Merge pull request #967 from Xe/report-status-systemd

ipn/ipnserver: enable systemd-notify support
bradfitz/acl_tags_in_tailscale_status
Christine Dodrill 4 years ago committed by GitHub
commit 0681c6da49
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23

@ -14,6 +14,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
L github.com/jsimonetti/rtnetlink/internal/unix from github.com/jsimonetti/rtnetlink L github.com/jsimonetti/rtnetlink/internal/unix from github.com/jsimonetti/rtnetlink
L 💣 github.com/mdlayher/netlink from github.com/jsimonetti/rtnetlink+ L 💣 github.com/mdlayher/netlink from github.com/jsimonetti/rtnetlink+
L 💣 github.com/mdlayher/netlink/nlenc from github.com/jsimonetti/rtnetlink+ L 💣 github.com/mdlayher/netlink/nlenc from github.com/jsimonetti/rtnetlink+
L github.com/mdlayher/sdnotify from tailscale.com/util/systemd
github.com/peterbourgon/ff/v2 from github.com/peterbourgon/ff/v2/ffcli github.com/peterbourgon/ff/v2 from github.com/peterbourgon/ff/v2/ffcli
github.com/peterbourgon/ff/v2/ffcli from tailscale.com/cmd/tailscale/cli github.com/peterbourgon/ff/v2/ffcli from tailscale.com/cmd/tailscale/cli
💣 github.com/tailscale/wireguard-go/conn from github.com/tailscale/wireguard-go/device+ 💣 github.com/tailscale/wireguard-go/conn from github.com/tailscale/wireguard-go/device+
@ -72,6 +73,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
tailscale.com/types/structs from tailscale.com/control/controlclient+ tailscale.com/types/structs from tailscale.com/control/controlclient+
W tailscale.com/util/endian from tailscale.com/net/netns W tailscale.com/util/endian from tailscale.com/net/netns
tailscale.com/util/lineread from tailscale.com/control/controlclient+ tailscale.com/util/lineread from tailscale.com/control/controlclient+
tailscale.com/util/systemd from tailscale.com/control/controlclient+
tailscale.com/version from tailscale.com/cmd/tailscale/cli+ tailscale.com/version from tailscale.com/cmd/tailscale/cli+
tailscale.com/version/distro from tailscale.com/cmd/tailscale/cli+ tailscale.com/version/distro from tailscale.com/cmd/tailscale/cli+
tailscale.com/wgengine from tailscale.com/ipn tailscale.com/wgengine from tailscale.com/ipn

@ -19,6 +19,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
github.com/klauspost/compress/zstd/internal/xxhash from github.com/klauspost/compress/zstd github.com/klauspost/compress/zstd/internal/xxhash from github.com/klauspost/compress/zstd
L 💣 github.com/mdlayher/netlink from github.com/jsimonetti/rtnetlink+ L 💣 github.com/mdlayher/netlink from github.com/jsimonetti/rtnetlink+
L 💣 github.com/mdlayher/netlink/nlenc from github.com/jsimonetti/rtnetlink+ L 💣 github.com/mdlayher/netlink/nlenc from github.com/jsimonetti/rtnetlink+
L github.com/mdlayher/sdnotify from tailscale.com/util/systemd
💣 github.com/tailscale/wireguard-go/conn from github.com/tailscale/wireguard-go/device+ 💣 github.com/tailscale/wireguard-go/conn from github.com/tailscale/wireguard-go/device+
💣 github.com/tailscale/wireguard-go/device from tailscale.com/wgengine+ 💣 github.com/tailscale/wireguard-go/device from tailscale.com/wgengine+
github.com/tailscale/wireguard-go/device/tokenbucket from github.com/tailscale/wireguard-go/device github.com/tailscale/wireguard-go/device/tokenbucket from github.com/tailscale/wireguard-go/device
@ -82,6 +83,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
tailscale.com/util/lineread from tailscale.com/control/controlclient+ tailscale.com/util/lineread from tailscale.com/control/controlclient+
tailscale.com/util/pidowner from tailscale.com/ipn/ipnserver tailscale.com/util/pidowner from tailscale.com/ipn/ipnserver
tailscale.com/util/racebuild from tailscale.com/logpolicy tailscale.com/util/racebuild from tailscale.com/logpolicy
tailscale.com/util/systemd from tailscale.com/control/controlclient+
tailscale.com/version from tailscale.com/cmd/tailscaled+ tailscale.com/version from tailscale.com/cmd/tailscaled+
tailscale.com/version/distro from tailscale.com/control/controlclient+ tailscale.com/version/distro from tailscale.com/control/controlclient+
tailscale.com/wgengine from tailscale.com/cmd/tailscaled+ tailscale.com/wgengine from tailscale.com/cmd/tailscaled+

@ -18,6 +18,7 @@ StateDirectory=tailscale
StateDirectoryMode=0750 StateDirectoryMode=0750
CacheDirectory=tailscale CacheDirectory=tailscale
CacheDirectoryMode=0750 CacheDirectoryMode=0750
Type=notify
[Install] [Install]
WantedBy=multi-user.target WantedBy=multi-user.target

@ -44,6 +44,7 @@ import (
"tailscale.com/types/logger" "tailscale.com/types/logger"
"tailscale.com/types/opt" "tailscale.com/types/opt"
"tailscale.com/types/structs" "tailscale.com/types/structs"
"tailscale.com/util/systemd"
"tailscale.com/version" "tailscale.com/version"
"tailscale.com/wgengine/filter" "tailscale.com/wgengine/filter"
) )
@ -309,6 +310,7 @@ func (c *Direct) doLoginOrRegen(ctx context.Context, t *oauth2.Token, flags Logi
if mustregen { if mustregen {
_, url, err = c.doLogin(ctx, t, flags, true, url) _, url, err = c.doLogin(ctx, t, flags, true, url)
} }
return url, err return url, err
} }
@ -329,6 +331,7 @@ func (c *Direct) doLogin(ctx context.Context, t *oauth2.Token, flags LoginFlags,
if expired { if expired {
c.logf("Old key expired -> regen=true") c.logf("Old key expired -> regen=true")
systemd.Status("key expired; run 'tailscale up' to authenticate")
regen = true regen = true
} }
if (flags & LoginInteractive) != 0 { if (flags & LoginInteractive) != 0 {

@ -13,12 +13,13 @@ require (
github.com/go-ole/go-ole v1.2.4 github.com/go-ole/go-ole v1.2.4
github.com/godbus/dbus/v5 v5.0.3 github.com/godbus/dbus/v5 v5.0.3
github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e
github.com/google/go-cmp v0.4.0 github.com/google/go-cmp v0.5.0
github.com/goreleaser/nfpm v1.1.10 github.com/goreleaser/nfpm v1.1.10
github.com/jsimonetti/rtnetlink v0.0.0-20200117123717-f846d4f6c1f4 github.com/jsimonetti/rtnetlink v0.0.0-20200117123717-f846d4f6c1f4
github.com/klauspost/compress v1.10.10 github.com/klauspost/compress v1.10.10
github.com/kr/pty v1.1.1 github.com/kr/pty v1.1.1
github.com/mdlayher/netlink v1.1.0 github.com/mdlayher/netlink v1.1.0
github.com/mdlayher/sdnotify v0.0.0-20200625151349-e4a4f32afc4a
github.com/miekg/dns v1.1.30 github.com/miekg/dns v1.1.30
github.com/pborman/getopt v0.0.0-20190409184431-ee0cd42419d3 github.com/pborman/getopt v0.0.0-20190409184431-ee0cd42419d3
github.com/peterbourgon/ff/v2 v2.0.0 github.com/peterbourgon/ff/v2 v2.0.0

@ -41,6 +41,8 @@ github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5a
github.com/google/go-cmp v0.3.1/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 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4= github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.0 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w=
github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI= github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
github.com/google/rpmpack v0.0.0-20191226140753-aa36bfddb3a0 h1:BW6OvS3kpT5UEPbCZ+KyX/OB4Ks9/MNMhWjqPPkZxsE= github.com/google/rpmpack v0.0.0-20191226140753-aa36bfddb3a0 h1:BW6OvS3kpT5UEPbCZ+KyX/OB4Ks9/MNMhWjqPPkZxsE=
github.com/google/rpmpack v0.0.0-20191226140753-aa36bfddb3a0/go.mod h1:RaTPr0KUf2K7fnZYLNDrr8rxAamWs3iNywJLtQ2AzBg= github.com/google/rpmpack v0.0.0-20191226140753-aa36bfddb3a0/go.mod h1:RaTPr0KUf2K7fnZYLNDrr8rxAamWs3iNywJLtQ2AzBg=
@ -68,6 +70,8 @@ github.com/mdlayher/netlink v0.0.0-20190409211403-11939a169225/go.mod h1:eQB3mZE
github.com/mdlayher/netlink v1.0.0/go.mod h1:KxeJAFOFLG6AjpyDkQ/iIhxygIUKD+vcwqcnu43w/+M= github.com/mdlayher/netlink v1.0.0/go.mod h1:KxeJAFOFLG6AjpyDkQ/iIhxygIUKD+vcwqcnu43w/+M=
github.com/mdlayher/netlink v1.1.0 h1:mpdLgm+brq10nI9zM1BpX1kpDbh3NLl3RSnVq6ZSkfg= github.com/mdlayher/netlink v1.1.0 h1:mpdLgm+brq10nI9zM1BpX1kpDbh3NLl3RSnVq6ZSkfg=
github.com/mdlayher/netlink v1.1.0/go.mod h1:H4WCitaheIsdF9yOYu8CFmCgQthAPIWZmcKp9uZHgmY= github.com/mdlayher/netlink v1.1.0/go.mod h1:H4WCitaheIsdF9yOYu8CFmCgQthAPIWZmcKp9uZHgmY=
github.com/mdlayher/sdnotify v0.0.0-20200625151349-e4a4f32afc4a h1:wMv2mvcHRH4jqIxaVL5t6gSq1hjPiaWH7TOcA0Z+uNo=
github.com/mdlayher/sdnotify v0.0.0-20200625151349-e4a4f32afc4a/go.mod h1:HtjVsQfsrBm1GDcDTUFn4ZXhftxTwO/hxrvEiRc61U4=
github.com/miekg/dns v1.1.30 h1:Qww6FseFn8PRfw07jueqIXqodm0JKiiKuK0DeXSqfyo= github.com/miekg/dns v1.1.30 h1:Qww6FseFn8PRfw07jueqIXqodm0JKiiKuK0DeXSqfyo=
github.com/miekg/dns v1.1.30/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM= github.com/miekg/dns v1.1.30/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
github.com/op/go-logging v0.0.0-20160315200505-970db520ece7 h1:lDH9UUVJtmYCjyT0CI4q8xvlXPxeZ0gYCVvWbmPlp88= github.com/op/go-logging v0.0.0-20160315200505-970db520ece7 h1:lDH9UUVJtmYCjyT0CI4q8xvlXPxeZ0gYCVvWbmPlp88=
@ -93,6 +97,8 @@ github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJy
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4= github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/tailscale/depaware v0.0.0-20201003033024-5d95aab075be h1:ZKe3kVGbu/goUVxXcaCPbQ4b0STQ5NsCpG90CG6mw/c= github.com/tailscale/depaware v0.0.0-20201003033024-5d95aab075be h1:ZKe3kVGbu/goUVxXcaCPbQ4b0STQ5NsCpG90CG6mw/c=
github.com/tailscale/depaware v0.0.0-20201003033024-5d95aab075be/go.mod h1:jissDaJNHiyV2tFdr3QyNEfsZrax/i2yQiSO+CljThI= github.com/tailscale/depaware v0.0.0-20201003033024-5d95aab075be/go.mod h1:jissDaJNHiyV2tFdr3QyNEfsZrax/i2yQiSO+CljThI=
github.com/tailscale/wireguard-go v0.0.0-20201021041318-a6168fd06b3f h1:KMx58dbn2YCutzOvjNHgmvbwQH7nGE8H+J42Nenjl/M=
github.com/tailscale/wireguard-go v0.0.0-20201021041318-a6168fd06b3f/go.mod h1:WXq+IkSOJGIgfF1XW+4z4oW+LX/TXzU9DcKlT5EZLi4=
github.com/tailscale/depaware v0.0.0-20201210233412-71b54857b5d9 h1:IquU2Mhy4Q+xUYoRLHMiEamd80OShhYXhTNywEbQu3g= github.com/tailscale/depaware v0.0.0-20201210233412-71b54857b5d9 h1:IquU2Mhy4Q+xUYoRLHMiEamd80OShhYXhTNywEbQu3g=
github.com/tailscale/depaware v0.0.0-20201210233412-71b54857b5d9/go.mod h1:jissDaJNHiyV2tFdr3QyNEfsZrax/i2yQiSO+CljThI= github.com/tailscale/depaware v0.0.0-20201210233412-71b54857b5d9/go.mod h1:jissDaJNHiyV2tFdr3QyNEfsZrax/i2yQiSO+CljThI=
github.com/tailscale/depaware v0.0.0-20201214215404-77d1e9757027 h1:lK99QQdH3yBWY6aGilF+IRlQIdmhzLrsEmF6JgN+Ryw= github.com/tailscale/depaware v0.0.0-20201214215404-77d1e9757027 h1:lK99QQdH3yBWY6aGilF+IRlQIdmhzLrsEmF6JgN+Ryw=
@ -134,7 +140,7 @@ golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLL
golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20191007182048-72f939374954/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= golang.org/x/net v0.0.0-20191007182048-72f939374954/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
golang.org/x/net v0.0.0-20200822124328-c89045814202 h1:VvcQYSHwXgi7W+TpUR6A9g6Up98WAHf3f/ulnJ62IyA= golang.org/x/net v0.0.0-20200822124328-c89045814202 h1:VvcQYSHwXgi7W+TpUR6A9g6Up98WAHf3f/ulnJ62IyA=
golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA= golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU= golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
@ -161,6 +167,7 @@ golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7w
golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200501145240-bc7a7d42d5c3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201018230417-eeed37f84f13/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20201018230417-eeed37f84f13/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20201107080550-4d91cf3a1aaf/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20201107080550-4d91cf3a1aaf/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

@ -34,6 +34,7 @@ import (
"tailscale.com/smallzstd" "tailscale.com/smallzstd"
"tailscale.com/types/logger" "tailscale.com/types/logger"
"tailscale.com/util/pidowner" "tailscale.com/util/pidowner"
"tailscale.com/util/systemd"
"tailscale.com/version" "tailscale.com/version"
"tailscale.com/wgengine" "tailscale.com/wgengine"
) )
@ -589,6 +590,7 @@ func Run(ctx context.Context, logf logger.Logf, logid string, getEngine func() (
}) })
} }
systemd.Ready()
for i := 1; ctx.Err() == nil; i++ { for i := 1; ctx.Err() == nil; i++ {
var c net.Conn var c net.Conn
var err error var err error

@ -29,6 +29,7 @@ import (
"tailscale.com/types/empty" "tailscale.com/types/empty"
"tailscale.com/types/key" "tailscale.com/types/key"
"tailscale.com/types/logger" "tailscale.com/types/logger"
"tailscale.com/util/systemd"
"tailscale.com/version" "tailscale.com/version"
"tailscale.com/wgengine" "tailscale.com/wgengine"
"tailscale.com/wgengine/filter" "tailscale.com/wgengine/filter"
@ -1322,6 +1323,8 @@ func (b *LocalBackend) enterState(newState State) {
notify := b.notify notify := b.notify
bc := b.c bc := b.c
networkUp := b.prevIfState.AnyInterfaceUp() networkUp := b.prevIfState.AnyInterfaceUp()
activeLogin := b.activeLogin
authURL := b.authURL
b.mu.Unlock() b.mu.Unlock()
if state == newState { if state == newState {
@ -1339,6 +1342,7 @@ func (b *LocalBackend) enterState(newState State) {
switch newState { switch newState {
case NeedsLogin: case NeedsLogin:
systemd.Status("Needs login: %s", authURL)
b.blockEngineUpdates(true) b.blockEngineUpdates(true)
fallthrough fallthrough
case Stopped: case Stopped:
@ -1346,12 +1350,20 @@ func (b *LocalBackend) enterState(newState State) {
if err != nil { if err != nil {
b.logf("Reconfig(down): %v", err) b.logf("Reconfig(down): %v", err)
} }
if authURL == "" {
systemd.Status("Stopped; run 'tailscale up' to log in")
}
case Starting, NeedsMachineAuth: case Starting, NeedsMachineAuth:
b.authReconfig() b.authReconfig()
// Needed so that UpdateEndpoints can run // Needed so that UpdateEndpoints can run
b.e.RequestStatus() b.e.RequestStatus()
case Running: case Running:
break var addrs []string
for _, addr := range b.netMap.Addresses {
addrs = append(addrs, addr.IP.String())
}
systemd.Status("Connected; %s; %s", activeLogin, strings.Join(addrs, " "))
default: default:
b.logf("[unexpected] unknown newState %#v", newState) b.logf("[unexpected] unknown newState %#v", newState)
} }

@ -0,0 +1,14 @@
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
Package systemd contains a minimal wrapper around systemd-notify to enable
applications to signal readiness and status to systemd.
This package will only have effect on Linux systems running Tailscale in a
systemd unit with the Type=notify flag set. On other operating systems (or
when running in a Linux distro without being run from inside systemd) this
package will become a no-op.
*/
package systemd

@ -0,0 +1,75 @@
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build linux
package systemd
import (
"log"
"sync"
"github.com/mdlayher/sdnotify"
)
var getNotifyOnce struct {
sync.Once
v *sdnotify.Notifier
}
type logOnce struct {
sync.Once
}
func (l *logOnce) logf(format string, args ...interface{}) {
l.Once.Do(func() {
log.Printf(format, args...)
})
}
var (
readyOnce = &logOnce{}
statusOnce = &logOnce{}
)
func notifier() *sdnotify.Notifier {
getNotifyOnce.Do(func() {
var err error
getNotifyOnce.v, err = sdnotify.New()
if err != nil {
log.Printf("systemd: systemd-notifier error: %v", err)
}
})
return getNotifyOnce.v
}
// Ready signals readiness to systemd. This will unblock service dependents from starting.
func Ready() {
err := notifier().Notify(sdnotify.Ready)
if err != nil {
readyOnce.logf("systemd: error notifying: %v", err)
}
}
// Status sends a single line status update to systemd so that information shows up
// in systemctl output. For example:
//
// $ systemctl status tailscale
// ● tailscale.service - Tailscale client daemon
// Loaded: loaded (/nix/store/qc312qcy907wz80fqrgbbm8a9djafmlg-unit-tailscale.service/tailscale.service; enabled; vendor preset: enabled)
// Active: active (running) since Tue 2020-11-24 17:54:07 EST; 13h ago
// Main PID: 26741 (.tailscaled-wra)
// Status: "Connected; user@host.domain.tld; 100.101.102.103"
// IP: 0B in, 0B out
// Tasks: 22 (limit: 4915)
// Memory: 30.9M
// CPU: 2min 38.469s
// CGroup: /system.slice/tailscale.service
// └─26741 /nix/store/sv6cj4mw2jajm9xkbwj07k29dj30lh0n-tailscale-date.20200727/bin/tailscaled --port 41641
func Status(format string, args ...interface{}) {
err := notifier().Notify(sdnotify.Statusf(format, args...))
if err != nil {
statusOnce.logf("systemd: error notifying: %v", err)
}
}

@ -0,0 +1,10 @@
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !linux
package systemd
func Ready() {}
func Status(string, ...interface{}) {}
Loading…
Cancel
Save