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Performing upgrades doesn't help if the outdated version is still
running.
Use needrestart to determine if an application is running with an
outdated version if itself or a library or the system is running without
an outdated kernel.
Signed-off-by: Tobias Wiese <tobias@tobiaswiese.com>
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Monitor whether there are systemd units in a failed state.
Signed-off-by: Tobias Wiese <tobias@tobiaswiese.com>
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By default every host has a nullmailer installed (unless it has some
other mailserver), so monitor the mailq of nullmailer unless some other
mailserver (or "none") is explicitly defined.
Signed-off-by: Tobias Wiese <tobias@tobiaswiese.com>
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Add monitoring to the mailserver.
Alos adds services for the mailq, smtp and imap
Signed-off-by: Tobias Wiese <tobias@tobiaswiese.com>
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Tries to connect to a database in the postgresql cluster.
Signed-off-by: Tobias Wiese <tobias@tobiaswiese.com>
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Check for basic node health including ping, disk and swap.
Also check with the package manager, that the system is up to date.
Signed-off-by: Tobias Wiese <tobias@tobiaswiese.com>
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