cloud-init

module cc_apt_configure must make sure gnupg is installed

Bug #1855432 reported by do3meli on 2019-12-06

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	cloud-init	Expired	Medium	Unassigned

Bug Description

when using the module cc_apt_configure we need to make sure that gnupg is installed before using apt-key add to add a certain apt key.

The most recent debian 10 cloud image from https://cdimage.debian.org/cdimage/openstack/10.2.0/ is for example not really happy when using the below config:

#cloud-config
apt:
  http_proxy: http://10.0.0.2:3128/
  https_proxy: http://10.0.0.2:3128/
  sources:
    saltstack:
      source: "deb http://repo.saltstack.com/py3/debian/10/amd64/latest buster main"
      key: |
                -----BEGIN PGP PUBLIC KEY BLOCK-----
                Version: GnuPG v2

                mQENBFOpvpgBCADkP656H41i8fpplEEB8IeLhugyC2rTEwwSclb8tQNYtUiGdna9
                m38kb0OS2DDrEdtdQb2hWCnswxaAkUunb2qq18vd3dBvlnI+C4/xu5ksZZkRj+fW
                tArNR18V+2jkwcG26m8AxIrT+m4M6/bgnSfHTBtT5adNfVcTHqiT1JtCbQcXmwVw
                WbqS6v/LhcsBE//SHne4uBCK/GHxZHhQ5jz5h+3vWeV4gvxS3Xu6v1IlIpLDwUts
                kT1DumfynYnnZmWTGc6SYyIFXTPJLtnoWDb9OBdWgZxXfHEcBsKGha+bXO+m2tHA
                gNneN9i5f8oNxo5njrL8jkCckOpNpng18BKXABEBAAG0MlNhbHRTdGFjayBQYWNr
                YWdpbmcgVGVhbSA8cGFja2FnaW5nQHNhbHRzdGFjay5jb20+iQE4BBMBAgAiBQJT
                qb6YAhsDBgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRAOCKFJ3le/vhkqB/0Q
                WzELZf4d87WApzolLG+zpsJKtt/ueXL1W1KA7JILhXB1uyvVORt8uA9FjmE083o1
                yE66wCya7V8hjNn2lkLXboOUd1UTErlRg1GYbIt++VPscTxHxwpjDGxDB1/fiX2o
                nK5SEpuj4IeIPJVE/uLNAwZyfX8DArLVJ5h8lknwiHlQLGlnOu9ulEAejwAKt9CU
                4oYTszYM4xrbtjB/fR+mPnYh2fBoQO4d/NQiejIEyd9IEEMd/03AJQBuMux62tjA
                /NwvQ9eqNgLw9NisFNHRWtP4jhAOsshv1WW+zPzu3ozoO+lLHixUIz7fqRk38q8Q
                9oNR31KvrkSNrFbA3D89uQENBFOpvpgBCADJ79iH10AfAfpTBEQwa6vzUI3Eltqb
                9aZ0xbZV8V/8pnuU7rqM7Z+nJgldibFk4gFG2bHCG1C5aEH/FmcOMvTKDhJSFQUx
                uhgxttMArXm2c22OSy1hpsnVG68G32Nag/QFEJ++3hNnbyGZpHnPiYgej3FrerQJ
                zv456wIsxRDMvJ1NZQB3twoCqwapC6FJE2hukSdWB5yCYpWlZJXBKzlYz/gwD/Fr
                GL578WrLhKw3UvnJmlpqQaDKwmV2s7MsoZogC6wkHE92kGPG2GmoRD3ALjmCvN1E
                PsIsQGnwpcXsRpYVCoW7e2nW4wUf7IkFZ94yOCmUq6WreWI4NggRcFC5ABEBAAGJ
                AR8EGAECAAkFAlOpvpgCGwwACgkQDgihSd5Xv74/NggA08kEdBkiWWwJZUZEy7cK
                WWcgjnRuOHd4rPeT+vQbOWGu6x4bxuVf9aTiYkf7ZjVF2lPn97EXOEGFWPZeZbH4
                vdRFH9jMtP+rrLt6+3c9j0M8SIJYwBL1+CNpEC/BuHj/Ra/cmnG5ZNhYebm76h5f
                T9iPW9fFww36FzFka4VPlvA4oB7ebBtquFg3sdQNU/MmTVV4jPFWXxh4oRDDR+8N
                1bcPnbB11b5ary99F/mqr7RgQ+YFF0uKRE3SKa7a+6cIuHEZ7Za+zhPaQlzAOZlx
                fuBmScum8uQTrEF5+Um5zkwC7EXTdH1co/+/V/fpOtxIg4XO4kcugZefVm5ERfVS
                MA==
                =dtMN
                -----END PGP PUBLIC KEY BLOCK-----

It will then throw the following errors:

[ 21.870823] cloud-init[494]: 2019-12-06 11:26:16,967 - cc_apt_configure.py[ERROR]: failed to add apt GPG Key to apt keyring
[ 21.875126] cloud-init[494]: Traceback (most recent call last):
[ 21.877629] cloud-init[494]: File "/usr/lib/python3/dist-packages/cloudinit/config/cc_apt_configure.py", line 551, in add_apt_key_raw
[ 21.881435] cloud-init[494]: util.subp(['apt-key', 'add', '-'], data=key.encode(), target=target)
[ 21.884155] cloud-init[494]: File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 2027, in subp
[ 21.886831] cloud-init[494]: cmd=args)
[ 21.888611] cloud-init[494]: cloudinit.util.ProcessExecutionError: Unexpected error while running command.
[ 21.891311] cloud-init[494]: Command: ['apt-key', 'add', '-']
[ 21.893090] cloud-init[494]: Exit code: 255
[ 21.894566] cloud-init[494]: Reason: -
[ 21.895819] cloud-init[494]: Stdout:
[ 21.897109] cloud-init[494]: Stderr: E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation
[ 21.899870] cloud-init[494]: 2019-12-06 11:26:16,973 - util.py[WARNING]: Running module apt-configure (<module 'cloudinit.config.cc_apt_configure' from '/usr/lib/python3/dist-packages/cloudinit/config/cc_apt_configure.py'>) failed