diff options
Diffstat (limited to 'cloudinit/config/cc_bootcmd.py')
| -rw-r--r-- | cloudinit/config/cc_bootcmd.py | 87 |
1 files changed, 58 insertions, 29 deletions
diff --git a/cloudinit/config/cc_bootcmd.py b/cloudinit/config/cc_bootcmd.py index 9c0476af..233da1ef 100644 --- a/cloudinit/config/cc_bootcmd.py +++ b/cloudinit/config/cc_bootcmd.py @@ -3,45 +3,73 @@ # # Author: Scott Moser <scott.moser@canonical.com> # Author: Juerg Haefliger <juerg.haefliger@hp.com> +# Author: Chad Smith <chad.smith@canonical.com> # # This file is part of cloud-init. See LICENSE file for license information. -""" -Bootcmd -------- -**Summary:** run commands early in boot process - -This module runs arbitrary commands very early in the boot process, -only slightly after a boothook would run. This is very similar to a -boothook, but more user friendly. The environment variable ``INSTANCE_ID`` -will be set to the current instance id for all run commands. Commands can be -specified either as lists or strings. For invocation details, see ``runcmd``. - -.. note:: - bootcmd should only be used for things that could not be done later in the - boot process. - -**Internal name:** ``cc_bootcmd`` - -**Module frequency:** per always - -**Supported distros:** all - -**Config keys**:: - - bootcmd: - - echo 192.168.1.130 us.archive.ubuntu.com > /etc/hosts - - [ cloud-init-per, once, mymkfs, mkfs, /dev/vdb ] -""" +"""Bootcmd: run arbitrary commands early in the boot process.""" import os +from textwrap import dedent +from cloudinit.config.schema import ( + get_schema_doc, validate_cloudconfig_schema) from cloudinit.settings import PER_ALWAYS from cloudinit import temp_utils from cloudinit import util frequency = PER_ALWAYS +# The schema definition for each cloud-config module is a strict contract for +# describing supported configuration parameters for each cloud-config section. +# It allows cloud-config to validate and alert users to invalid or ignored +# configuration options before actually attempting to deploy with said +# configuration. + +distros = ['all'] + +schema = { + 'id': 'cc_bootcmd', + 'name': 'Bootcmd', + 'title': 'Run arbitrary commands early in the boot process', + 'description': dedent("""\ + This module runs arbitrary commands very early in the boot process, + only slightly after a boothook would run. This is very similar to a + boothook, but more user friendly. The environment variable + ``INSTANCE_ID`` will be set to the current instance id for all run + commands. Commands can be specified either as lists or strings. For + invocation details, see ``runcmd``. + + .. note:: + bootcmd should only be used for things that could not be done later + in the boot process."""), + 'distros': distros, + 'examples': [dedent("""\ + bootcmd: + - echo 192.168.1.130 us.archive.ubuntu.com > /etc/hosts + - [ cloud-init-per, once, mymkfs, mkfs, /dev/vdb ] + """)], + 'frequency': PER_ALWAYS, + 'type': 'object', + 'properties': { + 'bootcmd': { + 'type': 'array', + 'items': { + 'oneOf': [ + {'type': 'array', 'items': {'type': 'string'}}, + {'type': 'string'}] + }, + 'additionalItems': False, # Reject items of non-string non-list + 'additionalProperties': False, + 'minItems': 1, + 'required': [], + 'uniqueItems': True + } + } +} + +__doc__ = get_schema_doc(schema) # Supplement python help() + def handle(name, cfg, cloud, log, _args): @@ -50,13 +78,14 @@ def handle(name, cfg, cloud, log, _args): " no 'bootcmd' key in configuration"), name) return + validate_cloudconfig_schema(cfg, schema) with temp_utils.ExtendedTemporaryFile(suffix=".sh") as tmpf: try: content = util.shellify(cfg["bootcmd"]) tmpf.write(util.encode_text(content)) tmpf.flush() - except Exception: - util.logexc(log, "Failed to shellify bootcmd") + except Exception as e: + util.logexc(log, "Failed to shellify bootcmd: %s", str(e)) raise try: |