Apply configuration changes using securityadmin.sh

The security plugin stores its configuration—including users, roles, and permissions—in an index on the OpenSearch cluster (.opendistro_security). Storing these settings in an index lets you change settings without restarting the cluster and eliminates the need to edit configuration files on every single node.

After changing any of the configuration files in plugins/opensearch-security/securityconfig, however, you must run plugins/opensearch-security/tools/securityadmin.sh to load these new settings into the index. You must also run this script at least once to initialize the .opendistro_security index and configure your authentication and authorization methods.

After the .opendistro_security index is initialized, you can use OpenSearch Dashboards to manage your users, roles, and permissions.

Configure the admin certificate

You can configure all certificates that should have admin privileges in opensearch.yml by specifying respective distinguished names (DNs). If you use the demo certificates, for example, you can use the kirk certificate:

plugins.security.authcz.admin_dn:
  - CN=kirk,OU=client,O=client,L=test,C=DE

You can’t use node certificates as admin certificates. The two must be separate. Also, do not use any whitespace between the parts of the DN.

Basic usage

The securityadmin.sh tool can be run from any machine that has access to the transport port of your OpenSearch cluster (the default is 9300). You can change the security plugin configuration without having to access your nodes through SSH.

Each node also includes the tool at plugins/opensearch-security/tools/securityadmin.sh. You might need to make the script executable before running it:

chmod +x plugins/opensearch-security/tools/securityadmin.sh

To print all available command line options, run the script with no arguments:

./plugins/opensearch-security/tools/securityadmin.sh

To load configuration changes to the security plugin, you must provide your admin certificate to the tool:

./securityadmin.sh -cd ../securityconfig/ -icl -nhnv \
   -cacert ../../../config/root-ca.pem \
   -cert ../../../config/kirk.pem \
   -key ../../../config/kirk-key.pem

• The -cd option specifies where the security plugin configuration files to upload to the cluster can be found.
• The -icl (--ignore-clustername) option tells the security plugin to upload the configuration regardless of the cluster name. As an alternative, you can also specify the cluster name with the -cn (--clustername) option.
• Because the demo certificates are self-signed, we also disable hostname verification with the -nhnv (--disable-host-name-verification) option.
• The -cacert, -cert and -key options define the location of your root CA certificate, the admin certificate, and the private key for the admin certificate. If the private key has a password, specify it with the -keypass option.

The following table shows the PEM options.

Sample commands

Apply configuration in securityconfig using PEM certificates:

/usr/share/opensearch/plugins/opensearch-security/tools/securityadmin.sh -cacert /etc/opensearch/root-ca.pem -cert /etc/opensearch/kirk.pem -key /etc/opensearch/kirk-key.pem -cd /usr/share/opensearch/plugins/opensearch-security/securityconfig/

Apply configuration from a single file (config.yml) using PEM certificates:

./securityadmin.sh -f ../securityconfig/config.yml -icl -nhnv -cert /etc/opensearch/kirk.pem -cacert /etc/opensearch/root-ca.pem -key /etc/opensearch/kirk-key.pem -t config

Apply configuration in securityconfig with keystore and truststore files:

./securityadmin.sh \
   -cd /usr/share/opensearch/plugins/opensearch-security/securityconfig/ \
   -ks /path/to/keystore.jks \
   -kspass changeit \
   -ts /path/to/truststore.jks \
   -tspass changeit
   -nhnv
   -icl

Using securityadmin with keystore and truststore files

You can also use keystore files in JKS format in conjunction with securityadmin.sh:

./securityadmin.sh -cd ../securityconfig -icl -nhnv
  -ts <path/to/truststore> -tspass <truststore password>
  -ks <path/to/keystore> -kspass <keystore password>

Use the following options to control the key and truststore settings.

OpenSearch settings

If you run a default OpenSearch installation, which listens on transport port 9300 and uses opensearch as a cluster name, you can omit the following settings altogether. Otherwise, specify your OpenSearch settings by using the following switches.

Certificate validation settings

Use the following options to control certificate validation.

Configuration files settings

The following switches define which configuration files you want to push to the security plugin. You can either push a single file or specify a directory containing one or more configuration files.

To upload all configuration files in a directory, use this:

./securityadmin.sh -cd ../securityconfig -ts ... -tspass ... -ks ... -kspass ...

If you want to push a single configuration file, use this:

./securityadmin.sh -f ../securityconfig/internal_users.yml -t internalusers  \
    -ts ... -tspass ... -ks ... -kspass ...

The file type must be one of the following:

• config
• roles
• rolesmapping
• internalusers
• actiongroups

Cipher settings

You probably won’t need to change cipher settings. If you need to, use the following options.

Backup, restore, and migrate

You can download all current configuration files from your cluster with the following command:

./securityadmin.sh -backup /file/path -ts ... -tspass ... -ks ... -kspass ...

This command dumps the current security plugin configuration from your cluster to individual files in the directory you specify. You can then use these files as backups or to load the configuration into a different cluster. This command is useful when moving a proof-of-concept to production:

./securityadmin.sh -backup ~ -icl -nhnv -cacert ../../../config/root-ca.pem -cert ../../../config/kirk.pem -key ../../../config/kirk-key.pem

To upload the dumped files to another cluster:

./securityadmin.sh -h production.example.com -p 9301 -cd /etc/backup/ -ts ... -tspass ... -ks ... -kspass ...

To migrate configuration YAML files from the OpenSearch 0.x.x format to the 1.x.x format:

./securityadmin.sh -migrate ../securityconfig -ts ... -tspass ... -ks ... -kspass ...

Other options