Hammer commands throws error "undefined method `closed?' for nil:NilClass"

Solution Verified - Updated 14 Jun 2024

Environment

Satellite 6.2.13
Satellite 6.2.14

Issue

Hammer commands throws an error:

[root@satellite ~]# hammer host-collection list
Error: undefined method `closed?' for nil:NilClass

Trying hammer with debug logging on shows:

[root@satellite ~]# hammer -d host-collection list --organization=MyOrg
[ INFO 2018-01-22 13:57:42 Init] Initialization of Hammer CLI (0.5.1.13) has started...
[DEBUG 2018-01-22 13:57:42 Init] Running at ruby 2.2.2-p95
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli_config.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/csv.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_admin.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_admin_logging_core.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_admin_logging_katello.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_bootdisk.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_discovery.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_docker.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_remote_execution.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_tasks.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/import.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /etc/hammer/cli.modules.d/katello.yml has been loaded
[ INFO 2018-01-22 13:57:42 Init] Configuration from the file /root/.hammer/cli_config.yml has been loaded
[DEBUG 2018-01-22 13:57:42 Connection] Registered: foreman
[DEBUG 2018-01-22 13:57:42 API] Global headers: {
        :content_type => "application/json",
              :accept => "application/json;version=2",
    "Accept-Language" => "en"
}
[DEBUG 2018-01-22 13:57:42 API] Follow redirects: never
[ INFO 2018-01-22 13:57:43 Modules] Extension module hammer_cli_foreman (0.5.1.10) loaded
[ INFO 2018-01-22 13:57:43 Modules] Extension module hammer_cli_foreman_admin (0.0.5) loaded
[ INFO 2018-01-22 13:57:43 Modules] Extension module hammer_cli_foreman_bootdisk (0.1.3.3) loaded
[ INFO 2018-01-22 13:57:43 Modules] Extension module hammer_cli_foreman_discovery (0.0.2.3) loaded
[ INFO 2018-01-22 13:57:43 Modules] Extension module hammer_cli_import (0.11.2) loaded
[ INFO 2018-01-22 13:57:43 HammerCLI::MainCommand] subcommand organization (HammerCLIForeman::Organization) was removed.
[ INFO 2018-01-22 13:57:43 HammerCLI::MainCommand] subcommand organization (HammerCLIKatello::Organization) was created.
[ INFO 2018-01-22 13:57:44 Modules] Extension module hammer_cli_katello (0.0.22.29) loaded
[DEBUG 2018-01-22 13:57:44 Init] Using locale 'en'
[DEBUG 2018-01-22 13:57:44 Init] 'mo' files for locale domain 'hammer-cli' loaded from '/opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli-0.5.1.13/locale'
[DEBUG 2018-01-22 13:57:44 Init] 'mo' files for locale domain 'hammer-cli-foreman' loaded from '/opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/locale'
[DEBUG 2018-01-22 13:57:44 Init] 'mo' files for locale domain 'hammer-cli-csv' loaded from '/opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_csv-2.2.1.1/locale'
[DEBUG 2018-01-22 13:57:44 Init] 'mo' files for locale domain 'hammer_cli_foreman_docker' loaded from '/opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman_docker-0.0.6/locale'
[DEBUG 2018-01-22 13:57:44 Init] 'mo' files for locale domain 'hammer-cli-katello' loaded from '/opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_katello-0.0.22.29/locale'
[ INFO 2018-01-22 13:57:44 HammerCLI::MainCommand] Called with options: {"option_debug"=>true}
[ INFO 2018-01-22 13:57:44 HammerCLIKatello::HostCollection] Called with options: {}
[ INFO 2018-01-22 13:57:44 HammerCLIKatello::HostCollection::ListCommand] Called with options: {"option_organization_name"=>"MyOrg"}
[ INFO 2018-01-22 13:57:44 API] Server: https://satellite.example.com/
[ INFO 2018-01-22 13:57:44 API] GET /katello/api/organizations
[DEBUG 2018-01-22 13:57:44 API] Params: {
    :search => "name = \"MyOrg\""
}
[DEBUG 2018-01-22 13:57:44 API] Headers: {
    :params => {
        :search => "name = \"MyOrg\""
    }
}
[ERROR 2018-01-22 13:57:44 Exception] Error: undefined method `closed?' for nil:NilClass
Error: undefined method `closed?' for nil:NilClass
[ERROR 2018-01-22 13:57:44 Exception]

NoMethodError (undefined method `closed?' for nil:NilClass):
    /opt/rh/rh-ruby22/root/usr/share/ruby/net/http/response.rb:329:in `stream_check'
    /opt/rh/rh-ruby22/root/usr/share/ruby/net/http/response.rb:199:in `read_body'
    /opt/rh/rh-ruby22/root/usr/share/ruby/net/http/response.rb:226:in `body'
    /opt/theforeman/tfm/root/usr/share/gems/gems/apipie-bindings-0.0.16/lib/apipie_bindings/api.rb:375:in `process_data'
    /opt/theforeman/tfm/root/usr/share/gems/gems/apipie-bindings-0.0.16/lib/apipie_bindings/api.rb:229:in `rescue in http_call'
    /opt/theforeman/tfm/root/usr/share/gems/gems/apipie-bindings-0.0.16/lib/apipie_bindings/api.rb:220:in `http_call'
    /opt/theforeman/tfm/root/usr/share/gems/gems/apipie-bindings-0.0.16/lib/apipie_bindings/api.rb:174:in `call_action'
    /opt/theforeman/tfm/root/usr/share/gems/gems/apipie-bindings-0.0.16/lib/apipie_bindings/api.rb:169:in `call'
    /opt/theforeman/tfm/root/usr/share/gems/gems/apipie-bindings-0.0.16/lib/apipie_bindings/resource.rb:14:in `call'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/id_resolver.rb:186:in `resolved_call'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/id_resolver.rb:172:in `find_resource_raw'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/id_resolver.rb:166:in `find_resource'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/id_resolver.rb:143:in `get_id'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/id_resolver.rb:133:in `block (2 levels) in define_id_finders'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/commands.rb:154:in `get_resource_id'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/commands.rb:223:in `block in customized_options'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/commands.rb:220:in `each'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/commands.rb:220:in `customized_options'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/commands.rb:244:in `request_params'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli-0.5.1.13/lib/hammer_cli/apipie/command.rb:43:in `send_request'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/commands.rb:190:in `send_request'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/commands.rb:280:in `send_request'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/commands.rb:315:in `retrieve_all'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli_foreman-0.5.1.10/lib/hammer_cli_foreman/commands.rb:299:in `execute'
    /opt/theforeman/tfm/root/usr/share/gems/gems/clamp-1.0.0/lib/clamp/command.rb:68:in `run'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli-0.5.1.13/lib/hammer_cli/abstract.rb:24:in `run'
    /opt/theforeman/tfm/root/usr/share/gems/gems/clamp-1.0.0/lib/clamp/subcommand/execution.rb:11:in `execute'
    /opt/theforeman/tfm/root/usr/share/gems/gems/clamp-1.0.0/lib/clamp/command.rb:68:in `run'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli-0.5.1.13/lib/hammer_cli/abstract.rb:24:in `run'
    /opt/theforeman/tfm/root/usr/share/gems/gems/clamp-1.0.0/lib/clamp/subcommand/execution.rb:11:in `execute'
    /opt/theforeman/tfm/root/usr/share/gems/gems/clamp-1.0.0/lib/clamp/command.rb:68:in `run'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli-0.5.1.13/lib/hammer_cli/abstract.rb:24:in `run'
    /opt/theforeman/tfm/root/usr/share/gems/gems/clamp-1.0.0/lib/clamp/command.rb:133:in `run'
    /opt/theforeman/tfm/root/usr/share/gems/gems/hammer_cli-0.5.1.13/bin/hammer:125:in `'
    /bin/hammer:23:in `load'

Resolution

Backup Satellite server

Rerun Satellite installer

# satellite-installer --scenario satellite --upgrade

Restart Service
```
# katello-service restart
```
Check network configuration to ensure hammer can connect to Satellite loopback interface on ports 80/443

If above steps did not help then check ENV variables for proxy as-

# env | grep -i proxy
HTTPS_PROXY=https://<proxy-ip>:<proxy-port>
HTTP_PROXY=http://<proxy-ip>:<proxy-port>

Note: un-setting above HTTPS_PROXY and HTTP_PROXY environment variables will allow hammer to communicate to the Satellite host.

For more KB articles/solutions related to Red Hat Satellite 6.x hammer Issues, please refer to the Consolidated Troubleshooting Article for Red Hat Satellite 6.x hammer-related Issues

Root Cause

Hammer is a front end for Satellite's REST API. It makes request to the REST API using the Satellite server's loopback interface. If for some reason, hammer cannot acquire the @socket, @socket will have nil type which throws the above exception.
There are multiple potential causes for this issue, such as:
- The satellite-installer failed
- Improper proxy configuration prevents hammer from acquiring socket on loopback interface
- Improper firewall configuration prevents hammer from acquiring socket on loopback interface
- Improper SSL configuration prevents hammer from acquiring socket on loopback interface
- HTTPS_PROXY/HTTP_PROXY environment variable is set due to which hammer is unable to communicate to Satellite

Diagnostic Steps

Satellite installer log /var/log/foreman-installer/satellite.log shows errors like:

[DEBUG 2018-01-16 11:07:36 main] Hook /usr/share/katello-installer-base/hooks/post/10-post_install.rb returned nil
[ INFO 2018-01-16 11:07:36 main] pulp.conf is already present, skipping
[DEBUG 2018-01-16 11:07:36 main] Hook /usr/share/katello-installer-base/hooks/post/29-create_package_httpd_conf.rb returned ["ssl.conf", "pulp.conf"]
[ERROR 2018-01-16 11:07:36 main] Upgrade failed during the installation phase. Fix the error and re-run the upgrade.
[DEBUG 2018-01-16 11:07:36 main] Hook /usr/share/katello-installer-base/hooks/post/30-upgrade.rb returned [<Logging::Logger:0x154fdfc name="main">, <Logging::Logger:0x1555220 name="fatal">]
[ INFO 2018-01-16 11:07:36 main] All hooks in group post finished
[DEBUG 2018-01-16 11:07:36 main] Exit with status code: 6 (signal was 6)
[ERROR 2018-01-16 11:07:36 main] Errors encountered during run:
[ERROR 2018-01-16 11:07:36 main]  /Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[satellite.example.com]: Could not evaluate: Proxy satellite.example.com cannot be registered (undefined method `closed?' for nil:NilClass): N/A
[ERROR 2018-01-16 11:07:36 main]  /Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[satellite.example.com]: Failed to call refresh: Proxy satellite.example.com cannot be registered (Proxy satellite.example.com cannot be registered (undefined method `closed?' for nil:NilClass): N/A): N/A
[ERROR 2018-01-16 11:07:36 main]  /Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[satellite.example.com]: Proxy satellite.example.com cannot be registered (Proxy satellite.example.com cannot be registered (undefined method `closed?' for nil:NilClass): N/A): N/A
[ERROR 2018-01-16 11:07:36 main]  Report processor failed: Could not send report to Foreman at https://satellite.example.com/api/reports: 502 "Bad Gateway"

SBR

SysMgmt

Product(s)

Red Hat Satellite

Category

Troubleshoot

Tags

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