chore: upgrade golang to 1.18

CONTRIBUTING.md

@@ -59,15 +59,7 @@ To add a dependency via Yarn, for example, run `yarn add <dependency>` from with
 
 ## Installing Go
 
-Chronograf requires Go 1.16 or higher.
-
-## Installing & Using Dep
-
-You'll need to install Dep to manage the backend (Go) dependencies.
-
-* [Install Dep](https://github.com/golang/dep)
-
-To add a dependency via Dep, for example, run `dep ensure -add <dependency>` from within the `/chronograf` directory. _Note that as of this writing, `dep ensure` will modify many extraneous vendor files, so you'll need to run `dep prune` to clean this up before committing your changes. Apparently, the next version of `dep` will take care of this step for you._
+Chronograf requires Go 1.18 or higher.
 
 ## Revision Control Systems
 

README.md

@@ -181,11 +181,11 @@ docker pull chronograf:latest
 
 ### From Source
 
-* Chronograf works with go 1.16+, node 12 LTS, and yarn 1.7+.
+* Chronograf works with go 1.18+, node 12 LTS, and yarn 1.7+.
 * Chronograf requires [Kapacitor](https://github.com/influxdata/kapacitor)
   1.5.x+ to create and store alerts.
 
-1. [Install Go 1.16](https://golang.org/doc/install)
+1. [Install Go 1.18](https://golang.org/doc/install)
 1. [Install Node (version 16 LTS)](https://nodejs.org/en/about/releases/)
 1. [Install yarn](https://yarnpkg.com/docs/install)
 1. [Setup your GOPATH](https://golang.org/doc/code.html#GOPATH)

etc/Dockerfile_build

@@ -33,7 +33,7 @@ RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \
 
 # Install go
 ENV GOPATH /root/go
-ENV GO_VERSION 1.16.4
+ENV GO_VERSION 1.18
 ENV GO_ARCH amd64
 ENV GO111MODULES ON
 RUN wget https://golang.org/dl/go${GO_VERSION}.linux-${GO_ARCH}.tar.gz; \

go.mod

@@ -1,6 +1,6 @@
 module github.com/influxdata/chronograf
 
-go 1.17
+go 1.18
 
 require (
 	cloud.google.com/go/bigtable v1.10.0 // indirect