It is possible to manipulate the forwarded ports of an established interactive SSH session. This is done by opening the...
When you're using a third party repository on your Ubuntu or Debian system and need to find out which...
We recently encountered a problem with GlusterFS (7.x) when an application used the flock syscall on a GlusterFS path...
A lot of web applications require being called over https, which is a good thing. It's possible to configure...
It is a good idea to use named variables for storing parameters of a script or function. We can use...
The terraform documentation states the...
...syntax as (grouping mode*. See: Grouping-Results). But this seems not the be the whole...
You can add this function to your .bashrc (or the configuration file of the shell your using instead): man() {
When a nginx reverse proxy complains about upstreams sending too big headers, tweaking the buffers responsibly can help to prevent...
A severe bug was found in ImageMagick by Bryan Gonzalez from Ocelot Team. It allows to embed the content of...
If you want to check the configuration of a running JVM process you can use jcmd. List the running processes...
If you have for e.g. a Java application which outputs multiline stack traces inside a container running in kubernetes you...
To measure the time of your HTTP request with curl, you can use the -w (--write-out) option:
We had a strange behaviour on one of our mariadb-servers: Everyday at around midnight we saw that the root...
When changing glibc versions, it's possible to end up with corrupt indexes in PostgreSQL. Are My Indexes Affected?
When changing the glibc version, it's possible that the upgrade also includes changes to how locales work.
There are cases where we have multiple exported resources that are identical. There are nodes that provide the same services...
In Puppet, there are some differences between defined and function types when it comes to code encapsulation. In most cases...
Nginx is capable of forwarding a unix socket to UDP backend servers. This is quite handy for load balance syslog...
The owner of a scheduled CI/CD pipeline in GitLab will always be notified if the pipeline fails. Follow these steps...
When using many or very long entries of MIME-types that shoudl be gziped in gzip_types directives in nginx...
If you use third party APT sources you might end up with unmaintained packages after removing the external source or...
When terragrunt is relaying information to input variables it's happening via environment variables. Depending on the size of the...
Instead of using Puppet exported resources you can use the puppetdb_query feature. This can result in more complex code...
How can I configure virtual IP's? There are two parameter to set up virtual ips in Keepalived: virtual_ipaddress...