[LON-CAPA-admin] Upgrading server hardware

[Stuart Raeburn]

Lars,

When you install the LONCAPA-prerequisites rpm that will install the  
ntp package.

When you run install.pl to prepare a server/VM for LON-CAPA, and  
answer Y to the option: "Set overrides for start-up order of  
services?" that will set ntp to start on boot. (In loncapa_install.log  
you'll find the line: "Runlevel update command run: systemctl enable  
ntpd.service" if you answered Y for that option when running  
install.pl on CentOS 7.

When you run ./UPDATE to install LON-CAPA, one of the post-install  
actions is for Make to parse the ntpcheck.piml script to check whether  
ntp is running. If it is detected that it is not running, the  
following is written to the WARNINGS file:

WARNING: ntp is installed but is not currently running.
Please verify the configuration of ntp in /etc/ntp.conf and  
/etc/ntp/step-tickers
Start ntp by executing
systemctl start ntpd.service

However, apparently Redhat7/CentOS 7/Scientific Linux 7 all need a  
small modification to ntpcheck.piml so that the check operates as  
intended. ntpcheck.piml rev. 1.27 includes the required change.

wget -O ntpcheck.piml  
;http://source.loncapa.org/cgi-bin/cvsweb.cgi/~checkout~/doc/loncapafiles/ntpcheck.piml?rev=1.27;content-type=text%2Fplain'

will retrieve that version (which will be in LON-CAPA 2.11.2).

Regardless of that, LON-CAPA's install.pl script will have set the ntp  
service to start on reboot, if you chose to "Set overrides for  
start-up order of services".


Stuart Raeburn
LON-CAPA Academic Consortium


Quoting Lars <ljensen at tmcc.edu>:

> By the way, does lon-capa keep server time synchronized? Or do I need
> to take care of this?
>
> Thanks,
> Lars.
>
> On Tue, May 17, 2016 at 3:40 PM, Lars <ljensen at tmcc.edu> wrote:
>> Thanks Stuart. You were right on the money. All I had to do was to
>> install the perl-LDAP module, and everything started right up. What is
>> the deal with the mysql/mariadb admin password. Is it ever needed? I
>> have forgotten it and I don't remember ever using it on my old server.
>> And apparently it wasn't needed for loncapa to gain access the
>> database once it was copied over to the new server, because everything
>> on the new system seems normal.
>>
>> Lars.