Philipp Kahr Philipp Kahr - 1 year ago 180
Python Question

Jinja2 Loops with Saltstack

I experience a issue with my jinja2 template when using for loops. I guess I'm just to dumb to get the right syntax.

{% for options in salt['pillar.get']('nexus.file.nexus.vmoptions') %}
//trying to access a yaml list (posted below)`
{% for addjavavariables in options %}
//trying to get the lists out of the options
{{ nexus.file.nexus.vmoptions.addjavavariables[0] }}
//trying to write every single line from my list
{{ addjavavariables }}:
- {{ addjavavariables }}
{% endfor %}
{% endfor %}


The YAML looks like this.:


nexus:
file:
nexus:
vmoptions:
addjavavariables:
- 'Xms1200M'
- 'Xmx1200M'
- 'XX:MaxDirectMemorySize=2G'
- 'XX:+UnlockDiagnosticVMOptions'
- 'XX:+UnsyncloadClass'
- 'XX:+LogVMOutput'
- 'XX:LogFile=../sonatype-work/nexus3/log/jvm.log'
- 'Djava.net.preferIPv4Stack=true'
- 'Dkaraf.home=.'
- 'Dkaraf.base=.'
- 'Dkaraf.etc=etc/karaf'
- 'Djava.util.logging.config.file=etc/karaf/java.util.logging.properties'
- 'Dkaraf.data=../sonatype-work/nexus3'
- 'Djava.io.tmpdir=../sonatype-work/nexus3/tmp'
- "Dkaraf.s'tartLocalConsole=false"
- 'Djava.util.prefs.userRoot=/home/nexus/.java'



Final file should looks like

-Xms1200M
-Xmx1200M
-XX:MaxDirectMemorySize=2G
-XX:+UnlockDiagnosticVMOptions
-XX:+UnsyncloadClass
-XX:+LogVMOutput
-XX:LogFile=../sonatype-work/nexus3/log/jvm.log
-Djava.net.preferIPv4Stack=true
-Dkaraf.home=.
-Dkaraf.base=.
-Dkaraf.etc=etc/karaf
-Djava.util.logging.config.file=etc/karaf/java.util.logging.properties
-Dkaraf.data=../sonatype-work/nexus3
-Djava.io.tmpdir=../sonatype-work/nexus3/tmp
-Dkaraf.s'tartLocalConsole=false
-Djava.util.prefs.userRoot=/home/nexus/.java


my problem is, that I don't get anything into the file. It also won't go into the loop at all. Can anybody give me a hint, how I can put all the items in the list with a starting dash into the file?

Answer Source

The path separator for pillar.get is :, not ., so you should go with salt['pillar.get']('nexus:file:nexus:vmoptions').
But you could also simply use pillar['nexus']['file']['nexus']['vmoptions']

A weird thing is that you have 2 for loops but only 1 list to iterate over. Is there other keys in the nexus:file:nexus:vmoptions dict?

To get the required result, I would go with:

{% for addjavavariable in salt['pillar.get']('nexus:file:nexus:vmoptions:addjavavariables', []) %}
-{{ addjavavariable }}
{% endfor %}
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