Public bug reported: When starting/stopping Jetty via its init script (/etc/init.d/jetty), we can get strange/wrong/inconsistent information about the host and port in which Jetty is/was listen.
This occurs in Ubuntu 14.04, but probably occurs in other Ubuntu/Debian versions since the `/etc/init.d/jetty` script is basically the same. I will show some examples in a fresh install of Jetty (with `NO_START=0`) in a machine which hostname is `ip-172-31-45-218`. ``` root@ip-172-31-45-218:~# service jetty start * Starting Jetty servlet engine. jetty * Jetty servlet engine started, reachable on http://ip-172-31-45-218:8080/. jetty [ OK ] root@ip-172-31-45-218:~# service jetty status * Jetty servlet engine is running with pid 5477, and is reachable on http://:8080/ root@ip-172-31-45-218:~# service jetty stop * Stopping Jetty servlet engine (was reachable on http://ip-172-31-45-218:8080/). jetty * Jetty servlet engine stopped. jetty [ OK ] ``` Here, we have the first strange thing: - Start/stop report reachable on http://ip-172-31-45-218:8080/, while status reports reachable on http://:8080/. The outputs are somehow inconsistent. Running some curls: ``` root@ip-172-31-45-218:~# curl http://ip-172-31-45-218:8080 curl: (7) Failed to connect to ip-172-31-45-218 port 8080: Connection refused root@ip-172-31-45-218:~# curl http://127.0.0.1:8080 root@ip-172-31-45-218:~# curl http://127.0.0.1:8080 <HTML> <HEAD> <TITLE>Welcome to Jetty 6 on Debian</TITLE> [...] ``` Even if we put `127.0.1.1 ip-172-31-45-218` or `172.31.45.218 ip-172-31-45-218` in `/etc/hosts`, as expected in Ubuntu hosts` in `/etc/hosts`, as expected in Ubuntu hosts, the first curl won't work. This is because Jetty listens on 127.0.0.1 / ::1 when no host is informed: ``` root@ip-172-31-45-218:~# netstat -anlp | grep 8080 tcp6 0 0 127.0.0.1:8080 :::* LISTEN 5613/jsvc.exec ``` The same thing will happen if we change Jetty to listen in a specific IP address different than the represented by the hostname. Now, the second thing: - Start/stop can print unreachable address (Jetty is NOT reachable in this address). And the third: - Status prints a strange address if `JETTY_HOST` is blank, and it should print 127.0.0.1 Now, if we change in `/etc/default/jetty` `JETTY_HOST` to 90.90.90.90, do not restart Jetty (only change the config file), and run status, the status command will return the wrong host: ``` root@ip-172-31-45-218:~# service jetty status * Jetty servlet engine is running with pid 5613, and is reachable on http://90.90.90.90:8080/ root@ip-172-31-45-218:~# netstat -anlp | grep 8080 tcp6 0 0 127.0.0.1:8080 :::* LISTEN 5613/jsvc.exec ``` The same thing would happen if we change the `JETTY_PORT` config. So, the fourth point: - Status can return wrong reachable information if the config file (host/port) was modified after Jetty had started There are a lot of other inconsistencies. In my opinion, it's easier to remove these informations in the init script (the admin can always check the config files and run netstat to get the correct info). But a more complex fix should consider checking netstat on stop/status commands, and checking the border cases (empty host - Jetty defaults to 12.0.0.1 / empty port - Jetty defaults to what is set in its XML config files, or 8080 if nothing more is changed) . ** Affects: jetty (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1646202 Title: jetty init file prints wrong reachable information To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jetty/+bug/1646202/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
