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setup-cluster

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Description

Deploy a SingleStoreDB cluster across multiple hosts

This command conveniently runs various sdb-toolbox-config, sdb-deploy, and sdb-admin commands as a single command to produce a functional SingleStoreDB cluster that can be connected to and queried.

The --password flag is required and specifies the SingleStoreDB root password on each node. Note that the MEMSQL_PASSWORD environment variable is a safer alternative option for setting the password.

If you would instead like to set up a local SingleStoreDB "cluster" for testing purposes, see sdb-deploy cluster-in-a-box.

Examples 

sdb-deploy setup-cluster \
  --master-host user@host1:33 \
  --aggregator-hosts host2 \
  --leaf-hosts host3,host4 \
  --identity-file ~/my_key.pem \
  --license AAAAAAa/Aaa/AA== \
  --password testpass

This will install the latest released version of singlestoredb-server on each host and deploy a Master Aggregator on host1; a child aggregator on host2; and leaf nodes on host3 and host4. These hosts must be accessible via SSH using the current user and the key ~/my_key.pem. A valid license and password for the SingleStoreDB root user are also required. If you set a MEMSQL_LICENSE environment variable, you can omit the --license flag.

"High Availability" mode is enabled by default. To disable it, set --high-availability to false:

sdb-deploy setup-cluster --master-host host1 ... --high-availability=false

The command will deploy SingleStoreDB on port 3306 on each node by default. To configure it to a different port, set --memsql-port:

sdb-deploy setup-cluster --master-host host1 ... --memsql-port 3307

If you want to install a version other than the latest released version, you can specify a different released version, or the path to a singlestoredb-server package:

sdb-deploy setup-cluster --master-host host1 ... --version 6.7.0
sdb-deploy setup-cluster --master-host host1 ... --file-path path/to/singlestoredb-server.deb
sdb-deploy setup-cluster --master-host host1 ... --file-path path/to/singlestoredb-server.rpm

If you need to specify a host's SSH user or SSH port, you can add the information to the host descriptor:

sdb-deploy setup-cluster --master-host admin@host1:10022 --leaf-hosts admin@host2:10022,admin@host3:10022 ...

If you want to use a YAML file to define your cluster you can do so by using the --cluster-file flag which takes in the path to a YAML file as input. Note that you have to give all the configurations as part of the cluster file and cannot use any other flag along with --cluster-file. If you want to learn about creating a cluster file please refer to YAML File Configuration.

Usage of the command with --cluster-file flag:

sdb-deploy setup-cluster --cluster-file path/to/cluster-file.yml

YAML File Configuration

As of SingleStoreDB Toolbox 1.3.0, the sdb-deploy setup-cluster command now accepts YAML configuration files, and validates the configuration file format before attempting to set up the specified cluster.

The command is designed to be consistent, where re-running the sdb-deploy setup-cluster command with the same cluster file will always produce the same cluster. It is also resilient, allowing errors encountered at any stage of the cluster construction process to be corrected, and sdb-deploy setup-cluster re-run, in order to generate the desired cluster.

Steps for using a Configuration File

  1. Install SingleStoreDB Toolbox onto the main deployment host.

  2. Using the template below, create a YAML file with your desired cluster configuration.

    license: <license-from-portal.singlestore.com>
    memsql_server_version: <version>
    package_type: <type>                          ← rpm, deb, or tar
    hosts:
    - hostname: <ip-address>
      localhost: true
      nodes:
      - register: false
        role: Master
        config:
          password: <secure-password>
          port: 3306
      - register: false
        role: Leaf
        config:
          password: <secure-password>
          port: 3307

  3. Run the following with the path to the YAML file as input.

    sdb-deploy setup-cluster --cluster-file <path-to-cluster-file>

Note: By default, the sdb-deploy setup-cluster command configures the host's operating system per SingleStore's recommendations. To disable this auto-configuration, add the --skip-auto-config=true option to the hosts field in the YAML configuration file.

Complete Cluster File Template

license:                           <LICENSE | /path/to/LICENSE-file> [Required to bootstrap Master Aggregator]
high_availability:                 <true | false>
memsql_server_version:             <the version of memsql you want to install (6.7+)>
memsql_server_file_path:           <path to the downloaded memsql server file>
memsql_server_preinstalled_path:   <equivalent to using the '--preinstalled-path' option;
                                   the path to the unpacked singlestoredb-server file
                                   where the unpacked folder name must be of the form
                                   'singlestoredb-server-<version>*' or
                                   'memsql-server-<version>*'>
skip_install:                      <true | false> [ADVANCED]
skip_validate_env:                 <true | false> [ADVANCED]
allow_duplicate_host_fingerprints: <true | false> [ADVANCED]
assert_clean_state:                <true | false> [ADVANCED]
package_type:                      <deb | rpm | tar> [Required if multiple package present]
root_password:                     <default password to be used for all nodes>
optimize:                          <true | false>
optimize_config:
  memory_percentage:               <percentage of memory you want memsql to use>
  no_numa:                         <true | false>
sync_variables:                    [ADVANCED]
  <variable's name>:               <variable's value>            
hosts:
- hostname:                        <host-name> [Required]
  localhost:                       <true | false> 
  skip_auto_config:                <true | false>
  memsqlctl_path:                  <path to memsqlctl> [ADVANCED]
  memsqlctl_config_path:           <path to memsqlctl config> [ADVANCED]
  tar_install_dir:                 <path to tar install dir> [ADVANCED]
  tar_install_state:               <path to tar install state> [ADVANCED]
  ssh:                             [Required for remote Hosts]
    host:                          <ssh host name>
    port:                          <ssh port>
    user:                          <ssh user>
    private_key:                   <path to your identity key>
  nodes:
  - register:                      <true | false>
    force_registration:            <true | false> [ADVANCED] 
    role:                          <Unknown | Master | Leaf | Aggregator> (case sensitive) [Required]
    availability_group:            <availability group>
    no_start:                      <true | false>
    config: 
      auditlogsdir:                <path to auditlogs directory> [ADVANCED]
      baseinstalldir:              <path to base install directory> [ADVANCED]
      configpath:                  <path to configuration path> [ADVANCED] [Required if register is true]
      datadir:                     <path to data directory> [ADVANCED]
      disable_auto_restart:        <true | false>
      password:                    <password>
      plancachedir:                <path to plancache directory> [ADVANCED]
      port:                        <port number> [Required for node creation]
      tracelogsdir:                <path to tracelogs directory> [ADVANCED]
      bind_address:                <bind address> [ADVANCED]
      ssl_fips_mode:               <true | false > [ADVANCED]
    variables:
      <variable's name>:           <variable's value>

Example Cluster Files

The following cluster file template examples can be used to set up a cluster.

Copy an example into an example.yaml file and pass this file to the sdb-deploy setup-cluster command.

sdb-deploy setup-cluster --cluster-file example.yaml

Note: Depending on how you installed SingleStoreDB Toolbox (for example, via tarball-based install, you may need to include the full path to the cluster file.

./sdb-deploy setup-cluster --cluster-file /full-path/example.yaml

For Example 2, Example 3, and Example 4, you will need multiple hosts and the ability to ssh into each host from the main deployment host.

Example 1

license: <license-from-portal.singlestore.com>
memsql_server_version: 7.3.10
package_type: rpm
hosts:
- hostname: 127.0.0.1
  localhost: true
  nodes:
  - register: false
    role: Master
    config:
      password: <secure-password>
      port: 3306
  - register: false
    role: Leaf
    config:
      password: <secure-password>
      port: 3307

Using this cluster file, sdb-deploy setup-cluster:

  1. Registers a local host to the cluster.

  2. Installs singlestoredb-server v7.3.10 on this local host.

  3. Creates a Master Aggregator node on port 3306.

  4. Creates a leaf node on port 3307.

Example 2

license: <license-from-portal.singlestore.com>
memsql_server_version: 7.3.10
package_type: rpm
hosts:
- hostname: <hostname1>
  localhost: true
- hostname: <hostname2>
  ssh: 
    host: <cluster-addressable-hostname>
    private_key: <path/to/private-key>

Using this cluster file, sdb-deploy setup-cluster:

  1. Registers a local host to the cluster.

  2. Registers a remote host to the cluster using the provided ssh credentials.

  3. Installs singlestoredb-server v7.3.10 on both hosts.

Example 3

license: <license-from-portal.singlestore.com>
memsql_server_version: 7.3.10
package_type: rpm                
hosts:
- hostname: <hostname1>
  localhost: true
  nodes:
  - register: false
    role: Master
    config:
      password: <secure-password>
      port: 3306
  - register: false
    role: Leaf
    config:
      password: <secure-password>
      port: 3307
- hostname: <hostname2>
  ssh: 
    host: <cluster-addressable-hostname>
    private_key: <path/to/private-key>
  nodes:
  - register: false
    role: Aggregator
    config:
      password: <secure-password>
      port: 3306
  - register: false
    role: Leaf
    config:
      password: <secure-password>
      port: 3307

Using this cluster file, sdb-deploy setup-cluster:

  1. Registers a local host to the cluster.

  2. Register a remote host to the cluster using the provided ssh credentials.

  3. Installs singlestoredb-server v7.3.10 on both the hosts.

  4. On Host 1, creates a node on port 3306, bootstraps it as the Master Aggregator using the specified license, and sets the password to the value provided in the cluster file.

  5. On Host 1, creates a node on port 3307, assign it as a leaf node, and sets the password to the value provided in the cluster file.

  6. On Host 2, creates a node on port 3306, assign it as a Child Aggregator, and sets the password to the value provided in the cluster file.

  7. On Host 2, creates a node on port 3307, assign it as a leaf node, and sets the password to the value provided in the cluster file.

Example 4

license: <license-from-portal.singlestore.com>
high_availability: true
package_type: rpm
memsql_server_file_path: /home/ec2-user/singlestoredb-server-7.3.10-5aa7127018.x86_64.rpm
hosts:
- hostname: <hostname1>
  localhost: true
  nodes:
  - role: Master
    config:
      password: <secure-password>
      port: 3306
- hostname: <hostname2>
  ssh:
    host: <cluster-addressable-hostname>
    private_key: <path/to/private-key>
  nodes:
  - role: Aggregator
    config:
      password: <secure-password>
- hostname: <hostname3>
  ssh:
    host: <cluster-addressable-hostname>
    private_key: <path/to/private-key>
  nodes:
  - role: Aggregator
    config:
      password: <secure-password>      
- hostname: <hostname4>
  ssh:
    host: <cluster-addressable-hostname>
    private_key: <path/to/private-key>
  nodes:
  - role: Leaf
    availability_group: 1  
    config:
      password: <secure-password>      
- hostname: <hostname5>
  ssh:
    host: <cluster-addressable-hostname>
    private_key: <path/to/private-key>    
  nodes:
  - role: Leaf
    availability_group: 1
    config:
      password: <secure-password>
- hostname: <hostname6>
  ssh:
    host: <cluster-addressable-hostname>
    private_key: <path/to/private-key>    
  nodes:
  - role: Leaf
    availability_group: 2
    config:
      password: <secure-password>  
- hostname: <hostname7>
  ssh:
    host: <cluster-addressable-hostname>
    private_key: <path/to/private-key>    
  nodes:
  - role: Leaf
    availability_group: 2
    config:
      password: <secure-password>

Using this cluster file, sdb-deploy setup-cluster:

  1. Enables high availability.

  2. Specifies the use of RPM packages.

  3. Specifies the location of the singlestoredb-server package which will be used directly instead of downloaded.

  4. Installs singlestoredb-server v7.3.10 on all hosts.

  5. On Host 1, creates a node on port 3306, bootstraps it as the Master Aggregator using the specified license, and sets the password to the value provided in the cluster file.

  6. On Host 2, creates a node on the default port (3306), assign it as a Child Aggregator, and sets the password to the value provided in the cluster file.

  7. On Host 3, creates a node on the default port (3306), assign it as a Child Aggregator, and sets the password to the value provided in the cluster file.

  8. On Host 4, creates a node on the default port (3306), assign it as a leaf node, sets the node’s availability group to 1, and sets the password to the value provided in the cluster file.

  9. On Host 5, creates a node on the default port (3306), assign it as a leaf node, sets the node’s availability group to 1, and sets the password to the value provided in the cluster file.

  10. On Host 6, creates a node on the default port (3306), assign it as a leaf node, sets the node’s availability group to 2, and sets the password to the value provided in the cluster file.

  11. On Host 7, creates a node on the default port (3306), assign it as a leaf node, sets the node’s availability group to 2, and sets the password to the value provided in the cluster file.

Example 5

license: <license-from-portal.singlestore.com>
memsql_server_version: 8.0.5
package_type: deb
sync_variables:
  geo_sphere_radius: 10000.66
  cluster_name: <cluster-name>   
hosts:
- hostname: <hostname1>
  localhost: true
  nodes:
  - register: false
    role: Master
    config:
      password: <secure-password>
      port: 3306
  - register: false
    role: Leaf
    config:
      password: <secure-password>
      port: 3307
- hostname: <hostname2>
  ssh: 
    host: <cluster-addressable-hostname>
    private_key: <path/to/private-key>
  nodes:
  - register: false
    role: Aggregator
    config:
      password: <secure-password>
      port: 3306
  - register: false
    role: Leaf
    config:
      password: <secure-password>
      port: 3307
    variables:
      http_api_pool_capacity: 4048
      allow_unsupported_filesystem: ON

Using this cluster file, sdb-deploy setup-cluster:

  1. Registers a local host to the cluster.

  2. Register a remote host to the cluster using the provided ssh credentials.

  3. Installs singlestoredb-server v8.0.5 on both hosts.

  4. On Host 1, creates a node on port 3306, bootstraps it as the Master Aggregator using the specified license, and sets the password to the value provided in the cluster file.

  5. On Host 1, creates a node on port 3307, assign it as a leaf node, and sets the password to the value provided in the cluster file.

  6. On Host 2, creates a node on port 3306, assign it as a Child Aggregator, and sets the password to the value provided in the cluster file.

  7. On Host 2, creates a node on port 3307, assign it as a leaf node, sets http_api_pool_capacity and allow_unsupported_filesystem variables to values provided in the cluster file, and sets the password to the value provided in the cluster file.

  8. Sets geo_sphere_radius and cluster_name sync variables to values provided in the cluster file.

Definitions

The following is a detailed explanation of each field that can be configured in the cluster file.

CLUSTER

Option

Description

allow_duplicate_host_fingerprints

When set to true, Toolbox allows hosts to have the same ssh fingerprints.

assert_clean_state

When set to true, Toolbox verifies that no nodes currently exist in the cluster.

high_availability

This enables high availability on your cluster. This will only work if there are an even number of leaves on your cluster. The default value is false if not specified. If set to true, each node may be assigned an availability group via the availability_group field. Refer to Managing High Availability for more information.

license

The license that will be used for the cluster. You can obtain a free or existing license from the Cloud Portal. Your license will be used to bootstrap a Master Aggregator (MA).

optimize

When set to true, optimizes memory usage for the cluster with the recommended memory percentage. Also optimizes for NUMA.

optimize_config

Includes two fields that can change how the cluster is optimized. The memory_percentage option dictates the percentage of memory that SingleStoreDB uses on each host. If the no_numa option is set to true, the NUMA optimization on the cluster will not be performed.

root_password

The default password for all the nodes if a password is not specified in the node password field. Required if a node-level password is not specified.

skip_install

When set to true, Toolbox skips the installation of singlestoredb-server. This can be useful for cases such as migration, where each host requires a custom installation.

skip_validate_env

When set to true, Toolbox will perform cluster setup without validating the environment.

sync_variables

The list of sync variables that will be set on the Master Aggregator node.

The following two options are related to the version of SingleStoreDB that will be installed for your cluster. Either option can be specified. If neither option is specified, the latest version of singlestoredb-server is installed.

Option

Description

memsql_server_version

The desired version of singlestoredb-server will be downloaded and installed cluster-wide.

memsql_server_file_path

Installs version of singlestoredb-server package specified by the path to the singlestoredb-server package.

package_type

The package type to use for the installation: rpm, deb, or tar. A package type of tar will only be used if explicitly specified. If the host has only one package manager for either .rpm or .deb packages, sdb-deploy setup-cluster will use the associated package manager. If multiple package managers are available on a host, this option is required.

HOST

Option

Description

hostname

The cluster-addressable hostname of this host. If only one, local host is available, use 127.0.0.1.

localhost

Use this option to specify that the target host is localhost. The default value is false if not specified. If provided, localhost commands do not require ssh access.

memsqlctl_path

The path to the memsqlctl binary on the target host. Only required if a custom installation of singlestoredb-server was performed.

memsqlctl_config_path

The path to the memsqlctl.hcl file on the target host. Only required if a custom installation of singlestoredb-server was performed.

skip_auto_config

When set to true, Toolbox will not configure system settings on the hosts.

tar_install_dir

The directory to use for tarball-based installs on the target host. The default value is $homedir/memsql if not specified and a tarball-based install is performed.

tar_install_state

The path to the packages.hcl file on the target host. This option must only be used in conjunction with tar_install_dir.

The following ssh-related fields are required for remote hosts:

Option

Description

host

The ssh hostname.

port

The ssh port (default: 22).

private_key

The identity file for the host (typically found in ~<user>/.ssh

user

The ssh user for the host.

NODE

Option

Description

availability_group

The availability group to assign to the node when high_availability is set to true. Refer to Availability Groups for more information.

force_registration

When set to true, allows Toolbox to register offline nodes.

no_start

If set to true, the node will not be started after creation. This option is not valid if register is set to true.

register

Set the value of this field to false to create a new node. Set the value to true if the node is already present and you want to register it to SingleStoreDB Toolbox. The configpath field and value are also required when register is set to true. Do not set this value to true to create a new node.

role

The role of the current node, which is one of Master, Leaf, Aggregator, or Unknown. Do not use this option with the register option.

variables

The list of local variables that will be set on the node before the node starts.

CONFIG

Option

Description

auditlogsdir

The absolute path to the auditlogs directory. If register is set to true, this option must be specified in the configuration file.

baseinstalldir

The absolute path to the base install directory. This option is only available when creating a node.

configpath

The absolute path to the node’s configuration file. If register is set to true, this option must be specified in the configuration file.

datadir

The absolute path to the node’s data directory. If register is set to true, this option must be specified in the configuration file.

default install dir

When a node is created, its associated data and directories will be tied to a base install directory known as the default install dir. The directory’s name is a randomly-generated UUID. Run memsqlctl env to determine where the default install dir is on a host. Note that the singlestoredb-server.rpm and .deb packages configure the default install dir to be /var/lib/memsql. If you prefer to configure a node’s directories, update the following auditlogsdir, baseinstalldir, configpath, datadir, plancachedir, and tracelogsdir fields.

disable_auto_restart

If set to true, the node will not be restarted automatically if it crashes. This option is not valid if register is set to true.

password

The SingleStoreDB password for the node.

plancachedir

The absolute path to the plancache directory. If register is set to true, this option must be specified in the configuration file.

port

The port that this node uses on its host. Ensure that all the nodes on a host are set to different ports. The default port is 3306. A new port must be specified if port 3306 is already in use.

ssl_fips_mode

When set to true, enables SSL/TLS FIPS mode on the node. To enable for the entire cluster, this parameter must be set to true on each node.

tracelogsdir

The absolute path to the tracelogs directory. If register is set to true, this option must be specified in the configuration file.

Host File Structure

For large clusters, you can specify all of your hosts' SSH information through an INI file that you reference using the --host-file flag. The format is below.

[master]
[ssh_user@]<master_host_IP_address|DNS_name>[:ssh_port]


[aggregators]
[ssh_user@]<agg_host1_IP_address|DNS_name>[:ssh_port]
...


[leaves]
[ssh_user@]<leaf_host1_IP_address|DNS_name>[:ssh_port]
...

Usage

Usage:
  sdb-deploy setup-cluster [flags]


  For flags that can accept multiple values (indicated by VALUES after the name of the flag),
  separate each value with a comma.


Flags:
      --aggregator-hosts strings               SSH addresses of the child aggregator hosts
      --allow-duplicate-host-fingerprints      Whether to allow hosts with identical SSH host keys. (ADVANCED)
      --allow-ipv6                             Sets allow_ipv6 to true for all nodes in cluster
      --base-install-dir ABSOLUTE_PATH         The absolute path to the base install directory for all the nodes
      --cluster-file FILE_PATH                 The path to the cluster definition file
      --data-dir ABSOLUTE_PATH                 The absolute path to the data directory for all the nodes
      --file-path ABSOLUTE_PATH                The full path, including the filename, of the singlestoredb-server package to install
      --force-package-format {deb, rpm, tar}   Specify 'deb', 'rpm', or 'tar' package format. Required if you have both dpkg and rpm package managers found on the host
  -h, --help                                   Help for setup-cluster
      --high-availability                      Indicate whether to deploy the cluster in high-availability mode (default true)
      --hosts-file ABSOLUTE_PATH               The file specifying the host addresses/hostnames for the Master Aggregator, child aggregators, and leaf nodes, in INI format with [master], [aggregators], and [leaves] sections
  -i, --identity-file ABSOLUTE_PATH            The identity file to SSH to each host
      --leaf-hosts strings                     SSH addresses/hostnames of each leaf node host. At least one must be specified
      --license LICENSE                        The license for the cluster
      --load-balanced                          Use load_balanced mode for partitioning leaf nodes when high availability is enabled
      --master-host string                     SSH address/hostname of the Master Aggregator host
      --memsql-port PORT                       The port each node will run on
      --password STRING                        The database root user's password. If a password is specified on the command line, it must not contain an unescaped '$' character as it will be replaced by the shell
      --preinstalled-path ABSOLUTE_PATH        The path to the folder (must be of the form 'singlestoredb-server-<version>*' or 'memsql-server-<version>*') that contains the singlestoredb-server binaries. Depending on the mode of cluster deployment, the folder contains either the unpacked tarball file or the installed package file (Debian or RPM) of singlestoredb-server. (ADVANCED)
      --skip-auto-config                       Skip automatic operating system configuration
      --skip-validate-env                      Skip environment validation
      --ssl-fips-mode string                   Whether the cluster operates in OpenSSL/FIPS mode
      --version VERSION                        The version of singlestoredb-server to install (default production:latest)


Global Flags:
      --backup-cache FILE_PATH                 File path for the backup cache
      --cache-file FILE_PATH                   File path for the Toolbox node cache
  -c, --config FILE_PATH                       File path for the Toolbox configuration
      --disable-colors                         Disable color output in console, which some terminal sessions/environments may have difficulty with
      --disable-spinner                        Disable the progress spinner, which some terminal sessions/environments may have issues with
  -j, --json                                   Enable JSON output
      --parallelism POSITIVE_INTEGER           Maximum number of operations to run in parallel
      --runtime-dir DIRECTORY_PATH             Where to store Toolbox runtime data
      --ssh-max-sessions POSITIVE_INTEGER      Maximum number of SSH sessions to open per host, must be at least 3
      --ssh-strict-host-key-checking           Enable strict host key checking for SSH connections
      --ssh-user-known-hosts-file FILE_PATH    Path to the user known_hosts file for SSH connections. If not set, /dev/null will be used
      --state-file FILE_PATH                   Toolbox state file path
  -v, --verbosity count                        Increase logging verbosity: valid values are 1, 2, 3. Usage -v=count or --verbosity=count
  -y, --yes                                    Enable non-interactive mode and assume the user would like to move forward with the proposed actions by default

Remarks

This command is interactive unless you use either --yes or --json flag to override interactive behavior.

Output

The following example uses the setup-cluster command to set up a simple cluster on two different hosts using a hosts file.

hosts file 

[master]
172.18.1.4


[leaves]
172.18.1.5

Setting up a cluster with a hosts file 

sdb-deploy setup-cluster -i clusterkey --license <license> --hosts-file hosts --password SecureKey
✓ Registered hosts
sdb-deploy will perform the following actions:
  · Install singlestoredb-server 7.3.10 on hosts
    - 172.18.1.4
    - 172.18.1.5
  · Deploy a master aggregator on 172.18.1.4:3306
    - Enable high availability mode
  · Deploy a leaf node on 172.18.1.5:3306
  · Set root password on all nodes

Would you like to continue? [y/N]: y
✓ Downloaded singlestoredb-server 7.3.10
Installing SingleStoreDB on all hosts...
✓ Installed singlestoredb-server7.3.10-6c220bccfc on host 172.18.1.4 (1/2)
✓ Installed singlestoredb-server7.3.10-6c220bccfc on host 172.18.1.5 (2/2)
✓ Successfully installed on 2 hosts
✓ Created master node
✓ Successfully set license
✓ Bootstrapped master aggregator
✓ Enabled high availability mode
✓ Created aggregator nodes
✓ Added aggregators nodes to cluster
✓ Created leaf nodes
✓ Added leaf nodes to cluster

To view your cluster, run 'sdb-admin list-nodes'

Last modified: October 6, 2023

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