CODEWITHSUNDEEP
ansible
user3387068
user3387068

Reputation: 173

Ansible Unarchive command causes error "Failed to find handler"

I operate AmazonLinux2 on EC2 using Ansible. However, when the Unarchive command is executed, the following error is displayed. 

"Failed to find handler for \"/tmp/hoge.db.gz\".   
Make sure the required command to extract the file is installed.  
Command \"/usr/bin/unzip\" could not handle archive. Command \"/usr/bin/gtar\" could not handle archive."

The contents of PlayBook are as follows.

- name: Unarchive hoge
  become: yes
  unarchive:
    src: /tmp/hoge.db.gz
    dest: /root/fuga/
    remote_src: yes

Below is the information I have examined to identify the cause of the error.

[root@ip- ~]# which gtar
/usr/bin/gtar
[root@ip- ~]# which unzip
/usr/bin/unzip
[root@ip- ~]# which zipinfo
/usr/bin/zipinfo

- debug:
    var: ansible_env.PATH

"ansible_env.PATH": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin"

Upvotes: 6

Views: 18076

Answers (4)

SkunkSpinner
SkunkSpinner

Reputation: 11636

Make sure you are using gtar to create the archive and not tar.

I was creating my archive files on RHEL 7 with tar and they worked fine with the unarchive module.

When I migrated to RHEL 8 and used the same tar script, I started getting this error. When I ran the same script with gtar, it worked fine.

I debugged the ansible.modules.unarchive module and behind the scenes, it runs this command:

gtar --list -C <dest> <src>

If that command returns error code 0, then it will work.

Upvotes: 0

Daniel Andrzejewski
Daniel Andrzejewski

Reputation: 686

Make sure your archive file is indeed an archive. In my case I thought I downloaded tar.gz file, yet it was a pure html file.

Example: https://www.apache.org/dyn/closer.lua/zookeeper/zookeeper-3.8.2/apache-zookeeper-3.8.2-bin.tar.gz

$ wget https://www.apache.org/dyn/closer.lua/zookeeper/zookeeper-3.8.2/apache-zookeeper-3.8.2-bin.tar.gz
$ file apache-zookeeper-3.8.2-bin.tar.gz: HTML document, ASCII text, with very long lines (785)

Upvotes: 0

Nicolas G&#246;ddel
Nicolas G&#246;ddel

Reputation: 166

It works if you use the extra_opts like so:

- name: Unarchive hoge
  become: true
  ansible.builtin.unarchive:
    src: /tmp/hoge.db.gz
    dest: /root/fuga/
    remote_src: yes
    extra_opts:
     - '-z'

Tested with ansible 2.9.25 and python 3.6.8 on CentOS 8.

Upvotes: 2

Matt P
Matt P

Reputation: 2625

The unarchive module cannot handle gzip files unless they are a compressed tar ball (see https://docs.ansible.com/ansible/latest/modules/unarchive_module.html).

You will need to use the copy module to first copy the gzip file, and then the shell module to decompress it using gunzip.

Example:

- copy:
    src: /tmp/hoge.db.gz
    dest: /root/fuga/hoge.db.gz
- shell: gunzip /root/fuga/hoge.db.gz

You may need to first install gunzip on the managed host

Upvotes: 6

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