Difference between revisions of "User:Mziaei"

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Hi Merdad
 
 
It's really bad. Can you check it out please?
 
 
Thanks,
 
 
Andrew
 
 
On 12/09/16 12:00, Andrew Smith wrote:
 
> Hi Mehrdad
 
>
 
> I think the DNS might still be trying to load balance, people are
 
> unable to connect intermittently (I can see it too).
 
>
 
> Andrew
 
>
 
> On 12/09/16 07:40, Mehrdad Ziaei wrote:
 
>> Hi,
 
>>
 
>>
 
>>
 
>> When this wiki was running on Zenit, it was hosted by 4 web servers,
 
>> so I don’t think that by itself is an issue.
 
>>
 
>>
 
>>
 
>> However, I stopped one of the webservers just to see if the error
 
>> happens again or not.
 
>>
 
>> Also on the wiki on Zenit we had cache enabled as well, but is not in
 
>> the new one, could you please look into this as well.
 
>>
 
>>
 
>>
 
>> I will look into the database server as well.
 
>>
 
>>
 
>>
 
>> Thanks,
 
>>
 
>> Mehrdad
 
>>
 
>>
 
>>
 
>> *From:*Andrew Smith
 
>> *Sent:* September 11, 2016 9:11 PM
 
>> *To:* Mehrdad Ziaei <mehrdad.ziaei@senecacollege.ca>
 
>> *Subject:* Re: Cdot wiki database errors
 
>>
 
>>
 
>>
 
>> Hi Mehrdad
 
>>
 
>> I am gettng reports from other people who are getting the same error.
 
>>
 
>> Andrew
 
>>
 
>> On 10/09/16 15:23, Andrew Smith wrote:
 
>>
 
>>    Hi Mehrdad
 
>>
 
>>    I just had an idea. Could it be related to the fact that there are
 
>>    two web servers? Maybe some weird race condition happens and they
 
>>    end up blocking each other?
 
>>
 
>>    Is it difficult to turn off the second one for a few days to see
 
>>    what happens?
 
>>
 
>>    Cheers,
 
>>
 
>>    Andrew
 
>>
 
>>    On 2016-09-10 02:54 PM, Andrew Smith wrote:
 
>>
 
>>        Hi Mehrdad
 
>>
 
>>        Well that didn't take long. Here is another, when I try to
 
>>        create a new account:
 
>>
 
>>        A database query error has occurred. This may indicate a bug in
 
>>        the software.
 
>>
 
>>          * Query:
 
>>
 
>>        INSERT IGNORE INTO `mw_user`
 
>> (user_id,user_name,user_password,user_newpassword,user_email,user_email_authenticated,user_real_name,user_token,user_registration,user_editcount,user_touched)
 
>>        VALUES (NULL,'Asmith15','','','asmith15@myseneca.ca
 
>> <mailto:asmith15@myseneca.ca>',NULL,'','46e05f814d6feba8f3933b7b2759b
 
>> 67f','20160910184921','0','20160910184926')
 
>>
 
>>          * Function: |User::addToDatabase|
 
>>          * Error: 1205 Lock wait timeout exceeded; try restarting
 
>>            transaction (db1.sparc.senecacollege.ca)
 
>>
 
>>        On 2016-09-10 02:42 PM, Andrew Smith wrote:
 
>>
 
>>            Hi Mehrdad
 
>>
 
>>            The test query now succeeds when I run it in a console. It
 
>>            was failing yesterday just before I sent the email.
 
>>
 
>>            At the same time I was not able to change my password via
 
>>            the wiki interface, because of the same error.
 
>>
 
>>            Perhaps it had something to do with the semester startup
 
>>            load on the server. Let's leave this issue open for a few
 
>>            days to make sure it doesn't reoccur.
 
>>
 
>>            If it does - is there some information that I could collect
 
>>            to help debug the problem?
 
>>
 
>>            Yours,
 
>>
 
>>            Andrew
 
>>
 
>>            On 2016-09-10 12:45 PM, Mehrdad Ziaei wrote:
 
>>
 
>>                Hi,
 
>>
 
>>
 
>>
 
>>                I logged it and edited a page and also change my
 
>>                preferences and didn't
 
>>                get the error.
 
>>
 
>>
 
>>
 
>>                Do you get error on specific action?
 
>>
 
>>                Does it happen during specific time of day or any random
 
>>                time during the
 
>>                day?
 
>>
 
>>
 
>>
 
>>                Mehrdad
 
>>
 
>> ---------------------------------------------------------------------
 
>> ---
 
>>
 
>>                *From:* Andrew Smith
 
>>                *Sent:* September 9, 2016 8:22:21 PM
 
>>                *To:* Seneca Service Desk
 
>>                *Cc:* Mehrdad Ziaei
 
>>                *Subject:* Re: Cdot wiki database errors
 
>>
 
>>                Forgot to CC the service desk.
 
>>
 
>>                On 09/09/16 20:20, Andrew Smith wrote:
 
>>
 
>>                    Hi Mehrdad
 
>>
 
>>                    I'm getting timeouts on the wiki that all seem to be
 
>>                    related to the
 
>>                    user table(s). I got one query in debug logs and
 
>>                    tried it on the
 
>>                    command-line, here's the result:
 
>>
 
>>                    MySQL [cdotwiki_db]> UPDATE `mw_user` SET
 
>>                    user_newpassword =
 
>> ':pbkdf2:sha256:10000:128:xm5XL0Oc/fEdSdXOJg4hjw==:B5bIhG14qHu5lCDQxI
 
>> l+q8INMY4St5SnW8BjAr8V+Cgz0Wst1vzcu0mYfhXKfuH12oaaRa4FTcHkpN3l/oAsJ1u
 
>> 1Zx90n9H5JkFHiM1A4bSPmq+io3TWBXEotxTAbz0Lm6XAju/4kfaBJ1JKMzA+2KJNVf37
 
>> QmOMa8pqtThIcPc=',user_newpass_time
 
>>
 
>>                    = '20160910001118' WHERE user_name = 'Andrew';
 
>>                    ERROR 1205 (HY000): Lock wait timeout exceeded; try
 
>>                    restarting
 
>>                    transaction
 
>>
 
>>                    Which is the same error I'm getting on the wiki.
 
>>
 
>>                    I get the same with a simpler, test query:
 
>>
 
>>                    MySQL [cdotwiki_db]> UPDATE `mw_user` SET
 
>>                    user_editcount = '1710'
 
>>                    WHERE user_name = 'Andrew';
 
>>                    ERROR 1205 (HY000): Lock wait timeout exceeded; try
 
>>                    restarting
 
>>                    transaction
 
>>
 
>>                    I can only think that maybe SELinux is causing it.
 
>>                    Maybe you can see
 
>>                    something in other logs (there's nothing in the web
 
>>                    server logs) If
 
>>                    you can't think of a better reason - can you please
 
>>                    disable SELinux?
 
>>
 
>>                    Thanks,
 
>>
 
>>                    Andrew
 
>>
 
>>
 
>>
 
>>
 
>>
 
>>
 
>>
 
>>
 
>>
 

Revision as of 14:05, 12 September 2016

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