Go 1.8.3 and Upgrade-9.3 doc

doc/install/installation.md

@@ -151,11 +151,11 @@ page](https://golang.org/dl).
     # Remove former Go installation folder
     sudo rm -rf /usr/local/go
 
-    curl --remote-name --progress https://storage.googleapis.com/golang/go1.8.1.linux-amd64.tar.gz
-    echo 'a579ab19d5237e263254f1eac5352efcf1d70b9dacadb6d6bb12b0911ede8994  go1.8.1.linux-amd64.tar.gz' | shasum -a256 -c - && \
-      sudo tar -C /usr/local -xzf go1.8.1.linux-amd64.tar.gz
+    curl --remote-name --progress https://storage.googleapis.com/golang/go1.8.3.linux-amd64.tar.gz
+    echo '1862f4c3d3907e59b04a757cfda0ea7aa9ef39274af99a784f5be843c80c6772  go1.8.3.linux-amd64.tar.gz' | shasum -a256 -c - && \
+      sudo tar -C /usr/local -xzf go1.8.3.linux-amd64.tar.gz
     sudo ln -sf /usr/local/go/bin/{go,godoc,gofmt} /usr/local/bin/
-    rm go1.8.1.linux-amd64.tar.gz
+    rm go1.8.3.linux-amd64.tar.gz
 
 ## 4. Node
 

doc/update/9.2-to-9.3.md

@@ -70,7 +70,27 @@ curl --location https://yarnpkg.com/install.sh | bash -
 
 More information can be found on the [yarn website](https://yarnpkg.com/en/docs/install).
 
-### 5. Get latest code
+### 5. Update Go
+
+NOTE: GitLab 9.3 and higher only supports Go 1.8.3 and dropped support for Go 1.5.x through 1.7.x. Be
+sure to upgrade your installation if necessary
+
+You can check which version you are running with `go version`.
+
+Download and install Go:
+
+```bash
+# Remove former Go installation folder
+sudo rm -rf /usr/local/go
+
+curl --remote-name --progress https://storage.googleapis.com/golang/go1.8.3.linux-amd64.tar.gz
+echo '1862f4c3d3907e59b04a757cfda0ea7aa9ef39274af99a784f5be843c80c6772  go1.8.3.linux-amd64.tar.gz' | shasum -a256 -c - && \
+  sudo tar -C /usr/local -xzf go1.8.3.linux-amd64.tar.gz
+sudo ln -sf /usr/local/go/bin/{go,godoc,gofmt} /usr/local/bin/
+rm go1.8.3.linux-amd64.tar.gz
+```
+
+### 6. Get latest code
 
 ```bash
 cd /home/git/gitlab
@@ -97,7 +117,7 @@ cd /home/git/gitlab
 sudo -u git -H git checkout 9-3-stable-ee
 ```
 
-### 6. Update gitlab-shell
+### 5. Update gitlab-shell
 
 ```bash
 cd /home/git/gitlab-shell
@@ -107,7 +127,7 @@ sudo -u git -H git checkout v$(</home/git/gitlab/GITLAB_SHELL_VERSION)
 sudo -u git -H bin/compile
 ```
 
-### 7. Update gitlab-workhorse
+### 6. Update gitlab-workhorse
 
 Install and compile gitlab-workhorse. This requires
 [Go 1.5](https://golang.org/dl) which should already be on your system from
@@ -123,7 +143,7 @@ sudo -u git -H git checkout v$(</home/git/gitlab/GITLAB_WORKHORSE_VERSION)
 sudo -u git -H make
 ```
 
-### 8. Update Gitaly
+### 7. Update Gitaly
 
 If you have not yet set up Gitaly then follow [Gitaly section of the installation
 guide](../install/installation.md#install-gitaly).
@@ -137,7 +157,7 @@ sudo -u git -H git checkout v$(</home/git/gitlab/GITALY_SERVER_VERSION)
 sudo -u git -H make
 ```
 
-### 9. Update configuration files
+### 10. Update configuration files
 
 #### New configuration options for `gitlab.yml`
 
@@ -211,7 +231,7 @@ For Ubuntu 16.04.1 LTS:
 sudo systemctl daemon-reload
 ```
 
-### 10. Install libs, migrations, etc.
+### 11. Install libs, migrations, etc.
 
 ```bash
 cd /home/git/gitlab
@@ -237,14 +257,14 @@ sudo -u git -H bundle exec rake cache:clear RAILS_ENV=production
 
 **MySQL installations**: Run through the `MySQL strings limits` and `Tables and data conversion to utf8mb4` [tasks](../install/database_mysql.md).
 
-### 11. Start application
+### 12. Start application
 
 ```bash
 sudo service gitlab start
 sudo service nginx restart
 ```
 
-### 12. Check application status
+### 13. Check application status
 
 Check if GitLab and its environment are configured correctly: