redhat7.4安装gitlab

Job for postfix.service failed because the control process exited with error code. See "systemctl status postfix.service" and "journalctl -xe" for details.

 systemctl status postfix.service

● postfix.service - Postfix Mail Transport Agent
   Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since 五 2019-07-26 09:41:05 CST; 22s ago
  Process: 35784 ExecStart=/usr/sbin/postfix start (code=exited, status=1/FAILURE)
  Process: 35782 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited, status=0/SUCCESS)
  Process: 35775 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited, status=75)

7月 26 09:41:03 172.16.1.187 aliasesdb[35775]: /usr/sbin/postconf: warning: valid_hostname: numeric hostname: 172.16.1.187
7月 26 09:41:03 172.16.1.187 aliasesdb[35775]: /usr/sbin/postconf: fatal: unable to use my own hostname
7月 26 09:41:04 172.16.1.187 aliasesdb[35775]: newaliases: warning: valid_hostname: numeric hostname: 172.16.1.187
7月 26 09:41:04 172.16.1.187 aliasesdb[35775]: newaliases: fatal: unable to use my own hostname
7月 26 09:41:04 172.16.1.187 postfix[35784]: warning: valid_hostname: numeric hostname: 172.16.1.187
7月 26 09:41:04 172.16.1.187 postfix[35784]: fatal: unable to use my own hostname
7月 26 09:41:05 172.16.1.187 systemd[1]: postfix.service: control process exited, code=exited status=1
7月 26 09:41:05 172.16.1.187 systemd[1]: Failed to start Postfix Mail Transport Agent.
7月 26 09:41:05 172.16.1.187 systemd[1]: Unit postfix.service entered failed state.
7月 26 09:41:05 172.16.1.187 systemd[1]: postfix.service failed.

vim /etc/postfix/main.cf

myhostname = mail.mydomain.com

sudo systemctl start postfix

sudo EXTERNAL_URL="https://gitlab.example.com" yum install -y gitlab-ce

sudo vim /etc/gitlab/gitlab.rb

unicorn[‘port‘]=9000
external_url ‘http://172.1.16.144:9000‘

gitlab-ctl reconfigure
gitlab-ctl restart