Alternatives module breaks alternatives with families on CentOS-based systems #3751

boricj · 2021-11-18T10:42:21Z

Summary

The alternatives module does not handle alternatives with families on CentOS-based systems. The module appears to fail to properly parse the output of update-alternatives --display <item>, confusing it into running update-alternatives --install which destroys the package's original alternatives configuration. This happens for example with Java alternatives, where tools such as keytool cannot be invoked after configuring with this module.

Debian-based systems do not seem to support alternative families and do not exhibit this problem.

Note: while this bug has been encountered on an obsolete version of Ansible, the bug does currently exist on the main branch, as this regex cannot handle the family format:

community.general/plugins/modules/system/alternatives.py

Line 107 in e0b731e

alternative_regex = re.compile(r'^(\/.*)\s-\spriority', re.MULTILINE)

Issue Type

Bug Report

Component Name

alternatives

Ansible Version

$ ansible --version
ansible 2.9.27
  config file = /home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg
  configured module search path = ['/home/boric/Documents/cms5g/tools4-5g/ansible/library']
  ansible python module location = /usr/local/lib/python3.6/site-packages/ansible
  executable location = /usr/local/bin/ansible
  python version = 3.6.8 (default, Aug 12 2021, 07:06:15) [GCC 8.4.1 20200928 (Red Hat 8.4.1-1)]

Note: as noted above, bug exists on the main branch too.

Community.general Version

$ ansible-galaxy collection list community.general
usage: ansible-galaxy collection [-h] COLLECTION_ACTION ...
ansible-galaxy collection: error: argument COLLECTION_ACTION: invalid choice: 'list' (choose from 'init', 'build', 'publish', 'install')

Note: as noted above, bug exists on the main branch too.

Configuration

$ ansible-config dump --only-changed
ANSIBLE_PIPELINING(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = True
ANSIBLE_SSH_ARGS(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = -C -o ControlMaster=auto -o ControlPersist=60s -o ServerAliveInterval=240
DEFAULT_FILTER_PLUGIN_PATH(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = ['/home/boric/Documents/cms5g/tools4-5g/ansible/filter_plugins']
DEFAULT_HOST_LIST(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = ['/home/boric/Documents/cms5g/tools4-5g/ansible/environments/ci5g/ci5g.yaml']
DEFAULT_LOOKUP_PLUGIN_PATH(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = ['/home/boric/Documents/cms5g/tools4-5g/ansible/lookup_plugins', '/home/boric/ansible/tools4-5g/ansible/lookup_plugins']
DEFAULT_MODULE_PATH(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = ['/home/boric/Documents/cms5g/tools4-5g/ansible/library']
DEFAULT_MODULE_UTILS_PATH(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = ['/home/boric/Documents/cms5g/tools4-5g/ansible/library/module_utils']
DEFAULT_ROLES_PATH(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = ['/home/boric/.ansible/roles', '/etc/ansible/roles', '/home/boric/Documents/cms5g/tools4-5g/ansible/roles', '/home/boric/ansible/tools4ct/roles']
HOST_KEY_CHECKING(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = False
INVENTORY_ENABLED(/home/boric/Documents/cms5g/tools4-5g/ansible/ansible.cfg) = ['yaml']

OS / Environment

CentOS 8

Steps to Reproduce

On a CentOS 8 environnment, install two JDKs (yum install java-1.8.0-openjdk-headless.x86_64 java-11-openjdk-headless.x86_64) and run a playbook containing the following task, replacing path with the actual package version installed:

  tasks:
    - name: Configure alternatives
      alternatives:
        name: "java"
        path: "/usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/java"
        link: "/usr/bin/java"

Expected Results

Java alternative links (both main and slaves) points to Java 11, as if the following command was executed:

# update-alternatives --set java /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/java
# update-alternatives --display java
java - status is manual.
 link currently points to /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/java - family java-1.8.0-openjdk.x86_64 priority 1800312
 slave alt-java: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/alt-java
 slave jjs: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/jjs
 slave keytool: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/keytool
 slave orbd: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/orbd
 slave pack200: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/pack200
 slave policytool: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/policytool
 slave rmid: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/rmid
 slave rmiregistry: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/rmiregistry
 slave servertool: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/servertool
 slave tnameserv: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/tnameserv
 slave unpack200: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/unpack200
 slave jre: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre
 slave alt-java.1.gz: /usr/share/man/man1/alt-java-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave java.1.gz: /usr/share/man/man1/java-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave jjs.1.gz: /usr/share/man/man1/jjs-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave keytool.1.gz: /usr/share/man/man1/keytool-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave orbd.1.gz: /usr/share/man/man1/orbd-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave pack200.1.gz: /usr/share/man/man1/pack200-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave policytool.1.gz: /usr/share/man/man1/policytool-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave rmid.1.gz: /usr/share/man/man1/rmid-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave rmiregistry.1.gz: /usr/share/man/man1/rmiregistry-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave servertool.1.gz: /usr/share/man/man1/servertool-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave tnameserv.1.gz: /usr/share/man/man1/tnameserv-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave unpack200.1.gz: /usr/share/man/man1/unpack200-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
/usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/java - family java-11-openjdk.x86_64 priority 1
 slave alt-java: /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/alt-java
 slave jjs: /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/jjs
 slave keytool: /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/keytool
 slave orbd: (null)
 slave pack200: /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/pack200
 slave policytool: (null)
 slave rmid: /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/rmid
 slave rmiregistry: /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/rmiregistry
 slave servertool: (null)
 slave tnameserv: (null)
 slave unpack200: /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/unpack200
 slave jre: /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64
 slave alt-java.1.gz: /usr/share/man/man1/alt-java-java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64.1.gz
 slave java.1.gz: /usr/share/man/man1/java-java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64.1.gz
 slave jjs.1.gz: /usr/share/man/man1/jjs-java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64.1.gz
 slave keytool.1.gz: /usr/share/man/man1/keytool-java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64.1.gz
 slave orbd.1.gz: (null)
 slave pack200.1.gz: /usr/share/man/man1/pack200-java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64.1.gz
 slave policytool.1.gz: (null)
 slave rmid.1.gz: /usr/share/man/man1/rmid-java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64.1.gz
 slave rmiregistry.1.gz: /usr/share/man/man1/rmiregistry-java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64.1.gz
 slave servertool.1.gz: (null)
 slave tnameserv.1.gz: (null)
 slave unpack200.1.gz: /usr/share/man/man1/unpack200-java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64.1.gz
Current `best' version is /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/java.

Actual Results

Java main alternative link points to Java 11, but slave links, family and original priority information are lost:

# update-alternatives --display java
java - status is manual.
 link currently points to /usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/java - family java-1.8.0-openjdk.x86_64 priority 1800312
 slave alt-java: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/alt-java
 slave jjs: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/jjs
 slave keytool: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/keytool
 slave orbd: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/orbd
 slave pack200: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/pack200
 slave policytool: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/policytool
 slave rmid: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/rmid
 slave rmiregistry: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/rmiregistry
 slave servertool: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/servertool
 slave tnameserv: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/tnameserv
 slave unpack200: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/unpack200
 slave jre: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre
 slave alt-java.1.gz: /usr/share/man/man1/alt-java-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave java.1.gz: /usr/share/man/man1/java-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave jjs.1.gz: /usr/share/man/man1/jjs-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave keytool.1.gz: /usr/share/man/man1/keytool-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave orbd.1.gz: /usr/share/man/man1/orbd-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave pack200.1.gz: /usr/share/man/man1/pack200-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave policytool.1.gz: /usr/share/man/man1/policytool-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave rmid.1.gz: /usr/share/man/man1/rmid-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave rmiregistry.1.gz: /usr/share/man/man1/rmiregistry-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave servertool.1.gz: /usr/share/man/man1/servertool-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave tnameserv.1.gz: /usr/share/man/man1/tnameserv-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
 slave unpack200.1.gz: /usr/share/man/man1/unpack200-java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64.1.gz
/usr/lib/jvm/java-11-openjdk-11.0.13.0.8-3.el8_5.x86_64/bin/java - priority 50
 slave alt-java: (null)
 slave jjs: (null)
 slave keytool: (null)
 slave orbd: (null)
 slave pack200: (null)
 slave policytool: (null)
 slave rmid: (null)
 slave rmiregistry: (null)
 slave servertool: (null)
 slave tnameserv: (null)
 slave unpack200: (null)
 slave jre: (null)
 slave alt-java.1.gz: (null)
 slave java.1.gz: (null)
 slave jjs.1.gz: (null)
 slave keytool.1.gz: (null)
 slave orbd.1.gz: (null)
 slave pack200.1.gz: (null)
 slave policytool.1.gz: (null)
 slave rmid.1.gz: (null)
 slave rmiregistry.1.gz: (null)
 slave servertool.1.gz: (null)
 slave tnameserv.1.gz: (null)
 slave unpack200.1.gz: (null)
Current `best' version is /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/java.

Code of Conduct

I agree to follow the Ansible Code of Conduct

The text was updated successfully, but these errors were encountered:

ansibullbot · 2021-11-18T10:42:55Z

Files identified in the description:

plugins/modules/system/alternatives.py

If these files are incorrect, please update the component name section of the description or use the !component bot command.

click here for bot help

ansibullbot · 2021-11-18T10:42:56Z

cc @mulby
click here for bot help

Akasurde · 2022-01-25T05:15:32Z

@boricj Could you please check if #3976 fixes this issue? Thanks in advance.

boricj · 2022-01-25T19:26:26Z

@Akasurde As noted in #3976, I no longer have the setup to test the fix against, but I believe it would fix the issue.

felixfontein · 2022-01-25T20:50:12Z

Let's close this issue for now. If it turns out this is still an issue, either someone can create a new one, or we can re-open this one.

Thanks everyone!

ansibullbot added bug This issue/PR relates to a bug module module plugins plugin (any type) system labels Nov 18, 2021

felixfontein mentioned this issue Jan 5, 2022

fix alternatives parsing when they are part of a group #3976

Merged

Akasurde added the needs_info This issue requires further information. Please answer any outstanding questions label Jan 25, 2022

ansibullbot added the has_pr label Jan 25, 2022

ansibullbot removed the needs_info This issue requires further information. Please answer any outstanding questions label Jan 25, 2022

felixfontein closed this as completed Jan 25, 2022

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Alternatives module breaks alternatives with families on CentOS-based systems #3751

Alternatives module breaks alternatives with families on CentOS-based systems #3751

boricj commented Nov 18, 2021

ansibullbot commented Nov 18, 2021

ansibullbot commented Nov 18, 2021

Akasurde commented Jan 25, 2022

boricj commented Jan 25, 2022

felixfontein commented Jan 25, 2022

Alternatives module breaks alternatives with families on CentOS-based systems #3751

Alternatives module breaks alternatives with families on CentOS-based systems #3751

Comments

boricj commented Nov 18, 2021

Summary

Issue Type

Component Name

Ansible Version

Community.general Version

Configuration

OS / Environment

Steps to Reproduce

Expected Results

Actual Results

Code of Conduct

ansibullbot commented Nov 18, 2021

ansibullbot commented Nov 18, 2021

Akasurde commented Jan 25, 2022

boricj commented Jan 25, 2022

felixfontein commented Jan 25, 2022