Gitlab CE I > OpenShift 자료실

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상세 내역은 아래와 같습니다.


감사합니다.


> 아래


2. CICD
2.1. Prepare
2.1.1. Create VM
* Create disk


cd /var/lib/libvirt/images/lds


qemu-img create -f qcow2 \
    lds-ocp-demo-cicd.qcow2 \
    100G


chown qemu:qemu lds-ocp-demo-cicd.qcow2
[root@lds203 lds]# pwd
/var/lib/libvirt/images/lds
[root@lds203 lds]# qemu-img create -f qcow2 \
>                        lds-ocp-demo-cicd.qcow2 \
>                        100G
Formatting 'lds-ocp-demo-cicd.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=107374182400 lazy_refcounts=off refcount_bits=16
[root@lds203 lds]#
[root@lds203 lds]# chown qemu:qemu lds-ocp-demo-cicd.qcow2
[root@lds203 lds]#
[root@lds203 lds]# ls -al
total 582288968
drwxr-xr-x  2 root root        4096 Dec 27 10:51 .
drwx--x--x. 4 root root        4096 Dec 15 09:49 ..
-rw-r--r--  1 qemu qemu 152822415360 Dec 27 11:01 lds-ocp-demo-bastion-coreos.qcow2
-rw-r--r--  1 root root  6520373248 Dec 16 16:13 lds-ocp-demo-bs1-coreos.qcow2
-rw-r--r--  1 qemu qemu  3323985920 Dec 27 11:01 lds-ocp-demo-cicd.qcow2
-rw-r--r--  1 qemu qemu  23714004992 Dec 27 11:01 lds-ocp-demo-ms1-coreos.qcow2
-rw-r--r--  1 qemu qemu  23320133632 Dec 27 11:01 lds-ocp-demo-ms2-coreos.qcow2
-rw-r--r--  1 qemu qemu  21220360192 Dec 27 11:01 lds-ocp-demo-ms3-coreos.qcow2
-rw-r--r--  1 qemu qemu 249519079424 Dec 27 11:00 lds-ocp-demo-rhel86.qcow2
-rw-r--r--  1 qemu qemu  51399688192 Dec 27 11:01 lds-ocp-demo-wkr1-coreos.qcow2
-rw-r--r--  1 qemu qemu  54186803200 Dec 27 11:01 lds-ocp-demo-wkr2-coreos.qcow2
-rw-r--r--  1 qemu qemu  10226302976 Dec 27 11:01 lds-ocp-demo-wkr3-coreos.qcow2
[root@lds203 lds]#


* File > New Virtual Machine
* VM
  * Name :bastion
  * OS : Red Hat Enterprise Linux 9.0
  * Install : Local CDROM/ISO
  * Memory : 4096 MB
  * CPUs : 2
  * Storage : 100.0 GiB
      * /var/lib/libvirt/images/lds/lds-ocp-demo-cicd.qcow2
  * Network selection
      * Virtual network lds-ocp-private : Isolated network


2.1.2. Install OS
* Account


Seq
User
Password
1
root
2
lds



2.1.3. Network Interface 설정
NetworkManager 도구인 nmtui를 이용하여 network interface를 설정할 수 있다.


nmtui
[root@localhost ~]# nmtui


* 네트워크 장비의 주소와 게이트웨이, DNS 주소 설정 후, 완료 버튼을 선택한다.
  * IPv4 Configuration : Manual
      * Addresses : 192.168.120.50
      * Gateway : 192.168.120.1
      * DNS servers :
        * 192.168.120.100
        * 8.8.8.8
  * Automatically connect : Check


2.1.4. Firewalld and selinux
* firewalld


systemctl disable firewalld
systemctl stop firewalld
systemctl status firewalld




* selinux


setenforce 0
sed -i 's/enforcing/disabled/g' /etc/selinux/config
[root@localhost ~]# setenforce 0
[root@localhost ~]# sed -i 's/enforcing/disabled/g' /etc/selinux/config
[root@localhost ~]# sestatus
SELinux status:                enabled
SELinuxfs mount:                /sys/fs/selinux
SELinux root directory:        /etc/selinux
Loaded policy name:            targeted
Current mode:                  permissive
Mode from config file:          disabled
Policy MLS status:              enabled
Policy deny_unknown status:    allowed
Memory protection checking:    actual (secure)
Max kernel policy version:      33
[root@localhost ~]#


2.1.5. hostname 설정
* 각 노드의 hostname은 FQDN 형태로 정의되어야 한다.


hostnamectl set-hostname cicd.ocpcst.ldsproject.com
hostname


[root@localhost ~]# hostnamectl set-hostname cicd.ocpcst.ldsproject.com
[root@localhost ~]# su -
[root@cicd ~]# hostname
cicd.ocpcst.ldsproject.com
[root@cicd ~]#


2.1.6. Repository
2.1.6.1. Check repo
cat /etc/yum.repos.d/redhat.repo
cat /etc/mtab | grep media
[root@bastion yum.repos.d]# pwd
/etc/yum.repos.d
[root@bastion yum.repos.d]#
[root@bastion yum.repos.d]# head -n 30 redhat.repo
#
# Certificate-Based Repositories
# Managed by (rhsm) subscription-manager
#
# *** This file is auto-generated.  Changes made here will be over-written. ***
# *** Use "subscription-manager repo-override --help" if you wish to make changes. ***
#
# If this file is empty and this system is subscribed consider
# a "yum repolist" to refresh available repos
#


[base]
name=RHEL - AppStream
baseurl=file:///run/media/root/RHEL-9-0-0-BaseOS-x86_64/AppStream
gpgcheck=0
enabled=1


[update]
name=RHEL - BaseOS
baseurl=file:///run/media/root/RHEL-9-0-0-BaseOS-x86_64/BaseOS
gpgcheck=0
enabled=1
…


[root@bastion yum.repos.d]# cat /etc/mtab | grep media
/dev/sr0 /run/media/root/RHEL-9-0-0-BaseOS-x86_64 iso9660 ro,nosuid,nodev,relatime,nojoliet,check=s,map=n,blocksize=2048,uid=0,gid=0,dmode=500,fmode=400 0 0


2.1.6.2. Mount
* ISO Mount
  * https://linuxconfig.org/how-to-mount-cd-dvd-rom-on-centos-rhel-linux
mkdir -p /run/media/root/RHEL-9-0-0-BaseOS-x86_64


mount /dev/sr0 /run/media/root/RHEL-9-0-0-BaseOS-x86_64/




2.1.6.3. Set repo


vi /etc/yum.repos.d/redhat.repo
yum clean all
yum repolist
[root@cicd ~]# cat /etc/yum.repos.d/redhat.repo
…
[base]
name=RHEL - AppStream
baseurl=file:///run/media/root/RHEL-9-0-0-BaseOS-x86_64/AppStream
gpgcheck=0
enabled=1


[update]
name=RHEL - BaseOS
baseurl=file:///run/media/root/RHEL-9-0-0-BaseOS-x86_64/BaseOS
gpgcheck=0
enabled=1
[root@cicd yum.repos.d]# yum clean all
Updating Subscription Management repositories.
Unable to read consumer identity


This system is not registered with an entitlement server. You can use subscription-manager to register.


0 files removed
[root@cicd ~]# yum repolist
Updating Subscription Management repositories.
Unable to read consumer identity


This system is not registered with an entitlement server. You can use subscription-manager to register.


repo id                            repo name
base                                RHEL - AppStream
update                              RHEL - BaseOS
[root@cicd ~]#




2.1.7. Edit VM
* VM
  * Add Hardware
      * Network
        * Virtual network lds-ocp-public : NAT
* Check Network


nmcli device
[root@cicd ~]# nmcli device
DEVICE  TYPE      STATE        CONNECTION
enp1s0  ethernet  connected    enp1s0
enp7s0  ethernet  disconnected  --
lo      loopback  unmanaged    --
[root@cicd ~]#




* Network Setting


nmtui


nmcli device
[root@localhost ~]# nmtui


[root@cicd ~]# nmcli device
DEVICE  TYPE      STATE      CONNECTION
enp7s0  ethernet  connected  enp7s0
enp1s0  ethernet  connected  enp1s0
lo      loopback  unmanaged  --
[root@cicd ~]#


* 네트워크 장비의 주소와 게이트웨이, DNS 주소 설정 후, 완료 버튼을 선택한다.
  * Profile name : enp7s0
  * Device : enp7s0
  * IPv4 Configuration : Automatic
  * Automatically connect : Check
  * Available to all users
2.1.8. DNS
* DNS 정보 확인


cp ocpcst.ldsproject.com.zone ocpcst.ldsproject.com.zone.20221228_1030
cp rev.ocpcst.ldsproject.com.zone rev.ocpcst.ldsproject.com.zone.20221228_1030


nslookup cicd.ocpcst.ldsproject.com
[root@bastion named]# pwd
/var/named
[root@bastion named]# ls -al
total 32
drwxrwx--T.  5 root  named 4096 Dec 25 00:00 .
drwxr-xr-x. 22 root  root  4096 Dec 15 16:10 ..
drwxrwx---.  2 named named  75 Dec 25 00:00 data
drwxrwx---.  2 named named  60 Dec 28 09:58 dynamic
-rw-r-----.  1 root  named 2253 Sep 30 05:09 named.ca
-rw-r-----.  1 root  named  152 Sep 30 05:09 named.empty
-rw-r-----.  1 root  named  152 Sep 30 05:09 named.localhost
-rw-r-----.  1 root  named  168 Sep 30 05:09 named.loopback
-rw-r--r--  1 named named  900 Dec 19 09:58 ocpcst.ldsproject.com.zone
-rw-r--r--  1 named named 1111 Dec 15 16:10 rev.ocpcst.ldsproject.com.zone
drwxrwx---.  2 named named    6 Sep 30 05:09 slaves
[root@bastion named]#
[root@bastion named]# cp ocpcst.ldsproject.com.zone ocpcst.ldsproject.com.zone.20221228_1030
[root@bastion named]# cp rev.ocpcst.ldsproject.com.zone rev.ocpcst.ldsproject.com.zone.20221228_1030
[root@bastion named]#
[root@bastion named]# nslookup cicd.ocpcst.ldsproject.com
Server:        192.168.120.100
Address:        192.168.120.100#53


** server can't find cicd.ocpcst.ldsproject.com: NXDOMAIN


[root@bastion named]#


* Edit zone file


vi ocpcst.ldsproject.com.zone
cicd.ocpcst.ldsproject.com.      IN      A      192.168.120.51


* Edit reverse zone file


vi rev.ocpcst.ldsproject.com.zone
51.120.168.192.in-addr.arpa.    IN      PTR    cicd.ocpcst.ldsproject.com.


* Restart bind service


sudo systemctl restart named




* Check lookup


nslookup cicd.ocpcst.ldsproject.com
[root@bastion named]# nslookup cicd.ocpcst.ldsproject.com
Server:        192.168.120.100
Address:        192.168.120.100#53


Name:  cicd.ocpcst.ldsproject.com
Address: 192.168.120.51


[root@bastion named]#