The fact that you're getting that error means that Apache is up and running. If Apache were down, your web browser would essentially tell you that it can't connect to the server or can't display the page (in the case of IE). This error means that Apache is trying to pass the request on to the Tomcat server and is failing. It may be that Tomcat is down.
I usually verify that they are running by checking for the processes using the ps command. A quick easy way to tell if Apache is up is to look for the httpd process by running the following command at the shell prompt: ps -ef | grep httpd If Apache is running, you should see multiple lines returned similar to this: root 23773 1 0 Jul31 ? 00:00:00 /opt/apache/bin/httpd -k start nobody 6509 23773 0 04:15 ? 00:00:00 /opt/apache/bin/httpd -k start nobody 6510 23773 0 04:15 ? 00:00:00 /opt/apache/bin/httpd -k start nobody 6511 23773 0 04:15 ? 00:00:00 /opt/apache/bin/httpd -k start nobody 6512 23773 0 04:15 ? 00:00:00 /opt/apache/bin/httpd -k start nobody 6513 23773 0 04:15 ? 00:00:00 /opt/apache/bin/httpd -k start user 19396 19247 0 17:18 pts/0 00:00:00 grep httpd Note the line highlighted in red - that's the process running the grep command. Ignore that line. If you see no lines returned (or just one that lists the grep command), then Apache is not running. Tomcat is a little more tricky, because it's a Java process. I check for it by running the following command: ps -ef | grep java You should get back at least one line similar to the following: root 14160 1 0 Jul31 ? 00:02:28 /usr/java/jdk1.5.0_14/bin/java -Djava.awt.headless=true -Dsun.java2d.fontpath=/usr/java/jdk1.5.0_14/jre/lib/fonts -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=/usr/ar/apache-tomcat-5.5.17/conf/logging.properties -Djava.endorsed.dirs=/usr/ar/apache-tomcat-5.5.17/common/endorsed -classpath :/usr/ar/apache-tomcat-5.5.17/bin/bootstrap.jar:/usr/ar/apache-tomcat-5.5.17/bin/commons-logging-api.jar -Dcatalina.base=/usr/ar/apache-tomcat-5.5.17 -Dcatalina.home=/usr/ar/apache-tomcat-5.5.17 -Djava.io.tmpdir=/usr/ar/apache-tomcat-5.5.17/temp org.apache.catalina.startup.Bootstrap start Note the sections highlighted in red. You can tell by looking at the options listed that this is for Tomcat. If you don't see that, then it's not running. Hope that helps a bit. Lyle From: Action Request System discussion list(ARSList) [mailto:arsl...@arslist.org] On Behalf Of Kaye Bernales Sent: Thursday, August 06, 2009 2:44 AM To: arslist@ARSLIST.ORG Subject: How to verify if apache and tomcat are running? ** Hi List, We just finished installing mid-tier 7.5 (Used patch 2). We are trying to load the test page as described in doc. but we got the error 503 Service Temporarily Unavailable. Service Temporarily Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later. Am a newbie on Unix and am wondering how I could verify if APache and Tomcat are running. (And how to restart them if ever). I was able to log in to User Tool and Dev Studio so arserver is running. Remedy Version: 7.5 Patch 2 Platform: UNIX (Solaris) DB: Sybase Thanks! Kaye NOTICE The information contained in this email is confidential. If you are not the intended recipient, you must not disclose or use the information in this email in any way. If you received it in error, please tell us immediately by return email and delete the document. We do not guarantee the integrity of any e-mails or attached files and are not responsible for any changes made to them by any other person. _Platinum Sponsor: rmisoluti...@verizon.net ARSlist: "Where the Answers Are"_ NOTICE: This email message is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org Platinum Sponsor:rmisoluti...@verizon.net ARSlist: "Where the Answers Are"
