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On Sat, 28 Jun 2014 11:36:11 +0200, J. Roeleveld wrote: |
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> I need a way to add dependencies to services which are provided by |
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> different servers. For instance, my mail server uses DNS to locate my |
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> LDAP server which contains the mail aliases. All these are running on |
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> different machines. Currently, I manually ensure these are all started |
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> in the correct sequence, I would like to automate this to the point |
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> where I can start all 3 servers at the same time and have the different |
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> services wait for the dependency services to be available even though |
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> they are on different systems. |
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> |
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> All the dependency systems in the init-systems I could find are all |
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> based on dependencies on the same server. Does anyone know of something |
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> that can already provide this type of dependencies? Or do I need to |
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> write something myself? |
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With systemd you can add ExecStartPre=/some/script to the service's unit |
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file where /some/script waits for the remote services to become available, |
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and possibly return an error if the service does not become available |
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within a set time. |
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-- |
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Neil Bothwick |
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I have a mind like a steel...uh...thingamajig... |
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