Set node label in Jenkins pipeline

Question

Is it possible to set a label instead of a name for nodes Groovy? We want to define labels outside the script to easily access them from the Jenkins Dashboard.

Idea: Instead of:

---

Groovy Script

node('Slave_1 || Slave_2'){ echo 'Hello world' }

---

We want something like this:

---

Pipeline configuration

Node Label Name:     slaveGroup
Node Label Value:    Slave_1 || Slave_2

Groovy Script

node(slaveGroup){echo 'Hello world'}

Or is it possible to use the labels you can set in slave configuration directly in the Groovy script?

Answer 1

Just found out that the Pipline Syntax (Generator) gives this option:

Valid Operators

The following operators are supported, in the order of precedence.

(expr)

parenthesis

!expr

negation

expr&&expr

and

expr||expr

or

a -> b

"implies" operator. Equivalent to !a|b. For example, windows->x64 could be thought of as "if run on a Windows slave, that slave must be 64bit." It still allows Jenkins to run this build on linux.

a <-> b

"if and only if" operator. Equivalent to a&&b || !a&&!b. For example, windows<->sfbay could be thought of as "if run on a Windows slave, that slave must be in the SF bay area, but if not on Windows, it must not be in the bay area."

All operators are left-associative (i.e., a->b->c <-> (a->b)->c ) An expression can contain whitespace for better readability, and it'll be ignored.

Label names or slave names can be quoted if they contain unsafe characters. For example, "jenkins-solaris (Solaris)" || "Windows 2008"

More in the documentation.