add systemd services for configuration after start

this adds 4 small systemd services that:
- creates crc specific configurations for dnsmasq
- sets a new uuid as cluster id
- creates the pod for routes-controller
- tries to grow the disk and filesystem

Author: anjannath

createdisk.sh

@@ -130,6 +130,26 @@ if [ "${ARCH}" == "aarch64" ] && [ ${BUNDLE_TYPE} != "okd" ]; then
    ${SSH} core@${VM_IP} -- "sudo rpm-ostree install https://kojipkgs.fedoraproject.org//packages/qemu/8.2.6/3.fc40/aarch64/qemu-user-static-x86-8.2.6-3.fc40.aarch64.rpm"
 fi
 
+# Install crc related systemd services
+${SSH} core@${VM_IP} -- 'mkdir -p /home/core/systemd-units && mkdir -p /home/core/systemd-scripts'
+${SCP} systemd/crc-*.service core@${VM_IP}:/home/core/systemd-units/
+${SCP} systemd/crc-*.sh core@${VM_IP}:/home/core/systemd-scripts/
+${SSH} core@${VM_IP} -- 'sudo cp /home/core/systemd-units/* /etc/systemd/system/ && sudo cp /home/core/systemd-scripts/* /usr/local/bin/'
+${SSH} core@${VM_IP} -- 'ls /home/core/systemd-scripts/ | xargs sudo chmod +x /usr/local/bin/'
+${SSH} core@${VM_IP} -- 'sudo restorecon -rv /usr/local/bin'
+${SSH} core@${VM_IP} -- 'ls /home/core/systemd-units/ | xargs sudo systemctl enable'
+${SSH} core@${VM_IP} -- 'rm -rf /home/core/systemd-units/* /home/core/systemd-scripts/*'
+
+if [ ${BUNDLE_TYPE} != "microshift" ]; then
+    ${SCP} systemd/ocp-*.service core@${VM_IP}:/home/core/systemd-units/
+    ${SCP} systemd/ocp-*.sh core@${VM_IP}:/home/core/systemd-scripts/
+    ${SSH} core@${VM_IP} -- 'sudo cp /home/core/systemd-units/* /etc/systemd/system/ && sudo cp /home/core/systemd-scripts/* /usr/local/bin'
+    ${SSH} core@${VM_IP} -- 'ls /home/core/systemd-scripts/ | xargs sudo chmod +x /usr/local/bin/'
+    ${SSH} core@${VM_IP} -- 'sudo restorecon -rv /usr/local/bin'
+    ${SSH} core@${VM_IP} -- 'ls /home/core/systemd-units/ | xargs sudo systemctl enable'
+    ${SSH} core@${VM_IP} -- 'rm -rf /home/core/systemd-units/* /home/core/systemd-scripts/*'
+fi
+
 cleanup_vm_image ${VM_NAME} ${VM_IP}
 
 # Delete all the pods and lease from the etcd db so that when this bundle is use for the cluster provision, everything comes up in clean state.

systemd/crc-dnsmasq.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=CRC Unit for configuring dnsmasq
+Requires=ovs-configuration.service
+After=ovs-configuration.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/local/bin/crc-dnsmasq.sh
+StandardOutput=journal
+
+[Install]
+WantedBy=multi-user.target

systemd/crc-dnsmasq.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set -x
+
+# exit early if user-mode networking
+ping -c1 gateway > /dev/null 2>&1
+[ $? -eq 0 ] && exit 0
+
+hostName=$(hostname)
+ip=$(ip -4 addr show br-ex | grep -oP '(?<=inet\s)192+(\.\d+){3}')
+iip=$(hostname -i)
+
+cat << EOF > /etc/dnsmasq.d/crc-dnsmasq.conf
+listen-address=$ip
+expand-hosts
+log-queries
+local=/crc.testing/
+domain=crc.testing
+address=/apps-crc.testing/$ip
+address=/api.crc.testing/$ip
+address=/api-int.crc.testing/$ip
+address=/$hostName.crc.testing/$iip
+EOF
+
+sleep 2
+
+systemctl enable dnsmasq.service
+systemctl start dnsmasq.service

systemd/crc-routes-controller.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=CRC Unit starting routes controller
+After=kubelet.service
+Requires=kubelet.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/local/bin/crc-routes-controller.sh
+StandardOutput=journal
+
+[Install]
+WantedBy=multi-user.target

systemd/crc-routes-controller.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -x
+
+# exit early if system-mode networking
+ping -c1 gateway > /dev/null 2>&1
+[ $? -eq 2 ] && exit 0
+
+export KUBECONFIG=/opt/kubeconfig
+oc apply -f /opt/crc/routes-controller.yaml
+
+

systemd/ocp-clusterid.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=CRC Unit setting random cluster ID
+After=kubelet.service
+Requires=kubelet.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/local/bin/ocp-clusterid.sh
+StandardOutput=journal
+
+[Install]
+WantedBy=multi-user.target

systemd/ocp-clusterid.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -x
+
+export KUBECONFIG="/opt/kubeconfig"
+uuid=$(uuidgen)
+
+retry=0
+max_retry=20
+until `oc get clusterversion > /dev/null 2>&1`
+do
+    [ $retry == $max_retry ] && exit 1
+    sleep 5
+    ((retry++))
+done
+
+oc patch clusterversion version -p "{\"spec\":{\"clusterID\":\"${uuid}\"}}" --type merge

systemd/ocp-growfs.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=CRC Unit to grow the root filesystem
+
+[Service]
+Type=oneshot
+ExecStart=/usr/local/bin/ocp-growfs.sh
+StandardOutput=journal
+
+[Install]
+WantedBy=multi-user.target

systemd/ocp-growfs.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+set -x
+
+root_partition=$(/usr/sbin/blkid -t TYPE=xfs -o device)
+/usr/bin/growpart "${root_partition#?}" "${root_partition#/dev/???}"
+
+rootFS="/sysroot"
+mount -o remount,rw "${rootFS}"
+xfs_growfs "${rootFS}"
+#mount -o remount,ro "${rootFS}"