Re: AW: grab hostname from tomcat manager
Hi, On 04/02/2014 04:54 PM, bjoern.bec...@easycash.de wrote: -Ursprüngliche Nachricht- Von: André Warnier [mailto:a...@ice-sa.com] Gesendet: Mittwoch, 2. April 2014 16:35 An: Tomcat Users List Betreff: Re: grab hostname from tomcat manager bjoern.bec...@easycash.de wrote: Hello, I need to grab the hostname from the tomcat manager somehow. Unfortunately this URL manager/text/serverinfo doesn't contain the hostname. Is there any other smart way to receive the hostname via tomcat manager app? For give me for asking, but how do you access the tomcat manager if you do not know the hostname ? Good question :). But I got a good reason for it. I got two servers with several tomcat instances. In front of them is a loadbalancer with is configured to do a failover. -LB- / \ Server1:8081Server2:8081 I need to write a shell script to sync a specific directory and for each tomcat instance I need to know on which one the loadbalancer is targeting at the moment. If tomcat 8081 on server 1 is down, the loadbalancer will point to server 2 tomcat 8081. I can find it out through the loadbalancer address only. I think the right source of the information you need is the load balancer, if you have access obviously. If not, you have the other indirect methods suggested from the others in this thread, jvmRoute or a page which shows the hostname. Beware to the load balancing method used too, source ip, simple round robin or other. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org Federik - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
AW: AW: grab hostname from tomcat manager
-Ursprüngliche Nachricht- Von: Christopher Schultz [mailto:ch...@christopherschultz.net] Gesendet: Mittwoch, 2. April 2014 22:33 An: Tomcat Users List Betreff: Re: AW: grab hostname from tomcat manager -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Bjorn, On 4/2/14, 10:54 AM, bjoern.bec...@easycash.de wrote: -Ursprüngliche Nachricht- Von: André Warnier [mailto:a...@ice-sa.com] Gesendet: Mittwoch, 2. April 2014 16:35 An: Tomcat Users List Betreff: Re: grab hostname from tomcat manager bjoern.bec...@easycash.de wrote: Hello, I need to grab the hostname from the tomcat manager somehow. Unfortunately this URL manager/text/serverinfo doesn't contain the hostname. Is there any other smart way to receive the hostname via tomcat manager app? For give me for asking, but how do you access the tomcat manager if you do not know the hostname ? Good question :). But I got a good reason for it. I got two servers with several tomcat instances. In front of them is a loadbalancer with is configured to do a failover. -LB- / \ Server1:8081 Server2:8081 I need to write a shell script to sync a specific directory and for each tomcat instance I need to know on which one the loadbalancer is targeting at the moment. How will you check to see which one the lb is targeting? That's the question. If tomcat 8081 on server 1 is down, the loadbalancer will point to server 2 tomcat 8081. I can find it out through the loadbalancer address only. You should probably set a jvmRoute in your Engine in server.xml. That way, you can detect which back-end server you are getting just by looking at the JSESSIONID cookie. That's the answer. When jvmroute is define I easily can receive the jsession id with wget: wget -q -O - --no-cache --keep-session-cookies --no-check-certificate --save-cookies cookies.txt https://loadbalanceraddress:8081/manager --user=user--password=secure 1/dev/null perfect! Thanks a lot! Björn - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTPHPuAAoJEBzwKT+lPKRYW+oQAKr/BQOhCwBxlA+0cboIWdoO HLQw8czwuYVqxag9cFiy7XiAUGmnph3pYfZTj6YcYXKDVBEeCuWEVPDFsSuRQG3u +I9UnWFnoFn8OCWJyv2RKKBfkZ3UhjJom3JmLnHxnWb4KbU9yz/ep5xNpJ43WY3x VxiPlkdksIKTiwycc6itM+5/URoHn5LzMSAdzb2ZFVhx/VlaubAfqaAo6fIVylTj TZ0JdZR9QNvL+KO+QPUN5c9j2unVk08oc1feNSyDOdWrs0Fg4e5i6qjORxroA17L 1uEZhnivHL8wvUt89F+oQ+1rqBIff+c242vdvDE7STJK4vUJfSk2JLPIvu/fApfl NhTgCCM8J7XOIUgCT556RHjioUhCumdzL24PUiIs30DSMYB2/5pC+jarF4+3iXI5 8tAeZR+vVaTaszKYoWjA37dV3WIC+06Us5v2hmmVcuyVxN+IE/hqrxpBkSORcbO4 5PpXJThPHQPvHMwJCywwIxaEDfLuxcWMXD4TJl5cogePt/BRA3p+9xafbuGJvEkN gaUDSNLXGMTd9iKUHdjH5g5arEPs0tIy5EJVpIcNk1X2QS0nfzH4P7TjrqNj432c fn3NPUUKn1QdIW6enyc6rgHnF+JHPFCETCtkmbX8lNfqr7rtorpmFXphvrFqcAFa B43OfQbSyuHsrkfVSoEx =RiHw -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: AW: AW: grab hostname from tomcat manager
bjoern.bec...@easycash.de wrote: -Ursprüngliche Nachricht- Von: Christopher Schultz [mailto:ch...@christopherschultz.net] Gesendet: Mittwoch, 2. April 2014 22:33 An: Tomcat Users List Betreff: Re: AW: grab hostname from tomcat manager -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Bjorn, On 4/2/14, 10:54 AM, bjoern.bec...@easycash.de wrote: -Ursprüngliche Nachricht- Von: André Warnier [mailto:a...@ice-sa.com] Gesendet: Mittwoch, 2. April 2014 16:35 An: Tomcat Users List Betreff: Re: grab hostname from tomcat manager bjoern.bec...@easycash.de wrote: Hello, I need to grab the hostname from the tomcat manager somehow. Unfortunately this URL manager/text/serverinfo doesn't contain the hostname. Is there any other smart way to receive the hostname via tomcat manager app? For give me for asking, but how do you access the tomcat manager if you do not know the hostname ? Good question :). But I got a good reason for it. I got two servers with several tomcat instances. In front of them is a loadbalancer with is configured to do a failover. -LB- / \ Server1:8081 Server2:8081 I need to write a shell script to sync a specific directory and for each tomcat instance I need to know on which one the loadbalancer is targeting at the moment. How will you check to see which one the lb is targeting? That's the question. If tomcat 8081 on server 1 is down, the loadbalancer will point to server 2 tomcat 8081. I can find it out through the loadbalancer address only. You should probably set a jvmRoute in your Engine in server.xml. That way, you can detect which back-end server you are getting just by looking at the JSESSIONID cookie. That's the answer. When jvmroute is define I easily can receive the jsession id with wget: wget -q -O - --no-cache --keep-session-cookies --no-check-certificate --save-cookies cookies.txt https://loadbalanceraddress:8081/manager --user=user--password=secure 1/dev/null perfect! Alternatively, I suppose that you could just create a small JSP (or even HTML, but then host-specific) page in each host, which returns the real hostname. You should probably be careful however : in your rsync scenario above, is there any guarantee that between the time you ask for the hostname (in whatever way), and the time at which you do your rsync, the targeted host will still be the same ? Remember that if things /can/ happen, they /do/ happen. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: AW: AW: grab hostname from tomcat manager
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 André, On 4/3/14, 5:14 AM, André Warnier wrote: bjoern.bec...@easycash.de wrote: -Ursprüngliche Nachricht- Von: Christopher Schultz [mailto:ch...@christopherschultz.net] Gesendet: Mittwoch, 2. April 2014 22:33 An: Tomcat Users List Betreff: Re: AW: grab hostname from tomcat manager -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Bjorn, On 4/2/14, 10:54 AM, bjoern.bec...@easycash.de wrote: -Ursprüngliche Nachricht- Von: André Warnier [mailto:a...@ice-sa.com] Gesendet: Mittwoch, 2. April 2014 16:35 An: Tomcat Users List Betreff: Re: grab hostname from tomcat manager bjoern.bec...@easycash.de wrote: Hello, I need to grab the hostname from the tomcat manager somehow. Unfortunately this URL manager/text/serverinfo doesn't contain the hostname. Is there any other smart way to receive the hostname via tomcat manager app? For give me for asking, but how do you access the tomcat manager if you do not know the hostname ? Good question :). But I got a good reason for it. I got two servers with several tomcat instances. In front of them is a loadbalancer with is configured to do a failover. -LB- / \ Server1:8081 Server2:8081 I need to write a shell script to sync a specific directory and for each tomcat instance I need to know on which one the loadbalancer is targeting at the moment. How will you check to see which one the lb is targeting? That's the question. If tomcat 8081 on server 1 is down, the loadbalancer will point to server 2 tomcat 8081. I can find it out through the loadbalancer address only. You should probably set a jvmRoute in your Engine in server.xml. That way, you can detect which back-end server you are getting just by looking at the JSESSIONID cookie. That's the answer. When jvmroute is define I easily can receive the jsession id with wget: wget -q -O - --no-cache --keep-session-cookies --no-check-certificate --save-cookies cookies.txt https://loadbalanceraddress:8081/manager --user=user--password=secure 1/dev/null perfect! Alternatively, I suppose that you could just create a small JSP (or even HTML, but then host-specific) page in each host, which returns the real hostname. You should probably be careful however : in your rsync scenario above, is there any guarantee that between the time you ask for the hostname (in whatever way), and the time at which you do your rsync, the targeted host will still be the same ? Remember that if things /can/ happen, they /do/ happen. I still don't really grok the use case, here, but if you use a bogus JSESSIONID (like GimmieMyServer.jvmRoute), you can select the backend server if you are using a load balancer that understands what the jvmRoute means (like mod_jk does, for instance). - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTPYd6AAoJEBzwKT+lPKRYHngQAJ6zTouqqV4riBzgB6peRFTT PxMGOT/yEfWxPnja8ZUeY9XRT6n3N07eg6vyELEOVSBMyXZSeeyef7mOomUPgrZz /ADu7tieCE/bUkW24xrOs4Uklw+1AmeYwheTZ5bztHZRhkGpEqEExQD/E/6lVnQH OpNv1MWIkUumk3f3UeIviibyrv/AAdCxgjukAgFkk2zWTAcLtYgBZ1psS8NpDUO8 ynM0drQuThCpdZmfCjSQWC+V+U7PS2Qc8L5q9xYm6dnilDhUp0YDW0Gf3/zTUudX gBXTkE9XN2AnG6UnP+st//Jrwwjjw8PEL6u6q1fpThSyWRq9A8A8yYHm4O6qYMiW A/YtOHlyGZ7L4E2T+bshz56AInEUEKEVSjdlZH95W17zgOlVqgWuFZAQG59Yow2D U18NEN4PnFOjxwsMY6VdpK3tSL+Tu3EazYt0qfyhV/vguhufOpNjNoZC6hfDyh5C zdcV8kKdogvjhl2zR9yjm+nFOIEH6B+TiQB96/XphX7MBY7DYJFwOkshDPN6dd0w PwSXCbuX9i7WMEYPNmkqK1fgPtqqVdx7Sj586OYThEi3SVNhP2+owx0/OEqhuYey BOm+i2z+FTzS87q20PV7tOsJbh5H5JkHxP6MXNVSY4Yah+XUbYCo9VU8LxbgTmDZ jCNjBmv4hnYMmvZFdzzX =6lZK -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
grab hostname from tomcat manager
Hello, I need to grab the hostname from the tomcat manager somehow. Unfortunately this URL manager/text/serverinfo doesn't contain the hostname. Is there any other smart way to receive the hostname via tomcat manager app? Best Regards, Bjoern - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: grab hostname from tomcat manager
bjoern.bec...@easycash.de wrote: Hello, I need to grab the hostname from the tomcat manager somehow. Unfortunately this URL manager/text/serverinfo doesn't contain the hostname. Is there any other smart way to receive the hostname via tomcat manager app? For give me for asking, but how do you access the tomcat manager if you do not know the hostname ? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: grab hostname from tomcat manager
On Wed, Apr 2, 2014 at 6:07 AM, bjoern.bec...@easycash.de wrote: Hello, I need to grab the hostname from the tomcat manager somehow. Unfortunately this URL manager/text/serverinfo doesn't contain the hostname. Is there any other smart way to receive the hostname via tomcat manager app? Best Regards, Bjoern - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org Programmatically grab? or just see it? There is a link on the manager homepage for server status which will show the host name to you.
AW: grab hostname from tomcat manager
-Ursprüngliche Nachricht- Von: André Warnier [mailto:a...@ice-sa.com] Gesendet: Mittwoch, 2. April 2014 16:35 An: Tomcat Users List Betreff: Re: grab hostname from tomcat manager bjoern.bec...@easycash.de wrote: Hello, I need to grab the hostname from the tomcat manager somehow. Unfortunately this URL manager/text/serverinfo doesn't contain the hostname. Is there any other smart way to receive the hostname via tomcat manager app? For give me for asking, but how do you access the tomcat manager if you do not know the hostname ? Good question :). But I got a good reason for it. I got two servers with several tomcat instances. In front of them is a loadbalancer with is configured to do a failover. -LB- / \ Server1:8081Server2:8081 I need to write a shell script to sync a specific directory and for each tomcat instance I need to know on which one the loadbalancer is targeting at the moment. If tomcat 8081 on server 1 is down, the loadbalancer will point to server 2 tomcat 8081. I can find it out through the loadbalancer address only. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: AW: grab hostname from tomcat manager
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Bjorn, On 4/2/14, 10:54 AM, bjoern.bec...@easycash.de wrote: -Ursprüngliche Nachricht- Von: André Warnier [mailto:a...@ice-sa.com] Gesendet: Mittwoch, 2. April 2014 16:35 An: Tomcat Users List Betreff: Re: grab hostname from tomcat manager bjoern.bec...@easycash.de wrote: Hello, I need to grab the hostname from the tomcat manager somehow. Unfortunately this URL manager/text/serverinfo doesn't contain the hostname. Is there any other smart way to receive the hostname via tomcat manager app? For give me for asking, but how do you access the tomcat manager if you do not know the hostname ? Good question :). But I got a good reason for it. I got two servers with several tomcat instances. In front of them is a loadbalancer with is configured to do a failover. -LB- / \ Server1:8081 Server2:8081 I need to write a shell script to sync a specific directory and for each tomcat instance I need to know on which one the loadbalancer is targeting at the moment. How will you check to see which one the lb is targeting? If tomcat 8081 on server 1 is down, the loadbalancer will point to server 2 tomcat 8081. I can find it out through the loadbalancer address only. You should probably set a jvmRoute in your Engine in server.xml. That way, you can detect which back-end server you are getting just by looking at the JSESSIONID cookie. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTPHPuAAoJEBzwKT+lPKRYW+oQAKr/BQOhCwBxlA+0cboIWdoO HLQw8czwuYVqxag9cFiy7XiAUGmnph3pYfZTj6YcYXKDVBEeCuWEVPDFsSuRQG3u +I9UnWFnoFn8OCWJyv2RKKBfkZ3UhjJom3JmLnHxnWb4KbU9yz/ep5xNpJ43WY3x VxiPlkdksIKTiwycc6itM+5/URoHn5LzMSAdzb2ZFVhx/VlaubAfqaAo6fIVylTj TZ0JdZR9QNvL+KO+QPUN5c9j2unVk08oc1feNSyDOdWrs0Fg4e5i6qjORxroA17L 1uEZhnivHL8wvUt89F+oQ+1rqBIff+c242vdvDE7STJK4vUJfSk2JLPIvu/fApfl NhTgCCM8J7XOIUgCT556RHjioUhCumdzL24PUiIs30DSMYB2/5pC+jarF4+3iXI5 8tAeZR+vVaTaszKYoWjA37dV3WIC+06Us5v2hmmVcuyVxN+IE/hqrxpBkSORcbO4 5PpXJThPHQPvHMwJCywwIxaEDfLuxcWMXD4TJl5cogePt/BRA3p+9xafbuGJvEkN gaUDSNLXGMTd9iKUHdjH5g5arEPs0tIy5EJVpIcNk1X2QS0nfzH4P7TjrqNj432c fn3NPUUKn1QdIW6enyc6rgHnF+JHPFCETCtkmbX8lNfqr7rtorpmFXphvrFqcAFa B43OfQbSyuHsrkfVSoEx =RiHw -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
