Folks, I have a working cluster but today when I ran the following command I got very nasty error like the following. Even 192.168.75.144 is function node but giving super log error output that i can't copy paste here. $ sudo kolla-ansible -i /etc/kolla/multinode deploy -t nova-cell --limit 192.168.75.144 ... .... ....... PLAY [Gather facts for all hosts] ******************************************************************************************************************************************************************** TASK [Gather facts] ********************************************************************************************************************************************************************************** ok: [192.168.75.144] TASK [Group hosts to determine when using --limit] *************************************************************************************************************************************************** ok: [192.168.75.144] PLAY [Gather facts for all hosts (if using --limit)] ************************************************************************************************************************************************* TASK [Gather facts] ********************************************************************************************************************************************************************************** skipping: [192.168.75.144] => (item=192.168.75.144) ok: [192.168.75.144 -> 192.168.75.145] => (item=192.168.75.145) ok: [192.168.75.144 -> 192.168.75.146] => (item=192.168.75.146) failed: [192.168.75.144 -> 192.168.75.178] (item=192.168.75.178) => {"ansible_loop_var": "item", "item": "192.168.75.178", "msg": "Failed to connect to the host via ssh: ssh: connect to host 192.168.75.178 port 22: No route to host", "unreachable": true} ok: [192.168.75.144 -> 192.168.75.179] => (item=192.168.75.179) failed: [192.168.75.144 -> 192.168.75.180] (item=192.168.75.180) => {"ansible_loop_var": "item", "item": "192.168.75.180", "msg": "Failed to connect to the host via ssh: ssh: connect to host 192.168.75.180 port 22: No route to host", "unreachable": true} ok: [192.168.75.144 -> 192.168.75.181] => (item=192.168.75.181) ok: [192.168.75.144 -> 192.168.75.147] => (item=192.168.75.147) ok: [192.168.75.144 -> localhost] => (item=localhost) fatal: [192.168.75.144 -> {{ item }}]: UNREACHABLE! => {"changed": false, "msg": "All items completed", "results": [{"ansible_loop_var": "item", "changed": false, "item": "192.168.75.144", "skip_reason": "Conditional result was False", "skipped": true}, {"ansible_facts": {"ansible_all_ipv4_addresses": ["192.168.75.145"], "ansible_all_ipv6_addresses": ["fe80::3eec:efff:fe1f:1776", "fe80::f802:e3ff:fe71:e58c"], "ansible_apparmor": {"status": "disabled"}, "ansible_architecture": "x86_64", "ansible_bios_date": "02/27/2020", "ansible_bios_version": "3.3", "ansible_br_ex": {"active": false, "device": "br-ex", "features": {"esp_hw_offload": "off [fixed]", "esp_tx_csum_hw_offload": "off [fixed]", "fcoe_mtu": "off [fixed]", "generic_receive_offload": "on", "generic_segmentation_offload": "on", "highdma": "on", "hw_tc_offload": "off [fixed]", "l2_fwd_offload": "off [fixed]", "large_receive_offload": "off [fixed]", "loopback": "off [fixed]", "netns_local": "off [fixed]", "ntuple_filters": "off [fixed]", "receive_hashing": "off [fixed]", "rx_all": "off [fixed]", "rx_checksumming": "off [fixed]", "rx_fcs": "off [fixed]", "rx_gro_hw": "off [fixed]", "rx_gro_list": "off", "rx_udp_tunnel_port_offload": "off [fixed]", "rx_vlan_filter": "off [fixed]", "rx_vlan_offload": "off [fixed]", "rx_vlan_stag_filter": "off [fixed]", "rx_vlan_stag_hw_parse": "off [fixed]", "scatter_gather": "on", "tcp_segmentation_offload": "on", "tls_hw_record": "off [fixed]", "tls_hw_rx_offload": "off [fixed]", .... .... END PLAY RECAP ******************************************************************************************************************************************************************************************* 192.168.75.144 : ok=2 changed=0 unreachable=1 failed=0 skipped=0 rescued=0 ignored=0 Command failed ansible-playbook -i /etc/kolla/multinode -e @/etc/kolla/globals.yml -e @/etc/kolla/passwords.yml -e CONFIG_DIR=/etc/kolla --tags nova-cell --limit 192.168.75.144 -e kolla_action=deploy /usr/local/share/kolla-ansible/ansible/site.yml