIPTION
332         Wed Feb 24 08:11:08 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
333         Wed Feb 24 15:11:13 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
334         Wed Feb 24 23:11:09 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
335         Thu Feb 25 08:11:09 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
336         Thu Feb 25 15:11:08 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
337         Thu Feb 25 23:11:06 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
338         Fri Feb 26 08:11:13 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
339         Fri Feb 26 09:49:37 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
340         Fri Feb 26 10:37:53 2021    pending-upgrade lizhewnei-common-0.1.0  1.16.0      Preparing upgrade
341         Fri Feb 26 11:00:23 2021    deployed        lizhewnei-common-0.1.0  1.16.0      Rollback to 339      

5.这个时候，我们再去使用helm upgrade命令，就可以正常的升级了，升级之后，我们通过helm history 也可以检查到升级成功，

$ helm history -n lizhewnei lizhewnei-common
REVISION    UPDATED                     STATUS          CHART                   APP VERSION DESCRIPTION
333         Wed Feb 24 15:11:13 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
334         Wed Feb 24 23:11:09 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
335         Thu Feb 25 08:11:09 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
336         Thu Feb 25 15:11:08 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
337         Thu Feb 25 23:11:06 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
338         Fri Feb 26 08:11:13 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
339         Fri Feb 26 09:49:37 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Upgrade complete
340         Fri Feb 26 10:37:53 2021    pending-upgrade lizhewnei-common-0.1.0  1.16.0      Preparing upgrade
341         Fri Feb 26 11:00:23 2021    superseded      lizhewnei-common-0.1.0  1.16.0      Rollback to 339
342         Fri Feb 26 11:01:27 2021    deployed        lizhewnei-common-0.1.0  1.16.0      Upgrade complete