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setup-cluster
MemSQL Helios does not support this command.
Deploy a SingleStoreDB cluster.
Usage
Deploy a SingleStoreDB cluster on multiple machines
sdb-deploy setup-cluster 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. If you would
instead like to set up a local SingleStoreDB "cluster" for testing purposes, see
'sdb-deploy cluster-in-a-box'.
Example usages:
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 on host1; a child aggregator on host2; and leaf nodes on host3
and host4. The hosts host1, host2... 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.
Other examples:
"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 https://docs.singlestore.com/toolbox-redir/setup-cluster-file
Usage of the command with --cluster-file flag:
sdb-deploy setup-cluster --cluster-file path/to/cluster-file.yml
Usage:
sdb-deploy setup-cluster [flags]
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-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
YAML file configuration
As of MemSQL 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
-
Install MemSQL toolbox onto the main deployment machine.
-
Using the template below, create a YAML file with your desired cluster configuration.
license: <license-from-portal.memsql.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
-
Run the following with the path to the YAML file as input.
sdb-deploy setup-cluster --cluster-file <path-to-cluster-file>
Complete cluster file template
license: <LICENSE> [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>*'>
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>
hosts:
- hostname: <host-name> [Required]
localhost: <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>
role: <Unknown | Master | Leaf | Aggregator> (case sensitive) [Required]
availability_group: <availability group>
no_start: <true | false>
variables:
secure_file_priv: <location>
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]
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 MemSQL 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 machine.
Example 1
license: <license-from-portal.memsql.com>
memsql_server_version: 6.8.1
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
:
-
Registers a local host to the cluster.
-
Installs
memsql-server
v6.8.1 on this local host. -
Creates a Master Aggregator node on port
3306
. -
Creates a leaf node on port
3307
.
Example 2
license: <license-from-portal.memsql.com>
memsql_server_version: 6.8.1
package_type: rpm
hosts:
- hostname: <hostname1>
localhost: true
- hostname: <hostname2>
localhost: false
ssh:
host: <cluster-addressable-hostname>
private_key: <path/to/private-key>
Using this cluster file, sdb-deploy setup-cluster
:
-
Registers a local host to the cluster.
-
Registers a remote host to the cluster using the provided
ssh
credentials. -
Installs
memsql-server
v6.8.1 on both hosts.
Example 3
license: <license-from-portal.memsql.com>
memsql_server_version: 6.8.1
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>
localhost: false
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
:
-
Registers a local host to the cluster.
-
Register a remote host to the cluster using the provided
ssh
credentials. -
Installs
memsql-server
v6.8.1 on both the hosts. -
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. -
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. -
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. -
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.memsql.com>
high_availability: true
package_type: rpm
memsql_server_file_path: /home/ec2-user/memsql-server-7.0.16-5aa7127018.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
:
-
Enables high availability.
-
Specifies the use of RPM packages.
-
Specifies the location of the
memsql-server
package which will be used directly instead of downloaded. -
Installs
memsql-server
v7.0.16 on all hosts. -
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. -
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. -
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. -
On Host 4, creates a node on the default port (
3306
), assign it as a leaf node, sets the node’s availability group to1
, and sets the password to the value provided in the cluster file. -
On Host 5, creates a node on the default port (
3306
), assign it as a leaf node, sets the node’s availability group to1
, and sets the password to the value provided in the cluster file. -
On Host 6, creates a node on the default port (
3306
), assign it as a leaf node, sets the node’s availability group to2
, and sets the password to the value provided in the cluster file. -
On Host 7, creates a node on the default port (
3306
), assign it as a leaf node, sets the node’s availability group to2
, and sets the password to the value 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 |
---|---|
license |
The MemSQL license that will be used for the cluster. You can obtain a free or existing license from the MemSQL Customer Portal. Your license will be used to bootstrap a Master Aggregator (MA). |
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. |
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. |
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 MemSQL uses on each host.If the no_numa option is set to true , the NUMA optimization on the cluster will not be performed. |
The following two options are related to the version of MemSQL that will be installed for your cluster. Either option can be specified. If neither option is specified, the latest version of memsql-server is installed.
Option | Description |
---|---|
memsql_server_version |
The desired version of memsql-server will be downloaded and installed cluster-wide. |
memsql_server_file_path |
Installs version of memsql-server package specified by the path to the memsql-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 memsql-server was performed. |
memsqlctl_config_path |
The path to the memsqlctl.hcl file on the target host. Only required if a custom installation of memsql-server was performed. |
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 |
---|---|
user |
The ssh user for the host. |
port |
The ssh port (default: 22 ). |
host |
The ssh hostname. |
private_key |
The identity file for the host (typically found in ~<user>/.ssh |
NODE
Option | Description |
---|---|
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 MemSQL 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. |
availability_group |
The availability group to assign to the node when high_availability is set to true . Refer to Availability Groups for more information. |
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 . |
VARIABLE
Option | Description |
---|---|
secure_file_priv |
Specifies the directory to which any import or export operations should be limited for each node. If value is unspecified, the setup-cluster command sets <defaultInstallDir>/db-files as the default value, where defaultInstallDir is the default installation directory for SingleStore DB nodes. Note that you can only set secure_file_priv for new nodes via the setup-cluster command. If you set secure_file_priv for existing nodes, the setup will fail. For more information, see Setting Non-Sync Variables. |
CONFIG
Option | Description |
---|---|
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. |
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 MemSQL password for the node. |
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 memsql-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. |
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. |
plancachedir |
The absolute path to the plancache directory.If register is set to true , this option must be specified in the configuration file. |
tracelogsdir |
The absolute path to the tracelogs directory.If register is set to true , this option must be specified in the configuration file. |
Remarks
This command is interactive unless you use either the --yes
or --json
flags to override interactive behavior.
Host file structure
For large clusters, you can specify all of your host machine 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]
...
Output
The following example uses the setup-cluster
command to set up a simple cluster on two different host machines 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 memsql-server 6.7.1 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 memsql-server 6.7.1
Installing MemSQL on all hosts...
✓ Installed memsql-server6.7.1-e823135f6e on host 172.18.1.4 (1/2)
✓ Installed memsql-server6.7.1-e823135f6e 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'