27. Saving output streams

27.1. Description

Since version 4.8.0 cdist, by default, saves output streams to local cache. Saving output streams is implemented because important information was lost during a config run, hidden in all other output. Now all created output is bound to the context where it was produced.

Saving output streams include stdout and stderr of init manifest, remote commands and for each object stdout and stderr of manifest, gencode-* and code-*. Output stream files are created only if some output is produced. For more info on these cache files see Local cache overview.

Also, in case of an error, cdist can now exit and show all information it has about the error.

For example:

$ ./bin/cdist config -v -i ~/.cdist/manifest/init-output-streams $(cat ~/ungleich/data/opennebula-debian9-test )
INFO: 185.203.112.42: Starting configuration run
INFO: 185.203.112.42: Processing __myline/test
ERROR: 185.203.112.42: Command failed: '/bin/sh -e /tmp/tmpow6cwemh/75ee6a79e32da093da23fe4a13dd104b/data/object/__myline/test/.cdist-kisrqlpw/code-local'
return code: 1
---- BEGIN stdout ----
---- END stdout ----

Error processing object '__myline/test'
========================================
name: __myline/test
path: /tmp/tmpow6cwemh/75ee6a79e32da093da23fe4a13dd104b/data/object/__myline/test/.cdist-kisrqlpw
source: /home/darko/.cdist/manifest/init-output-streams
type: /tmp/tmpow6cwemh/75ee6a79e32da093da23fe4a13dd104b/data/conf/type/__myline

---- BEGIN manifest:stderr ----
myline manifest stderr

---- END manifest:stderr ----

---- BEGIN gencode-remote:stderr ----
test gencode-remote error

---- END gencode-remote:stderr ----

---- BEGIN code-local:stderr ----
error

---- END code-local:stderr ----

ERROR: cdist: Failed to configure the following hosts: 185.203.112.42

Upon successful run execution state is saved to local cache and temporary directory is removed. In case of an error temporary directory is not removed and can be further discovered.

There is also an option -S/--disable-saving-output-streams for disabling saving output streams. In this case error reporting can look like this:

$ ./bin/cdist config -v -S -i ~/.cdist/manifest/init-output-streams $(cat ~/ungleich/data/opennebula-debian9-test )
INFO: 185.203.112.42: Starting configuration run
test stdout output streams
test stderr output streams
myline manifest stdout
myline manifest stderr
test gencode-remote error
INFO: 185.203.112.42: Processing __myline/test
error
ERROR: 185.203.112.42: Command failed: '/bin/sh -e /tmp/tmpzomy0wis/75ee6a79e32da093da23fe4a13dd104b/data/object/__myline/test/.cdist-n566pqut/code-local'
return code: 1
---- BEGIN stdout ----
---- END stdout ----

Error processing object '__myline/test'
========================================
name: __myline/test
path: /tmp/tmpzomy0wis/75ee6a79e32da093da23fe4a13dd104b/data/object/__myline/test/.cdist-n566pqut
source: /home/darko/.cdist/manifest/init-output-streams
type: /tmp/tmpzomy0wis/75ee6a79e32da093da23fe4a13dd104b/data/conf/type/__myline


ERROR: cdist: Failed to configure the following hosts: 185.203.112.42