"First, solve the problem. Then, write the code." (John Johnson)
Had a little problem with letsencrypt, when I tried to renew the certificates, the following error showed:
So I looked in /var/log/letsencrypt/letsencrypt.log :
So…. I had no clue, but a quick search on stackoverflow showed that I missed a package
And all ended well. I renewed the certificates:
Simplify and reduce the size of the Xsd by deleting the unused declarations from it : http://www.abhortsoft.hu/xsdreducer/xsd_reducer.html
Just does what it says. Good little tool.
http://www.javais.cool :” There are many resources on news sites and blogs that carry valuable insights for your projects. Some are already well known, some a bit less and together they will keep you on the right track. Here are our favorites:”
In Git, you can’t commit empty folders, because Git does not actually save folders, only files. You’ll have to create some placeholder file inside those directories, if you actually want them to be “empty”.
You could create a empty .gitignore file inside each empty folder. I find this confusing, since the goal is to keep the empty directories, not ignore them or some files inside of them.
With the following script you can create a file named “.gitkeep” inside every empty folder. The filename has no meaning for git, but it makes it purpose clear.
Recently I did not receive a response, after calling a webapp. There was no entry/error in the Application log. It was wired.
Setup: Caller → Apache → Tomcat with Webapp
After inspecting the apache logs, I found the following entries: “AH00992: ajp_read_header: ajp_ilink_receive failed”. I could not reproduce them, they just happened. As it turn out, my image of “my” setup was wrong:
Real Setup: Caller → Apache → Firewall → Tomcat with Webapp
The firewall kept droping the connection. No reason whatsoever. Since I have no controll over the firewall, I modified the timeouts of the http and the application server:
For Apache HTTP + MOD_PROXY: ProxyPass Directive
In Tomcat: Just set the “connectionTimeout” in the AJP connector. Source: JK Timeout Attributes -> Connection Pools and Idle Timeouts
- google drive
- version control
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