[Freeipa-devel] [PATCHSET] Replica promotion patches

Tue Sep 22 08:45:27 UTC 2015

Hi,

On 9.9.2015 20:25, Simo Sorce wrote:
> On Wed, 2015-08-26 at 17:27 -0400, Simo Sorce wrote:
>> This patchset implements https://fedorahosted.org/freeipa/ticket/2888
>> and introduces a number of required  changes and dependencies to achieve
>> this goal.
>> This work requires the custodia project to securely transfer keys
>> between ipa servers.
>>
>> This work is not 100% complete, it still misses the ability to install
>> kra instances and the ability to install a CA (via ipa-ca-install) with
>> externally signed certs.
>>
>> However it is massive enough that warrants review and pushing, the resat
>> of the changes can be applied later as this work should not disrupt the
>> classic install methods.
>>
>> In order to build my previous patches (530-533) are needed as well as a
>> number of updated components.
>>
>> I used the following coprs for testing:
>> simo/jwcrypto
>> simo/custodia
>> abbra/sssd-kkdcproxy (for sssd 1.13.1)
>> lkrispen/389-ds-current (for 389 > 1.3.4.4)
>> vakwetu/dogtag_10.2.7_test_builds (for dogtag 10.2.7)
>> mkosek/freeipa-4.2-fedora-22 (misc)
>> fedora/updates-testing (python-gssapi 1.1.2)
>>
>> Ludwig's copr is necessary to have a functional DNA plugin in replicas,
>> eventually his patches should be committed in 389-ds-base 1.3.4.4 when
>> it will be released.
>>
>> We are aware of a dogtag bug https://fedorahosted.org/pki/ticket/1580
>> that may cause installation issues in some case (re-install of a
>> replica).
>>
>> The domain must be raised to level 1 in order to use replica promotion.
>>
>> In order to promote a replica the server must be first joined as a
>> regular client to the domain.
>>
>> This is the flow I usually use for testing:
>>
>> # ipa-client-install
>> # kinit admin
>> # ipa-replica-install --promote --setup-ca
>> <perform operations like add user, get keytabs, get certificates,
>> etc...>
>>
>> These patches are also available in this git tree rebnase on current
>> master:
>> https://fedorapeople.org/cgit/simo/public_git/freeipa.git/log/?h=custodia-review
>
> FYI: I rebased this branch on top of master and applied minor changes to
> one of the DNS patches. I also added the missing support to install KRA.
>
> DS 1.3.4.4 is also in Fedora updates testing, so ludwig's copr is not
> needed anymore.
>
> Dogtag's ticket is not fixed yet so running both --setup-ca and
> --setup-kra at the same time will still yield an error and install will
> fail.
>
> Please let me know if there are any major issues with this patchset, I'd
> like to push it to master and attack the remaining issues as add ons
> (install with external certs not supported yet for example)

So far I have only read through the code without running it (mostly).

"Remove unused arguments": ACK

"Simplify the install_replica_ca function": ACK

"IPA Custodia Daemon":

1) Instead of putting the code in "ipakeys" package, could you put it in 
"ipapython.keys"? This way it would be consistent with DNSSEC, which has 
binaries in daemons/dnssec/ and modules in ipapython/dnssec/.

2) Is it safe to create cn=custodia in update file only? Updates are 
executed late in ipa-server-install. Is is guaranteed that nothing will 
try to access cn=custodia before the updates are run?

(Nevermind, it is added to bootstrap-template.ldif 2 commits below.)

3) Shouldn't cn=custodia be created only when domain level >= 1?

4) pylint fails with:

daemons/ipa-custodia/ipakeys/kem.py:156: [E1002(super-on-old-class), 
IPAKEMKeys.__init__] Use of super on an old style class)
daemons/ipa-custodia/ipakeys/kem.py:178: [E1101(no-member), 
IPAKEMKeys.generate_server_keys] Instance of 'IPAKEMKeys' has no 
'config' member)
daemons/ipa-custodia/ipakeys/kem.py:187: [E1101(no-member), 
IPAKEMKeys.server_keys] Instance of 'IPAKEMKeys' has no 'config' member)

5) There are some PEP8 transgressions:

./daemons/ipa-custodia/ipakeys/kem.py:202:80: E501 line too long (82 > 
79 characters)
./daemons/ipa-custodia/ipakeys/kem.py:203:80: E501 line too long (82 > 
79 characters)
./daemons/ipa-custodia/ipakeys/store.py:33:1: E302 expected 2 blank 
lines, found 1
./daemons/ipa-custodia/setup.py:8:9: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:8:11: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:9:12: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:9:14: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:10:12: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:10:14: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:11:15: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:11:17: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:12:21: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:12:23: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:14:13: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:14:15: E251 unexpected spaces around 
keyword / parameter equals
./daemons/ipa-custodia/setup.py:16:1: W391 blank line at end of file

"Add Custodia Client code":

1) Is there any significance in having this in a separate commit? I 
would think it can be safely squashed in the previous commit.

2) There is one PEP8 transgression:

./daemons/ipa-custodia/ipakeys/client.py:45:5: E303 too many blank lines (2)

"Install ipa-custodia with the rest of ipa":

1) python-jwcrypto dependency is missing in the spec file.

2) I believe the daemons/ipa-custodia/* and 
install/share/bootstrap-template.ldif should be in the "IPA Custodia 
Daemon" commit. At the very least it would make reviews easier.

3) There is one PEP8 transgressions:

./ipaserver/install/custodiainstance.py:10:1: E302 expected 2 blank 
lines, found 1

"Require a DS version that has working DNA plugin": ACK

"Implement replica promotion functionality":

1) I think a RuntimeError or sys.exit with an error message would be 
better than NotImplementedError for the unimplemented options.

(Nevermind, these are removed in further commits.)

2) There is no domain level check when installing the replica from a 
replica file.

3) Instead of returning INSTALL_ERROR from promote_check() (which has no 
effect), raise an exception or call sys.exit().

4) The --promote option is redundant. You can safely decide whether to 
promote or not based on whether replica file was provided or not and the 
domain level of the remote server.

5) There are some PEP8 transgressions:

./ipaserver/install/cainstance.py:264:35: E231 missing whitespace after ','
./ipaserver/install/cainstance.py:264:49: E231 missing whitespace after ','
./ipaserver/install/cainstance.py:264:63: E231 missing whitespace after ','
./ipaserver/install/cainstance.py:267:49: E203 whitespace before ','
./ipaserver/install/dsinstance.py:258:80: E501 line too long (88 > 79 
characters)
./ipaserver/install/dsinstance.py:317:80: E501 line too long (90 > 79 
characters)
./ipaserver/install/dsinstance.py:457:5: E303 too many blank lines (2)
./ipaserver/install/installutils.py:1115:1: E302 expected 2 blank lines, 
found 1
./ipaserver/install/krbinstance.py:185:80: E501 line too long (85 > 79 
characters)
./ipaserver/install/krbinstance.py:186:80: E501 line too long (85 > 79 
characters)
./ipaserver/install/krbinstance.py:191:80: E501 line too long (92 > 79 
characters)
./ipaserver/install/server/replicainstall.py:412:1: E302 expected 2 
blank lines, found 1
./ipaserver/install/server/replicainstall.py:862:25: E128 continuation 
line under-indented for visual indent
./ipaserver/install/server/replicainstall.py:864:25: E128 continuation 
line under-indented for visual indent
./ipaserver/install/server/replicainstall.py:865:25: E128 continuation 
line under-indented for visual indent
./ipaserver/install/server/replicainstall.py:1014:13: E128 continuation 
line under-indented for visual indent
./ipaserver/install/server/replicainstall.py:1044:42: E231 missing 
whitespace after ','
./ipaserver/install/server/replicainstall.py:1125:5: E303 too many blank 
lines (2)

"Change DNS installer code to use passed in api": LGTM

"Allow ipa-replica-conncheck to use default creds": LGTM

"Add function to extract CA certs for install": LGTM

"Allow to setup the CA when promoting a replica":

1) There are some PEP8 transgressions:

./ipaserver/install/ca.py:35:13: E125 continuation line with same indent 
as next logical line
./ipaserver/install/cainstance.py:1488:5: E303 too many blank lines (2)
./ipaserver/install/replication.py:421:24: E231 missing whitespace after ','
./ipaserver/install/replication.py:421:35: E231 missing whitespace after ','
./ipaserver/install/replication.py:421:41: E231 missing whitespace after ','
./ipaserver/install/replication.py:422:24: E231 missing whitespace after ','
./ipaserver/install/replication.py:422:40: E231 missing whitespace after ','
./ipaserver/install/replication.py:422:46: E231 missing whitespace after ','
./ipaserver/install/replication.py:524:37: E128 continuation line 
under-indented for visual indent
./ipaserver/install/replication.py:524:38: E201 whitespace after '['
./ipaserver/install/replication.py:524:80: E501 line too long (187 > 79 
characters)
./ipaserver/install/replication.py:526:80: E501 line too long (106 > 79 
characters)
./ipaserver/install/replication.py:560:80: E501 line too long (86 > 79 
characters)
./ipaserver/install/replication.py:847:80: E501 line too long (81 > 79 
characters)
./ipaserver/install/replication.py:850:80: E501 line too long (89 > 79 
characters)
./ipaserver/install/replication.py:1761:80: E501 line too long (81 > 79 
characters)
./ipaserver/install/replication.py:1766:17: E128 continuation line 
under-indented for visual indent
./ipaserver/install/replication.py:1807:80: E501 line too long (89 > 79 
characters)

"Make checks for existing credentials reusable":

1) There are some PEP8 transgressions:

./ipaserver/install/installutils.py:1140:1: E302 expected 2 blank lines, 
found 1
./ipaserver/install/installutils.py:1192:25: E128 continuation line 
under-indented for visual indent
./ipaserver/install/installutils.py:1194:25: E128 continuation line 
under-indented for visual indent
./ipaserver/install/installutils.py:1195:25: E128 continuation line 
under-indented for visual indent

"Allow ipa-ca-install to use the new promotion code":

1) The --replica option is redundant. You can safely decide whether this 
is the first CA master or not based on information in cn=masters.

2) There are some PEP8 transgressions:

./ipaserver/install/dsinstance.py:173:26: E231 missing whitespace after ','
./ipaserver/install/dsinstance.py:173:40: E231 missing whitespace after ','

"Remove unused kra option": ACK

"Allow to install the KRA on a promoted server":

1) There are some PEP8 transgressions:

./ipaserver/install/ipa_kra_install.py:198:33: E127 continuation line 
over-indented for visual indent
./ipaserver/install/krainstance.py:55:1: E302 expected 2 blank lines, 
found 1
./ipaserver/install/krainstance.py:382:13: E128 continuation line 
under-indented for visual indent
./ipaserver/install/server/replicainstall.py:1073:18: E225 missing 
whitespace around operator
./ipaserver/install/server/replicainstall.py:1081:5: E303 too many blank 
lines (2)
./ipaserver/install/service.py:103:1: E302 expected 2 blank lines, found 1
./ipaserver/install/service.py:115:52: E203 whitespace before ','

Pushed first 2 commits to master: d8b1f42f171d666068583548315b4684e5f3c3a4

Honza

-- 
Jan Cholasta