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davidhq's questions

Martin Hope
davidhq
Asked: 2016-11-02 21:58:59 +0800 CST
  • 0

I have 3 Supermicro AS-1042G-TF servers and on one there is no data shown for power supply, JAVA application for MAC shows an empty window as do IPMIView apps for iOS and Android, on Android there is a message: "cannot detect slave address".

enter image description here

I tried:

  • unplugging the machine
  • resetting BMC via IPMIView iOS app
  • resetting IPMI to factory defaults with IPMICFG (-fd and then -fde options)

but nothing changes...

Is it a hardware fault or maybe some jumper on motherboard?

power-supply-unit ipmi
Martin Hope
davidhq
Asked: 2016-04-22 02:02:51 +0800 CST
  • 1

This used to work:

server {
  server_name example.com;

  location / {
    proxy_pass http://localhost:8888;
    error_page 502 /502.html;
  }

  location = /502.html {
    root /var/www/example;
  }
}

Now suddenly it doesn't anymore... I don't know what changed ?

I get 404 instead of displayed /var/www/example/index.html in case port 8888 doesn't respond...

How to make this work again? thank you

nginx 502-error
Martin Hope
davidhq
Asked: 2016-04-17 02:36:08 +0800 CST
  • 2

This didn't work for some reason:

server {
    listen       80;
    server_name  localhost;

    location / {
        root   html;
        index  index.html index.htm;
    }
    ...
}

I got 

Failed to connect ... port 80: Connection refused

(I tested that nginx was running and port 80 was taken by it)

I then changed listen directive to:

listen [::]:80;

and it worked...

but I have further problems with other servers, for example:

server {
  #listen       80;
  listen [::]:80;
  server_name project.dev;

  location / {
    try_files $uri $uri.html $uri/index.html;
    root /Users/david/project;
    index  index.html index.htm;
  }
}

I put project.dev in /etc/hosts:

127.0.0.1       project.dev

but here I get 

curl: (7) Failed to connect to project.dev port 80: Connection refused

no matter what...

I didn't like it that I have to specify ip6 ([::]) in the first place, but now I like it even less because it doesn't even work with other server directives except the main one...

How to get out of this mess?

mac-osx nginx port-80
Martin Hope
davidhq
Asked: 2016-03-27 15:10:37 +0800 CST
  • 0

I have a express.js app running at some port and this nginx configuration:

server {
  server_name example.com;
  access_log /var/www/example/log/nginx.access.log;

  location / {
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_redirect off;
    proxy_pass http://localhost:3000;
  }
}

There is index.html served the /source route which includes scripts like this:

<script src="/source/assets/js/script.js"></script>

The problem is that it cannot load this script, request results in 502 Bad Gateway.

enter image description here

While

curl http://example.com/source/assets/js/script.js

works fine, as does entering this url in the browser... Just reference from index.html doesn't... the same with style.css.

In the log I see this:

90.100.44.55 - - [26/Mar/2016:22:47:13 +0000] "GET /source/assets/js/script.js HTTP/1.1" 502 574 "http://example.com/source" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.111 Safari/537.36"

Direct request (curl or browser) that works looks like this:

90.100.44.55 - - [26/Mar/2016:22:47:24 +0000] "GET /source/assets/js/script.js HTTP/1.1" 200 8358 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.111 Safari/537.36"

Any ideas?

UPDATE:

I enabled nginx error log: 

2016/03/27 00:26:36 [error] 32079#0: *319759 connect() failed (111: Connection refused) while connecting to upstream, client: 90.100.44.55, server: example.com, request: "GET /source/assets/css/styles.css HTTP/1.1", upstream: "http://127.0.0.1:3011/source/assets/css/styles.css", host: "example.com", referrer: "http://example.com/source"

But when I do 

http://127.0.0.1:3011/source/assets/css/styles.css

on the server, it works :/

nginx
Martin Hope
davidhq
Asked: 2015-01-19 08:20:12 +0800 CST
  • 0

I'm running something (=Faye server) on port 9292:

david@theta:~$ lsof -ni tcp:9292
COMMAND  PID  USER   FD   TYPE     DEVICE SIZE/OFF NODE NAME
ruby    2406 david   13u  IPv4 1579461398      0t0  TCP 127.0.0.1:9292 (LISTEN)

david@theta:~$ telnet localhost 9292
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.

The problem is that from elsewhere I cannot reach it:

david@eclipse:~$ telnet 188.226.243.223 9292
Trying 188.226.243.223...
telnet: connect to address 188.226.243.223: Connection refused

Port 80 works:

david@eclipse:~$ telnet 188.226.243.223 80
Trying 188.226.243.223...
Connected to 188.226.243.223.
Escape character is '^]'.

I'm not using any firewalls. Is faye bound to 9292 only locally for some reason? Wasn't like that before...

What else can I try?

Thank you, David

linux
Martin Hope
davidhq
Asked: 2013-08-01 13:18:42 +0800 CST
  • 4

I tried to install Phusion Passenger and since I had less than 1GB free memory it recommended temporarily adding swap space with there commands:

sudo dd if=/dev/zero of=/swap bs=1M count=1024
sudo mkswap /swap
sudo swapon /swap

Passenger installed successfully so do I now have to disable that swap space - how? It didn't say anything about reverting but I think it should because it said "temporarily add swap space". How do I negate this effect now?

phusion-passenger