Sean,
On 8/9/2016 1:55 PM, Sean Son wrote: > On Mon, Aug 8, 2016 at 11:31 AM, Mark Eggers > <its_toas...@yahoo.com.invalid> wrote: > >> Sean, >> >> On 8/8/2016 7:10 AM, Sean Son wrote: >>> On Fri, Aug 5, 2016 at 5:34 PM, Mark Eggers >> <its_toas...@yahoo.com.invalid> >>> wrote: >>> >>>> On 8/5/2016 2:19 PM, Sean Son wrote: >>>>> Hello! >>>>> >>>>> I am currently running Tomcat 8 on RHEL 7.2 with one web >>>>> application called AppVet (A mobile Application Vetting >>>>> program). The application works well but when I tried to use >>>>> a script to allow tomcat to start up at boot, the webapp >>>>> gives an authentication error. I saw the following error in >>>>> the logs for appvet: >>>>> >>>>> >>>>> [ERROR] Could not connect to database: >>>>> com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: >>>>> Communications link failure >>>>> >>>>> The last packet sent successfully to the server was 0 >>>>> milliseconds ago. The driver has not received any packets >>>>> from the server. Make sure your MySQL password in your >>>>> AppVetProperties.xml file is correct >>>>> >>>>> >>>>> I know for a fact that the MySQL password is correct in that >>>>> XML file. I double checked it already. Any ideas on how I >>>>> should fix this error? >>>>> >>>>> This is the script that I am using for startup/shutdown of >>>>> Tomcat8 on boot: >>>>> >>>>> http://pastebin.com/mrvfDtTD >>>>> >>>>> Thanks! >>>>> >>>>> Sean >>>>> >>>> >>>> It appears that your Tomcat process is running as root. Do not >>>> do this. >>>> >>>> Is your MySQL server up and running before Tomcat is started? >>>> >>>> . . . just my two cents /mde/ >>>> >>>> >>> Hello thank you for your response >>> >>> I created a user account for Tomcat, I will set the script to use >>> that account instead of the root account. Question though, does >>> this account need a password? >> >> Yes, especially since you'll be running a service. >> >> Note that if you're running Tomcat on a privileged port (less than >> 1024), a non-root account will not be able to bind to this port. >> >> You have three choices. >> >> 1. iptables >> >> route port 80 to port 8080 (Tomcat default) internally. Take a look >> at the iptables documentation. >> >> 2. jsvc >> >> jsvc from the Apache Commons Daemon project allows you to run a >> service such as Tomcat more easily. I don't remember if there is an >> RPM for RHEL or not (possible in EPEL). It's configuration and >> startup script are different, but the documentation is a good start >> (there are Tomcat examples). >> >> https://commons.apache.org/proper/commons-daemon/jsvc.html >> >> 3. Apache HTTPD front end with mod_proxy_ajp or mod_jk >> >> I'd do this if you need Apache HTTPD for other web applications (a >> PHP application, perhaps). There is good documentation available on >> the Tomcat web site, as well as a ton of discussion on the mailing >> list to get this running. >> >> If you don't feel like building software, I'd recommend >> mod_proxy_ajp. I find mod_jk more flexible and a little easier to >> use (opinions on easy of use vary), but you'd have to build mod_jk >> from source. It's easy to do, but some people find that a little >> more challenging. >> >>> >>> Also, I cant tell if the MySQL server is up and running prior to >>> Tomcat being started. I know that mysqld is enabled to start at >>> boot, but I dont know if Tomcat starts prior to MySQL. How would >>> I figure that out? >>> >> >> I thought REHL 7 uses systemd and not init scripts? >> >> There have been many discussions on the mailing list concerning >> systemd and Tomcat. I think someone has posted appropriate systemd >> scripts. >> >> If not, then look at /etc/rc3.d. Start and stop scripts are >> executed in numerical order. Start scripts start with S, stop >> scripts start with K. >> >> Adjust the numbers in your Tomcat init script (/etc/initinit.d) so >> that the start comes after MySQL (second number in the chkconfig >> line). >> >> You'll have to chkconfig --del and chkconfig --add to have the new >> numbers take effect in /etc/rcx.d. >> >>> >>> Thanks! >>> >> >> . . . just my two cents /mde/ >> >> >> > > hello thank you for your response. > > So i decided to go the SystemD route and I found this article > online: > > https://panovski.me/install-tomcat-8-on-centos-7/ > > I followed the instructions and instead of downloading Tomcat and > installing it in /opt/tomcat, I copied the existing Tomcat > installation, which was in /home/username, into /opt/tomcat and I > gave the entire installation directory, an owner and group of tomcat. > Then I set up the following tomcat.service unit file: > > > [Unit] Description=Apache Tomcat Web Application Container > After=network.target > > [Service] Type=forking PIDFile=/var/run/tomcat.pid > Environment=CATALINA_PID=/var/run/tomcat.pid > Environment=JAVA_HOME=/usr/java/jdk1.8.0_92 > Environment=CATALINA_HOME=/opt/tomcat/apache-tomcat-8.0.35 > Environment=CATALINA_BASE=/opt/tomcat/apache-tomcat-8.0.35 > Environment=CATALINA_OPTS= > > ExecStart=/opt/tomcat/apache-tomcat-8.0.35/bin/jsvc \ > -Dcatalina.home=${CATALINA_HOME} \ -Dcatalina.base=${CATALINA_BASE} > \ -cp > ${CATALINA_HOME}/bin/commons-daemon.jar:${CATALINA_HOME}/bin/bootstrap.jar:${CATALINA_HOME}/bin/tomcat-juli.jar > > \ > -user tomcat \ -java-home ${JAVA_HOME} \ -pidfile /var/run/tomcat.pid > \ -errfile SYSLOG \ -outfile SYSLOG \ $CATALINA_OPTS \ > org.apache.catalina.startup.Bootstrap > > ExecStop=/opt/tomcat/bin/jsvc \ -pidfile /var/run/tomcat.pid \ -stop > \ org.apache.catalina.startup.Bootstrap > > [Install] WantedBy=multi-user.target > > > > I set up JSVC as well just like how the article suggested, but when I > run systemctl start tomcat and I try to browse to https://IP > Address:8443 (I am using SSL on Tomcat), I get the following errors > in the webbrowser: > > http://pastebin.com/8RANM5NF > > Any ideas on what I should do to resolve this issue? > > Thanks! > Looks like a permissions problem: /opt/tomcat/apache-tomcat-8.0.35/work/Catalina/localhost/ROOT/org/apache/jsp/index_jsp.class (Permission denied) What are the permissions and ownership (owner, group) for the files and directories under /opt/tomcat - especially /opt/tomcat/apache-tomcat-8.0.35? . . . just my two cents /mde/
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