Deployment failed, but the status is 'Ready'

[Ekaterina Chernova]

1) Provide bad dns server in config file
2) Deploy apache server

Actual result

There are no errors in deployment (engine log)
But agent-log file contains the following

 Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/InRelease

W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-updates/InRelease

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/InRelease

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/Release.gpg Could not resolve 'security.ubuntu.com'

W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/Release.gpg Could not resolve 'archive.ubuntu.com'

W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-updates/Release.gpg Could not resolve 'archive.ubuntu.com'

W: Some index files failed to download. They have been ignored, or old ones used instead.
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/a/apr/libapr1_1.5.0-1_amd64.deb Could not resolve 'archive.ubuntu.com'

E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/a/apr-util/libaprutil1_1.5.3-1_amd64.deb Could not resolve 'archive.ubuntu.com'

E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/a/apr-util/libaprutil1-dbd-sqlite3_1.5.3-1_amd64.deb Could not resolve 'archive.ubuntu.com'

E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/a/apr-util/libaprutil1-ldap_1.5.3-1_amd64.deb Could not resolve 'archive.ubuntu.com'

E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/a/apache2/apache2-bin_2.4.7-1ubuntu4.1_amd64.deb Could not resolve 'security.ubuntu.com'

E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/a/apache2/apache2-data_2.4.7-1ubuntu4.1_all.deb Could not resolve 'security.ubuntu.com'

E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/a/apache2/apache2_2.4.7-1ubuntu4.1_amd64.deb Could not resolve 'security.ubuntu.com'

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

during executing apt-get install

[Ekaterina Chernova (efedorova)]

CI logs approve it https://review.openstack.org/#/c/155397/7

[Dmytro Dovbii (ddovbii)]

Unable to resolve it in clear way now. To prevent such errors we need to make a big refactoring of all our scripts by dividing scripts on small logical parts and adding checks verifying the command was successful in places where it is necessary.

https://blueprints.launchpad.net/murano-apps/+spec/refactor-apps-scripts