Kubernetes 部署 gitlab

1.下載相應文件

# mkdir gitlab && cd gitlab
# vim url.txt             
https://raw.githubusercontent.com/zhijiansd/ansible-k8s/master/addons/gitlab/gitlab-ns.yaml
https://raw.githubusercontent.com/zhijiansd/ansible-k8s/master/addons/gitlab/redis-svc.yaml
https://raw.githubusercontent.com/zhijiansd/ansible-k8s/master/addons/gitlab/redis-rc.yaml
https://raw.githubusercontent.com/zhijiansd/ansible-k8s/master/addons/gitlab/postgresql-svc.yaml
https://raw.githubusercontent.com/zhijiansd/ansible-k8s/master/addons/gitlab/postgresql-rc.yaml
https://raw.githubusercontent.com/zhijiansd/ansible-k8s/master/addons/gitlab/gitlab.rb
https://raw.githubusercontent.com/zhijiansd/ansible-k8s/master/addons/gitlab/gitlab-svc.yaml
https://raw.githubusercontent.com/zhijiansd/ansible-k8s/master/addons/gitlab/gitlab-rc.yaml
# vim download.sh
#!/bin/bash
if command -v wget >/dev/null 2>&1
then
  echo 'Exists wget' 
else
  echo "Wget command not installed"
  yum -y install wget
fi

file=/root/gitlab/url.txt

Num=`awk 'END{print NR}' $file` 
echo Total: $Num URLs

  cat $file | while read line
do
  wget -c -i $file
done

2.部署 Namepace

# kubectl create -f gitlab-ns.yaml

3.部署 Redis

# kubectl create -f redis-svc.yaml 
# kubectl create -f redis-rc.yaml

4.部署 PostgreSQL

# kubectl create -f postgresql-svc.yaml 
# kubectl create -f postgresql-rc.yaml

5.部署 GitLab

A.創建 ConfigMap

# vim gitlab.rb
gitlab_rails['gitlab_email_enabled'] = true    
gitlab_rails['gitlab_email_from'] = "[email protected]"    
gitlab_rails['smtp_enable'] = true    
gitlab_rails['smtp_address'] = "smtp.qq.com"    
gitlab_rails['smtp_port'] = 465    
gitlab_rails['smtp_user_name'] = "[email protected]"    
gitlab_rails['smtp_password'] = "**********"    
gitlab_rails['smtp_domain'] = "zhi.io"    
gitlab_rails['smtp_authentication'] = "login"    
gitlab_rails['smtp_enable_starttls_auto'] = true    
gitlab_rails['smtp_openssl_verify_mode'] = "peer"    
gitlab_rails['smtp_tls'] = true    

prometheus['monitor_kubernetes'] = true    
prometheus['listen_address'] = '0.0.0.0:9090'    
node_exporter['enable'] = true    
redis_exporter['enable'] = true    
postgres_exporter['enable'] = true    
gitlab_monitor['enable'] = true

注:如上gitlab.rb配置上半部分實現發送郵件功能，下半部分配置了prometheus採集相關信息。

gitlab_rails['smtp_password']配置的是郵箱授權碼，不是郵箱密碼，開啓SMTP後，163郵箱會讓你自己配置授權碼，而QQ郵箱是自動生成的授權碼，謹記。

# kubectl -n gitlab create configmap gitlab-rb --from-file=gitlab.rb
# kubectl -n gitlab describe configmap gitlab-rb
Name:         gitlab-rb
Namespace:    gitlab
Labels:       <none>
Annotations:  <none>

Data
====
gitlab.rb:
----
gitlab_rails['gitlab_email_enabled'] = true
gitlab_rails['gitlab_email_from'] = "[email protected]"
gitlab_rails['smtp_enable'] = true
gitlab_rails['smtp_address'] = "smtp.qq.com"
gitlab_rails['smtp_port'] = 465
gitlab_rails['smtp_user_name'] = "[email protected]"
gitlab_rails['smtp_password'] = "**********"
gitlab_rails['smtp_domain'] = "zhi.io"
gitlab_rails['smtp_authentication'] = "login"
gitlab_rails['smtp_enable_starttls_auto'] = true
gitlab_rails['smtp_openssl_verify_mode'] = "peer"
gitlab_rails['smtp_tls'] = true

prometheus['monitor_kubernetes'] = true
prometheus['listen_address'] = '0.0.0.0:9090'
node_exporter['enable'] = true
redis_exporter['enable'] = true
postgres_exporter['enable'] = true
gitlab_monitor['enable'] = true

Events:  <none>

B.部署 Gitlab

# kubectl create -f gitlab-svc.yaml
# kubectl create -f gitlab-rc.yaml

關於gitlab-rc.yaml配置的幾點註釋:

GITLAB_SECRETS_OTP_KEY_BASE 用於加密數據庫中的2FA祕密。如果您丟失或輪換此密碼，則您的所有用戶都無法使用2FA登錄。
GITLAB_SECRETS_DB_KEY_BASE 用於加密數據庫中的CI密鑰變量以及導入憑證。如果丟失或輪換此祕密，您將無法使用現有的CI祕密。
GITLAB_SECRETS_SECRET_KEY_BASE 用於密碼重置鏈接和其他“標準”身份驗證功能。如果丟失或輪換此密碼，電子郵件中的密碼重置令牌將重置。

注:可以使用pwgen -Bsv1 64命令生成隨機字符串並將其指定爲如上值。

GITLAB_ROOT_PASSWORD配置GitLab的root密碼。
GITLAB_ROOT_EMAIL配置GitLab的root用戶的Email。
重要:由於加上探針，pod無法啓動，這裏我去掉了探針，很鬱悶。

C.查看 Pod 和 Services

# kubectl -n gitlab get pod
NAME               READY     STATUS    RESTARTS   AGE
gitlab-jmwbr       1/1       Running   0          1h
postgresql-k9p4s   1/1       Running   0          1h
redis-rxlqc        1/1       Running   0          1h
# kubectl -n gitlab get services
NAME         TYPE           CLUSTER-IP       EXTERNAL-IP   PORT(S)                                    AGE
gitlab       LoadBalancer   10.244.85.204    <pending>     80:41008/TCP,22:30270/TCP,9090:34210/TCP   1h
postgresql   ClusterIP      10.244.130.245   <none>        5432/TCP                                   1h
redis        ClusterIP      10.244.158.130   <none>        6379/TCP                                   1h

注:gitlab下載鏡像和初始化較久，畢竟鏡像就1個多G，所以請耐心等待幾分鐘，之後使用NodeIP:41008即可進入GitLab的web界面，使用nodeIP：34210即可進入Prometheus界面。

6.這裏我配置了traefik，且使用了Google Chrome的自動翻譯功能，實際gitlab並沒有中文版