Ansible Role: Nexus 3 OSS

This role installs and configures Nexus Repository Manager OSS version 3.x.

All configuration can be updated by re-running the role, except for the blobstores related settings, which are immutable in nexus.

History / Credits

This role is a fork of ansible-nexus3-oss by @savoirfairelinux after they announced end of maintenance. You can have a look at the following tickets in the original repository for explanations:

We would like to thank the original authors for the work done.

Requirements

Minimum ansible version 2.2 (see meta/main.yml). Due to the use of the ansible synchronize module you will need version 2.3 for tests with molecule (using docker containers).
This role is tested through travis CI only on CentOS 7 + Ubuntu 16.04 (Xenial) for time being
Java 8 (mandatory)
- Oracle Java 8 is the official supported platform by Sonatype
- openjdk8 is know to work and is used for deployment test on travis on the corresponding platform docker images.
- For more information see nexus3 system requirements
Apache HTTPD (optional)
- Used to setup a SSL reverse-proxy
- The following modules must be enabled in your configuration: mod_ssl, mod_rewrite, mod_proxy, mod_proxy_http, mod_headers.

(see Dependencies section below for matching roles on galaxy)

Role Variables

Ansible variables, along with the default values (see default/main.yml) :

General variables

    nexus_version: '3.12.0-01'
    nexus_timezone: 'UTC'
    nexus_package: "nexus-{{ nexus_version }}-unix.tar.gz"
    nexus_download_url: "http://download.sonatype.com/nexus/3"

The nexus version and package to install, see available versions at https://www.sonatype.com/download-oss-sonatype . You may change the download site for packages by tuning nexus_download_url (e.g. closed environment, proxy/cache on your network...)

nexus_timezone is a Java Timezone name and can be useful in combination with nexus_scheduled_tasks cron expressions below.

Note that if you use a version version different from the default, you should make sure you do not use features which are not available for your version (e.g. yum hosted repositories for nexus < 3.8.0 or git lfs repo for nexus < 3.3.0)

Download dir for nexus package

    nexus_download_dir: '/tmp'

Directory on target where the nexus package will be downloaded.

Nexus port and context path

    nexus_default_port: 8081
    nexus_default_context_path: '/'

Port and context path of the java nexus process. nexus_default_context_path has to keep the trailing slash when set, for ex. : nexus_default_context_path: '/nexus/'.

Nexus OS user and group

    nexus_os_group: 'nexus'
    nexus_os_user: 'nexus'

User and group used to own the nexus files and run the service, those will be created by the role if absent.

Nexus instance directories

    nexus_installation_dir: '/opt'
    nexus_data_dir: '/var/nexus'
    nexus_tmp_dir: '/tmp/nexus'

Nexus directories, nexus_installation_dir contains the installed executable(s), nexus_data_dir contains all configuration, repositories and uploaded artifacts. Note: custom blobstores paths outside of nexus_data_dir can be configured, see nexus_blobstores below.

Admin password

    nexus_admin_password: 'changeme'

The 'admin' account password to setup. Note : admin password change subsequent to first-time provisioning/install is not implemented by this role yet. It is strongly advised that you do not keep your password in clear text in you playbook and include it from a separate ansible-vault encrypted files (loaded with include_vars for example)

Default anonymous access

    nexus_anonymous_access: false

Allow anonymous access to nexus.

Public hostname

    public_hostname: 'nexus.vm'

The fully qualified domain name under which the nexus instance will be accessible to its clients.

Branding capabalities

    nexus_branding_header: ""
    nexus_branding_footer: "Last provisionned {{ ansible_date_time.iso8601 }}"

Header and footer branding, those can contain HTML.

Reverse proxy setup

    httpd_setup_enable: false
    httpd_ssl_certificate_file: 'files/nexus.vm.crt'
    httpd_ssl_certificate_key_file: 'files/nexus.vm.key'

Setup an SSL Reverse-proxy, this needs httpd installed. Note : when httpd_setup_enable is set to true, nexus binds to 127.0.0.1:8081 thus not being directly accessible on HTTP port 8081 from an external IP.

    httpd_copy_ssl_files: true  # Default is false
    # These specifies to the vhost where to find on the remote server file
    # system the certificate files.
    httpd_ssl_cert_file_location: "/etc/pki/tls/certs/wildcard.vm.crt"
    httpd_ssl_cert_key_location: "/etc/pki/tls/private/wildcard.vm.key"

Use already existing SSL certificates on the server file system for the https reverse proxy

    httpd_default_admin_email: "admin@example.com"

Set httpd default admin email address

LDAP configuration

Ldap connections and security realm are disabled by default

    nexus_ldap_realm: false
    ldap_connections: []

LDAP connection(s) setup, each item goes as follow :

    nexus_ldap_realm: true
  - ldap_name: 'My Company LDAP' # used as a key to update the ldap config
    ldap_protocol: 'ldaps' # ldap or ldaps
    ldap_hostname: 'ldap.mycompany.com'
    ldap_port: 636
    ldap_search_base: 'dc=mycompany,dc=net'
    ldap_auth: 'none' # or simple
    ldap_auth_username: 'username' # if auth = simple
    ldap_auth_password: 'password' # if auth = simple
    ldap_user_base_dn: 'ou=users'
    ldap_user_filter: '(cn=*)' # (optional)
    ldap_user_object_class: 'inetOrgPerson'
    ldap_user_id_attribute: 'uid'
    ldap_user_real_name_attribute: 'cn'
    ldap_user_email_attribute: 'mail'
    ldap_user_subtree: false
    ldap_map_groups_as_roles: false
    ldap_group_base_dn: 'ou=groups'
    ldap_group_object_class: 'posixGroup'
    ldap_group_id_attribute: 'cn'
    ldap_group_member_attribute: 'memberUid'
    ldap_group_member_format: '${username}'
    ldap_group_subtree: false

Example LDAP config for anonymous authentication (anonymous bind), this is also the "minimal" config :

    nexus_ldap_realm: true
  - ldap_name: 'Simplest LDAP config'
    ldap_protocol: 'ldaps'
    ldap_hostname: 'annuaire.mycompany.com'
    ldap_search_base: 'dc=mycompany,dc=net'
    ldap_port: 636
    ldap_user_id_attribute: 'uid'
    ldap_user_real_name_attribute: 'cn'
    ldap_user_email_attribute: 'mail'
    ldap_user_object_class: 'inetOrgPerson'

Example LDAP config for simple authentication (using a DSA account) :

    nexus_ldap_realm: true
  - ldap_name: 'LDAP config with DSA'
    ldap_protocol: 'ldaps'
    ldap_hostname: 'annuaire.mycompany.com'
    ldap_port: 636
    ldap_auth: 'simple'
    ldap_auth_username: 'cn=mynexus,ou=dsa,dc=mycompany,dc=net'
    ldap_auth_password: "{{ vault_ldap_dsa_password }}" # better keep passwords in an ansible vault
    ldap_search_base: 'dc=mycompany,dc=net'
    ldap_user_base_dn: 'ou=users'
    ldap_user_object_class: 'inetOrgPerson'
    ldap_user_id_attribute: 'uid'
    ldap_user_real_name_attribute: 'cn'
    ldap_user_email_attribute: 'mail'
    ldap_user_subtree: false

Example LDAP config for simple authentication (using a DSA account) + groups mapped as roles :

    nexus_ldap_realm: true
  - ldap_name: 'LDAP config with DSA'
    ldap_protocol: 'ldaps'
    ldap_hostname: 'annuaire.mycompany.com'
    ldap_port: 636
    ldap_auth: 'simple'
    ldap_auth_username: 'cn=mynexus,ou=dsa,dc=mycompany,dc=net'
    ldap_auth_password: "{{ vault_ldap_dsa_password }}" # better keep passwords in an ansible vault
    ldap_search_base: 'dc=mycompany,dc=net'
    ldap_user_base_dn: 'ou=users'
    ldap_user_object_class: 'inetOrgPerson'
    ldap_user_id_attribute: 'uid'
    ldap_user_real_name_attribute: 'cn'
    ldap_user_email_attribute: 'mail'
    ldap_map_groups_as_roles: true
    ldap_group_base_dn: 'ou=groups'
    ldap_group_object_class: 'groupOfNames'
    ldap_group_id_attribute: 'cn'
    ldap_group_member_attribute: 'member'
    ldap_group_member_format: 'uid=${username},ou=users,dc=mycompany,dc=net'
    ldap_group_subtree: false

Example LDAP config for simple authentication (using a DSA account) + groups mapped as roles dynamically :

    nexus_ldap_realm: true
  - ldap_name: 'LDAP config with DSA'
    ldap_protocol: 'ldaps'
    ldap_hostname: 'annuaire.mycompany.com'
    ldap_port: 636
    ldap_auth: 'simple'
    ldap_auth_username: 'cn=mynexus,ou=dsa,dc=mycompany,dc=net'
    ldap_auth_password: "{{ vault_ldap_dsa_password }}" # better keep passwords in an ansible vault
    ldap_search_base: 'dc=mycompany,dc=net'
    ldap_user_base_dn: 'ou=users'
    ldap_user_object_class: 'inetOrgPerson'
    ldap_user_id_attribute: 'uid'
    ldap_user_real_name_attribute: 'cn'
    ldap_user_email_attribute: 'mail'
    ldap_map_groups_as_roles: true
    ldap_map_groups_as_roles_type: 'dynamic'
    ldap_user_memberof_attribute: 'memberOf'

Privileges, roles and users

    nexus_privileges:
      - name: all-repos-read # used as key to update a privilege
        description: 'Read & Browse access to all repos'
        repository: '*'
        actions: # can be add, browse, create, delete, edit, read or  * (all)
          - read
          - browse

List of the privileges to setup. Those items are combined with the following default values :

    _nexus_privilege_defaults:
      type: repository-view
      format: maven2
      actions:
        - read

    nexus_roles:
      - id: Developpers # can map to a LDAP group id, also used as a key to update a role
        name: developers
        description: All developers
        privileges:
          - nx-search-read
          - all-repos-read
        roles: [] # references to other role names

List of the roles to setup.

    nexus_local_users: []

Local (non-LDAP) users/accounts to create in nexus, items go as follow :

  - username: jenkins # used as key to update
    first_name: Jenkins
    last_name: CI
    email: support@company.com
    password: "s3cr3t"
    roles:
      - developers # role ID

If you want to remove old account, provide only username and set state to absent :

 - username: olduser
   state: absent

Blobstores and repositories

    nexus_delete_default_repos: false

Delete the repositories from the nexus install initial default configuration. This step is only executed on first-time install (when nexus_data_dir has been detected empty).

    nexus_delete_default_blobstore: false

Delete the default blobstore from the nexus install initial default configuration. This can be done only if nexus_delete_default_repos: true and all configured repositories (see below) have an explicit blob_store: custom. This step is only executed on first-time install (when nexus_data_dir has been detected empty).

    nexus_blobstores: []
    # example blobstore item :
    # - name: separate-storage
    #   path: /mnt/custom/path

Blobstores to create. A blobstore path and a repository blobstore cannot be updated after initial creation (any update here will be ignored on re-provisionning).

    nexus_repos_maven_proxy:
      - name: central
        remote_url: 'https://repo1.maven.org/maven2/'
        layout_policy: permissive
      - name: jboss
        remote_url: 'https://repository.jboss.org/nexus/content/groups/public-jboss/'
    # example with a login/password :
    # - name: secret-remote-repo
    #   remote_url: 'https://company.com/repo/secure/private/go/away'
    #   remote_username: 'username'
    #   remote_password: 'secret'

Maven proxy repositories configuration.

    nexus_repos_maven_hosted:
      - name: private-release
        version_policy: release
        write_policy: allow_once  # one of "allow", "allow_once" or "deny"

Maven hosted repositories configuration.

    nexus_repos_maven_group:
      - name: public
        member_repos:
          - central
          - jboss

Maven group repositories configuration.

All three repository types are combined with the following default values :

    _nexus_repos_maven_defaults:
      blob_store: default # Note : cannot be updated once the repo has been created
      strict_content_validation: true
      version_policy: release # release, snapshot or mixed
      layout_policy: strict # strict or permissive
      write_policy: allow_once # one of "allow", "allow_once" or "deny"

Docker, Pypi, Raw, Rubygems, Bower, NPM, Git-LFS and yum repository types: see defaults/main.yml for these options:

      nexus_config_pypi: false
      nexus_config_docker: false
      nexus_config_raw: false
      nexus_config_rubygems: false
      nexus_config_bower: false
      nexus_config_npm: false
      nexus_config_gitlfs: false
      nexus_config_yum: false

These are all false unless you override them from playbook / group_var / cli, these all utilize the same mechanism as maven.

Note that you might need to enable certain security realms if you want to use other repository types than maven. These are false by default

nexus_nuget_api_key_realm: false
nexus_npm_bearer_token_realm: false
nexus_docker_bearer_token_realm: false  # required for docker anonymous access

The Remote User Realm can also be enabled with

nexus_rut_auth_realm: true

and the header can be configured by defining

nexus_rut_auth_header: "CUSTOM_HEADER"

Scheduled tasks

    nexus_scheduled_tasks: []
    #  #  Example task to compact blobstore :
    #  - name: compact-docker-blobstore
    #    cron: '0 0 22 * * ?'
    #    typeId: blobstore.compact
    #    task_alert_email: alerts@example.org  # optional
    #    taskProperties:
    #      blobstoreName: {{ nexus_blob_names.docker.blob }} # all task attributes are stored as strings by nexus internally
    #  #  Example task to purge maven snapshots
    #  - name: Purge-maven-snapshots
    #    cron: '0 50 23 * * ?'
    #    typeId: repository.maven.remove-snapshots
    #    task_alert_email: alerts@example.org  # optional
    #    taskProperties:
    #      repositoryName: "*"  # * for all repos. Change to a repository name if you only want a specific one
    #      minimumRetained: "2"
    #      snapshotRetentionDays: "2"
    #      gracePeriodInDays: "2"
    #    booleanTaskProperties:
    #      removeIfReleased: true
    #  #  Example task to purge unused docker manifest and images
    #  - name: Purge unused docker manifests and images
    #    cron: '0 55 23 * * ?'
    #    typeId: "repository.docker.gc"
    #    task_alert_email: alerts@example.org  # optional
    #    taskProperties:
    #      repositoryName: "*"  # * for all repos. Change to a repository name if you only want a specific one
    #  #  Example task to purge incomplete docker uploads
    #  - name: Purge incomplete docker uploads
    #    cron: '0 0 0 * * ?'
    #    typeId: "repository.docker.upload-purge"
    #    task_alert_email: alerts@example.org  # optional
    #    taskProperties:
    #      age: "24"

Scheduled tasks to setup. typeId and task-specific taskProperties/booleanTaskProperties can be guessed either:

from the java type hierarchy of org.sonatype.nexus.scheduling.TaskDescriptorSupport
by inspecting the task creation html form in your browser
from peeking at the browser AJAX requests while manually configuring a task.

Task properties must be declared in the correct yaml block depending on their type:

taskProperties for all string properties (i.e. repository names, blobstore names, time periods...).
booleanTaskProperties for all boolean properties (i.e. mainly checkboxes in nexus create task GUI).

Backups

      nexus_backup_configure: false
      nexus_backup_cron: '* 0 21 * * ?'  # See cron expressions definition in nexus create task gui
      nexus_backup_dir: '/var/nexus-backup'
      nexus_backup_log: '{{ nexus_backup_dir }}/nexus-backup.log'
      nexus_restore_log: '{{ nexus_backup_dir }}/nexus-restore.log'
      nexus_backup_rotate: false
      nexus_backup_keep_rotations: 4  # Keep 4 backup rotation by default (current + last 3)

Backup will not be configured unless you switch nexus_backup_configure: true. In this case, a scheduled script task will be configured in nexus to run at interval specified by nexus_backup_cron (defaults to 21:00 every day). See the groovy template for this task for details. This scheduled task is independent from the other nexus_scheduled_tasks you declare in your playbook

If you want to rotate backups, set nexus_backup_rotate: true and adjust the number of rotations you would like to keep with nexus_backup_keep_rotations (defaults to 4)

Note that nexus_backup_log must be writable by the nexus user or the backup task will fail

Restore procedure

Run your playbook with parameter -e nexus_restore_point=<YYYY-MM-dd-HH-mm-ss> (e.g. 2017-12-17-21-00-00 for 17th of December 2017 at 21h00m00s)

Possible limitations

Blobstore copies are made directly from nexus by the script scheduled task. This has only been tested on rather small blobstores (less than 50Go) and should be used with caution and tested carefully on larger installations before moving to production. In any case, you are free to implement your own backup scenario outside of this role.

Dependencies

This role requires Ansible 2.2 or higher.

The java and httpd requirements /can/ be fulfilled with the following galaxy roles :

Example Playbook

---
- name: Nexus
  hosts: nexus
  become: yes

  vars:
    nexus_version: '3.7.1-02'
    nexus_timezone: 'Canada/Eastern'
    nexus_admin_password: "{{ vault_nexus_admin_password }}"
    httpd_server_name: 'nexus.vm'
    httpd_setup_enable: true
    httpd_ssl_certificate_file: "{{ vault_httpd_ssl_certificate_file }}"
    httpd_ssl_certificate_key_file: "{{ vault_httpd_ssl_certificate_key_file }}"
    ldap_connections:
      - ldap_name: 'Company LDAP'
        ldap_protocol: 'ldaps'
        ldap_hostname: 'ldap.company.com'
        ldap_port: 636
        ldap_search_base: 'dc=company,dc=net'
        ldap_user_base_dn: 'ou=users'
        ldap_user_object_class: 'inetOrgPerson'
        ldap_user_id_attribute: 'uid'
        ldap_user_real_name_attribute: 'cn'
        ldap_user_email_attribute: 'mail'
        ldap_group_base_dn: 'ou=groups'
        ldap_group_object_class: 'posixGroup'
        ldap_group_id_attribute: 'cn'
        ldap_group_member_attribute: 'memberUid'
        ldap_group_member_format: '${username}'
    nexus_privileges:
      - name: all-repos-read
        description: 'Read & Browse access to all repos'
        repository: '*'
        actions:
          - read
          - browse
      - name: company-project-deploy
        description: 'Deployments to company-project'
        repository: company-project
        actions:
          - add
          - edit
    nexus_roles:
      - id: Developpers # maps to the LDAP group
        name: developers
        description: All developers
        privileges:
          - nx-search-read
          - all-repos-read
          - company-project-deploy
        roles: []
    nexus_local_users:
      - username: jenkins # used as key to update
        first_name: Jenkins
        last_name: CI
        email: support@company.com
        password: "s3cr3t"
        roles:
          - Developpers # role ID here
    nexus_blobstores:
      - name: company-artifacts
        path: /var/nexus/blobs/company-artifacts
    nexus_scheduled_tasks:
      - name: compact-blobstore
        cron: '0 0 22 * * ?'
        typeId: blobstore.compact
        taskProperties:
          blobstoreName: 'company-artifacts'
    nexus_repos_maven_proxy:
      - name: central
        remote_url: 'https://repo1.maven.org/maven2/'
        layout_policy: permissive
      - name: alfresco
        remote_url: 'https://artifacts.alfresco.com/nexus/content/groups/private/'
        remote_username: 'secret-username'
        remote_password: "{{ vault_alfresco_private_password }}"
      - name: jboss
        remote_url: 'https://repository.jboss.org/nexus/content/groups/public-jboss/'
      - name: vaadin-addons
        remote_url: 'https://maven.vaadin.com/vaadin-addons/'
      - name: jaspersoft
        remote_url: 'https://jaspersoft.artifactoryonline.com/jaspersoft/jaspersoft-repo/'
        version_policy: mixed
    nexus_repos_maven_hosted:
      - name: company-project
        version_policy: mixed
        write_policy: allow
        blob_store: company-artifacts
    nexus_repos_maven_group:
      - name: public
        member_repos:
          - central
          - jboss
          - vaadin-addons
          - jaspersoft

  roles:
    - { role: ansiblebit.oracle-java, oracle_java_set_as_default: yes, tags: ['ansiblebit.oracle-java'] }
    # Debian/Ubuntu only
    # - { role: geerlingguy.apache, apache_create_vhosts: no, apache_mods_enabled: ["proxy_http.load", "headers.load"], apache_remove_default_vhost: true, tags: ["geerlingguy.apache"] }
    # RedHat/CentOS only
    - { role: geerlingguy.apache, apache_create_vhosts: no, apache_remove_default_vhost: true, tags: ["geerlingguy.apache"] }
    - { role: ansible-ThoTeam.nexus3-oss, tags: ['savoirfairelinux.nexus3-oss'] }

Development, Contribution and Testing

Contributions

All contributions to this role are welcome, either for bugfixes, new features or documentation.

If you wish to contribute:

Fork the repo under your own name/organisation through github interface
Create a branch in your own repo with a meaningfull name. We suggest the following naming convention:
- feature_ for features
- fix_ for bug fixes
- docfix_ for documentation only fixes
If starting an important feature change, open a pull request early describing what you want to do so we can discuss it if needed. This will prevent you from doing a lot of hard work on a lot of code for changes that we cannot finally merge.
If there are build error on your pull request, have a look at the travis log and fix the relevant errors.

Moreover, if you have time to devote for code review, merge for realeases, etc... drop an email to contact@thoteam.com to get in touch.

Testing

This role includes tests and CI integration through travis. For build time sake, not all tests are run on travis. Currently, only default molecule deployment tests are ran automatically on every merge request creation/upate.

Groovy syntax

This role contains a set of groovy files used to provision nexus. Those files seldom change and tests on travis require a lot of time for setup/run. So they are not run automatically.

If you submit changes to groovy files, please run the groovy syntax check locally before pushing your changes

./tests/test_groovySyntax.sh

You will need the groovy package installed locally to run this test.

Molecule default scenario

The role is tested on travis with molecule. You can run these tests locally. The best way to achieve this is through a python virtualenv. You can find some more details in requirements.txt.

# Note: the following path should be outside the working dir
virtualenv /path/to/some/pyenv
. /path/to/some/pyenv/bin/activate
pip install -r requirements.txt
./tests/test_molecule.sh
deactivate

To speed up tests, molecule uses automated docker build images on docker hub:

Testing everything

As a convenience, we provide a script to run all test at once (including the default molecule scenario)

./tests/test_all.sh

Molecule selinux scenario

We included a second molecule selinux scenario. This one is not run on travis but can be used locally to:

test selinux integration (on centos).
run test and access the running vms under VirtualBox on you local machine.

If you which to use this scenario you will need

VirtualBox
Vagrant
molecule

A typical workflow runs like this:

molecule create -s selinux. Once this is complete, you will see two vagrant vms (centos7 and debian-stretch) in your VirtualBox console. These Vagrant box are taken from http://vagrant.thoteam.com
molecule converge -s selinux will run the scenario test playbook against the two vms. You can pass additionnal variables to ansible on the command line to override playbook or default vars (e.g. molecule converge -s selinux -- -e nexus_backup_rotate=true). You can converge as many times as you want.
You can now access the gui with https://localhost:9101 (centos7) or https://localhost:9102 (debian-stretch). You will need to add a security exception for the self signed ssl certificate. If you did not change it with a command line var above, the default role admin password is "changeme"
When you're happy with your testing, you can recycle the used space with molecule destroy -s selinux

License

GNU GPLv3

Author Information

See: https://github.com/ansible-ThoTeam

Name		Name	Last commit message	Last commit date
Latest commit History 286 Commits
defaults		defaults
files/groovy		files/groovy
handlers		handlers
meta		meta
molecule		molecule
tasks		tasks
templates		templates
tests		tests
vars		vars
.gitignore		.gitignore
.travis.yml		.travis.yml
.yamllint		.yamllint
CODE_OF_CONDUCT.md		CODE_OF_CONDUCT.md
LICENSE.md		LICENSE.md
README.md		README.md
pom.xml		pom.xml
requirements.txt		requirements.txt

License

novatechweb/nexus3-oss

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Ansible Role: Nexus 3 OSS

Table of Contents

History / Credits

Requirements

Role Variables

General variables

Download dir for nexus package

Nexus port and context path

Nexus OS user and group

Nexus instance directories

Admin password

Default anonymous access

Public hostname

Branding capabalities

Reverse proxy setup

LDAP configuration

Privileges, roles and users

Blobstores and repositories

Scheduled tasks

Backups

Restore procedure

Possible limitations

Dependencies

Example Playbook

Development, Contribution and Testing

Contributions

Testing

Groovy syntax

Molecule default scenario

Testing everything

Molecule selinux scenario

License

Author Information

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