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Installing packages

Installing packages#

TPA installs a batch of non-Postgres-related packages early during the deployment, then all Postgres-related packages together, and then packages for optional components separately. These instructions are for installing packages like sysstat or strace, which have no dependency on Postgres packages.

You can add entries to packages under cluster_vars or a particular instance’s vars in config.yml :

cluster_vars:
  packages:
    common:
      - pkg1
      - pkg2
    Debian:
      - debpkg1
    RedHat:
      - rhpkg1
      - rhpkg2
    Ubuntu:
      - ubpkg1
    SLES:
      - slespkg1

In this example, TPA installs its own list of default_packages , the packages listed under packages.common on every instance, and the remaining distribution-specific packages based on the distribution the instance is running. If any of these packages isn’t available, the deployment fails.

Don’t list any packages that depend on Postgres. Use extra_postgres_packages

instead.

Optional packages#

You can specify a list of optional_packages that can be installed. They will be installed if they’re available and ignored otherwise. As with the other settings, the common entries apply to every instance, whereas any other lists apply only to instances running the relevant distribution.

optional_packages:
  common:
    - pkg1
    - pkg2
  Debian:
    - debpkg4

Removing packages#

You can specify a list of unwanted_packages to remove if they’re installed.

unwanted_packages:
  common:
    - badpkg1
  Ubuntu:
    - badpkg2
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