Install InfluxDB Enterprise data nodes
InfluxDB Enterprise offers highly scalable clusters on your infrastructure and a management UI for working with clusters. The next steps will get you up and running with the second essential component of your InfluxDB Enterprise cluster: the data nodes.
If you have not set up your meta nodes, please visit Installing meta nodes. Bad things can happen if you complete the following steps without meta nodes.
Data node setup description and requirements
The installation process sets up two data nodes and each data node runs on its own server. You must have a minimum of two data nodes in a cluster. InfluxDB Enterprise clusters require at least two data nodes for high availability and redundancy.
There is no requirement for each data node to run on its own server. However, best practices are to deploy each data node on a dedicated server.
See the Clustering guide for more on cluster architecture.
License key or file
InfluxDB Enterprise requires a license key or a license file to run.
Your license key is available at InfluxPortal.
Contact support at the email we provided at signup to receive a license file.
License files are required only if the nodes in your cluster cannot reach
portal.influxdata.com on port
Data nodes communicate over ports
For licensing purposes, data nodes must also be able to reach
If the data nodes cannot reach
portal.influxdata.com on port
you’ll need to set the
license-path setting instead of the
setting in the data node configuration file.
InfluxDB Enterprise does not function as a load balancer.
You will need to configure your own load balancer to send client traffic to the
data nodes on port
8086 (the default port for the HTTP API).
The installation package creates an
influxdb user that is used to run the InfluxDB data service.
influxdb user also owns certain files that are needed for the service to start successfully.
In some cases, local policies may prevent the local user account from being created and the service fails to start.
Contact your systems administrator for assistance with this requirement.
Data node setup
Step 1: Add appropriate DNS entries for each of your servers
Ensure that your servers’ hostnames and IP addresses are added to your network’s DNS environment. The addition of DNS entries and IP assignment is usually site and policy specific; contact your DNS administrator for assistance as necessary. Ultimately, use entries similar to the following:
Before proceeding with the installation, verify on each meta and data server that the other
servers are resolvable. Here is an example set of shell commands using
ping -qc 1 enterprise-meta-01 ping -qc 1 enterprise-meta-02 ping -qc 1 enterprise-meta-03 ping -qc 1 enterprise-data-01 ping -qc 1 enterprise-data-02
We highly recommend that each server be able to resolve the IP from the hostname alone as shown here. Resolve any connectivity issues before proceeding with the installation. A healthy cluster requires that every meta node and data node in a cluster be able to communicate.
Step 2: Set up, configure, and start the data node services
Perform the following steps on each data node:
- a. Download and install the data service
- b. Edit the data node configuration files
- c. Start the data service
a. Download and install the data service
Ubuntu and Debian (64-bit)
wget https://dl.influxdata.com/enterprise/releases/influxdb-data_1.10.0-c1.10.0_amd64.deb sudo dpkg -i influxdb-data_1.10.0-c1.10.0_amd64.deb
RedHat and CentOS (64-bit)
wget https://dl.influxdata.com/enterprise/releases/influxdb-data-1.10.0_c1.10.0.x86_64.rpm sudo yum localinstall influxdb-data-1.10.0_c1.10.0.x86_64.rpm
Verify the authenticity of release download (recommended)
For added security, follow these steps to verify the signature of your InfluxDB download with
Download and import InfluxData’s public key:
curl -s https://repos.influxdata.com/influxdata-archive_compat.key | gpg --import
Download the signature file for the release by adding
.ascto the download URL. For example:
Verify the signature with
gpg --verify influxdb-data-1.10.0-c1.10.0.x86_64.rpm.asc influxdb-data-1.10.0_c1.10.0.x86_64.rpm
The output from this command should include the following:
gpg: Good signature from "InfluxDB Packaging Service <email@example.com>" [unknown]
b. Edit the data node configuration files
hostnameat the top of the file and set it to the full hostname of the data node.
[meta]section and set it to
[meta]section and set it to a long pass phrase. The internal shared secret is used in JWT authentication for intra-node communication. This value must be same for all of your data nodes and match the
[meta] internal-shared-secretvalue in the configuration files of your meta nodes.
license-key in the
[enterprise] section to the license key you received on InfluxPortal OR
license-path in the
[enterprise] section to the local path to the JSON license file you received from InfluxData.
license-path settings are mutually exclusive and one must remain set to the empty string.
# Change this option to true to disable reporting. # reporting-disabled = false # bind-address = ":8088" hostname="<enterprise-data-0x>" [enterprise] # license-key and license-path are mutually exclusive, use only one and leave the other blank license-key = "<your_license_key>" # Mutually exclusive with license-path # The path to a valid license file. license-key and license-path are mutually exclusive, # use only one and leave the other blank. license-path = "/path/to/readable/JSON.license.file" # Mutually exclusive with license-key [meta] # Where the cluster metadata is stored dir = "/var/lib/influxdb/meta" # data nodes do require a local meta directory ... # This setting must have the same value as the meta nodes' meta.auth-enabled configuration. meta-auth-enabled = true [...] [http] # Determines whether HTTP endpoint is enabled. # enabled = true # The bind address used by the HTTP service. # bind-address = ":8086" [...] # The JWT auth shared secret to validate requests using JSON web tokens. shared-secret = "long pass phrase used for signing tokens"
c. Start the data service
On sysvinit systems, enter:
service influxdb start
On systemd systems, enter:
sudo systemctl start influxdb
Check to see that the process is running by entering:
ps aux | grep -v grep | grep influxdb
You should see output similar to:
influxdb 2706 0.2 7.0 571008 35376 ? Sl 15:37 0:16 /usr/bin/influxd -config /etc/influxdb/influxdb.conf
If you do not see the expected output, the process is either not launching or is exiting prematurely. Check the logs for error messages and verify the previous setup steps are complete.
If you see the expected output, repeat for the remaining data nodes. Once all data nodes have been installed, configured, and launched, move on to the next section to join the data nodes to the cluster.
Step 3: Join the data nodes to the cluster
You should join your data nodes to the cluster only when you are adding a brand new node,
either during the initial creation of your cluster or when growing the number of data nodes.
If you are replacing an existing data node with
influxd-ctl update-data, skip the rest of this guide.
On one and only one of the meta nodes that you set up in the previous document, run:
influxd-ctl add-data enterprise-data-01:8088 influxd-ctl add-data enterprise-data-02:8088
The expected output is:
Added data node y at enterprise-data-0x:8088
add-data command once and only once for each data node you are joining
to the cluster.
To verify the nodes, issue the following command on any meta node:
The output should be similar to:
Data Nodes ========== ID TCP Address Version 4 enterprise-data-01:8088 1.10.0-c1.10.0 5 enterprise-data-02:8088 1.10.0-c1.10.0 Meta Nodes ========== TCP Address Version enterprise-meta-01:8091 1.10.0-c1.10.0 enterprise-meta-02:8091 1.10.0-c1.10.0 enterprise-meta-03:8091 1.10.0-c1.10.0
The output should include every data node that was added to the cluster.
The first data node added should have
N is equal to one plus the number of meta nodes.
In a standard three meta node cluster, the first data node should have
Subsequently added data nodes should have monotonically increasing IDs.
If not, there may be artifacts of a previous cluster in the metastore.
If you do not see your data nodes in the output, please retry adding them to the cluster.
Once your data nodes are part of your cluster, do the following:
- Set up authentication. Once you cluster is configured for authentication, if you want to add more users in addition to admin user, see Manage users and permissions.
- Enable TLS.
- Set up Chronograf for UI visualization, dashboards, and management.
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