diff --git a/Makefile b/Makefile index 2133eee8046..e0ca70d33cf 100644 --- a/Makefile +++ b/Makefile @@ -98,6 +98,8 @@ ifneq "$(INCUS_OFFLINE)" "" endif $(GO) get -t -v -d -u ./... $(GO) mod tidy + cd cmd/lxd-to-incus && $(GO) get -t -v -d -u ./... + cd cmd/lxd-to-incus && $(GO) mod tidy @echo "Dependencies updated" .PHONY: update-protobuf diff --git a/cmd/lxd-to-incus/go.mod b/cmd/lxd-to-incus/go.mod new file mode 100644 index 00000000000..6a26be9f5dd --- /dev/null +++ b/cmd/lxd-to-incus/go.mod @@ -0,0 +1,52 @@ +module github.com/lxc/incus/cmd/lxd-to-incus + +go 1.21.0 + +require ( + github.com/canonical/lxd v0.0.0-20230906180525-bbd424b78d32 + github.com/lxc/incus v0.0.0-20230906011158-7c67b413e03b + github.com/spf13/cobra v1.7.0 +) + +require ( + github.com/flosch/pongo2 v0.0.0-20200913210552-0d938eb266f3 // indirect + github.com/fvbommel/sortorder v1.1.0 // indirect + github.com/go-macaroon-bakery/macaroon-bakery/v3 v3.0.1 // indirect + github.com/go-macaroon-bakery/macaroonpb v1.0.0 // indirect + github.com/golang/protobuf v1.5.3 // indirect + github.com/google/uuid v1.3.1 // indirect + github.com/gorilla/schema v1.2.0 // indirect + github.com/gorilla/securecookie v1.1.1 // indirect + github.com/gorilla/websocket v1.5.0 // indirect + github.com/gosexy/gettext v0.0.0-20160830220431-74466a0a0c4a // indirect + github.com/inconshreveable/mousetrap v1.1.0 // indirect + github.com/juju/webbrowser v1.0.0 // indirect + github.com/julienschmidt/httprouter v1.3.0 // indirect + github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect + github.com/kr/fs v0.1.0 // indirect + github.com/mattn/go-runewidth v0.0.15 // indirect + github.com/muhlemmer/gu v0.3.1 // indirect + github.com/olekukonko/tablewriter v0.0.5 // indirect + github.com/pborman/uuid v1.2.1 // indirect + github.com/pkg/sftp v1.13.6 // indirect + github.com/pkg/xattr v0.4.9 // indirect + github.com/rivo/uniseg v0.4.4 // indirect + github.com/robfig/cron/v3 v3.0.1 // indirect + github.com/rogpeppe/fastuuid v1.2.0 // indirect + github.com/sirupsen/logrus v1.9.3 // indirect + github.com/spf13/pflag v1.0.5 // indirect + github.com/zitadel/oidc/v2 v2.8.3 // indirect + golang.org/x/crypto v0.12.0 // indirect + golang.org/x/net v0.14.0 // indirect + golang.org/x/oauth2 v0.11.0 // indirect + golang.org/x/sys v0.11.0 // indirect + golang.org/x/term v0.11.0 // indirect + golang.org/x/text v0.12.0 // indirect + google.golang.org/appengine v1.6.7 // indirect + google.golang.org/protobuf v1.31.0 // indirect + gopkg.in/errgo.v1 v1.0.1 // indirect + gopkg.in/httprequest.v1 v1.2.1 // indirect + gopkg.in/macaroon.v2 v2.1.0 // indirect + gopkg.in/square/go-jose.v2 v2.6.0 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect +) diff --git a/cmd/lxd-to-incus/go.sum b/cmd/lxd-to-incus/go.sum new file mode 100644 index 00000000000..f5942129f76 --- /dev/null +++ b/cmd/lxd-to-incus/go.sum @@ -0,0 +1,251 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/canonical/lxd v0.0.0-20230906180525-bbd424b78d32 h1:4iacTWh7M/ZKQ0MZWUvpLncYZlI6u5IvPPd7BQ+OZuw= +github.com/canonical/lxd v0.0.0-20230906180525-bbd424b78d32/go.mod h1:OfCg6z25zfVH3vTq5G2Uq0/YCEmNQkNo0C0hoPWMWMQ= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= +github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= +github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c= +github.com/flosch/pongo2 v0.0.0-20200913210552-0d938eb266f3 h1:fmFk0Wt3bBxxwZnu48jqMdaOR/IZ4vdtJFuaFV8MpIE= +github.com/flosch/pongo2 v0.0.0-20200913210552-0d938eb266f3/go.mod h1:bJWSKrZyQvfTnb2OudyUjurSG4/edverV7n82+K3JiM= +github.com/frankban/quicktest v1.0.0/go.mod h1:R98jIehRai+d1/3Hv2//jOVCTJhW1VBavT6B6CuGq2k= +github.com/frankban/quicktest v1.2.2/go.mod h1:Qh/WofXFeiAFII1aEBu529AtJo6Zg2VHscnEsbBnJ20= +github.com/frankban/quicktest v1.7.2/go.mod h1:jaStnuzAqU1AJdCO0l53JDCJrVDKcS03DbaAcR7Ks/o= +github.com/frankban/quicktest v1.10.0/go.mod h1:ui7WezCLWMWxVWr1GETZY3smRy0G4KWq9vcPtJmFl7Y= +github.com/frankban/quicktest v1.11.3 h1:8sXhOn0uLys67V8EsXLc6eszDs8VXWxL3iRvebPhedY= +github.com/frankban/quicktest v1.11.3/go.mod h1:wRf/ReqHper53s+kmmSZizM8NamnL3IM0I9ntUbOk+k= +github.com/fvbommel/sortorder v1.1.0 h1:fUmoe+HLsBTctBDoaBwpQo5N+nrCp8g/BjKb/6ZQmYw= +github.com/fvbommel/sortorder v1.1.0/go.mod h1:uk88iVf1ovNn1iLfgUVU2F9o5eO30ui720w+kxuqRs0= +github.com/go-macaroon-bakery/macaroon-bakery/v3 v3.0.1 h1:uvQJoKTHrFFu8zxoaopNKedRzwdy3+8H72we4T/5cGs= +github.com/go-macaroon-bakery/macaroon-bakery/v3 v3.0.1/go.mod h1:H59IYeChwvD1po3dhGUPvq5na+4NVD7SJlbhGKvslr0= +github.com/go-macaroon-bakery/macaroonpb v1.0.0 h1:It9exBaRMZ9iix1iJ6gwzfwsDE6ExNuwtAJ9e09v6XE= +github.com/go-macaroon-bakery/macaroonpb v1.0.0/go.mod h1:UzrGOcbiwTXISFP2XDLDPjfhMINZa+fX/7A2lMd31zc= +github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= +github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= +github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8= +github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA= +github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs= +github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w= +github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0= +github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8= +github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= +github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk= +github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg= +github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY= +github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= +github.com/google/go-cmp v0.2.1-0.20190312032427-6f77996f0c42/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38= +github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= +github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= +github.com/google/uuid v1.3.1 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h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/cmd/lxd-to-incus/lxd-to-incus b/cmd/lxd-to-incus/lxd-to-incus new file mode 100755 index 00000000000..d730b4b3405 Binary files /dev/null and b/cmd/lxd-to-incus/lxd-to-incus differ diff --git a/cmd/lxd-to-incus/main.go b/cmd/lxd-to-incus/main.go new file mode 100644 index 00000000000..75b26245619 --- /dev/null +++ b/cmd/lxd-to-incus/main.go @@ -0,0 +1,472 @@ +package main + +import ( + "fmt" + "io/ioutil" + "os" + "path/filepath" + "strings" + + lxdAPI "github.com/canonical/lxd/shared/api" + "github.com/spf13/cobra" + + "github.com/lxc/incus/shared" + incusAPI "github.com/lxc/incus/shared/api" + "github.com/lxc/incus/shared/cmd" + "github.com/lxc/incus/shared/version" +) + +var minLXDVersion = &version.DottedVersion{4, 0, 0} +var maxLXDVersion = &version.DottedVersion{5, 16, 0} + +type cmdGlobal struct { + flagHelp bool + flagVersion bool +} + +func main() { + // Setup command line parser. + daemonCmd := cmdMigrate{} + + app := daemonCmd.Command() + app.Use = "lxd-to-incus" + app.Short = "LXD to Incus migration tool" + app.Long = `Description: + LXD to Incus migration tool + + This tool allows an existing LXD user to move all their data over to Incus. +` + app.SilenceUsage = true + app.CompletionOptions = cobra.CompletionOptions{DisableDefaultCmd: true} + + // Global flags. + globalCmd := cmdGlobal{} + app.PersistentFlags().BoolVar(&globalCmd.flagVersion, "version", false, "Print version number") + app.PersistentFlags().BoolVarP(&globalCmd.flagHelp, "help", "h", false, "Print help") + + // Version handling. + app.SetVersionTemplate("{{.Version}}\n") + app.Version = version.Version + + // Run the main command and handle errors. + err := app.Execute() + if err != nil { + os.Exit(1) + } +} + +type cmdMigrate struct{ + flagYes bool +} + +func (c *cmdMigrate) Command() *cobra.Command { + cmd := &cobra.Command{} + cmd.Use = "lxd-to-incus" + cmd.RunE = c.Run + cmd.PersistentFlags().BoolVar(&c.flagYes, "yes", false, "Migrate without prompting") + + return cmd +} + +func (c *cmdMigrate) Run(app *cobra.Command, args []string) error { + // Confirm that we're root. + if os.Geteuid() != 0 { + return fmt.Errorf("This tool must be run as root") + } + + // Iterate through potential sources. + fmt.Println("=> Looking for source server") + var source Source + for _, candidate := range sources { + if !candidate.Present() { + continue + } + + source = candidate + break + } + + if source == nil { + return fmt.Errorf("No source server could be found") + } + + // Iterate through potential targets. + fmt.Println("=> Looking for target server") + var target Target + for _, candidate := range targets { + if !candidate.Present() { + continue + } + + target = candidate + break + } + + if target == nil { + return fmt.Errorf("No target server could be found") + } + + // Connect to the servers. + fmt.Println("=> Connecting to source server") + srcClient, err := source.Connect() + if err != nil { + return fmt.Errorf("Failed to connect to the source: %w", err) + } + + fmt.Println("=> Connecting to the target server") + targetClient, err := target.Connect() + if err != nil { + return fmt.Errorf("Failed to connect to the target: %w", err) + } + + // Get versions. + fmt.Println("=> Checking server versions") + srcServerInfo, _, err := srcClient.GetServer() + if err != nil { + return fmt.Errorf("Failed getting source server info: %w", err) + } + + targetServerInfo, _, err := targetClient.GetServer() + if err != nil { + return fmt.Errorf("Failed getting target server info: %w", err) + } + + fmt.Printf("==> Source version: %s\n", srcServerInfo.Environment.ServerVersion) + fmt.Printf("==> Target version: %s\n", targetServerInfo.Environment.ServerVersion) + + // Compare versions. + fmt.Println("=> Validating version compatibility") + srcVersion, err := version.Parse(srcServerInfo.Environment.ServerVersion) + if err != nil { + return fmt.Errorf("Couldn't parse source server version: %w", err) + } + + targetVersion, err := version.Parse(targetServerInfo.Environment.ServerVersion) + if err != nil { + return fmt.Errorf("Couldn't parse target server version: %w", err) + } + + if srcVersion.Compare(minLXDVersion) < 0 { + return fmt.Errorf("LXD version is lower than minimal version %q", minLXDVersion) + } + + if srcVersion.Compare(maxLXDVersion) > 0 { + return fmt.Errorf("LXD version is newer than maximum version %q", maxLXDVersion) + } + + if srcVersion.Compare(targetVersion) > 0 { + return fmt.Errorf("Incus version is older than source LXD version") + } + + // Validate source non-empty. + srcCheckEmpty := func() (bool, error) { + // Check if more than one project. + names, err := srcClient.GetProjectNames() + if err != nil { + return false, err + } + + if len(names) > 1 { + return false, nil + } + + // Check if more than one profile. + names, err = srcClient.GetProfileNames() + if err != nil { + return false, err + } + + if len(names) > 1 { + return false, nil + } + + // Check if any instance is persent. + names, err = srcClient.GetInstanceNames(lxdAPI.InstanceTypeAny) + if err != nil { + return false, err + } + + if len(names) > 0 { + return false, nil + } + + // Check if any storage pool is present. + names, err = srcClient.GetStoragePoolNames() + if err != nil { + return false, err + } + + if len(names) > 0 { + return false, nil + } + + // Check if any network is present. + networks, err := srcClient.GetNetworks() + if err != nil { + return false, err + } + + for _, network := range networks { + if network.Managed { + return false, nil + } + } + + return true, nil + } + + fmt.Println("=> Checking that the source server isn't empty") + isEmpty, err := srcCheckEmpty() + if err != nil { + return fmt.Errorf("Failed to check source server: %w", err) + } + + if isEmpty { + return fmt.Errorf("Source server is empty, migration not needed") + } + + // Validate target empty. + targetCheckEmpty := func() (bool, error) { + // Check if more than one project. + names, err := targetClient.GetProjectNames() + if err != nil { + return false, err + } + + if len(names) > 1 { + return false, nil + } + + // Check if more than one profile. + names, err = targetClient.GetProfileNames() + if err != nil { + return false, err + } + + if len(names) > 1 { + return false, nil + } + + // Check if any instance is present. + names, err = targetClient.GetInstanceNames(incusAPI.InstanceTypeAny) + if err != nil { + return false, err + } + + if len(names) > 0 { + return false, nil + } + + // Check if any storage pool is present. + names, err = targetClient.GetStoragePoolNames() + if err != nil { + return false, err + } + + if len(names) > 0 { + return false, nil + } + + // Check if any network is present. + networks, err := targetClient.GetNetworks() + if err != nil { + return false, err + } + + for _, network := range networks { + if network.Managed { + return false, nil + } + } + + return true, nil + } + + fmt.Println("=> Checking that the target server is empty") + isEmpty, err = targetCheckEmpty() + if err != nil { + return fmt.Errorf("Failed to check target server: %w", err) + } + + if !isEmpty { + return fmt.Errorf("Target server isn't empty, can't proceed with migration.") + } + + // Validate configuration. + fmt.Println("=> Validating source server configuration") + deprecatedConfigs := []string{ + "candid.api.key", + "candid.api.url", + "candid.domains", + "candid.expiry", + "core.trust_password", + "maas.api.key", + "maas.api.url", + "rbac.agent.url", + "rbac.agent.username", + "rbac.agent.private_key", + "rbac.agent.public_key", + "rbac.api.expiry", + "rbac.api.key", + "rbac.api.url", + "rbac.expiry", + } + + for _, key := range deprecatedConfigs { + _, ok := srcServerInfo.Config[key] + if ok { + return fmt.Errorf("Source server is using deprecated key %q, please unset and retry.", key) + } + } + + // Confirm migration. + if !c.flagYes { + fmt.Println(` +The migration is now ready to proceed. +At this point, the source server and all its instances will be stopped. +Instances will come back online once the migration is complete. +`) + + ok, err := cmd.AskBool("Proceed with the migration? [default=no]: ", "no") + if err != nil { + return err + } + + if !ok { + os.Exit(1) + } + } + + // Stop source. + fmt.Println("=> Stopping the source server") + err = source.Stop() + if err != nil { + fmt.Errorf("Failed to stop the source server: %w", err) + } + + // Stop target. + fmt.Println("=> Stopping the target server") + err = target.Stop() + if err != nil { + fmt.Errorf("Failed to stop the target server: %w", err) + } + + // Wipe the target. + fmt.Println("=> Wiping the target server") + targetPaths, err := target.Paths() + if err != nil { + return fmt.Errorf("Failed to get target paths: %w", err) + } + + err = os.RemoveAll(targetPaths.Logs) + if err != nil && !os.IsNotExist(err) { + return fmt.Errorf("Failed to remove %q: %w", targetPaths.Logs, err) + } + + err = os.RemoveAll(targetPaths.Cache) + if err != nil && !os.IsNotExist(err) { + return fmt.Errorf("Failed to remove %q: %w", targetPaths.Cache, err) + } + + err = os.RemoveAll(targetPaths.Daemon) + if err != nil && !os.IsNotExist(err) { + return fmt.Errorf("Failed to remove %q: %w", targetPaths.Daemon, err) + } + + // Migrate data. + fmt.Println("=> Migrating the data") + sourcePaths, err := source.Paths() + if err != nil { + return fmt.Errorf("Failed to get source paths: %w", err) + } + + _, err = shared.RunCommand("mv", sourcePaths.Logs, targetPaths.Logs) + if err != nil { + return fmt.Errorf("Failed to move %q to %q: %w", sourcePaths.Logs, targetPaths.Logs, err) + } + + _, err = shared.RunCommand("mv", sourcePaths.Cache, targetPaths.Cache) + if err != nil { + return fmt.Errorf("Failed to move %q to %q: %w", sourcePaths.Cache, targetPaths.Cache, err) + } + + _, err = shared.RunCommand("mv", sourcePaths.Daemon, targetPaths.Daemon) + if err != nil { + return fmt.Errorf("Failed to move %q to %q: %w", sourcePaths.Daemon, targetPaths.Daemon, err) + } + + // Cleanup paths. + fmt.Println("=> Cleaning up target paths") + + for _, dir := range []string{"devices", "devlxd", "security", "shmounts"} { + err = os.RemoveAll(filepath.Join(targetPaths.Daemon, dir)) + if err != nil && !os.IsNotExist(err) { + return fmt.Errorf("Failed to delete %q: %w", dir, err) + } + } + + for _, dir := range []string{"containers", "containers-snapshots", "snapshots", "virtual-machines", "virtual-machines-snapshots"} { + entries, err := ioutil.ReadDir(filepath.Join(targetPaths.Daemon, dir)) + if err != nil { + if os.IsNotExist(err) { + continue + } + + return fmt.Errorf("Failed to read entries in %q: %w", filepath.Join(targetPaths.Daemon, dir), err) + } + + for _, entry := range entries { + srcPath := filepath.Join(targetPaths.Daemon, dir, entry.Name()) + oldTarget, err := os.Readlink(srcPath) + if err != nil { + return fmt.Errorf("Failed to resolve symlink %q: %w", srcPath, err) + } + + newTarget := strings.Replace(oldTarget, sourcePaths.Daemon, targetPaths.Daemon, 1) + err = os.Remove(srcPath) + if err != nil { + return fmt.Errorf("Failed to delete symlink %q: %w", srcPath, err) + } + + err = os.Symlink(newTarget, srcPath) + if err != nil { + return fmt.Errorf("Failed to create symlink %q: %w", srcPath, err) + } + } + } + + // Start target. + fmt.Println("=> Starting the target server") + err = target.Start() + if err != nil { + return fmt.Errorf("Failed to start the target server: %w", err) + } + + // Validate target. + fmt.Println("=> Checking the target server") + _, _, err = targetClient.GetServer() + if err != nil { + return fmt.Errorf("Failed to get target server info: %w", err) + } + + // Confirm uninstall. + if !c.flagYes { + ok, err := cmd.AskBool("Uninstall the LXD package? [default=no]: ", "no") + if err != nil { + return err + } + + if !ok { + os.Exit(1) + } + } + + // Purge source. + fmt.Println("=> Uninstalling the source server") + err = source.Purge() + if err != nil { + return fmt.Errorf("Failed to uninstall the source server: %w", err) + } + + return nil +} diff --git a/cmd/lxd-to-incus/paths.go b/cmd/lxd-to-incus/paths.go new file mode 100644 index 00000000000..71987fa2983 --- /dev/null +++ b/cmd/lxd-to-incus/paths.go @@ -0,0 +1,7 @@ +package main + +type DaemonPaths struct { + Daemon string + Logs string + Cache string +} diff --git a/cmd/lxd-to-incus/sources.go b/cmd/lxd-to-incus/sources.go new file mode 100644 index 00000000000..2b30cf3c446 --- /dev/null +++ b/cmd/lxd-to-incus/sources.go @@ -0,0 +1,60 @@ +package main + +import ( + "github.com/canonical/lxd/client" + + "github.com/lxc/incus/shared" +) + +type Source interface { + Present() bool + Stop() error + Start() error + Purge() error + Connect() (lxd.InstanceServer, error) + Paths() (*DaemonPaths, error) +} + +var sources = []Source{&srcSnap{}} + +type srcSnap struct{} + +func (s *srcSnap) Present() bool { + // Validate that the snap is installed. + if !shared.PathExists("/snap/lxd") { + return false + } + + if !shared.PathExists("/var/snap/lxd") { + return false + } + + return true +} + +func (s *srcSnap) Stop() error { + _, err := shared.RunCommand("snap", "stop", "lxd") + return err +} + +func (s *srcSnap) Start() error { + _, err := shared.RunCommand("snap", "start", "lxd") + return err +} + +func (s *srcSnap) Purge() error { + _, err := shared.RunCommand("snap", "remove", "lxd", "--purge") + return err +} + +func (s *srcSnap) Connect() (lxd.InstanceServer, error) { + return lxd.ConnectLXDUnix("/var/snap/lxd/common/lxd/unix.socket", nil) +} + +func (s *srcSnap) Paths() (*DaemonPaths, error) { + return &DaemonPaths{ + Daemon: "/var/snap/lxd/common/lxd/", + Logs: "/var/snap/lxd/common/lxd/logs/", + Cache: "/var/snap/lxd/common/lxd/cache/", + }, nil +} diff --git a/cmd/lxd-to-incus/targets.go b/cmd/lxd-to-incus/targets.go new file mode 100644 index 00000000000..cd53046e991 --- /dev/null +++ b/cmd/lxd-to-incus/targets.go @@ -0,0 +1,61 @@ +package main + +import ( + "time" + + "github.com/lxc/incus/client" + "github.com/lxc/incus/shared" +) + +type Target interface { + Present() bool + Stop() error + Start() error + Connect() (incus.InstanceServer, error) + Paths() (*DaemonPaths, error) +} + +var targets = []Target{&targetSystemd{}} + +type targetSystemd struct{} + +func (s *targetSystemd) Present() bool { + if !shared.PathExists("/var/lib/incus/") { + return false + } + + if !shared.PathExists("/etc/systemd/system/incus.service") { + return false + } + + return true +} + +func (s *targetSystemd) Stop() error { + _, err := shared.RunCommand("systemctl", "stop", "incus") + return err +} + +func (s *targetSystemd) Start() error { + _, err := shared.RunCommand("systemctl", "start", "incus") + if err != nil { + return err + } + + // Wait for the socket to become available. + time.Sleep(5 * time.Second) + + return nil +} + +func (s *targetSystemd) Connect() (incus.InstanceServer, error) { + return incus.ConnectIncusUnix("/var/lib/incus/unix.socket", nil) +} + +func (s *targetSystemd) Paths() (*DaemonPaths, error) { + return &DaemonPaths{ + Daemon: "/var/lib/incus/", + Logs: "/var/log/incus/", + Cache: "/var/cache/incus/", + }, nil +}