I guess things go 'wrong' when trying to setup solr as a service to run at
system boot time. The script, 'solr.in.sh' gets written into the
/etc/default directory. It get the user/group settings of root:tomcat .
Yes, I am logged in via SSH as root. I believe the /var/solr directories
are owned by tomcat:tomcat and the /var/solr/logs directory is empty. The
installation directory at /opt/solr-8.11.1 and the sym link 'solr' are
root:root as well as all the recursive contents. Is this right?
On Tuesday, December 28, 2021 at 12:05:09 PM UTC-5 Chris Clawson wrote:
> I believe this has happened before... Problems begin with step 'f'. The
> following is the output from the bash command:
>
> root@media:/build# bash ./install_solr_service.sh solr-8.11.1.tgz -f
> Extracting solr-8.11.1.tgz to /opt
> Installing symlink /opt/solr -> /opt/solr-8.11.1 ...
> Installing /etc/init.d/solr script ...
> Installing /etc/default/solr.in.sh ...
> Service solr installed.
> Customize Solr startup configuration in /etc/default/solr.in.sh
> Job for solr.service failed because the control process exited with error
> code.
> See "systemctl status solr.service" and "journalctl -xe" for details.
> ● solr.service - LSB: Controls Apache Solr as a Service
> Loaded: loaded (/etc/init.d/solr; generated)
> Active: failed (Result: exit-code) since Tue 2021-12-28 11:00:48 CST;
> 5s ago
> Docs: man:systemd-sysv-generator(8)
> Process: 1474 ExecStart=/etc/init.d/solr start (code=exited,
> status=1/FAILURE)
>
> Dec 28 11:00:48 media systemd[1]: Starting LSB: Controls Apache Solr as a
> Service...
> Dec 28 11:00:48 media su[1476]: Successful su for tomcat by root
> Dec 28 11:00:48 media su[1476]: + ??? root:tomcat
> Dec 28 11:00:48 media su[1476]: pam_unix(su:session): session opened for
> user tomcat by (uid=0)
> Dec 28 11:00:48 media su[1476]: pam_unix(su:session): session closed for
> user tomcat
> Dec 28 11:00:48 media systemd[1]: solr.service: Control process exited,
> code=exited status=1
> Dec 28 11:00:48 media systemd[1]: solr.service: Failed with result
> 'exit-code'.
> Dec 28 11:00:48 media systemd[1]: Failed to start LSB: Controls Apache
> Solr as a Service.
> root@media:/build#
>
> On Tuesday, December 28, 2021 at 9:21:25 AM UTC-5 Mohammad S. AlMutairi
> wrote:
>
>> Hello Chris,
>>
>> Your solr installation is broken so you really really really must remove
>> the old installation and begin a fresh install. All the provided
>> instructions is very simple and easy to follow so just follow it. Regarding
>> step (e) it just another and easier way of changing SOLR_USER=solr to
>> SOLR_USER=tomcat using perl substitution. Don't stop at it or the (g) step
>> just remove the old solr and install solr following the installation steps
>> above but you MUST BE ROOT during the removal or the installing of Solr to
>> overcome any permission issues you might confront.
>>
>> #### Here is what you suppose to see if Solr and dspace cores are done
>> correctly. This is part of it.#####
>> "search":{
>> "name":"search",
>> "instanceDir":"/var/solr/data/search",
>> "dataDir":"/var/solr/data/search/data/",
>> "config":"solrconfig.xml",
>> "schema":"schema.xml",
>> "startTime":"2021-12-28T10:55:06.841Z",
>> "uptime":11865277,
>> "index":{
>> "numDocs":45760,
>> "maxDoc":45760,
>> "deletedDocs":0,
>> "indexHeapUsageBytes":489928,
>> "version":678,
>> "segmentCount":22,
>> "current":true,
>> "hasDeletions":false,
>>
>> "directory":"org.apache.lucene.store.NRTCachingDirectory:NRTCachingDirectory(MMapDirectory@/var/solr/data/search/data/index
>>
>> lockFactory=org.apache.lucene.store.NativeFSLockFactory@12cd8c11;
>> maxCacheMB=48.0 maxMergeSizeMB=4.0)",
>> "segmentsFile":"segments_2z",
>> "segmentsFileSizeInBytes":1947,
>> "userData":{
>> "commitCommandVer":"0",
>> "commitTimeMSec":"1640647856055"},
>> "lastModified":"2021-12-27T23:30:56.055Z",
>> "sizeInBytes":1641346285,
>> "size":"1.53 GB"}},
>> "statistics":{
>> "name":"statistics",
>> "instanceDir":"/var/solr/data/statistics",
>> "dataDir":"/var/solr/data/statistics/data/",
>> "config":"solrconfig.xml",
>> "schema":"schema.xml",
>> "startTime":"2021-12-28T10:55:07.565Z",
>> "uptime":11864565,
>> "index":{
>> "numDocs":78,
>> "maxDoc":78,
>> "deletedDocs":0,
>> "indexHeapUsageBytes":38772,
>> "version":46,
>> "segmentCount":11,
>> "current":false,
>> "hasDeletions":false,
>>
>> "directory":"org.apache.lucene.store.NRTCachingDirectory:NRTCachingDirectory(MMapDirectory@/var/solr/data/statistics/data/index
>>
>> lockFactory=org.apache.lucene.store.NativeFSLockFactory@12cd8c11;
>> maxCacheMB=48.0 maxMergeSizeMB=4.0)",
>>
>> On Tuesday, December 28, 2021 at 4:56:15 PM UTC+3 Chris Clawson wrote:
>>
>>> Thanks for revisiting this! There is detail here which I have never
>>> seen, especially step e) . I will probably attempt a
>>> removal/re-installation of Solr in a few hours. Here is the results of my
>>> status checks, using curl:
>>> root@media:~# curl http://localhost:8983/solr/admin/cores
>>> {
>>> "responseHeader":{
>>> "status":0,
>>> "QTime":70},
>>> "initFailures":{},
>>> "status":{}}
>>> root@media:~# curl http://localhost:8983/solr/admin/cores?action=STATUS
>>> {
>>> "responseHeader":{
>>> "status":0,
>>> "QTime":1},
>>> "initFailures":{},
>>> "status":{}}
>>> root@media:~#
>>>
>>> ... I don't see any DSpace names mentioned in these returns, so I am
>>> guessing there is an issue here.
>>>
>>> On Tuesday, December 28, 2021 at 7:41:15 AM UTC-5 Mohammad S. AlMutairi
>>> wrote:
>>>
>>>> A lot of newcomers who want to try DSpace specially non-technical
>>>> people do face an issue installing Solr for DSpace. The DSpace Solr
>>>> installation portion doesn't cover specific details about any Linux OS so
>>>> to make things easier for the folks who are using Ubuntu I'm posting a
>>>> detailed instructions how Solr should be installed on Ubuntu in a hope
>>>> someone who deserve helping save his time and get Solr up and running in
>>>> no
>>>> time. See Solr installation steps and also the removal of solr if you ever
>>>> need to remove it below. Hope it doesn't fire back as it did not long time
>>>> ago!.
>>>>
>>>> ##################################### Solr Installation
>>>> #####################################
>>>> # set a password for the root user.
>>>> sudo passwd root
>>>>
>>>> # login with root to start solr installation.
>>>> su - root
>>>>
>>>> a) mkdir /build
>>>> b) cd /build
>>>> c) wget https://downloads.apache.org/lucene/solr/8.11.1/solr-8.11.1.tgz
>>>> d) tar xzf solr-8.11.1.tgz solr-8.11.1/bin/install_solr_service.sh
>>>> --strip-components=2
>>>> e) perl -i -pe 's/SOLR_USER=solr/SOLR_USER=tomcat/;'
>>>> /build/install_solr_service.sh
>>>> f) bash ./install_solr_service.sh solr-8.11.1.tgz -f
>>>> g) echo SOLR_OPTS=\"\$SOLR_OPTS
>>>> -Dsolr.allowPaths=/opt/dspace/solr/statistics,/opt/dspace/temp/solr-data\"
>>>> >> /etc/default/solr.in.sh
>>>> h) cp -r /opt/dspace/solr/* /var/solr/data/ # Do this step after
>>>> installing dspace backend (REST API server). You need to change
>>>> /opt/dspace
>>>> to the folder you installed dspace backend into.
>>>> i) chown -R tomcat:tomcat /opt/sol*
>>>> j) chown -R tomcat:tomcat /var/solr/data/
>>>> k) systemctl enable solr
>>>> l) systemctl restart solr
>>>>
>>>> # Run curl as you see it below to test Solr and check the status of
>>>> dspace cores you copied in step (h) above. Dspace cores names you should
>>>> see and see it's data are (authority, oai, search and statistics).
>>>> curl http://localhost:8983/solr/admin/cores
>>>> curl http://localhost:8983/solr/admin/cores?action=STATUS
>>>>
>>>> ################################# End of Solr Installation
>>>> ##################################
>>>>
>>>> ######################### Steps to manually uninstall Solr from Ubuntu
>>>> ######################
>>>> # You need to login with root.
>>>> # login with root to remove old solr installation from your server.
>>>> su - root
>>>>
>>>> 1) systemctl stop solr
>>>> 2) rm -r /var/solr
>>>> 3) rm -r /opt/sol*
>>>> 4) rm /etc/init.d/solr
>>>> 5) deluser --remove-home solr
>>>> 6) deluser --group solr
>>>> 7) update-rc.d -f solr remove
>>>> 8) rm -rf /etc/default/solr.in.sh
>>>> ############################# End of Solr Removal instructions
>>>> ##############################
>>>>
>>>>
>>>> "When the sage points at the moon, the fool looks at the finger"
>>>>
>>>>
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