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> CLIs >

yb-docker-ctl

Attention

This page documents an earlier version. Go to the latest (v2.3) version.
  • Download
  • Online help
  • Syntax
  • Commands
    • create
    • add_node
    • status
    • destroy
    • stop_node
    • start_node
    • stop
    • start
    • remove_node
  • Flags
    • --help, -h
    • --tag
  • Create a cluster
    • Specify a docker image tag
    • Create a 1-node local cluster with replication factor of 1
    • Create a 3-node local cluster with replication factor of 3
    • Create a 5-node local cluster with replication factor of 5
  • Check cluster status
  • Add a node
  • Remove a node
    • Help
    • Example
  • Destroy cluster
  • Upgrade container image

The yb-docker-ctl utility provides a simple command line interface (CLI), or shell, for administering a local Docker-based cluster for development and learning. It manages the YB-Master and YB-TServer containers to perform the necessary administration.

Download

$ mkdir ~/yugabyte && cd ~/yugabyte
$ wget https://raw.githubusercontent.com/yugabyte/yugabyte-db/master/bin/yb-docker-ctl && chmod +x yb-docker-ctl

Online help

Run yb-docker-ctl --help to display the online help.

$ ./yb-docker-ctl -h

Syntax

yb-docker-ctl [ command ] [ arguments ]

Commands

create

Creates a local YugabyteDB cluster.

add_node

Adds a new local YugabyteDB cluster node.

status

Displays the current status of the local YugabyteDB cluster.

destroy

Destroys the local YugabyteDB cluster.

stop_node

Stops the specified local YugabyteDB cluster node.

start_node

Starts the specified local YugabyteDB cluster node.

stop

Stops the local YugabyteDB cluster so that it can be started later.

start

Starts the local YugabyteDB cluster, if it already exists.

remove_node

Stops the specified local YugabyteDB cluster node.

Flags

--help, -h

Displays the online help and then exits.

--tag

Use with create and add_node commands to specify a specific Docker image tag (version). If not included, then latest Docker image is used.

Create a cluster

Use the yb-docker-ctl create command to create a local Docker-based cluster for development and learning.

The number of nodes created when you use the yb-docker-ctl create command is always equal to the replication factor (RF), ensuring that all of the replicas for a given tablet can be placed on different nodes. With the add_node and remove_node commands, the size of the cluster can thereafter be expanded or shrunk as needed.

Specify a docker image tag

By default, the create and add_node commands pull the latest Docker Hub yugabytedb/yugabyte image to create clusters or add nodes.

To pull an earlier Docker image tag (version), add the --tag <tag-id> flag to use an earlier release.

In the following example, a 1-node YugabyteDB cluster is created using the earlier v1.3.2.1 release that has a tag of 1.3.2.1-b2.

$yb-docker-ctl create --tag 1.3.2.1-b2

To get the correct tag value, see the Docker Hub listing of tags for yugabytedb/yugabyte.

Create a 1-node local cluster with replication factor of 1

To create a 1-node local YugabyteDB cluster for development and learning, run the default yb-docker-ctl command. By default, this creates a 1-node cluster with a replication factor (RF) of 1. Note that the yb-docker-ctl create command pulls the latest yugabytedb/yugabyte image at the outset, in case the image has not yet downloaded or is not the latest version.

$ ./yb-docker-ctl create

Create a 3-node local cluster with replication factor of 3

When you create a 3-node local Docker-based cluster using the yb-docker-ctl create command, each of the initial nodes run a yb-tserver process and a yb-master process. Note that the number of YB-Masters in a cluster has to equal to the replication factor (RF) for the cluster to be considered as operating normally and the number of YB-TServers is equal to be the number of nodes.

To create a 3-node local Docker-based cluster for development and learning, run the following yb-docker-ctl command.

$ ./yb-docker-ctl create --rf 3
docker run --name yb-master-n1 --privileged -p 7000:7000 --net yb-net --detach yugabytedb/yugabyte:latest /home/yugabyte/yb-master --fs_data_dirs=/mnt/disk0,/mnt/disk1 --master_addresses=yb-master-n1:7100,yb-master-n2:7100,yb-master-n3:7100 --rpc_bind_addresses=yb-master-n1:7100
Adding node yb-master-n1
docker run --name yb-master-n2 --privileged --net yb-net --detach yugabytedb/yugabyte:latest /home/yugabyte/yb-master --fs_data_dirs=/mnt/disk0,/mnt/disk1 --master_addresses=yb-master-n1:7100,yb-master-n2:7100,yb-master-n3:7100 --rpc_bind_addresses=yb-master-n2:7100
Adding node yb-master-n2
docker run --name yb-master-n3 --privileged --net yb-net --detach yugabytedb/yugabyte:latest /home/yugabyte/yb-master --fs_data_dirs=/mnt/disk0,/mnt/disk1 --master_addresses=yb-master-n1:7100,yb-master-n2:7100,yb-master-n3:7100 --rpc_bind_addresses=yb-master-n3:7100
Adding node yb-master-n3
docker run --name yb-tserver-n1 --privileged -p 9000:9000 -p 9042:9042 -p 6379:6379 --net yb-net --detach yugabytedb/yugabyte:latest /home/yugabyte/yb-tserver --fs_data_dirs=/mnt/disk0,/mnt/disk1 --tserver_master_addrs=yb-master-n1:7100,yb-master-n2:7100,yb-master-n3:7100 --rpc_bind_addresses=yb-tserver-n1:9100
Adding node yb-tserver-n1
docker run --name yb-tserver-n2 --privileged --net yb-net --detach yugabytedb/yugabyte:latest /home/yugabyte/yb-tserver --fs_data_dirs=/mnt/disk0,/mnt/disk1 --tserver_master_addrs=yb-master-n1:7100,yb-master-n2:7100,yb-master-n3:7100 --rpc_bind_addresses=yb-tserver-n2:9100
Adding node yb-tserver-n2
docker run --name yb-tserver-n3 --privileged --net yb-net --detach yugabytedb/yugabyte:latest /home/yugabyte/yb-tserver --fs_data_dirs=/mnt/disk0,/mnt/disk1 --tserver_master_addrs=yb-master-n1:7100,yb-master-n2:7100,yb-master-n3:7100 --rpc_bind_addresses=yb-tserver-n3:9100
Adding node yb-tserver-n3
PID        Type       Node                 URL                       Status          Started At
11818      tserver    yb-tserver-n3        http://172.19.0.7:9000    Running         2017-11-28T23:33:00.369124907Z
11632      tserver    yb-tserver-n2        http://172.19.0.6:9000    Running         2017-11-28T23:32:59.874963849Z
11535      tserver    yb-tserver-n1        http://172.19.0.5:9000    Running         2017-11-28T23:32:59.444064946Z
11350      master     yb-master-n3         http://172.19.0.4:9000    Running         2017-11-28T23:32:58.899308826Z
11231      master     yb-master-n2         http://172.19.0.3:9000    Running         2017-11-28T23:32:58.403788411Z
11133      master     yb-master-n1         http://172.19.0.2:9000    Running         2017-11-28T23:32:57.905097927Z

Create a 5-node local cluster with replication factor of 5

$ ./yb-docker-ctl create --rf 5

Check cluster status

Get the status of your local cluster, including the URLs for the Admin UI for each YB-Master and YB-TServer.

$ ./yb-docker-ctl status
PID        Type       Node                 URL                       Status          Started At
11818      tserver    yb-tserver-n3        http://172.19.0.7:9000    Running         2017-11-28T23:33:00.369124907Z
11632      tserver    yb-tserver-n2        http://172.19.0.6:9000    Running         2017-11-28T23:32:59.874963849Z
11535      tserver    yb-tserver-n1        http://172.19.0.5:9000    Running         2017-11-28T23:32:59.444064946Z
11350      master     yb-master-n3         http://172.19.0.4:9000    Running         2017-11-28T23:32:58.899308826Z
11231      master     yb-master-n2         http://172.19.0.3:9000    Running         2017-11-28T23:32:58.403788411Z
11133      master     yb-master-n1         http://172.19.0.2:9000    Running         2017-11-28T23:32:57.905097927Z

Add a node

Add a new node to the cluster. This will start a new yb-tserver process and give it a new node_id for tracking purposes.

$ ./yb-docker-ctl add_node
docker run --name yb-tserver-n4 --net yb-net --detach yugabytedb/yugabyte:latest /home/yugabyte/yb-tserver --fs_data_dirs=/mnt/disk0,/mnt/disk1 --tserver_master_addrs=04:7100,04:7100,04:7100 --rpc_bind_addresses=yb-tserver-n4:9100
Adding node yb-tserver-n4

Remove a node

Remove a node from the cluster by executing the following command. The command takes the node_id of the node to be removed as input.

Help

$ ./yb-docker-ctl remove_node --help
usage: yb-docker-ctl remove_node [-h] node

positional arguments:
  node_id        Index of the node to remove

optional arguments:
  -h, --help  show this help message and exit

Example

$ ./yb-docker-ctl remove_node 3
Stopping node :yb-tserver-n3

Destroy cluster

The yb-docker-ctl destroy command below destroys the local cluster, including deletion of the data directories.

$ ./yb-docker-ctl destroy

Upgrade container image

The following docker pull command below upgrades the Docker image of YugabyteDB to the latest version.

$ docker pull yugabytedb/yugabyte
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  • Flags
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  • Create a cluster
    • Specify a docker image tag
    • Create a 1-node local cluster with replication factor of 1
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  • Add a node
  • Remove a node
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  • Destroy cluster
  • Upgrade container image
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