Coresrv01 is our main core services server. It is a CentOS 7x server responsible for:
Service | systemd Unit | Config Location |
---|---|---|
DNS | named | /etc/named |
DHCP | dhcpd | /etc/dhcpd |
Web Services | httpd | /etc/httpd /var/www |
MySQL Database | mariadb | /etc/my.cnf This should not need to be touched; /etc/my.cnf.d/... |
sendmail, spamassassin | /etc/mail |
If there is a problem with NFS/autofs, stop the web server and then try restarting autofs.
[root@coresrv01 ~]# systemctl stop httpd [root@coresrv01 ~]# systemctl restart autofs # If restarting autofs hangs try [root@coresrv01 ~]# killall -9 automount [root@coresrv01 ~]# systemctl start autofs # Make sure /home is mounted! [root@coresrv01 ~]# mount /home # if that fails, try: [root@coresrv01 ~]# umount /home; mount zfs3:/home /home # Then restart httpd [root@coresrv01 ~]# systemctl start httpd
After a cold boot start portal_config_gen
[root@coresrv01 ~]# systemctl start portal_config_gen
# Check status/restart systemctl status httpd systemctl restart httpd
There is a nightly backup of all mysql data on mnemosyne.its.virginia.edu
in /u-p_mirror/mysql/
Restore doing similar:
destination-server# ssh -l root -i rootkey mnemosyne.its.virginia.edu "cat /u-p_mirror/mysql/coresrv01_2019-04-16_03:41:39.sql" | mysql -u root -p
coresrv05 is set up and ready to go as a replacement dns/dhcp server. We just need to add the address 128.143.67.11 as an IP on coresrv05
Do the following:
ip addr add 128.143.67.11/16 dev eno1