I've been trying to look up more on this but it seems like a dead end. In fact, I see a few more question where people are using dynamic inventory and multiple groups facing similar issues. I realized this isn't the only place I'll have an issue, these kind of issues will also show up when working with group_vars.
Is this not a recommended way of doing things? I've found atleast 3 other questions on similar lines. - http://www.mattzone.com/ansible/ansible_20150821.html (by tupty) - https://groups.google.com/forum/#!topic/Ansible-project/QuqXUV_BEMM - https://www.mail-archive.com/ansible-project@googlegroups.com/msg08024.html Is there a better way to handle grouping of servers? Is there anything in the documentation or best practices that I've missed? On Mon, Oct 26, 2015 at 12:13 PM, Mehul Ved <mehul.n....@gmail.com> wrote: > Hi Bryan, > Here's what I get when I run the command > > $ RAX_CREDS_FILE=.raxpub ansible web -i inventory/rax.py -m debug -a > "msg={{ hostvars[groups['beta']|intersect(groups['db'])[0]]['db_port'] }}" > --limit beta -v > beta_web1 | FAILED => Failed to template msg={{ > hostvars[groups['beta']|intersect(groups['db'])[0]]['db_port'] }}: template > error while templating string: expected token ',', got '[' > > $ RAX_CREDS_FILE=.raxpub ansible web -i inventory/rax.py -m debug -a > "msg={{ hostvars[groups['beta']|intersect(groups['db'])[1]]['db_port'] }}" > --limit beta -v > beta_web1 | FAILED => Failed to template msg={{ > hostvars[groups['beta']|intersect(groups['db'])[1]]['db_port'] }}: template > error while templating string: expected token ',', got '[' > > $ RAX_CREDS_FILE=.raxpub ansible web -i inventory/rax.py -m debug -a > "msg={{ hostvars[groups['beta']|intersect(groups['db'])[2]]['db_port'] }}" > --limit beta -v > beta_web1 | FAILED => Failed to template msg={{ > hostvars[groups['beta']|intersect(groups['db'])[2]]['db_port'] }}: template > error while templating string: expected token ',', got '[' > > notice the increment in the index but it still gets the same error. > > If I omit the index to see what is there, > > $ RAX_CREDS_FILE=.raxpub ansible web -i inventory/rax.py -m debug -a > "msg={{ hostvars[groups['beta']|intersect(groups['db'])]['db_port'] }}" > --limit beta -v > beta_web1 | FAILED => One or more undefined variables: > ansible.runner.HostVars object has no element [u'beta_db1'] > > I'm not sure what I'm missing out here. > > On Sat, Oct 24, 2015 at 12:48 AM, Brian Coca <bc...@ansible.com> wrote: > >> actually [u'beta_db1'] is a list with 1 string item inside, the debug >> construct you are using is mixing templated and non templated vars, >> that won't work also you seem to have mismatched list indecies. >> >> debug: msg="{{hostvars[group['beta'] | >> intersection(groups['db'])[0]]['db_port']}}" >> or >> debug: var=hostvars[group['beta'] | >> intersection[groups['db'])[0]]['db_port'] >> >> On Fri, Oct 23, 2015 at 6:09 AM, Mehul Ved <mehul.n....@gmail.com> wrote: >> > I have 4 machines on rackspace - two sets of machines, for production >> and >> > beta. Each set has a web server and db server. >> > Here's what the metadata for each machine would look like >> > >> > metadata: { >> > group: web, >> > set: production >> > } >> > >> > metadata: { >> > group: db, >> > set: production >> > } >> > >> > metadata: { >> > group: web, >> > set: beta >> > } >> > >> > metadata: { >> > group: db, >> > set: beta >> > } >> > >> > While deploying to machine set beta and group web, I need to get certain >> > variables from machine set beta and group db. I have been trying various >> > ways to ensure I get the right machine. I got a pointer from somebody >> on IRC >> > to try intersection filter to get the correct machine from the group. >> > >> > So, I did this >> > debug: var='groups['beta'] | intersection(groups['db'])' >> > >> > The above gives me a string with machine name >> > "[u'beta_db1']" >> > >> > I am unable to use it as shown in variables example >> > debug: var='hostvars[{{ group['beta'] | intersection['groups['db']) >> > }}][0]]['db_port'] >> > >> > It returns the result as >> > "hostvars[[u'beta_db'][0]]['db_port']" >> > >> > I intend to use this in my vars/main.yml as >> > >> > app_db_port: <the variable defined for beta db machine> >> > >> > Am I in the right direction? If so how to handle the issue where >> hostvars >> > needs a list but intersection returns a string? Or is there a better >> way to >> > achieve what I want? >> > >> > >> > -- >> > With Regards, >> > Mehul Ved >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups >> > "Ansible Project" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> an >> > email to ansible-project+unsubscr...@googlegroups.com. >> > To post to this group, send email to ansible-project@googlegroups.com. >> > To view this discussion on the web visit >> > >> https://groups.google.com/d/msgid/ansible-project/CADTL0oYm9Uziv4em%3DYgSxY7SR3MG72yUme%2BJmfy0Q8%3DsXCG2Zg%40mail.gmail.com >> . >> > For more options, visit https://groups.google.com/d/optout. >> >> >> >> -- >> Brian Coca >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Ansible Project" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to ansible-project+unsubscr...@googlegroups.com. >> To post to this group, send email to ansible-project@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/ansible-project/CAJ5XC8m_gsuYNH2hE74v5AVnpO2XquUf6aODzvRpToDWf6mfxg%40mail.gmail.com >> . >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > With Regards, > Mehul Ved > -- With Regards, Mehul Ved -- You received this message because you are subscribed to the Google Groups "Ansible Project" group. 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