Docker Swarm

This section provides information on installing SigNoz on Docker Swarm.

Prerequisites

• A Linux or macOS machine. Microsoft Windows is not officially supported.
• Docker Engine. A minimum of 4GB of memory must be allocated to each Docker node.
• Docker Compose
• Git client

Install SigNoz on Docker Swarm

1. In a directory of your choosing, clone the SigNoz repository and 'cd' into the signoz/deploy directory by entering the following commands:

   git clone -b main https://github.com/SigNoz/signoz.git && cd signoz/deploy/
   

2. (Optional) If you don't have a swarm cluster in place, you can create one by entering the following command:

   docker swarm init
   

   The output should look similar as shown below:

   Swarm initialized: current node (6muco3j7jjuo6k4rbiq8yr8fw) is now a manager.
   
   To add a worker to this swarm, run the following command:
   
   docker swarm join --token SWMTKN-1-6ak6diq1lbrwemx17up9c1ph039h64z0dxksjxv647qnqrd290-4tt6q22dd462p4lf2n6bqbnt4 192.168.65.3:2377
   
   To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.
   

3. (Optional) You can use the docker swarm join command to add more nodes to the swarm. Note that the node you added in the previous step is the manager. For details, see the Docker Swarm Join page of the Docker documentation.

4. Deploy SigNoz by entering the docker stack deploy command and specifying the following:

   • -d to deploy the stack in detached mode
   • --prune to remove services that are no longer referenced by the stack
   • -c and the path to the Swarm Compose file (docker-compose.yaml)
   • The name of the stack (signoz)

   cd deploy/docker
   docker stack deploy -d --prune -c docker-compose.yaml signoz
   

   The output should look similar to the following:

   Creating network signoz-net
   Creating service signoz_query-service
   Creating service signoz_frontend
   Creating service signoz_otel-collector
   Creating service signoz_schema-migrator
   Creating service signoz_init-clickhouse
   Creating service signoz_zookeeper-1
   Creating service signoz_clickhouse
   Creating service signoz_alertmanager
   

Verify the Installation

1. Using the docker stack services command, monitor the SigNoz deployment process. Wait until all SigNoz services and replicas are created:

   docker stack services signoz
   

   You should see the following output:

   ID             NAME                     MODE         REPLICAS   IMAGE                                        PORTS                  
   loqa6qbq7lk3   signoz_clickhouse        replicated   1/1        clickhouse/clickhouse-server:24.1.2-alpine
   zqoee9ij9xh0   signoz_init-clickhouse   replicated   0/1        clickhouse/clickhouse-server:24.1.2-alpine   
   9awvkhh1feov   signoz_otel-collector    replicated   3/3        signoz/signoz-otel-collector:0.111.24        *:4317-4318->4317-4318/tcp
   eu5fbg0v1bps   signoz_signoz            replicated   1/1        signoz/signoz:0.69.0                         *:80->8080/tcp                  
   fcp7uk67tkks   signoz_schema-migrator   replicated   0/1        signoz/signoz-schema-migrator:0.111.24       
   nw6xukg1gkf7   signoz_zookeeper-1       replicated   1/1        bitnami/zookeeper:3.7.1                      
   
   

Scale Up SigNoz Cluster

SigNoz uses the OpenTelemetry Collector to ingest data. By default, the instructions in the Install SigNoz on Docker Swarm document create three replicas, and each replica can handle 50K spans per second. To handle an increased load, perform the following steps:

1. Open the deploy/docker-swarm/docker-compose.yaml file in a plain-text editor.

2. In the services.otel-collector.deploy.replicas field, enter the number of replicas you wish to create. The following example creates four replicas:

3. Update the signoz stack by entering the following command:

docker stack deploy --prune -d -c docker-compose.yaml signoz

Next Steps

• Collect Telemetry from your Docker Clusters
• Instrument Your Application
• Tutorials