Jenkins continues integration 2

Node management
Delete the previous node
Default state


The said master In addition to continuous integration and continuous delivery , It also needs to be built , If more and more projects are created on it , If you build on only one machine , Will not be able to load , In general , Will change the construction task from master separate from
Rebuild create vm5

 host 
cd /var/lib/libvirt/images/
rm -f vm5
qemu-img create -f qcow2 -b small-new.qcow2 vm5

server5
yum install -y java-1.8.0-openjdk.x86_64

stay jenkins The new node , Specialized in building




If you don't let master If you don't work , Just change the quantity to 0 That's all right.

problem ： If gitlab I don't know your password

cd /etc/gitlab
gitlab-ctl uninstall
gitlab-ctl cleanse
//rm -f initial_root_password
//gitlab-ctl reconfigure

find / -name *gitlab*

And redeploy gitlab

server4
cd /etc/yum.repos.d/
ls
scp docker.repo server5:/etc/yum.repos.d/
cd /etc/sysctl.d/
ls
scp docker.conf server5:/etc/sysctl.d/
cd /etc/docker/
scp -r certs.d/ daemon.json server5:/etc/docker/

server5
yum install -y docker-ce
sysctl --system
systemctl enable --now docker
vim /etc/hosts
172.25.0.1 server1 reg.westos.org
systemctl restart docker
docker info
docker pull nginx

A new user
Control user rights


The newly created user has no permission .

gitlab After the password is retrieved , New projects

server2
git push -u origin main

Then refresh
problem ： If jenkins There are the following

Because server3 The public key of is not copied

server3
cd .ssh/
cat id_rsa.pub  # Copy the contents to gitlab  SSH in 

The first docker_project_test Disable first
If test The console output of is also wrong
Probably because server5 Not installed on git.

yum install -y git

String a lot of free style projects into an assembly line








Fixed when building the host , You can do the following

server5
cd /tmp/workspace/
cd devops
ls
ssh-keygen
ssh-copy-id server4

If the build host is not fixed ,
ssh-agent Help you cache your credentials directly in this .
Build credentials


Automatic triggering


senior


preservation

jenkins Combined with nail alarm
Installing a plug-in

Create an alarm group

Create a robot in the hands of an intelligent group , keyword jenkins, Copy webhook Address ,





Test upload failed

adopt gitlab Do version control
Create a project

server2
vim Jenkinsfile # Write the previous code into it 
git addJenkinsfile
git commit -m "add Jenkinsfile"
git push -u origin main

Making a change

stay master In the setting of

aggregate ansible
stay jenkins Install on this host ansible

rpm -ivh ansible-2.8.5-1.el7.noarch.rpm
yum install -y ansible-2.8.5-1.el7.noarch.rpm


 If there is a local source, create one ansible Source 
cd /etc/yum.repos.d/
vim ansible.repo
yum install ansible

Access four packages to a directory ,yum install *

ansible -v
cd /etc/ansible/
ls
cat ansible.cfg # Master profile 
cat hosts # object 

gitee

server2
git clone [email protected]:root/ansible.git
cd ansible/
ls

server4,5
systemctl stop docker
systemctl stop docker.socket
netstat -antlp

PUSH ansible Of play-book stay server4,5
server4 As a test environment ,5 As a production environment
jenkins Will pass git Way to pull down from the warehouse , All the information is stored in the warehouse , There is version control for any changes .

server2
vim ansible.cfg

mkdir inventory
cd inventory/
ls
vim test 
[test]
172.25.0.4
vim prod
[prod]
172.25.0.5
cd ..
vim playbook.yml
---
- hosts:all
  tasks:
  - name: install httpd
    yum:
        name: httpd
        state:present
  - name: create index.html # Create a template 
    template:
      src: index.html.j2
      dest: /var/www/html/index.html
  - name: start httpd
    service:
      name:httpd
      state:started
      enabled:yes
vim index.html.j2
{
   { ansible_hostname }}
ls
git add .
git status -s
git commit -m "add playbook.yaml"
git push -u origin main

stay jenkins Pull , New projects

server3
cd /var/lib/jenkins/
cd workspace/
ls

If it is a build host , For example server5, Built on /tmp/, Then in /tmp/ below
stay ansible In the main configuration file of , The remote connection is through ssh
ssh [email protected] This user was created on a remote host , And then through sudo To run the , If you don't do this , Will pass jenkins Users go to visit , But this is wrong

server4,5
useradd devops
visudo

server4
passwd devops
 Set user password 

server5
echo westos | passwd --stdin devops

server3
su - jenkins
cat /etc/passwd
usermod -s /bin/bash jenkins
su - jenkins
ssh-keygen 
ssh-copy-id [email protected]
ssh-copy-id [email protected]
ssh [email protected] # test 
ssh [email protected]
ssh [email protected]
ssh [email protected]
 Then just step back 
ansible- playbook -i inventory/test playbook.yml