HTTP apache server Error 503 service unavailable - apache

I have this problem message.
Service Unavailable
The server is temporarily unable to service your request due to maintenance
in localhost apache downtime or capacity problems.
Please try again later.
yesterday i opened the localhost and it was fine
but today i have this error every time i'm using fedora
what is the problem please? and how can i solve it?
thank you

Related

WordPress instances on Amazon Lighsail virtual server throwing 503 Service Temporarily Unavailable

I have a new lightsail instance running wordpress, 20GB plan, running a wordpress app. When I go to the IP address in my browser, I get a 503 Service Temporarily Unavailable error. I tried restarting the stack, that didn't help. I tried rebooting, that didn't help. Other instances I've started up came up just fine without problems. There's no useful error message in apache logs. Not sure what the problem is, not sure where else to look.
Dammit, typo in the IP address. Checked that thing like 5x. There goes an hour.

server hangup magento2 apache 2.4

I am running magento2 appication on php 7.0.32 with apache2.4 but frequently i am getting server hangup.
server hangup screenshot
I am not able to find root cause if any one facing the same let me know.
Thanks in advance.

ASPX.NET Core - random 502 error on IIS server

We just launched a site that runs on ASP.NET Core 1.1, Windows 2008R2, IIS 7.5 with all the latest patches to 2008 and asp.net.
The site runs fine, but goes down with no apparent pattern. All of a sudden it would start returning 502 response:
502 – Web server received an invalid response while acting as a gateway or proxy server
Restarting the site in IIS, or recycling site’s application pool brings the site up, but the problem reoccurs within a few hours. As workaround, we configured IIS to recycle app pool every 90 minutes, and that seemed to keep the site up all of the time.
Any recommendations on how to troubleshoot this problem?
Thank you!
IIS says with this 502 error that Kestrel (behind it) returned something "wrong". Enable (more) logging, and inspect logs before first 502 response. Some previous request "breaks" your app.

Apache - AH00341: winnt_accept: Asynchronous AcceptEx failed

I'm using apache for my system. Recently I received complaints from the client saying they unable to access the system. I remote to my server and checks my Apache and its working fine. I try to launch the localhost ant it working fine also. I could not find any issue and have no other go rather than restarted my apache. After restarted the system back to normal. After some digging in the log files, I found something there.
The specified network name is no longer available. : AH00341: winnt_accept: Asynchronous AcceptEx failed.
I try to google it out but unable to find the solution for this. Is there anyone face the same issue earlier and solve this. Below is my server details:
Window Server 2008 R2 Standard
Apache 2.4
Using SSL Connection
Any advice or reference links for the issue is highly appreciated.
This usually occurs due to some software or driver inserting itself into the Windows network stack. You can skip over these layers by adding this to 2.4:
AcceptFilter https none
AcceptFilter http none
In older releases, this was turned off "Win32DisableAcceptEX".

Proxy Error - Error During SSL handshake

We have an application that posts some xml data to another application and traffic flows through apache web server (version 2.2.26) reverse proxy. we are observing some sporadic Proxy Error (http response code 500) - SSL handshake error with the remove server. The error message is shown in apache web server error logs.
Earlier we were using sunOne web server and we didn't notice this error.
i am suspecting that may be some missing configuration on apache web server that is causing this issue. this is just my guess.
Please advise if anyone has any experience around this issue.
I had a similar issue with Microsofts IIS, maybe it helps you.
There was a problem with the compression, the proxy did not support gzip so I forced the proxy to set the compression to none.
Afterwards (outboundrule), I changed the compression back to the original header sended from client.
This was very strange issue where Apache complained about SSL Handshaking but it turned out to be something else, finally the issue got resolved by placing the SetEnv proxy-sendchunked in rproxy.conf file.