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authorJason T. Greene <jason@stacksmash.com>2021-09-21 22:32:49 -0500
committerMatthew Heon <matthew.heon@pm.me>2021-09-29 16:39:29 -0400
commit2247d5f1b8b64432607e42f3e03749c1b50b6c5d (patch)
treee3bbbbcb6336089ecb1cf4ad894b93e709fdc484 /pkg
parent7d72e83240890c338dc3d2b17295ba09f9878707 (diff)
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Disable docker and alias to podman in FCOS ignition
Signed-off-by: Jason Greene <jason.greene@redhat.com> Co-authored-by: Dusty Mabe <dusty@dustymabe.com>
Diffstat (limited to 'pkg')
-rw-r--r--pkg/machine/ignition.go88
1 files changed, 84 insertions, 4 deletions
diff --git a/pkg/machine/ignition.go b/pkg/machine/ignition.go
index 89b556b14..e211f5ea6 100644
--- a/pkg/machine/ignition.go
+++ b/pkg/machine/ignition.go
@@ -6,6 +6,7 @@ import (
"encoding/json"
"fmt"
"io/ioutil"
+ "net/url"
)
/*
@@ -80,6 +81,7 @@ func NewIgnitionFile(ign DynamicIgnition) error {
// so a listening host knows it can being interacting with it
ready := `[Unit]
Requires=dev-virtio\\x2dports-%s.device
+After=remove-moby.service
OnFailure=emergency.target
OnFailureJobMode=isolate
[Service]
@@ -89,6 +91,23 @@ ExecStart=/bin/sh -c '/usr/bin/echo Ready >/dev/%s'
[Install]
RequiredBy=multi-user.target
`
+ deMoby := `[Unit]
+Description=Remove moby-engine
+# Run once for the machine
+After=systemd-machine-id-commit.service
+Before=zincati.service
+ConditionPathExists=!/var/lib/%N.stamp
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/bin/rpm-ostree override remove moby-engine
+ExecStart=/usr/bin/rpm-ostree ex apply-live --allow-replacement
+ExecStartPost=/bin/touch /var/lib/%N.stamp
+
+[Install]
+WantedBy=multi-user.target
+ `
_ = ready
ignSystemd := Systemd{
Units: []Unit{
@@ -101,6 +120,21 @@ RequiredBy=multi-user.target
Name: "ready.service",
Contents: strToPtr(fmt.Sprintf(ready, "vport1p1", "vport1p1")),
},
+ {
+ Enabled: boolToPtr(false),
+ Name: "docker.service",
+ Mask: boolToPtr(true),
+ },
+ {
+ Enabled: boolToPtr(false),
+ Name: "docker.socket",
+ Mask: boolToPtr(true),
+ },
+ {
+ Enabled: boolToPtr(true),
+ Name: "remove-moby.service",
+ Contents: &deMoby,
+ },
}}
ignConfig := Config{
Ignition: ignVersion,
@@ -161,6 +195,22 @@ func getFiles(usrName string) []File {
var (
files []File
)
+
+ lingerExample := `[Unit]
+Description=A systemd user unit demo
+After=network-online.target
+Wants=network-online.target podman.socket
+[Service]
+ExecStart=/usr/bin/sleep infinity
+`
+ containers := `[containers]
+netns="bridge"
+rootless_networking="cni"
+`
+ rootContainers := `[engine]
+machine_enabled=true
+`
+
// Add a fake systemd service to get the user socket rolling
files = append(files, File{
Node: Node{
@@ -171,7 +221,7 @@ func getFiles(usrName string) []File {
FileEmbedded1: FileEmbedded1{
Append: nil,
Contents: Resource{
- Source: strToPtr("data:,%5BUnit%5D%0ADescription%3DA%20systemd%20user%20unit%20demo%0AAfter%3Dnetwork-online.target%0AWants%3Dnetwork-online.target%20podman.socket%0A%5BService%5D%0AExecStart%3D%2Fusr%2Fbin%2Fsleep%20infinity%0A"),
+ Source: encodeDataURLPtr(lingerExample),
},
Mode: intToPtr(0744),
},
@@ -188,7 +238,7 @@ func getFiles(usrName string) []File {
FileEmbedded1: FileEmbedded1{
Append: nil,
Contents: Resource{
- Source: strToPtr("data:,%5Bcontainers%5D%0D%0Anetns%3D%22bridge%22%0D%0Arootless_networking%3D%22cni%22"),
+ Source: encodeDataURLPtr(containers),
},
Mode: intToPtr(0744),
},
@@ -213,7 +263,7 @@ func getFiles(usrName string) []File {
FileEmbedded1: FileEmbedded1{
Append: nil,
Contents: Resource{
- Source: strToPtr("data:,%5Bengine%5D%0Amachine_enabled%3Dtrue%0A"),
+ Source: encodeDataURLPtr(rootContainers),
},
Mode: intToPtr(0644),
},
@@ -233,7 +283,22 @@ func getFiles(usrName string) []File {
FileEmbedded1: FileEmbedded1{
Append: nil,
Contents: Resource{
- Source: strToPtr("data:,unqualified-search-registries%3D%5B%22docker.io%22%5D"),
+ Source: encodeDataURLPtr("unqualified-search-registries=[\"docker.io\"]\n"),
+ },
+ Mode: intToPtr(0644),
+ },
+ })
+
+ files = append(files, File{
+ Node: Node{
+ Path: "/etc/tmpfiles.d/podman-docker.conf",
+ },
+ FileEmbedded1: FileEmbedded1{
+ Append: nil,
+ // Create a symlink from the docker socket to the podman socket.
+ // Taken from https://github.com/containers/podman/blob/main/contrib/systemd/system/podman-docker.conf
+ Contents: Resource{
+ Source: encodeDataURLPtr("L+ /run/docker.sock - - - - /run/podman/podman.sock\n"),
},
Mode: intToPtr(0644),
},
@@ -253,5 +318,20 @@ func getLinks(usrName string) []Link {
Hard: boolToPtr(false),
Target: "/home/" + usrName + "/.config/systemd/user/linger-example.service",
},
+ }, {
+ Node: Node{
+ Group: getNodeGrp("root"),
+ Path: "/usr/local/bin/docker",
+ Overwrite: boolToPtr(true),
+ User: getNodeUsr("root"),
+ },
+ LinkEmbedded1: LinkEmbedded1{
+ Hard: boolToPtr(false),
+ Target: "/usr/bin/podman",
+ },
}}
}
+
+func encodeDataURLPtr(contents string) *string {
+ return strToPtr(fmt.Sprintf("data:,%s", url.PathEscape(contents)))
+}