here some verbose log of the ansible run:

packer build --var-file templates/vars.pkrvars.json 
templates/kvm/centos7/packer-kvm-centos7.json
qemu: output will be in this color.

==> qemu: Retrieving ISO
==> qemu: Trying 
http://linuxsoft.cern.ch/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-2009.iso
==> qemu: Trying 
http://linuxsoft.cern.ch/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-2009.iso?checksum=sha256%3A07b94e6b1a0b0260b94c83d6bb76b26bf7a310dc78d7a9c7432809fb9bc6194a
==> qemu: 
http://linuxsoft.cern.ch/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-2009.iso?checksum=sha256%3A07b94e6b1a0b0260b94c83d6bb76b26bf7a310dc78d7a9c7432809fb9bc6194a
 
=> 
/home/USER/packer-cloudstack-templates/packer_cache/e476ea1d3ef3c2e3966a7081ac4239cd5ae5e8a3.iso
==> qemu: Creating floppy disk...
    qemu: Copying files flatly from floppy_files
    qemu: Copying file: templates/ks/CentOS/7/CentOS-7-x86_64-cloud.cfg
    qemu: Done copying files from floppy_files
    qemu: Collecting paths from floppy_dirs
    qemu: Resulting paths from floppy_dirs : []
    qemu: Done copying paths from floppy_dirs
==> qemu: Found port for communicator (SSH, WinRM, etc): 3139.
==> qemu: Looking for available port between 5900 and 6000 on 127.0.0.1
==> qemu: Starting VM, booting from CD-ROM
==> qemu: Waiting 20s for boot...
==> qemu: Connecting to VM via VNC (127.0.0.1:5925)
==> qemu: Typing the boot command over VNC...
    qemu: Not using a NetBridge -- skipping StepWaitGuestAddress
==> qemu: Using ssh communicator to connect: 127.0.0.1
==> qemu: Waiting for SSH to become available...
==> qemu: Connected to SSH!
==> qemu: Provisioning with Ansible...
    qemu: Not using Proxy adapter for Ansible run:
    qemu: Using ssh keys from Packer communicator...
==> qemu: Executing Ansible: ansible-playbook -e packer_build_name="qemu" 
-e packer_builder_type=qemu -e packer_http_addr=10.0.2.2:0 --ssh-extra-args 
'-o IdentitiesOnly=yes' -vvvv -e 
ansible_ssh_private_key_file=/tmp/ansible-key174874968 -i 
/tmp/packer-provisioner-ansible785963223 
/home/USER/packer-cloudstack-templates/templates/kvm/centos7/playbooks/main.yml
    qemu: ansible-playbook 2.10.5
    qemu:   config file = /etc/ansible/ansible.cfg
    qemu:   configured module search path = 
['/home/USER/.ansible/plugins/modules', 
'/usr/share/ansible/plugins/modules']
    qemu:   ansible python module location = 
/home/USER/packer-cloudstack-templates/ansible/lib/python3.9/site-packages/ansible
    qemu:   executable location = 
/home/USER/packer-cloudstack-templates/ansible/bin/ansible-playbook
    qemu:   python version = 3.9.1 (default, Jan 20 2021, 00:00:00) [GCC 
10.2.1 20201125 (Red Hat 10.2.1-9)]
    qemu: Using /etc/ansible/ansible.cfg as config file
    qemu: setting up inventory plugins
    qemu: host_list declined parsing 
/tmp/packer-provisioner-ansible785963223 as it did not pass its 
verify_file() method
    qemu: script declined parsing /tmp/packer-provisioner-ansible785963223 
as it did not pass its verify_file() method
    qemu: auto declined parsing /tmp/packer-provisioner-ansible785963223 as 
it did not pass its verify_file() method
    qemu: Parsed /tmp/packer-provisioner-ansible785963223 inventory source 
with ini plugin
    qemu: Loading callback plugin default of type stdout, v2.0 from 
/home/USER/packer-cloudstack-templates/ansible/lib/python3.9/site-packages/ansible/plugins/callback/default.py
    qemu: Skipping callback 'default', as we already have a stdout callback.
    qemu: Skipping callback 'minimal', as we already have a stdout callback.
    qemu: Skipping callback 'oneline', as we already have a stdout callback.
    qemu:
    qemu: PLAYBOOK: main.yml 
*************************************************************
    qemu: Positional arguments: 
/home/USER/packer-cloudstack-templates/templates/kvm/centos7/playbooks/main.yml
    qemu: verbosity: 4
    qemu: connection: smart
    qemu: timeout: 10
    qemu: ssh_extra_args: '-o IdentitiesOnly=yes'
    qemu: become_method: sudo
    qemu: tags: ('all',)
    qemu: inventory: ('/tmp/packer-provisioner-ansible785963223',)
    qemu: extra_vars: ('packer_build_name="qemu"', 
'packer_builder_type=qemu', 'packer_http_addr=10.0.2.2:0', 
'ansible_ssh_private_key_file=/tmp/ansible-key174874968')
    qemu: forks: 5
    qemu: 1 plays in 
/home/USER/packer-cloudstack-templates/templates/kvm/centos7/playbooks/main.yml
    qemu:
    qemu: PLAY [Configure new VM] 
********************************************************
    qemu:
    qemu: TASK [Gathering Facts] 
*********************************************************
    qemu: task path: 
/home/USER/packer-cloudstack-templates/templates/kvm/centos7/playbooks/main.yml:1
    qemu: <127.0.0.1> ESTABLISH SSH CONNECTION FOR USER: root
    qemu: <127.0.0.1> SSH: EXEC ssh -vvv -o ForwardAgent=yes -o 
ControlMaster=auto -o ControlPersist=60s -o StrictHostKeyChecking=no -o 
Port=3139 -o 'IdentityFile="/tmp/ansible-key174874968"' -o 
KbdInteractiveAuthentication=no -o 
PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey 
-o PasswordAuthentication=no -o 'User="root"' -o ConnectTimeout=10 '-o 
IdentitiesOnly=yes' -o ControlPath=/home/ismailli/.ansible/cp/d4ca02e546 
127.0.0.1 '/bin/sh -c '"'"'echo ~root && sleep 0'"'"''
    qemu: <127.0.0.1> (255, b'', b'OpenSSH_8.4p1, OpenSSL 1.1.1i FIPS  8 
Dec 2020
    debug1: Reading configuration data /home/USER/.ssh/config
    debug1: /home/USER/.ssh/config line 5: Applying options for *
    debug1: Reading configuration data /etc/ssh/ssh_config
    debug3: /etc/ssh/ssh_config line 55: Including file 
/etc/ssh/ssh_config.d/50-redhat.conf depth 0
    debug1: Reading configuration data /etc/ssh/ssh_config.d/50-redhat.conf
    debug2: checking match for \'final all\' host 127.0.0.1 originally 
127.0.0.1
    debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 3: not matched 
\'final\'
    debug2: match not found
    debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 5: Including file 
/etc/crypto-policies/back-ends/openssh.config depth 1 (parse only)
    debug1: Reading configuration data 
/etc/crypto-policies/back-ends/openssh.config
    debug3: gss kex names ok: 
[gss-curve25519-sha256-,gss-nistp256-sha256-,gss-group14-sha256-,gss-group16-sha512-]
    debug3: kex names ok: 
[curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512]
    debug1: configuration requests final Match pass
    debug2: resolve_canonicalize: hostname 127.0.0.1 is address
    debug1: re-parsing configuration
    debug1: Reading configuration data /home/USER/.ssh/config
    debug1: /home/USER/.ssh/config line 5: Applying options for *
    debug1: Reading configuration data /etc/ssh/ssh_config
    debug3: /etc/ssh/ssh_config line 55: Including file 
/etc/ssh/ssh_config.d/50-redhat.conf depth 0
    debug1: Reading configuration data /etc/ssh/ssh_config.d/50-redhat.conf
    debug2: checking match for \'final all\' host 127.0.0.1 originally 
127.0.0.1
    debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 3: matched \'final\'
    debug2: match found
    debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 5: Including file 
/etc/crypto-policies/back-ends/openssh.config depth 1
    debug1: Reading configuration data 
/etc/crypto-policies/back-ends/openssh.config
    debug3: gss kex names ok: 
[gss-curve25519-sha256-,gss-nistp256-sha256-,gss-group14-sha256-,gss-group16-sha512-]
    debug3: kex names ok: 
[curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512]
    debug3: expanded UserKnownHostsFile \'~/.ssh/known_hosts\' -> 
\'/home/USER/.ssh/known_hosts\'
    debug3: expanded UserKnownHostsFile \'~/.ssh/known_hosts2\' -> 
\'/home/USER/.ssh/known_hosts2\'
    debug1: auto-mux: Trying existing master
    debug1: Control socket "/home/USER/.ansible/cp/d4ca02e546" does not 
exist
    debug2: ssh_connect_direct
    debug1: Connecting to 127.0.0.1 [127.0.0.1] port 3139.
    debug2: fd 4 setting O_NONBLOCK
    debug1: fd 4 clearing O_NONBLOCK
    debug1: Connection established.
    debug3: timeout: 10000 ms remain after connect
    debug1: identity file /tmp/ansible-key174874968 type -1
    debug1: identity file /tmp/ansible-key174874968-cert type -1
    debug1: Local version string SSH-2.0-OpenSSH_8.4
    debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4
    debug1: match: OpenSSH_7.4 pat OpenSSH_7.4* compat 0x04000006
    debug2: fd 4 setting O_NONBLOCK
    debug1: Authenticating to 127.0.0.1:3139 as \'root\'
    debug3: put_host_port: [127.0.0.1]:3139
    debug3: hostkeys_foreach: reading file "/home/USER/.ssh/known_hosts"
    debug3: send packet: type 20
    debug1: SSH2_MSG_KEXINIT sent
    debug3: receive packet: type 20
    debug1: SSH2_MSG_KEXINIT received
    debug2: local client KEXINIT proposal
    debug2: KEX algorithms: 
curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,ext-info-c
    debug2: host key algorithms: 
[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],ssh-ed25519,[email protected],rsa-sha2-512,rsa-sha2-256,ssh-rsa
    debug2: ciphers ctos: 
[email protected],[email protected],aes256-ctr,[email protected],aes128-ctr
    debug2: ciphers stoc: 
[email protected],[email protected],aes256-ctr,[email protected],aes128-ctr
    debug2: MACs ctos: 
[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha1,[email protected],hmac-sha2-512
    debug2: MACs stoc: 
[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha1,[email protected],hmac-sha2-512
    debug2: compression ctos: none,[email protected],zlib
    debug2: compression stoc: none,[email protected],zlib
    debug2: languages ctos: 
    debug2: languages stoc: 
    debug2: first_kex_follows 0 
    debug2: reserved 0 
    debug2: peer server KEXINIT proposal
    debug2: KEX algorithms: 
curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
    debug2: host key algorithms: 
ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
    debug2: ciphers ctos: 
[email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc
    debug2: ciphers stoc: 
[email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc
    debug2: MACs ctos: 
[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
    debug2: MACs stoc: 
[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
    debug2: compression ctos: none,[email protected]
    debug2: compression stoc: none,[email protected]
    debug2: languages ctos: 
    debug2: languages stoc: 
    debug2: first_kex_follows 0 
    debug2: reserved 0 
    debug1: kex: algorithm: curve25519-sha256
    debug1: kex: host key algorithm: ecdsa-sha2-nistp256
    debug1: kex: server->client cipher: [email protected] MAC: 
<implicit> compression: none
    debug1: kex: client->server cipher: [email protected] MAC: 
<implicit> compression: none
    debug1: kex: curve25519-sha256 need=32 dh_need=32
    debug1: kex: curve25519-sha256 need=32 dh_need=32
    debug3: send packet: type 30
    debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
    debug3: receive packet: type 31
    debug1: Server host key: ecdsa-sha2-nistp256 
SHA256:Es8Oo2XjdSova3XecTHlqE/TfWdQu5mz0AkCnMBAuIc
    debug3: put_host_port: [127.0.0.1]:3139
    debug3: put_host_port: [127.0.0.1]:3139
    debug3: hostkeys_foreach: reading file "/home/USER/.ssh/known_hosts"
    debug1: checking without port identifier
    debug3: hostkeys_foreach: reading file "/home/USER/.ssh/known_hosts"
    Warning: Permanently added \'[127.0.0.1]:3139\' (ECDSA) to the list of 
known hosts.
    debug3: send packet: type 21
    debug2: set_newkeys: mode 1
    debug1: rekey out after 4294967296 blocks
    debug1: SSH2_MSG_NEWKEYS sent
    debug1: expecting SSH2_MSG_NEWKEYS
    debug3: receive packet: type 21
    debug1: SSH2_MSG_NEWKEYS received
    debug2: set_newkeys: mode 0
    debug1: rekey in after 4294967296 blocks
    debug1: Will attempt key: /tmp/ansible-key174874968  explicit
    debug2: pubkey_prepare: done
    debug3: send packet: type 5
    debug3: receive packet: type 7
    debug1: SSH2_MSG_EXT_INFO received
    debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
    debug3: receive packet: type 6
    debug2: service_accept: ssh-userauth
    debug1: SSH2_MSG_SERVICE_ACCEPT received
    debug3: send packet: type 50
    debug3: receive packet: type 51
    debug1: Authentications that can continue: 
publickey,gssapi-keyex,gssapi-with-mic,password
    debug3: start over, passed a different list 
publickey,gssapi-keyex,gssapi-with-mic,password
    debug3: preferred gssapi-with-mic,gssapi-keyex,hostbased,publickey
    debug3: authmethod_lookup gssapi-with-mic
    debug3: remaining preferred: gssapi-keyex,hostbased,publickey
    debug3: authmethod_is_enabled gssapi-with-mic
    debug1: Next authentication method: gssapi-with-mic
    debug1: Unspecified GSS failure.  Minor code may provide more 
information\nNo Kerberos credentials available (default cache: KCM:)\n\n
    debug1: Unspecified GSS failure.  Minor code may provide more 
information\nNo Kerberos credentials available (default cache: KCM:)\n\n
    debug1: Unspecified GSS failure.  Minor code may provide more 
information\nFeature not available\n\n
    debug2: we did not send a packet, disable method
    debug3: authmethod_lookup gssapi-keyex
    debug3: remaining preferred: hostbased,publickey
    debug3: authmethod_lookup publickey
    debug3: remaining preferred: ,publickey
    debug3: authmethod_is_enabled publickey
    debug1: Next authentication method: publickey
    debug1: Trying private key: /tmp/ansible-key174874968
    Load key "/tmp/ansible-key174874968": invalid format
    debug2: we did not send a packet, disable method
    debug1: No more authentication methods to try.
    [email protected]: Permission denied 
(publickey,gssapi-keyex,gssapi-with-mic,password).
    ')
    qemu: fatal: [packer-template]: UNREACHABLE! => {
    qemu:     "changed": false,
    qemu:     "msg": "Failed to connect to the host via ssh: OpenSSH_8.4p1, 
OpenSSL 1.1.1i FIPS  8 Dec 2020
    debug1: Reading configuration data /home/USER/.ssh/config
    debug1: /home/USER/.ssh/config line 5: Applying options for *
    debug1: Reading configuration data /etc/ssh/ssh_config
    debug3: /etc/ssh/ssh_config line 55: Including file 
/etc/ssh/ssh_config.d/50-redhat.conf depth 0
    debug1: Reading configuration data /etc/ssh/ssh_config.d/50-redhat.conf
    debug2: checking match for 'final all' host 127.0.0.1 originally 
127.0.0.1
    debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 3: not matched 'final'
    debug2: match not found
    debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 5: Including file 
/etc/crypto-policies/back-ends/openssh.config depth 1 (parse only)
    debug1: Reading configuration data 
/etc/crypto-policies/back-ends/openssh.config
    debug3: gss kex names ok: 
[gss-curve25519-sha256-,gss-nistp256-sha256-,gss-group14-sha256-,gss-group16-sha512-]
    debug3: kex names ok: 
[curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512]
    debug1: configuration requests final Match pass
    debug2: resolve_canonicalize: hostname 127.0.0.1 is address
    debug1: re-parsing configuration
    debug1: Reading configuration data /home/USER/.ssh/config
    debug1: /home/USER/.ssh/config line 5: Applying options for *
    debug1: Reading configuration data /etc/ssh/ssh_config
    debug3: /etc/ssh/ssh_config line 55: Including file 
/etc/ssh/ssh_config.d/50-redhat.conf depth 0
    debug1: Reading configuration data /etc/ssh/ssh_config.d/50-redhat.conf
    debug2: checking match for 'final all' host 127.0.0.1 originally 
127.0.0.1
    debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 3: matched 'final'
    debug2: match found
    debug3: /etc/ssh/ssh_config.d/50-redhat.conf line 5: Including file 
/etc/crypto-policies/back-ends/openssh.config depth 1
    debug1: Reading configuration data 
/etc/crypto-policies/back-ends/openssh.config
    debug3: gss kex names ok: 
[gss-curve25519-sha256-,gss-nistp256-sha256-,gss-group14-sha256-,gss-group16-sha512-]
    debug3: kex names ok: 
[curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512]
    debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> 
'/home/USER/.ssh/known_hosts'
    debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> 
'/home/USER/.ssh/known_hosts2'
    debug1: auto-mux: Trying existing master
    debug1: Control socket \"/home/USER/.ansible/cp/d4ca02e546\" does not 
exist
    debug2: ssh_connect_direct
    debug1: Connecting to 127.0.0.1 [127.0.0.1] port 3139.
    debug2: fd 4 setting O_NONBLOCK
    debug1: fd 4 clearing O_NONBLOCK
    debug1: Connection established.
    debug3: timeout: 10000 ms remain after connect
    debug1: identity file /tmp/ansible-key174874968 type -1
    debug1: identity file /tmp/ansible-key174874968-cert type -1
    debug1: Local version string SSH-2.0-OpenSSH_8.4
    debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4
    debug1: match: OpenSSH_7.4 pat OpenSSH_7.4* compat 0x04000006
    debug2: fd 4 setting O_NONBLOCK
    debug1: Authenticating to 127.0.0.1:3139 as 'root'
    debug3: put_host_port: [127.0.0.1]:3139
    debug3: hostkeys_foreach: reading file \"/home/USER/.ssh/known_hosts\"
    debug3: send packet: type 20
    debug1: SSH2_MSG_KEXINIT sent
    debug3: receive packet: type 20
    debug1: SSH2_MSG_KEXINIT received
    debug2: local client KEXINIT proposal
    debug2: KEX algorithms: 
curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,ext-info-c
    debug2: host key algorithms: 
[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],ssh-ed25519,[email protected],rsa-sha2-512,rsa-sha2-256,ssh-rsa
    debug2: ciphers ctos: 
[email protected],[email protected],aes256-ctr,[email protected],aes128-ctr
    debug2: ciphers stoc: 
[email protected],[email protected],aes256-ctr,[email protected],aes128-ctr
    debug2: MACs ctos: 
[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha1,[email protected],hmac-sha2-512
    debug2: MACs stoc: 
[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha1,[email protected],hmac-sha2-512
    debug2: compression ctos: none,[email protected],zlib
    debug2: compression stoc: none,[email protected],zlib
    debug2: languages ctos: 
    debug2: languages stoc: 
    debug2: first_kex_follows 0 
    debug2: reserved 0 
    debug2: peer server KEXINIT proposal
    debug2: KEX algorithms: 
curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
    debug2: host key algorithms: 
ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
    debug2: ciphers ctos: 
[email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc
    debug2: ciphers stoc: 
[email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc
    debug2: MACs ctos: 
[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
    debug2: MACs stoc: 
[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
    debug2: compression ctos: none,[email protected]
    debug2: compression stoc: none,[email protected]
    debug2: languages ctos: 
    debug2: languages stoc: 
    debug2: first_kex_follows 0 
    debug2: reserved 0 
    debug1: kex: algorithm: curve25519-sha256
    debug1: kex: host key algorithm: ecdsa-sha2-nistp256
    debug1: kex: server->client cipher: [email protected] MAC: 
<implicit> compression: none
    debug1: kex: client->server cipher: [email protected] MAC: 
<implicit> compression: none
    debug1: kex: curve25519-sha256 need=32 dh_need=32
    debug1: kex: curve25519-sha256 need=32 dh_need=32
    debug3: send packet: type 30
    debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
    debug3: receive packet: type 31
    debug1: Server host key: ecdsa-sha2-nistp256 
SHA256:Es8Oo2XjdSova3XecTHlqE/TfWdQu5mz0AkCnMBAuIc
    debug3: put_host_port: [127.0.0.1]:3139
    debug3: put_host_port: [127.0.0.1]:3139
    debug3: hostkeys_foreach: reading file \"/home/USER/.ssh/known_hosts\"
    debug1: checking without port identifier
    debug3: hostkeys_foreach: reading file \"/home/USER/.ssh/known_hosts\"
    Warning: Permanently added '[127.0.0.1]:3139' (ECDSA) to the list of 
known hosts.
    debug3: send packet: type 21
    debug2: set_newkeys: mode 1
    debug1: rekey out after 4294967296 blocks
    debug1: SSH2_MSG_NEWKEYS sent
    debug1: expecting SSH2_MSG_NEWKEYS
    debug3: receive packet: type 21
    debug1: SSH2_MSG_NEWKEYS received
    debug2: set_newkeys: mode 0
    debug1: rekey in after 4294967296 blocks
    debug1: Will attempt key: /tmp/ansible-key174874968  explicit
    debug2: pubkey_prepare: done
    debug3: send packet: type 5
    debug3: receive packet: type 7
    debug1: SSH2_MSG_EXT_INFO received
    debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
    debug3: receive packet: type 6
    debug2: service_accept: ssh-userauth
    debug1: SSH2_MSG_SERVICE_ACCEPT received
    debug3: send packet: type 50
    debug3: receive packet: type 51
    debug1: Authentications that can continue: 
publickey,gssapi-keyex,gssapi-with-mic,password
    debug3: start over, passed a different list 
publickey,gssapi-keyex,gssapi-with-mic,password
    debug3: preferred gssapi-with-mic,gssapi-keyex,hostbased,publickey
    debug3: authmethod_lookup gssapi-with-mic
    debug3: remaining preferred: gssapi-keyex,hostbased,publickey
    debug3: authmethod_is_enabled gssapi-with-mic
    debug1: Next authentication method: gssapi-with-mic
    debug1: Unspecified GSS failure.  Minor code may provide more 
information\nNo Kerberos credentials available (default cache: KCM:)\n\n
    debug1: Unspecified GSS failure.  Minor code may provide more 
information\nNo Kerberos credentials available (default cache: KCM:)\n\n
    debug1: Unspecified GSS failure.  Minor code may provide more 
information\nFeature not available\n\n
    debug2: we did not send a packet, disable method
    debug3: authmethod_lookup gssapi-keyex
    debug3: remaining preferred: hostbased,publickey
    debug3: authmethod_lookup publickey
    debug3: remaining preferred: ,publickey
    debug3: authmethod_is_enabled publickey
    debug1: Next authentication method: publickey
    debug1: Trying private key: /tmp/ansible-key174874968
    Load key \"/tmp/ansible-key174874968\": invalid format
    debug2: we did not send a packet, disable method
    debug1: No more authentication methods to try.
    [email protected]: Permission denied 
(publickey,gssapi-keyex,gssapi-with-mic,password).",
    qemu:     "unreachable": true
    qemu: }
    qemu:
    qemu: PLAY RECAP 
*********************************************************************
    qemu: packer-template            : ok=0    changed=0    unreachable=1  
  failed=0    skipped=0    rescued=0    ignored=0
    qemu:
==> qemu: Provisioning step had errors: Running the cleanup provisioner, if 
present...
==> qemu: Deleting output directory...
Build 'qemu' errored after 5 minutes 57 seconds: Error executing Ansible: 
Non-zero exit 

Doni schrieb am Freitag, 5. Februar 2021 um 11:17:48 UTC+1:

> Hi!
>
> I'm building a centos7 template from iso and use an ssh username / 
> password for authentication. As a provisioner I'm using ansible remote but 
> have no luck connecting to my instance... The generated key in 
> /tmp/ansible-key**** is always empty and ansible can't connect with it. 
> This did work perfectly fine in the past but something must have changed as 
> the the communication over ansible is not working any longer. Do you have a 
> hint for me?
>
> I can provide logs if you need some and the json as well just ask.
>
> Regards
> Doni
>

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