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| === Creating service in systemd (RHEL7 and up) ===
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| | === Enable systemd log persistency (remember all reboots, not only last one) === |
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| '''NOTES:''' | | Run ''emacs /etc/systemd/journald.conf'', set |
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| systemctl list-units | grep -o '.*\.mount' | | Storage=persistent |
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| | Do following: |
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| | | mkdir /var/log/journal |
| '''DiagGuiServer example'''
| | systemd-tmpfiles --create --prefix /var/log/journal |
| | | systemctl restart systemd-journald |
| Create file ''/usr/lib/systemd/system/DiagGuiServer.service'' with following contents:
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| [Unit]
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| Description=DiagGuiServer
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| #After=network.target
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| #Requires=autofs.service
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| #Requires=nfs-utils.service nfs-lock.service autofs.service
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| #Requires=autofs.service
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| #After=network.target apps.mount home.mount usr-clas12.mount usr-local.mount
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| #After=-.mount
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| #RequiresMountsFor=/usr/clas12/release/1.4.0/coda/Linux_x86_64/bin | |
| #Wants=remote-fs.target | |
| #After=remote-fs.target
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| #ConditionPathExists=/usr/clas12/release/1.4.0/coda/Linux_x86_64/bin
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| [Service]
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| Type=simple
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| #ExecStartPre=/usr/bin/test ! -f /usr/clas12/release/1.4.0/coda/Linux_x86_64/bin
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| #RestartSec=10
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| User=clasrun
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| Group=onliners
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| #EnvironmentFile=/home/clasrun/systemdenv
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| #Environment="LD_LIBRARY_PATH=/usr/clas12/release/1.4.0/coda/Linux_armv7l/lib:/usr/local/activemq/lib" "SESSION=clasprod" "EXPID=clasrun" "IPC_HOST=clon00" "CLON_PARMS=/usr/clas12/release/1.4.0/parms" "MYSQL_HOST=clondb1"
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| #ExecStart=/usr/clas12/release/1.4.0/coda/src/rol/Linux_x86_64/bin/DiagGuiServer
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| ExecStart=/usr/clas12/release/1.4.0/coda/Linux_x86_64/bin/DiagGuiServer init
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| Restart=on-failure
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| RestartSec=10
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| [Install]
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| WantedBy=multi-user.target
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| #WantedBy=default.target
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| ## ???
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| ##Create symbolic link:
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| ## ln -s /usr/lib/systemd/system/DiagGuiServer.service /etc/systemd/system/DiagGuiServer.service
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| Create directory ''/etc/systemd/system/DiagGuiServer.service.d/''
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| Create file ''/etc/systemd/system/DiagGuiServer.service.d/override.conf'' with following contents:
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| [Service]
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| Environment="LD_LIBRARY_PATH=/apps/gcc/8.3.0/lib:/apps/gcc/8.3.0/lib64:/usr/lib:/usr/local/lib:/usr/local/activemq/lib:/usr/clas12/release/1.4.0/coda/Linux_x86_64/lib:/usr/clas12/release/1.4.0/clon/Linux_x86_64/lib:/usr/clas12/release/1.4.0/clon/lib"
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| Environment="IPC_HOST=clon00"
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| Environment="MYSQL_HOST=clondb1"
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| Environment="EXPID=clasrun"
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| Environment="CLON_PARMS=/usr/clas12/release/1.4.0/parms"
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| Following commands can be used to control service:
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| systemctl start DiagGuiServer
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| systemctl stop DiagGuiServer
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| systemctl status DiagGuiServer | |
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| To start service at boot time, execute command:
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| systemctl enable DiagGuiServer
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| following message should come up on screen:
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| Created symlink from /etc/systemd/system/default.target.wants/DiagGuiServer.service to /usr/lib/systemd/system/DiagGuiServer.service.
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Color change when connected remotely
Problem: after opening vnc session to linux machine from macbook laptop, small window pops up asking about some color settings (create color profile etc), and keeps asking for password; none of passwords actually works, and it keeps asking again and again.
Fix: on linux machine, create file /etc/polkit-1/localauthority/50-local.d/45-allow-colord.pkla with permissions 644 and following contents:
[Allow Colord all Users]
Identity=unix-user:*
Action=org.freedesktop.color-manager.create-device;org.freedesktop.color-manager.create-profile;org.freedesktop.color-manager.delete-device;org.freedesktop.color-manager.delete-profile;org.freedesktop.color-manager.modify-device;org.freedesktop.color-manager.modify-profile
ResultAny=no
ResultInactive=no
ResultActive=yes
Enable systemd log persistency (remember all reboots, not only last one)
Run emacs /etc/systemd/journald.conf, set
Storage=persistent
Do following:
mkdir /var/log/journal
systemd-tmpfiles --create --prefix /var/log/journal
systemctl restart systemd-journald