[CentOS] Starting the gotour server on CentOS 6
Hey CentOS folks! I have an interesting issue with starting a server on a CentOS 6 KVM guest. The server (service) in particular is gotour, which is a web application created by Google and their Golang developers, intended to teach users the basics of using the Go programming langauge. When starting gotour, the program claims to be binding to port 12049, but the VM doesn't seem to be serving anything on that port. Upon checking the netstat output, I see a process bound to port 12049. It is definitley possible that the problem is with Go itself, but I'd like to rule out the possibility that something on an out-of-the-box CentOS 6 image might be preventing the server from working. Here is some of the output: [appengine@centos6-paas-dev gotour]$ gotour 2014/04/17 22:04:33 Serving content from /home/appengine/goprojects/firstproj/go/src/code.google.com/p/go-tour 2014/04/17 22:04:33 WARNING! WARNING! WARNING! I appear to be listening on an address that is not localhost. Anyone with access to this address and port will have access to this machine as the user running gotour. If you don't understand this message, hit Control-C to terminate this process. WARNING! WARNING! WARNING! 2014/04/17 22:04:34 Please open your web browser and visit http://10.10.10.205:12049 [root@centos6-paas-dev ~]# netstat -pnaevZ Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program nameSecurity Context ... tcp0 0 10.10.10.205:12049 0.0.0.0:* LISTEN 505224898 9331/gotour fined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 [appengine@centos6-paas-dev gotour]$ getenforce Permissive Any ideas? -- - EJR ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Starting the gotour server on CentOS 6
On 04/18/2014 01:13 PM, Evan Rowley wrote: Hey CentOS folks! I have an interesting issue with starting a server on a CentOS 6 KVM guest. The server (service) in particular is gotour, which is a web application created by Google and their Golang developers, intended to teach users the basics of using the Go programming langauge. When starting gotour, the program claims to be binding to port 12049, but the VM doesn't seem to be serving anything on that port. Upon checking the netstat output, I see a process bound to port 12049. It is definitley possible that the problem is with Go itself, but I'd like to rule out the possibility that something on an out-of-the-box CentOS 6 image might be preventing the server from working. Here is some of the output: [appengine@centos6-paas-dev gotour]$ gotour 2014/04/17 22:04:33 Serving content from /home/appengine/goprojects/firstproj/go/src/code.google.com/p/go-tour 2014/04/17 22:04:33 WARNING! WARNING! WARNING! I appear to be listening on an address that is not localhost. Anyone with access to this address and port will have access to this machine as the user running gotour. If you don't understand this message, hit Control-C to terminate this process. WARNING! WARNING! WARNING! 2014/04/17 22:04:34 Please open your web browser and visit http://10.10.10.205:12049 [root@centos6-paas-dev ~]# netstat -pnaevZ Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program nameSecurity Context ... tcp0 0 10.10.10.205:12049 0.0.0.0:* LISTEN 505224898 9331/gotour fined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 [appengine@centos6-paas-dev gotour]$ getenforce Permissive Any ideas iptables -L ? do you have the local firewall running? 'service iptables stop', test, but don't leave it that way. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Starting the gotour server on CentOS 6
On 04/18/2014 12:13 PM, Evan Rowley wrote: Hey CentOS folks! I have an interesting issue with starting a server on a CentOS 6 KVM guest. The server (service) in particular is gotour, which is a web application created by Google and their Golang developers, intended to teach users the basics of using the Go programming langauge. When starting gotour, the program claims to be binding to port 12049, but the VM doesn't seem to be serving anything on that port. Upon checking the netstat output, I see a process bound to port 12049. It is definitley possible that the problem is with Go itself, but I'd like to rule out the possibility that something on an out-of-the-box CentOS 6 image might be preventing the server from working. Here is some of the output: [appengine@centos6-paas-dev gotour]$ gotour 2014/04/17 22:04:33 Serving content from /home/appengine/goprojects/firstproj/go/src/code.google.com/p/go-tour 2014/04/17 22:04:33 WARNING! WARNING! WARNING! I appear to be listening on an address that is not localhost. Anyone with access to this address and port will have access to this machine as the user running gotour. If you don't understand this message, hit Control-C to terminate this process. WARNING! WARNING! WARNING! 2014/04/17 22:04:34 Please open your web browser and visit http://10.10.10.205:12049 [root@centos6-paas-dev ~]# netstat -pnaevZ Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program nameSecurity Context ... tcp0 0 10.10.10.205:12049 0.0.0.0:* LISTEN 505224898 9331/gotour fined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 [appengine@centos6-paas-dev gotour]$ getenforce Permissive Any ideas? Is that port open in your host firewall? A quick check with iptables should tell you. If 'iptables -L -n | grep 12049' doesn't return something then it might need to be opened up in the firewall. -- Jay Leafey - jay.lea...@mindless.com Memphis, TN ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Starting the gotour server on CentOS 6
zep, you nailed it. It was exactly iptables that caused the issue for me. Thanks. You rock! On Fri, Apr 18, 2014 at 1:20 PM, zep zgreenfel...@gmail.com wrote: On 04/18/2014 01:13 PM, Evan Rowley wrote: Hey CentOS folks! I have an interesting issue with starting a server on a CentOS 6 KVM guest. The server (service) in particular is gotour, which is a web application created by Google and their Golang developers, intended to teach users the basics of using the Go programming langauge. When starting gotour, the program claims to be binding to port 12049, but the VM doesn't seem to be serving anything on that port. Upon checking the netstat output, I see a process bound to port 12049. It is definitley possible that the problem is with Go itself, but I'd like to rule out the possibility that something on an out-of-the-box CentOS 6 image might be preventing the server from working. Here is some of the output: [appengine@centos6-paas-dev gotour]$ gotour 2014/04/17 22:04:33 Serving content from /home/appengine/goprojects/firstproj/go/src/code.google.com/p/go-tour 2014/04/17 22:04:33 WARNING! WARNING! WARNING! I appear to be listening on an address that is not localhost. Anyone with access to this address and port will have access to this machine as the user running gotour. If you don't understand this message, hit Control-C to terminate this process. WARNING! WARNING! WARNING! 2014/04/17 22:04:34 Please open your web browser and visit http://10.10.10.205:12049 [root@centos6-paas-dev ~]# netstat -pnaevZ Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program nameSecurity Context ... tcp0 0 10.10.10.205:12049 0.0.0.0:* LISTEN 505224898 9331/gotour fined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 [appengine@centos6-paas-dev gotour]$ getenforce Permissive Any ideas iptables -L ? do you have the local firewall running? 'service iptables stop', test, but don't leave it that way. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- - EJR ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Starting the gotour server on CentOS 6
For the record, this is what I added to /etc/sysconfig/iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 12049 -j ACCEPT ^ right after the same line for allowing SSH connections. On Fri, Apr 18, 2014 at 1:22 PM, Jay Leafey jay.lea...@mindless.com wrote: On 04/18/2014 12:13 PM, Evan Rowley wrote: Hey CentOS folks! I have an interesting issue with starting a server on a CentOS 6 KVM guest. The server (service) in particular is gotour, which is a web application created by Google and their Golang developers, intended to teach users the basics of using the Go programming langauge. When starting gotour, the program claims to be binding to port 12049, but the VM doesn't seem to be serving anything on that port. Upon checking the netstat output, I see a process bound to port 12049. It is definitley possible that the problem is with Go itself, but I'd like to rule out the possibility that something on an out-of-the-box CentOS 6 image might be preventing the server from working. Here is some of the output: [appengine@centos6-paas-dev gotour]$ gotour 2014/04/17 22:04:33 Serving content from /home/appengine/goprojects/firstproj/go/src/code.google.com/p/go-tour 2014/04/17 22:04:33 WARNING! WARNING! WARNING! I appear to be listening on an address that is not localhost. Anyone with access to this address and port will have access to this machine as the user running gotour. If you don't understand this message, hit Control-C to terminate this process. WARNING! WARNING! WARNING! 2014/04/17 22:04:34 Please open your web browser and visit http://10.10.10.205:12049 [root@centos6-paas-dev ~]# netstat -pnaevZ Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program nameSecurity Context ... tcp0 0 10.10.10.205:12049 0.0.0.0:* LISTEN 505224898 9331/gotour fined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 [appengine@centos6-paas-dev gotour]$ getenforce Permissive Any ideas? Is that port open in your host firewall? A quick check with iptables should tell you. If 'iptables -L -n | grep 12049' doesn't return something then it might need to be opened up in the firewall. -- Jay Leafey - jay.lea...@mindless.com Memphis, TN ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- - EJR ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Starting the gotour server on CentOS 6
Your network config needs attention (Sent from iPhone, so please accept my apologies in advance for any spelling or grammatical errors.) On Apr 18, 2014, at 10:13 AM, Evan Rowley rowley.e...@gmail.com wrote: Hey CentOS folks! I have an interesting issue with starting a server on a CentOS 6 KVM guest. The server (service) in particular is gotour, which is a web application created by Google and their Golang developers, intended to teach users the basics of using the Go programming langauge. When starting gotour, the program claims to be binding to port 12049, but the VM doesn't seem to be serving anything on that port. Upon checking the netstat output, I see a process bound to port 12049. It is definitley possible that the problem is with Go itself, but I'd like to rule out the possibility that something on an out-of-the-box CentOS 6 image might be preventing the server from working. Here is some of the output: [appengine@centos6-paas-dev gotour]$ gotour 2014/04/17 22:04:33 Serving content from /home/appengine/goprojects/firstproj/go/src/code.google.com/p/go-tour 2014/04/17 22:04:33 WARNING! WARNING! WARNING! I appear to be listening on an address that is not localhost. Anyone with access to this address and port will have access to this machine as the user running gotour. If you don't understand this message, hit Control-C to terminate this process. WARNING! WARNING! WARNING! 2014/04/17 22:04:34 Please open your web browser and visit http://10.10.10.205:12049 [root@centos6-paas-dev ~]# netstat -pnaevZ Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program nameSecurity Context ... tcp0 0 10.10.10.205:12049 0.0.0.0:* LISTEN 505224898 9331/gotour fined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 [appengine@centos6-paas-dev gotour]$ getenforce Permissive Any ideas? -- - EJR ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Starting the gotour server on CentOS 6
Hal Wigoda wrote: Your network config needs attention On Apr 18, 2014, at 10:13 AM, Evan Rowley rowley.e...@gmail.com wrote: snip Here is some of the output: [appengine@centos6-paas-dev gotour]$ gotour 2014/04/17 22:04:33 Serving content from /home/appengine/goprojects/firstproj/go/src/code.google.com/p/go-tour 2014/04/17 22:04:33 WARNING! WARNING! WARNING! I appear to be listening on an address that is not localhost. Anyone with access to this address and port will have access to this machine as the user running gotour. If you don't understand this message, hit Control-C to terminate this process. WARNING! WARNING! WARNING! 2014/04/17 22:04:34 Please open your web browser and visit http://10.10.10.205:12049 snip Is that 10.10.10.205 on your internal network, or is it the host's visible to the guest network? Have you gone there? mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Starting the gotour server on CentOS 6
Tbh, this is actually running on an undisclosed public IP address. The server is only being used for small tests, so I do consider it somewhat disposable. Even then, I should look into isolating it's exposure with some stricter iptables rules. On Apr 18, 2014 3:28 PM, m.r...@5-cent.us wrote: Hal Wigoda wrote: Your network config needs attention On Apr 18, 2014, at 10:13 AM, Evan Rowley rowley.e...@gmail.com wrote: snip Here is some of the output: [appengine@centos6-paas-dev gotour]$ gotour 2014/04/17 22:04:33 Serving content from /home/appengine/goprojects/firstproj/go/src/code.google.com/p/go-tour 2014/04/17 22:04:33 WARNING! WARNING! WARNING! I appear to be listening on an address that is not localhost. Anyone with access to this address and port will have access to this machine as the user running gotour. If you don't understand this message, hit Control-C to terminate this process. WARNING! WARNING! WARNING! 2014/04/17 22:04:34 Please open your web browser and visit http://10.10.10.205:12049 snip Is that 10.10.10.205 on your internal network, or is it the host's visible to the guest network? Have you gone there? mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
