99 lines
3 KiB
Text
99 lines
3 KiB
Text
cdist (=opposite to ccollect)
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aka puppet don right
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- reuse of unix, no need for perl^Wruby
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- shell
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what is puppet?
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A configuration deployment assistant,
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a DSL that allows you define the objectives.
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A webserver with fileserver capabilities.
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A client based scheduled polling infrastructure.
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What do I need from puppet?
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- handling of package managers
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- Modules: Nice to put stuff together
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- and reuse
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- [LIBRARY] All the helper types like
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- file
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- ssh_keys
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- package
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- service
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- user
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- [CONDITIONS] facter is cool
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- [PORTABILITY] clients for every unix
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- mostly ruby + facter in puppet
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- the DSL
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- with many bugs
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- templates
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- Client/Server approach is nice to have
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- Clients only get the part of the documentation, that's
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relevant to them
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What do I miss from puppet?
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- speed
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- elegance
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- clean design
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- documentation
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- the "no surprise" factor
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- easy to use "data memory" (i.e. external ressources)
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- easy integration into installation process
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- copy identity to master
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- multi master setups
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- development configurations / tests
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- editing of configuration files
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- similar to cfengine
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- replace bug squasher with bug avoidance
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- qmail did not need one either
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- push infrastructure
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Simple stuff done by Unix[notm]
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- DSL: Shell!
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- gives if, else and EVEN elsif for free!
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- and case
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- and and and
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- and there's no os (solaris doesn't count) without a usable /bin/sh
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- cdist defines what you can use
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- you _can_ use os specific stuff
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- but it's ugly and you shoot into your own foot
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- "manifests" (use the same name here?) will be run/sourced
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- inheritance possible via sourcing
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- cdist-lib always preloaded
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- library == functions?
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- version control via git
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- file distribution via ssh
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- authentication via ssh
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- dumb clients, similar to manifest compile in puppet
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- clients just execute commands
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- dependencies via make?
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- how to ensure sigletons / conflicting definitions?
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file { "/a":
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ensure => present,
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file { "/a":
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ensure => absent,
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- matching on explored items, not only on host name?
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- match function in host? [optional]
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- file source:
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- relative to specification
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- or absolute
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Architecture
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Implementation
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"cdist-server"
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-> called by cron?
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-> no need to reimplement scheduling
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"cdist-explore" (facter replacement)
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-> running on the client
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