diskimage-builder/elements/dhcp-all-interfaces/install.d/dhcp-interface@.service

[Unit]
Description=DHCP interface %I
Before=network-pre.target
Wants=network-pre.target

ConditionPathExists=!/etc/sysconfig/network-scripts/ifcfg-%I

[Service]
Type=oneshot
User=root
ExecStartPre=/usr/local/sbin/dhcp-all-interfaces.sh %I
ExecStart=/sbin/ifup %I
RemainAfterExit=true

[Install]
WantedBy=multi-user.target
DHCP: make udev rules want dhcp-interface@.service Updates the dhcp-all-interfaces element to fix a race with the recent udev rules implementation on Fedora. With the new approach we make the udev rule want (require to startup) a generic dhcp-interface@.service template which can be started individually for each interface that is discovered. The dhcp-interface@.service is setup such that it: 1) It calls dhcp-all-interfaces <iface> directly with a pre-exec script. This creates the ifcfg file right before we need it but avoids the case where network.service might get greedy and try to start it itself. 2) Only runs if the ifcfg script doesn't already exist. This is important because we only need to bootstrap the DHCP configs... Once they exist the network.service will take care of starting them on reboots, upgrades, etc. 3) On initial boot ensure that the initial DHCP interfaces come up after network.service. Since we really only want dhcp-all-interfaces to help bootstrap that haven't already been configured this seems reasonable. 4) We also try to ensure that cloud-init comes up after the DHCP interfaces. Cloud init has a decently long timeout that this wasn't a functional problem but it keeps log file spew down. Change-Id: I71b026f027182aad49c3435bb903e5e38e524685 Closes-bug: #1294803 2014-03-19 18:33:14 +00:00			`[Unit]`
			`Description=DHCP interface %I`
Add dhcp-all-interfaces.target for syncing units Currently there is no way for a service to become aware that dhcp-all-interfaces is finished configuring all the interfaces at boot time. This causes problems for applications like the ironic-python-agent which scans the interfaces when it first starts as part of the inspection stage and can race against dhcp-all-interfaces bringing up the interfaces, leading to inconsistent results. This patch ensures that the dhcp-all-interfaces script runs before any network interface is configured and brought up by the rest of the system, and also ensures that the ironic-agent element also waits for the network to be online before starting. This is done by using the network targets provided by systemd. Change-Id: Id9583b7f54361aa603a6229da598ad6a0f0f7938 2016-05-09 12:37:49 +00:00			`Before=network-pre.target`
			`Wants=network-pre.target`
DHCP: make udev rules want dhcp-interface@.service Updates the dhcp-all-interfaces element to fix a race with the recent udev rules implementation on Fedora. With the new approach we make the udev rule want (require to startup) a generic dhcp-interface@.service template which can be started individually for each interface that is discovered. The dhcp-interface@.service is setup such that it: 1) It calls dhcp-all-interfaces <iface> directly with a pre-exec script. This creates the ifcfg file right before we need it but avoids the case where network.service might get greedy and try to start it itself. 2) Only runs if the ifcfg script doesn't already exist. This is important because we only need to bootstrap the DHCP configs... Once they exist the network.service will take care of starting them on reboots, upgrades, etc. 3) On initial boot ensure that the initial DHCP interfaces come up after network.service. Since we really only want dhcp-all-interfaces to help bootstrap that haven't already been configured this seems reasonable. 4) We also try to ensure that cloud-init comes up after the DHCP interfaces. Cloud init has a decently long timeout that this wasn't a functional problem but it keeps log file spew down. Change-Id: I71b026f027182aad49c3435bb903e5e38e524685 Closes-bug: #1294803 2014-03-19 18:33:14 +00:00
			`ConditionPathExists=!/etc/sysconfig/network-scripts/ifcfg-%I`

			`[Service]`
			`Type=oneshot`
			`User=root`
			`ExecStartPre=/usr/local/sbin/dhcp-all-interfaces.sh %I`
			`ExecStart=/sbin/ifup %I`
			`RemainAfterExit=true`

			`[Install]`
			`WantedBy=multi-user.target`