...request: "GET /index.html HTTP/1.1", upstream: "http://198.51.100.123:80/index.html", host: "192.0.2.10:80" The cause This behaviour was caused by an application that transforms parts of the query from the URL into...
...find dead code in puppet projects. To use it, (as of now) it's best to get the latest version from git, as the last release is not yet on...
Wondering what these numbers in the mount entries in /etc/fstab are meaning? The first number fs_freq When this field...
We recently encountered a problem with GlusterFS (7.x) when an application used the flock syscall on a GlusterFS path...
We often do some HTTP requests to fetch the data we want to check for certain criteria. Testing this in...
The Oracle mysql client has an odd behavior if your server uses latin1 as default character-set-server. Command mysql --version mysql Ver 8.0.31-0ubuntu0.20.04.2 for Linux on x86...
...character-set utf8 and set the character set inside the session to circumvent this behavior. Better solutions Use MariaDB mysql client The MariaDB mysql client handles the --default-character-set...
Sometimes you might need to do some task in GitLab which would be tedious if you'd have to do...
We had a strange behaviour on one of our mariadb-servers: Everyday at around midnight we saw that the root-account on one of our servers is trying to access...
This should not be necessary in any case and is only for special cases, for e.g. if the assets...
collectd5 in version 5.9.0 is broken and you upgraded it everywhere. But because it's FreeBSD it does not...
To delete a specific redis-DB you need to use the FLUSHDB-command in combination with the SELECT-command. For...
When you are using the default MIME-Type configuration and your application allows uploading files, it can be a security...
A convenient way to test SNS Subscription Filter Policies is using an email address as the subscription endpoint. However, for...
When terragrunt is relaying information to input variables it's happening via environment variables. Depending on the size of the...
After performing a live migration of a VM you may encounter issues with the clock of the migrated VM. The...
If you want to expand your Areca Raid by swapping out the disks for larger ones you will need to...
In our monitoring, RabbitMQ queues like aliveness-test may show up as unresponsive, with a ping timeout after 10 seconds...
Systemd's networkd will drop IP-Addresses configured by other processes like Keepalived's VRRP, when it is restarted. This...
If you get an error message like this: You have already activated some-gem 1.2.3, but your Gemfile requires some...
Getting the whole bucket size aws s3 ls s3://$BUCKETNAME/ --recursive --human-readable --summarize | tail -n2 Tail is used because...
If you get e.g. this error message when you try to run puppet agent: Error: Failed to apply catalog: undefined...
We want to make the following firewall rule to be applyable to different network interfaces (for e.g. different environments...
You will need to look here and find your own device. Look for the "bootable CD" download, which will give...
Best results in other decks
The Web Animations API has great browser support, and you should be using it to animate DOM elements from JavaScript...
...Also see here for further examples. Please note: Usually it is preferrable to test behaviour, not method calls. Since the behaviour of both validators is thoroughly tested in their own...