A question can only have one accepted answer. Are you sure you want to replace the current answer with this one?
You previously marked this answer as accepted. Are you sure you want to unaccept it?
I am trying to connect to an external smtp server from a droplet (NYC3) without success:
$> telnet xxx.xxx.xxx.xxx 25
Trying xxx.xxx.xxx.xxx …
telnet: Unable to connect to remote host: Connection timed out
Other servers in another area (SFO1) work without problems.
Can you help me?
thank you very much
You may need to contact DigitalOcean support - they don’t make it obvious to a customer AFAIK if SMTP is blocked on an account but it could be a block on their end.
I have a droplet running a postgres database and a droplet running an app server. The app server is able to access the database using the internal private IP (10.xx.xx.xx). This isn't ideal if the database server's IP address changes in the case of disaster recovery. It would be much nicer if I could access the database server over the private network via the hostname (db.xxxxx.com). This is not a domain name, just the hostname that I gave the droplet when I created it. Is this possible?
I'm running Ubuntu 14.04. For some reason I can no longer connect to the internet from my VPS and I can only access it from the VNC console :-( cat /etc/network/interfaces : ``` auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 178.62.xxx.xxx netmask 255.255.192.0 gateway 178.62.192.1 dns-nameservers 8.8.8.8 8.8.4.4 ``` route -n: ``` 0.0.0.0 178.62.192.1 0.0.0.0 UG 0 0 0 eth0 ``` ping -c 3 178.62.192.1: ``` From 178.62.xxx.xxx icmp_seq=1 Destination Host Unreachable ``` I have no clue where to look. I was messing around with the firewall earlier, but those should be inactive now. Both 'ufw status' and 'iptables -L' indicate this...
Hello, I have a project in my Univ. It's a chat App (android). So in order to make the connection is anonymous(future work). I will try connect to my sever first (Digital Ocean) through port 80 then I would like to redirect all of incoming traffic from that(port 80) to URL ( in this case I use Firebase for make communication with my app). So in my App codes, there is a script that have function to connect my app to Firebase: Firebase ref = new Firebase("https://<YOUR-FIREBASE-APP>.firebaseio.com"); I change it to http://iup2013.ddns.net . So it's like my App connect to Firebase directly but actually through my server in Digital Ocean first. Is there any chance about to redirect all of traffic from port 80 to Firebase Url with iptables ? *why I must connect to my server (digital ocean) first? becasue in future work I will make all of outcoming traffic through Tor to enhancing the privacy. hope you will help :)
Hi I manually install tomcat 8 in ubuntu 15. But I want to know how do I know if my tomcat is running or it's starting. sometimes, after I start the tomcat, I can't access the url with ip_address:port# right away, like the page is keeping running, but nothing display. But I have some error when I run "shutdown run". here is the process. when I run "catalina.sh run", it returns " Using CATALINA_BASE: /opt/tomcat Using CATALINA_HOME: /opt/tomcat Using CATALINA_TMPDIR: /opt/tomcat/temp Using JRE_HOME: /usr/lib/jvm/java-7-openjdk-amd64 Using CLASSPATH: /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar 21-Nov-2015 23:11:58.869 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version: Apache Tomcat/8.0.28 21-Nov-2015 23:11:58.876 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Oct 7 2015 18:25:21 UTC 21-Nov-2015 23:11:58.877 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number: 8.0.28.0 21-Nov-2015 23:11:58.877 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Linux 21-Nov-2015 23:11:58.877 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 4.2.0-16-generic 21-Nov-2015 23:11:58.878 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: amd64 21-Nov-2015 23:11:58.878 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: /usr/lib/jvm/java-7-openjdk-amd64/jre 21-Nov-2015 23:11:58.878 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.7.0_85-b01 21-Nov-2015 23:11:58.879 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation 21-Nov-2015 23:11:58.879 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: /opt/tomcat 21-Nov-2015 23:11:58.880 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: /opt/tomcat 21-Nov-2015 23:11:58.880 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties 21-Nov-2015 23:11:58.881 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 21-Nov-2015 23:11:58.881 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.endorsed.dirs=/opt/tomcat/endorsed 21-Nov-2015 23:11:58.881 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/opt/tomcat 21-Nov-2015 23:11:58.882 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/opt/tomcat 21-Nov-2015 23:11:58.882 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/opt/tomcat/temp 21-Nov-2015 23:11:58.882 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library 1.1.33 using APR version 1.5.2. 21-Nov-2015 23:11:58.883 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. 21-Nov-2015 23:11:58.925 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized (OpenSSL 1.0.1f 6 Jan 2014) 21-Nov-2015 23:11:59.095 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-apr-8088"] 21-Nov-2015 23:11:59.133 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-apr-8009"] 21-Nov-2015 23:11:59.142 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 1695 ms 21-Nov-2015 23:11:59.262 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina 21-Nov-2015 23:11:59.262 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.28 21-Nov-2015 23:11:59.306 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /opt/tomcat/webapps/host-manager " I didn't see errors here. Then I run "ps -ef | grep tomcat" and it returns " root 29583 29582 0 21:18 pts/2 00:00:03 /usr/lib/jvm/java-7-openjdk-amd64/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/tomcat/endorsed -classpath /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp org.apache.catalina.startup.Bootstrap start demo 29854 29467 0 23:01 pts/2 00:00:00 grep --color=auto tomcat " and I run "netstat -lnp | grep 8088", it returns " (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) tcp6 0 0 :::8088 :::* LISTEN - " I type url: ip_address:8088, but it shows the web is keeping running, nothing displayed. Hmm, okay, it displayed the tomcat page now. when I run "shutdown.sh run", it returns " Using CATALINA_BASE: /opt/tomcat Using CATALINA_HOME: /opt/tomcat Using CATALINA_TMPDIR: /opt/tomcat/temp Using JRE_HOME: /usr/lib/jvm/java-7-openjdk-amd64 Using CLASSPATH: /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar usage: java org.apache.catalina.startup.Catalina [ -config {pathname} ] [ -nonaming ] { -help | start | stop } Nov 21, 2015 11:09:41 PM org.apache.catalina.startup.Catalina stopServer SEVERE: Could not contact localhost:8006. Tomcat may not be running. Nov 21, 2015 11:09:41 PM org.apache.catalina.startup.Catalina stopServer SEVERE: Catalina.stop: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:579) at java.net.Socket.connect(Socket.java:528) at java.net.Socket.<init>(Socket.java:425) at java.net.Socket.<init>(Socket.java:208) at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:450) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.stopServer(Bootstrap.java:400) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:487) " Please help me to know what this is.