I'm a student working on a test cluster, consisting of around 25 hosts. We installed using Ambari and have FreeIpa running on a host as a dns and ldap server. The rest are typical Hadoop
infrastructure. Hive was failing and I wondered whether the db connection parameters used during the Ambari installation were incorrect and I tried to find a way to re-run the db connection process. I didn't get anywhere and it was late so I left it, ambari interface working.
Next morning, ambari webUI seems to be down. I thought that maybe the webserver needed restarted so I tried the following:
[akidd#dw ~]$ sudo ambari-server start
Using python /usr/bin/python
Starting ambari-server
ERROR: Exiting with exit code 1.
REASON: Unable to detect a system user for Ambari Server.
- If this is a new setup, then run the "ambari-server setup" command to create the user
- If this is an upgrade of an existing setup, run the "ambari-server upgrade" command.
Refer to the Ambari documentation for more information on setup and upgrade.
Can anyone help me to understand what could have happened?
If I run ambari-server setup will the existing cluster be ok assuming I create everything like for like with how it was originally?
Thanks for your help!
#user3535074 You should try to start it with the user that installed it.
If you do run ambari-server setup as current user, remember to choose No the following options:
Customize user account for ambari-server daemon [y/n] (n)? n
Do you want to change Oracle JDK [y/n] (n)? n
Enter advanced database configuration [y/n] (n)? n
More info on the following post, including how to backup ambari database before running setup again:
https://community.cloudera.com/t5/Support-Questions/Ambari-server-failed-to-start-after-system-reboot-Below-is/td-p/203806
I'm unable to get the latest Sonarqube up and running on Ubuntu 16.04.
Installation was done using the deb provided by http://sonar-pkg.sourceforge.net
After a first cursory glance it seems that the installation routine sets up Sonarqube to run as user "root", whereas Elastisearch - which is mandatory - refuses to be started as "root".
Has anybody been able to set this up properly (i.e. running as a non-root user) and can point me to the respective documentation?
Thanks.
First, navigate to the install folder > ex: /opt/sonarqube-6.7.1/bin/linux-x86-64.
Then open the sonar.sh file in that folder using vim, nano commands etc.
Then uncomment the line which reads "RUN_AS_USER=" which is around line number 48.
change the line to "RUN_AS_USER=sonar"
restart your system, start the sonarqube server. You should be able to run your server.
Trying again & again with all required steps completed but cluster Installation when install selected Parcels, always shows every host with bad health. setup never completed at full.
i am installing cm 5.5 on CentOS 6.7 using virtualbox.
The Error
Host is in bad health cm.feuni.edu
Host is in bad health dn1.feuni.edu
Host is in bad health dn2.feuni.edu
Host is in bad health nn1.feuni.edu
Host is in bad health nn2.feuni.edu
Host is in bad health rm.feuni.edu
above error are shown on step 6 where setup says
The selected parcels are being downloaded and installed on all the hosts in the cluster
in previous step 5 all hosts were completed with heartbeat checks in the end
memory distributions
cm 8GB
all others with 1GB
i could not find proper answer anywhere else. What reason could be for the bad health?
I don't know if it will help you...
For me, after a few days I struggled with it,
I found the log files (at )
It had a comment there is a mismatch of the guid,
so I uninstalled everything from both machines (using the script they give,/usr/share/cmf/uninstall-cloudera-manager.sh , yum remove 'cloudera-manager-*' and deletion of every directory related to cloudera I found...)
and then removed the guid file:
rm /var/lib/cloudera-scm-agent/cm_guid
Afterwards I re-installed everything, and that fixed that issue for me...
I read online that there can be issues with the hostname and things like that, but I guess that if you get to this part of the installation, you already fixed all the domain/FDQN/hosname/hosts issues.
It saddens me there is no real manual/FAQ for this product.. :(
Good luck!
I faced the same problem. This is my solution:
First I edited config.ini
$ nano /etc/cloudera-scm-agent/config.ini
so that the hostname where the same as the command $ hostname returned.
then I restarted the agent and the server of cloudera:
$ service cloudera-scm-agent restart
$ service cloudera-scm-server restart
then in cloudera manager I deleted the cluster and added again. The wizard continued to run normally.
While trying to start Apache using XAMPP, I was receiving - "Attempting to start Apache service..." message in XAMPP UI. No further details were available.
Where can I see the logs (I was running XAMPP as Admin) ?
IF PORT 80 IS NOT THE ISSUE!
Check to see if the port 80 is in use first as this can be an issue.
You can do this by typing "netstat -an" into cmd. The look for 0.0.0.0:80 under Local Address, if you find this is in use then follow the solution from #Karthik. However, I had a similar issue but my port 80 was not in use.
My XAMPP had wrong paths locations, steps to fix this:
1.Find out the Apache version you are using, you can find this by looking in Services (Control panel, Admin Tools, Services) and finding Apache in my case it was listed as Apache2.4
2.Close XAMPP.
3.Run cmd as admin.
4.execute 'sc delete "Apache2.4"' (put your version in place of mine and without the surrounding ' ', but with the " " around Apache).
5.execute 'sc delete "mySQL"', again remove the '' when you type it.
6.reopen XAMPP and try starting Apache
If you are having trouble with FileZill, Mercury, or Tomcat you could try it here too, but I have not tested that myself.
Hope this helps!
I realized it was a port issue since I was running IIS and other web servers in my machine. But I was more interested to see a detailed error message with the port number in the UI.
Seems like it was not logged in the UI or log file (at least in my case), but in the Event viewer (Control panel -> View Event Logs). Under the Even viewer -> Windows Logs -> Application
I could see a permission error something like the below one:
An attempt was made to access a socket in a way forbidden by its access permissions. : AH00072: make_sock: could not bind to address 0.0.0.0:443
To fix this permission issue for SSL port, Please change the below line in httpd-ssl.conf (C:\xampp\apache\conf\extra)
# When we also provide SSL we have to listen to the
standard HTTP port (see above) and to the HTTPS port
Listen xxx
Replace XXX with any valid port number that is open in your machine
If you are having issues with Port 80, then change the httpd.conf file (C:\xampp\apache\conf)
# Change this to Listen on specific IP addresses as shown below to
# prevent Apache from glomming onto all bound IP addresses.
#
#Listen 12.34.56.78:80
Listen 127.0.0.1:8000
I have also summarized other solutions that I came across:
Most often Skype blocks the Apache port. So terminate it and try again.
Find the process id (PID) that is using the Blocked port ( netstat -ano) and kill the corresponding process in Windows Task Manager.
For those who have accidentally (or not) changed one of the .conf files and apache does not run even after trying all the above solutions.
One easy way to track where the issue is located, is to run Apache via command prompt:
(On windows) : open command prompt as admin then navigate inside the bin folder of Apache , next run
httpd in order to run apache
C:\xampp\apache\bin\httpd
For my case it was :
someone had added a virtual host in the specific file that caused the problem . I commented the lines and Apache ran fine.
start xampp (as administrator),
(1) right click C:\xampp\xampp-control.exe, and run as administrator.
(2) unistall service module and then install service module.
(3) now try start the apache and mysql.
Check your DocumentRoot path (in httpd.conf); a typo there can cause this problem.
Had the same issue while updating to PHP7.2
Problem:
First I closed skype and then checked whether port 80 is not an issue. How you can check that? See #AlexT comment above.
In my case, port 80 wasn't an issue. So now I had to figure out what was wrong. So I checked Error Logs Control Panel > Even viewer > Windows Logs > Application and found following error against Apache2.4
httpd.exe: Syntax error on line 520 of C:/xampp/apache/conf/httpd.conf: Syntax error on line 18 of C:/xampp/apache/conf/extra/httpd-xampp.conf: Cannot load C:/xampp/php/php7ts.dll into server: The Apache service named is not a valid Win32 application.
Which means I had installed wrong PHP version. Actually I downloaded win64 version while the required version was Win32 for me.
So I downloaded correct version from: Download PHP 7.2.0 extracted it in C:/xampp/php folder, restarted the apache and it worked :)
I had the same issue, executing "setup_xampp.bat" in xampp folder solved my issue.
I had the same problem but it was because I had a previous version of xampp already installed and I tried to install a newer version. I had installed the newer version in another file directory (I had named the file directory xampp2). I solved the problem by uninstalling the newer version, renaming the old one (I renamed it xamppold) and I installed xampp again.
I guess if you haven't installed xampp in another file directory , it should be enough to reinstall xampp. If you are worried about your files , you always can make a backup before reinstalling xampp.
I solved the problem after watching the xampp activity log (the list of the bottom) and realizing xampp was trying to open the custom file path but I had another route path. If the first option didn't work, at least you can scroll up in the activity log and see what's error you get while starting as admin and trying to re install the Apache module or trying to start the module.
You may wander why I didn't just simply uninstall the whole thing from the beginning , and the answer would be because I had to tweak a couple of things in xampp for some different projects (from changing the ports , to add .dll to run mongo.db in Apache), and I was just too lazy to re-do everything again :b
I hope my answer can be helpful for anyone since this is my first time writing in stackoverflow :)
Cheers
In my case, with the same problem and Xampp window, I had copied \apache\conf\extra\httpd-vhosts.conf entries from an old Xampp version to a newly installed one so I could continue to open local projects in browsers. One of the vhosts paths was wrong. After deleting that entry Apache started without problem.
The reference by #Karthik to "in the Event viewer (Control panel -> View Event Logs" saved me time. It's all too easy to presume Xampp logs will point to the problem. It doesn't.
Also check if your xampp is installed in the main directory like C or D or E and not in or within a folder of that directory? i.e. ( "D:/Xampp" or is it "D:/something/Xampp") if its not in the main path of the directory, it will show this error.
copy your xampp directory from "D:\Something\Xampp" to "D:"
So it becomes like this "D:\Xampp"
and the issue will be resolved.
Starting Xampp as a console application (simply by doubleclicking xampp_start.exe in the Xampp root folder) was the only thing that worked for me on Windows 10 (no Skype, no Word Wide Web Publishing Service). WampServer and UwAmp also didn't work.
I had a hard-coded IP in httpd.conf and my local IP had changed which was causing my issue, changed IP over and all worked again
My scenario was different after I tested all the possible options. If you have changed the ports and still get the same problem, well here's something you can try out. This was done in Windows 7.
Step 1: Confirm the cause of the error by going to Control Panel -> System and Security -> Administrative Tools -> Event Viewer -> Windows Logs -> Application -> Error. Mine said "The Apache service named reported the following error:
httpd.exe: Syntax error on line 424 of C:/xampp/apache/conf/httpd.conf: Cannot load c:\xampp\php\php5apache.dll into server: The specified module could not be found." So I needed to change \php5apache.dll to the version of my php and apache version installed which was php7apache2_4.dll
Step 2: To get the correct name for your .dll php and apache file, got to C:\xampp\php. You will see something like php7apache2_4.dll with other files in the folder.
Step 3: Go to C:/xampp/apache/conf/httpd.conf and edit the configuration file and change "c:\xampp\php\php5apache.dll" to "c:\xampp\php\php7apache2_4.dll" in my case. Make sure you open the file as administrator save changes made.
Step 4: Run the xampp server and everything should work fine. Do not forget to shut down the xampp server before doing the changes to the apache configuration file.
Hope this helps. Cheers! :)
Try to install x86 version of XAMPP. The default XAMPP version on their website is x64 (maybe because I'm using x64 Windows 7).
download link here
I had this issue when I installed under Program Files, which they do not recommend due to write issues. This might only be a problem if you are not logged in as an admin and use a password to install. I just uninstalled and installed in a directory that did not need admin privileges.
Make sure Apache didn't get Disabled in Services (Control panel, Admin Tools, Services). If it's Disabled then Set it to Manual and it should run. That was my case, I found Apache Disabled.
Solution for my particular scenario (It had been working a couple days before getting borked):
Port 80 was not the problem, but something I had done while messing around with Services and Startup.
Type msconfig on Windows' Start menu
Click System Configuration
Screenshot for System Configuration
In the Services tab, search for Apache24 (Click "Hide all Microsoft services" in the checkbox at the bottom of the window to make it easier to find)
If its checkbox isn't checked, check it
If it was already checked, then this guide isn't going to help. However if it is:
Click OK, your PC will have to restart
Try once again! In my case Apache was already running once I opened Xampp
I had the same issue.Just click on services button.Then find apache and right cick > properties > set startup type as Automatic/ Manual. Now close apache and try again.It will work!
For me it wasn't a port or service issue; I had to re-run the XAMPP setup script. Although this didn't directly fix the issue for me, the script was much more verbose than the XAMPP log, pointing me in the right direction to actually solve the problem.
From the XAMPP GUI, click on Shell, type set, press Tab to autocomplete to the setup_xampp.bat file, and then press Enter to run it.
In my case I got the following output:
[ERROR]: Test php.exe failed !!!
[ERROR]: Perhaps the Microsoft C++ 2008 runtime package is not installed.
[ERROR]: Please try to install the MS VC++ 2008 Redistributable Package from the Mircrosoft page first
[ERROR]: http://www.microsoft.com/en-us/download/details.aspx?id=5582
This particular error is misleading. Although it specifies the Visual C++ 2008 Redistributable Package, PHP 7.4.x requires the Visual C++ 2019 Redistributable Package.
After installing that and following the prompt to restart, sure enough I'm now able to start Apache as normal.
make sure no space in front of the port number if you ever edited it.
From Xampp control panel, click on config (next to Apache), then choose Apache(httpd.config), search for listen 80 and change the port to another port.
If nothing works with you, I would suggest you download MAMP and use it instead.
It does the same thing, if not better.
Comment this lines from httpd.conf:
# Virtual hosts
#Include etc/extra/httpd-vhosts.conf
In the case you're using them it may solve.
when i run xampp control panel normal:
I had been run
I can’t start apache
So, I will run it with administrator:
I can run apache
I need to get MPICH2 working for my college project. But it appears I won't implement anything until I manage how to start MPICH2. For now I only try to run anything on my computer, nothing more. What I do:
I install the MPICH2 (from mpich.org/downloads, from the bottom of the site - the x86_64 Windows version) on my 64bit Windows 7 (I also tried the same with my 64bit Windows 8). I start the installer from a command line (run as an administrator), install MPICH2 for everybody (although my acc is the only one). After successful installation I run the wmpiregister.exe, where I type Danioss (it's the name of my account) and the password for this account. I click register, everything seems to be fine so far. Then I run wmpiconfig.exe, I don't change nor click anything and there is this error:
'g-pc: MPICH2 not installed or unable to query the host'
I can see on the left the table with my host name (g-pc) and the version of MPICH - 1.4.1p1. So it sees it is installed here but cannot query the host. I have no idea what that means.
Of course I tried to execute any compiled program but after running wmpiexec.exe, choosing the file and clicking Execute - I get
'Credentials for Danioss rejected connecting to g-PC
Aborting: Unable to connect to g-PC'
I tried running every .exe as an administrator, didn't help. I also installed and reinstalled the whole MPICH2 tens of times (literally - tens) trying different configurations. I also tried to install the 32bit version but that made no progress. I really have no idea what the problem is.
Please, help me!
Greetings,
Daniel
Try not specifying username after running wmpiexec -register. Just password for your current user. That worked well for me. Source: https://trac.mpich.org/projects/mpich/ticket/1151
First: crate a windows user password of your windows user acount
Second: go to installdir deform (C:\Program Files\SFTC\DEFORM\v10.2\3D)
Third: execute "wmpiregister.exe" and register user name and password that your windows user name and password
start deform on multiprocessor
good work
You need to run wmpiregister.exe which is in bin folder, to register your Windows user.
Register using mpiexec -register with ".\" before the username, in your case: .\Danioss.