For uninstall failures, you will need to do a couple of things. Depending on where the uninstall failed, you may have to manually do a killall java on all the nodes to kill any missed processes. If you want to start with a complete clean install, you should also delete the hadoop dir in the mount points you selected during the previous install so that the new fresh install does not face errors when it tries to re-format hdfs.
After that, simply, uinstall and re-install ambari rpm and that should allow you to re-create a fresh cluster. -- Hitesh On Aug 11, 2012, at 2:34 AM, xu peng wrote: > Hi Hitesh : > > Thanks a lot for your reply. > > I solved this problem , it is silly mistake. Someone has changed the > owner of "/" dir , and according to the errorlog , pdsh need root to > proceed. > > After changing the owner of "/" to root , problem solved. Thank you > again for you reply. > > I have another question. I had a uninstall failure , and there is no > button on the website for me to rollback and i don't know what to do > about that. What should i do now to reinstall hadoop ? > > Thanks > > On Fri, Aug 10, 2012 at 10:55 PM, Hitesh Shah <[email protected]> wrote: >> Hi >> >> Currently, the ambari installer requires everything to be run as root. It >> does not detect that the user is not root and use sudo either on the master >> or on the agent nodes. >> Furthermore, it seems like it is failing when trying to use pdsh to make >> remote calls to the host list that you passed in due to the errors mentioned >> in your script. This could be due to how it was installed but I am not sure. >> >> Could you switch to become root and run any simple command on all hosts >> using pdsh? If you want to reference exactly how ambari uses pdsh, you can >> look into /usr/share/hmc/php/frontend/commandUtils.php >> >> thanks >> -- Hitesh >> >> On Aug 9, 2012, at 9:04 PM, xu peng wrote: >> >>> According to the error log , is there something wrong with my account ? >>> >>> I installed all the dependency module and ambari with the user >>> "ambari" instead of root. I added user "ambari" to /etc/sudofilers >>> with no passwd. >>> >>> On Fri, Aug 10, 2012 at 11:49 AM, xu peng <[email protected]> wrote: >>>> There is no 100.log.file in /var/log/hmc dir, but only 55.log file (55 >>>> is the biggest version num). >>>> >>>> The content of 55.log is : >>>> pdsh@vbaby1: module path "/usr/lib64/pdsh" insecure. >>>> pdsh@vbaby1: "/": Owner not root, current uid, or pdsh executable owner >>>> pdsh@vbaby1: Couldn't load any pdsh modules >>>> >>>> Thanks ~ >>>> >>>> >>>> On Fri, Aug 10, 2012 at 11:36 AM, Hitesh Shah <[email protected]> >>>> wrote: >>>>> Sorry - my mistake. The last txn mentioned is 100 so please look for the >>>>> 100.log file. >>>>> >>>>> -- Hitesh >>>>> >>>>> >>>>> On Aug 9, 2012, at 8:34 PM, Hitesh Shah wrote: >>>>> >>>>>> Thanks - will take a look and get back to you. >>>>>> >>>>>> Could you also look at /var/log/hmc/hmc.txn.55.log and see if there are >>>>>> any errors in it? >>>>>> >>>>>> -- Hitesh. >>>>>> >>>>>> On Aug 9, 2012, at 8:00 PM, xu peng wrote: >>>>>> >>>>>>> Hi Hitesh : >>>>>>> >>>>>>> Thanks a lot for your replying. I have done all your suggestions in my >>>>>>> ambari server , and the result is as below. >>>>>>> >>>>>>> 1. I can confirm that the hosts.txt file is empty after i failed at >>>>>>> the step finding reachable nodes. >>>>>>> 2. I tried make hostdetails file in win7 and redhat , it both >>>>>>> failed.(Please see the attachment, my hostdetails file) >>>>>>> 3. I removed the logging re-direct and run the .sh script .It seems >>>>>>> like the script works well , it print the hostname in console and >>>>>>> generate a file (content is "0") in the same dir. (Please see the >>>>>>> attachment , the result and my .sh script ) >>>>>>> 4. I attached the hmc.log and error_log too. Hope this helps ~ >>>>>>> >>>>>>> Thanks ~ >>>>>>> Xupeng >>>>>>> >>>>>>> >>>>>>> On Fri, Aug 10, 2012 at 12:24 AM, Hitesh Shah <[email protected]> >>>>>>> wrote: >>>>>>>> Xupeng, can you confirm that the hosts.txt file at >>>>>>>> /var/run/hmc/clusters/EBHadoop/hosts.txt is empty? >>>>>>>> >>>>>>>> Also, can you ensure that the hostdetails file that you upload does >>>>>>>> not have any special characters that may be creating problems for the >>>>>>>> parsing layer? >>>>>>>> >>>>>>>> In the same dir, there should be an ssh.sh script. Can you create a >>>>>>>> copy of it, edit to remove the logging re-directs to files and run the >>>>>>>> script manually from command-line ( it takes in a hostname as the >>>>>>>> argument ) ? The output of that should show you as to what is going >>>>>>>> wrong. >>>>>>>> >>>>>>>> Also, please look at /var/log/hmc/hmc.log and httpd/error_log to see >>>>>>>> if there are any errors being logged which may shed more light on the >>>>>>>> issue. >>>>>>>> >>>>>>>> thanks >>>>>>>> -- Hitesh >>>>>>>> >>>>>>>> >>>>>>>> On Aug 9, 2012, at 9:11 AM, Artem Ervits wrote: >>>>>>>> >>>>>>>>> Which file are you supplying in the step? Hostdetail.txt or hosts? >>>>>>>>> >>>>>>>>> From: xupeng.bupt [mailto:[email protected]] >>>>>>>>> Sent: Thursday, August 09, 2012 11:33 AM >>>>>>>>> To: ambari-user >>>>>>>>> Subject: Re: RE: Problem when setting up hadoop cluster step 2 >>>>>>>>> >>>>>>>>> Thank you for your replying ~ >>>>>>>>> >>>>>>>>> >>>>>>>>> I made only one hostdetail.txt file which contains the names of all >>>>>>>>> servers. And i submit this file on the website , but i still have >>>>>>>>> the same problem. I failed at the step of finding reachable nodes. >>>>>>>>> >>>>>>>>> The error log is : " >>>>>>>>> [ERROR][sequentialScriptExecutor][sequentialScriptRunner.php:272][]: >>>>>>>>> Encountered total failure in transaction 100 while running cmd: >>>>>>>>> /usr/bin/php ./addNodes/findSshableNodes.php with args: EBHadoop root >>>>>>>>> 35 100 36 /var/run/hmc/clusters/EBHadoop/hosts.txt >>>>>>>>> " >>>>>>>>> >>>>>>>>> And my hostdetail.txt file is :" >>>>>>>>> vbaby2.cloud.eb >>>>>>>>> vbaby3.cloud.eb >>>>>>>>> vbaby4.cloud.eb >>>>>>>>> vbaby5.cloud.eb >>>>>>>>> vbaby6.cloud.eb >>>>>>>>> " >>>>>>>>> Thank you very much ~ >>>>>>>>> >>>>>>>>> 2012-08-09 >>>>>>>>> xupeng.bupt >>>>>>>>> 发件人： Artem Ervits >>>>>>>>> 发送时间： 2012-08-09 22:16:53 >>>>>>>>> 收件人： [email protected] >>>>>>>>> 抄送： >>>>>>>>> 主题： RE: Problem when setting up hadoop cluster step 2 >>>>>>>>> the installer requires a hosts file which I believe you called >>>>>>>>> hostdetail. Make sure it's the same file. You also mention a >>>>>>>>> hosts.txt and host.txt. You only need one file with the names of all >>>>>>>>> servers. >>>>>>>>> -----Original Message----- >>>>>>>>> From: xu peng [mailto:[email protected]] >>>>>>>>> Sent: Thursday, August 09, 2012 2:02 AM >>>>>>>>> To: [email protected] >>>>>>>>> Subject: Problem when setting up hadoop cluster step 2 >>>>>>>>> Hi everyone : >>>>>>>>> I am trying to use ambari to set up a hadoop cluster , but i >>>>>>>>> encounter a problem on step 2. I already set up the password-less >>>>>>>>> ssh, and i creat a hostdetail.txt file. >>>>>>>>> The problem is that i found the file >>>>>>>>> "/var/run/hmc/clusters/EBHadoop/hosts.txt" is empty , no matter how >>>>>>>>> many times i submit the host.txt file on the website , and i really >>>>>>>>> don't know why. >>>>>>>>> { >>>>>>>>> Here is the log file : [2012:08:09 >>>>>>>>> 05:17:56][ERROR][sequentialScriptExecutor][sequentialScriptRunner.php:272][]: >>>>>>>>> Encountered total failure in transaction 100 while running cmd: >>>>>>>>> /usr/bin/php ./addNodes/findSshableNodes.php with args: EBHadoop root >>>>>>>>> 35 100 36 /var/run/hmc/clusters/EBHadoop/hosts.txt >>>>>>>>> and my host.txt is like this(vbaby1.cloud.eb is the master node) : >>>>>>>>> vbaby2.cloud.eb >>>>>>>>> vbaby3.cloud.eb >>>>>>>>> vbaby4.cloud.eb >>>>>>>>> vbaby5.cloud.eb >>>>>>>>> vbaby6.cloud.eb >>>>>>>>> } >>>>>>>>> Can anyone help me and tell me what i am doing wrong ? >>>>>>>>> Thank you very much ~! >>>>>>>>> This electronic message is intended to be for the use only of the >>>>>>>>> named recipient, and may contain information that is confidential or >>>>>>>>> privileged. If you are not the intended recipient, you are hereby >>>>>>>>> notified that any disclosure, copying, distribution or use of the >>>>>>>>> contents of this message is strictly prohibited. If you have received >>>>>>>>> this message in error or are not the named recipient, please notify >>>>>>>>> us immediately by contacting the sender at the electronic mail >>>>>>>>> address noted above, and delete and destroy all copies of this >>>>>>>>> message. Thank you. >>>>>>>>> -------------------- >>>>>>>>> This electronic message is intended to be for the use only of the >>>>>>>>> named recipient, and may contain information that is confidential or >>>>>>>>> privileged. If you are not the intended recipient, you are hereby >>>>>>>>> notified that any disclosure, copying, distribution or use of the >>>>>>>>> contents of this message is strictly prohibited. If you have >>>>>>>>> received this message in error or are not the named recipient, please >>>>>>>>> notify us immediately by contacting the sender at the electronic mail >>>>>>>>> address noted above, and delete and destroy all copies of this >>>>>>>>> message. Thank you. >>>>>>>>> -------------------- >>>>>>>>> This electronic message is intended to be for the use only of the >>>>>>>>> named recipient, and may contain information that is confidential or >>>>>>>>> privileged. If you are not the intended recipient, you are hereby >>>>>>>>> notified that any disclosure, copying, distribution or use of the >>>>>>>>> contents of this message is strictly prohibited. If you have >>>>>>>>> received this message in error or are not the named recipient, please >>>>>>>>> notify us immediately by contacting the sender at the electronic mail >>>>>>>>> address noted above, and delete and destroy all copies of this >>>>>>>>> message. Thank you. >>>>>>>>> -------------------- >>>>>>>>> >>>>>>>>> This electronic message is intended to be for the use only of the >>>>>>>>> named recipient, and may contain information that is confidential or >>>>>>>>> privileged. If you are not the intended recipient, you are hereby >>>>>>>>> notified that any disclosure, copying, distribution or use of the >>>>>>>>> contents of this message is strictly prohibited. If you have >>>>>>>>> received this message in error or are not the named recipient, please >>>>>>>>> notify us immediately by contacting the sender at the electronic mail >>>>>>>>> address noted above, and delete and destroy all copies of this >>>>>>>>> message. Thank you. >>>>>>>>> >>>>>>>>> >>>>>>>>> -------------------- >>>>>>>>> >>>>>>>>> This electronic message is intended to be for the use only of the >>>>>>>>> named recipient, and may contain information that is confidential or >>>>>>>>> privileged. If you are not the intended recipient, you are hereby >>>>>>>>> notified that any disclosure, copying, distribution or use of the >>>>>>>>> contents of this message is strictly prohibited. If you have >>>>>>>>> received this message in error or are not the named recipient, please >>>>>>>>> notify us immediately by contacting the sender at the electronic mail >>>>>>>>> address noted above, and delete and destroy all copies of this >>>>>>>>> message. Thank you. >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> <hmcLog.txt><hostdetails.txt><httpdLog.txt><ssh1.sh><ssh1_result.jpg> >>>>>> >>>>> >>
