sentry-auth-ldap

A Django custom authentication backend for Sentry. This module extends the functionality of django-auth-ldap with Sentry specific features.

Features

• Users created by this backend are managed users. Managed fields are not editable through the Sentry account page.
• Users may be auto-added to an Organization upon creation.

Prerequisites

• Sentry < 21.9.0 should work with sentry-ldap-auth==2.9.0 (which is another project for legacy support)
• 21.9.0 ≤ Sentry < 23.6.0 should work with sentry-auth-ldap==21.9.11
• 23.6.0 ≤ Sentry < 24.8.0 should work with sentry-auth-ldap==23.6.0
• Sentry 24.8.0 and later are currently incompatible, please keep your version and wait for the adaptation update

Installation

To install, simply add sentry-auth-ldap to your requirements.txt for your Sentry environment (or pip install sentry-auth-ldap).

For container environment, because of the minimal base image, it may miss some dependencies.

You can easily enhance the image by sentry/enhance-image.sh script (need getsentry/self-hosted 22.6.0 or higher):

#!/bin/bash

requirements=(
'sentry-auth-ldap>=21.9.0'
# You can add other packages here, just like requirements.txt
)

# Install the dependencies of ldap
apt-get update
apt-get install -y --no-install-recommends build-essential libldap2-dev libsasl2-dev

pip install ${requirements[@]}

# Clean up to shrink the image size
apt-get purge -y --auto-remove build-essential
rm -rf /var/lib/apt/lists/*

# Support ldap over tls (ldaps://) protocol
mkdir -p /etc/ldap && echo "TLS_CACERT /etc/ssl/certs/ca-certificates.crt" > /etc/ldap/ldap.conf

Configuration

This module extends the django-auth-ldap and all the options it provides are supported (up to v1.2.x, at least).

To configure Sentry to use this module, add sentry_auth_ldap.backend.SentryLdapBackend to your AUTHENTICATION_BACKENDS in your sentry.conf.py, like this:

AUTHENTICATION_BACKENDS = AUTHENTICATION_BACKENDS + (
    'sentry_auth_ldap.backend.SentryLdapBackend',
)

Then, add any applicable configuration options. Depending on your environment, and especially if you are running Sentry in containers, you might consider using python-decouple so you can set these options via environment variables.

sentry-auth-ldap Specific Options

AUTH_LDAP_SENTRY_DEFAULT_ORGANIZATION = 'your-organization-slug'

Auto adds created user to the specified organization (matched by name) if it exists.

WARNING: There is an obsoleted setting named SENTRY_LDAP_DEFAULT_SENTRY_ORGANIZATION. It's used to set the default organization by display name, which is an unsuitable identifier.

AUTH_LDAP_SENTRY_ORGANIZATION_ROLE_TYPE = 'member'

Role type auto-added users are assigned. Valid values in a default installation of Sentry are 'member', 'admin', 'manager' & 'owner'. However, custom roles can also be added to Sentry, in which case these are also valid.

AUTH_LDAP_SENTRY_ORGANIZATION_GLOBAL_ACCESS = True

Whether auto-created users should be granted global access within the default organization.

AUTH_LDAP_SENTRY_SUBSCRIBE_BY_DEFAULT = False

Whether new users should be subscribed to any new projects by default. Disabling this is useful for large organizations where a subscription to each project might be spammy.

AUTH_LDAP_DEFAULT_EMAIL_DOMAIN = 'example.com'

Default domain to append to username as the Sentry user's e-mail address when the LDAP user has no mail attribute.

WARNING: There is an obsoleted setting named AUTH_LDAP_SENTRY_USERNAME_FIELD.
It could be replaced by AUTH_LDAP_USER_QUERY_FIELD and AUTH_LDAP_USER_ATTR_MAP which django-auth-ldap built-in.

Sentry Options

SENTRY_MANAGED_USER_FIELDS = ('email', 'first_name', 'last_name', 'password', )

Fields which managed users may not modify through the Sentry accounts view. Applies to all managed accounts.

Example Configuration

import ldap
from django_auth_ldap.config import LDAPSearch, GroupOfUniqueNamesType

AUTH_LDAP_SERVER_URI = 'ldap://my.ldapserver.com'
AUTH_LDAP_BIND_DN = ''
AUTH_LDAP_BIND_PASSWORD = ''
AUTH_LDAP_USER_QUERY_FIELD = 'username'

AUTH_LDAP_USER_SEARCH = LDAPSearch(
    'dc=domain,dc=com',
    ldap.SCOPE_SUBTREE,
    '(mail=%(user)s)',
)

AUTH_LDAP_USER_ATTR_MAP = {
    'username': 'uid',
    'name': 'cn',
    'email': 'mail'
}

AUTH_LDAP_MAIL_VERIFIED = True

AUTH_LDAP_GROUP_SEARCH = LDAPSearch(
    '',
    ldap.SCOPE_SUBTREE,
    '(objectClass=groupOfUniqueNames)'
)

AUTH_LDAP_GROUP_TYPE = GroupOfUniqueNamesType()
AUTH_LDAP_REQUIRE_GROUP = None
AUTH_LDAP_DENY_GROUP = None
AUTH_LDAP_FIND_GROUP_PERMS = False
AUTH_LDAP_CACHE_GROUPS = True
AUTH_LDAP_GROUP_CACHE_TIMEOUT = 3600

AUTH_LDAP_SENTRY_DEFAULT_ORGANIZATION = 'your-organization-slug'
AUTH_LDAP_SENTRY_ORGANIZATION_ROLE_TYPE = 'member'
AUTH_LDAP_SENTRY_GROUP_ROLE_MAPPING = {
    'owner': ['sysadmins'],
    'admin': ['devleads'],
    'member': ['developers', 'seniordevelopers']
}
AUTH_LDAP_SENTRY_ORGANIZATION_GLOBAL_ACCESS = True

AUTHENTICATION_BACKENDS = AUTHENTICATION_BACKENDS + (
    'sentry_auth_ldap.backend.SentryLdapBackend',
)

# Optional logging for diagnostics.
LOGGING['disable_existing_loggers'] = False
import logging
logger = logging.getLogger('django_auth_ldap')
logger.setLevel(logging.DEBUG)

Troubleshooting

Work with LDAPS protocol (SSL/TLS)

Put the below content into /etc/ldap/ldap.conf, otherwise the certificate won't be trusted.

TLS_CACERT /etc/ssl/certs/ca-certificates.crt

If your certificate was issued by a private CA, you should change the path.

Don't use OCSP-Must-Staple certificate (SSL/TLS)

Please don't use OCSP-Must-Staple certificate with LDAPS.

Some ldap servers (eg. OpenLDAP) don't support stapling OCSP response. So it will cause the handshake failed.