vertical-align is hard. Have you ever wanted to vertically center an icon with text? This usually means "vertically align...

Sometimes, the rails dev server doesn't terminate properly. This can for example happen when the dev server runs in...

Du weißt, welcher Linux Service für das starten/stoppen/löschen von Containern zuständig ist. Wie wird die Authentifizierung für Requests...

Du verstehst, welche Aufgaben der Kubernetes API Server übernimmt. Du weißt, wie der API Server in das Management des...

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...

phili.pe

The linked article found a simple way to rewrite legacy git aliases to make them work with differently named default...

DevOps Curriculum

Mit SQL spricht man mit relationalen Datenbanken. Ziele Verstehe die folgenden SQL Befehle SELECT WHERE ORDER INNER JOIN, LEFT JOIN...

DevOps Curriculum

Du musst kein Netzwerkspezialist sein oder iptables in- und auswendig kennen. Du solltest aber die Grundlagen verstanden haben. Spätestens wenn...

To delete a specific redis-DB you need to use the FLUSHDB-command in combination with the SELECT-command. For...

bundler.io

Bundler so far ignored the version specified under BUNDLED_WITH in the Gemfile.lock. This had two annoying consequences:

DevOps Curriculum

In dieser Card geht es um Netzwerke in Kubernetes. Schau noch einmal kurz auf Netzwerke zurück und schau dir die...

Our CI setup frequently sees this error while running yarn install: yarn install v1.22.19 [1/4] Resolving packages... [2/4] Fetching packages...

In diesem Kapitel sprechen wir darüber wie Container eigentlich funktionieren. Es ist zwar nicht zwingend erfoderlich um diese zu verwenden...

Kubernetes ist der de-facto Standard zum Orchestrieren von Container Workloads. Sowohl On Premise als auch in der Cloud wird...

makandra dev

In a Jasmine spec you want to spy on a function that is imported by the code under test. This...

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...

The Oracle mysql client has an odd behavior if your server uses latin1 as default character-set-server. Command

By default subscript ( ) and superscript ( ) tags are styled with vertical-align: sub, respectively vertical-align: super by most browsers.

Nginx is capable of forwarding a unix socket to UDP backend servers. This is quite handy for load balance syslog...