docker swarm 修改集羣ip

概述

事情是這樣的，我在樹梅派上運行着docker swarm的集羣原來的ip是192.168.0.113，以後由於搬家，而後ip變成了192.168.11.113，接着的事情你們確定能夠想出來，就是node和manager確定鏈接不上了。因此我直接把node移出集羣，而後從新加入，可是那時候的join token的命令是下面這樣子的

╰─➤  docker swarm join-token worker 
To add a worker to this swarm, run the following command:

    docker swarm join --token SWMTKN-1-0shhd0b7uwajhgymxgpp1nv5u17jvcup9vvmhnqkg77ds57e5h-57e7hvjaxaagxtxddz416q5z2 192.168.0.113:2377

當時我就直接把最後的ip修改成192.168.11.113這樣把node加入集羣，沒錯，的確能夠加入，可是不知道爲何，node仍是往192.168.0.113去鏈接，致使報錯

╰─➤  tail -f daemon.log                                                                                                                                                                                 1 ↵
Jul  4 08:07:16 pi-slave dockerd[21221]: time="2018-07-04T08:07:16.316088897Z" level=info msg="grpc: addrConn.resetTransport failed to create client transport: connection error: desc = \"transport: dial tcp 192.168.0.113:2377: getsockopt: no route to host\"; Reconnecting to {192.168.0.113:2377 <nil>}" module=grpc
Jul  4 08:07:16 pi-slave dockerd[21221]: time="2018-07-04T08:07:16.317349637Z" level=info msg="Failed to dial 192.168.0.113:2377: grpc: the connection is closing; please retry." module=grpc
Jul  4 08:07:19 pi-slave dockerd[21221]: time="2018-07-04T08:07:19.316151478Z" level=info msg="grpc: addrConn.resetTransport failed to create client transport: connection error: desc = \"transport: dial tcp 192.168.0.113:2377: getsockopt: no route to host\"; Reconnecting to {192.168.0.113:2377 <nil>}" module=grpc
Jul  4 08:07:22 pi-slave dockerd[21221]: time="2018-07-04T08:07:22.318750223Z" level=info msg="grpc: addrConn.resetTransport failed to create client transport: connection error: desc = \"transport: dial tcp 192.168.0.113:2377: getsockopt: no route to host\"; Reconnecting to {192.168.0.113:2377 <nil>}" module=grpc
Jul  4 08:07:22 pi-slave dockerd[21221]: time="2018-07-04T08:07:22.319398354Z" level=error msg="agent: session failed" backoff=8s error="rpc error: code = Unavailable desc = grpc: the connection is unavailable" module=node/agent node.id=yi1u62gxyockd23h2z4nm3of1
Jul  4 08:07:22 pi-slave dockerd[21221]: time="2018-07-04T08:07:22.319955650Z" level=info msg="manager selected by agent for new session: {h6i2x0hals6za31uya16zlmli 192.168.0.113:2377}" module=node/agent node.id=yi1u62gxyockd23h2z4nm3of1
Jul  4 08:07:22 pi-slave dockerd[21221]: time="2018-07-04T08:07:22.320147058Z" level=info msg="waiting 7.379239722s before registering session" module=node/agent node.id=yi1u62gxyockd23h2z4nm3of1
Jul  4 08:07:25 pi-slave dockerd[21221]: time="2018-07-04T08:07:25.315780534Z" level=info msg="grpc: addrConn.resetTransport failed to create client transport: connection error: desc = \"transport: dial tcp 192.168.0.113:2377: getsockopt: no route to host\"; Reconnecting to {192.168.0.113:2377 <nil>}" module=grpc
Jul  4 08:07:25 pi-slave dockerd[21221]: time="2018-07-04T08:07:25.318872383Z" level=info msg="Failed to dial 192.168.0.113:2377: grpc: the connection is closing; please retry." module=grpc
Jul  4 08:07:25 pi-slave dockerd[21221]: time="2018-07-04T08:07:25.318573109Z" level=info msg="grpc: addrConn.resetTransport failed to create client transport: connection error: desc = \"transport: dial tcp 192.168.0.113:2377: getsockopt: no route to host\"; Reconnecting to {192.168.0.113:2377 <nil>}" module=grpc
Jul  4 08:07:28 pi-slave dockerd[21221]: time="2018-07-04T08:07:28.316269050Z" level=info msg="grpc: addrConn.resetTransport failed to create client transport: connection error: desc = \"transport: dial tcp 192.168.0.113:2377: getsockopt: no route to host\"; Reconnecting to {192.168.0.113:2377 <nil>}" module=grpc
Jul  4 08:07:31 pi-slave dockerd[21221]: time="2018-07-04T08:07:31.331695034Z" level=info msg="grpc: addrConn.resetTransport failed to create client transport: connection error: desc = \"transport: dial tcp 192.168.0.113:2377: getsockopt: no route to host\"; Reconnecting to {192.168.0.113:2377 <nil>}" module=grpc
Jul  4 08:07:31 pi-slave dockerd[21221]: time="2018-07-04T08:07:31.332270925Z" level=error msg="agent: session failed" backoff=8s error="rpc error: code = Unavailable desc = grpc: the connection is unavailable" module=node/agent node.id=yi1u62gxyockd23h2z4nm3of1
Jul  4 08:07:31 pi-slave dockerd[21221]: time="2018-07-04T08:07:31.332991816Z" level=info msg="manager selected by agent for new session: {h6i2x0hals6za31uya16zlmli 192.168.0.113:2377}" module=node/agent node.id=yi1u62gxyockd23h2z4nm3of1
Jul  4 08:07:31 pi-slave dockerd[21221]: time="2018-07-04T08:07:31.333203172Z" level=info msg="waiting 1.698796755s before registering session" module=node/agent node.id=yi1u62gxyockd23h2z4nm3of1

以後在qq羣 facebook裏面問了下，仍是沒有人能夠給出一個確定的解決方式，從新生成join token也不行

╭─root@pi-master /etc/default  
╰─➤  docker swarm join-token --rotate worker 
Successfully rotated worker join token.

To add a worker to this swarm, run the following command:

    docker swarm join --token SWMTKN-1-0shhd0b7uwajhgymxgpp1nv5u17jvcup9vvmhnqkg77ds57e5h-34adsf2isqqqnn7gd5hnhumdh 192.168.0.113:2377

生成出來的ip仍是192.168.0.113，那麼就沒辦法了，由於是測試環境，只能暴力解決了從新創建集羣

從新創建集羣

首先把worker和manager都直接leave集羣了，首先leave node

docker swarm leave --force

以後是manager

docker swarm leave --force

由於個人機器上沒有什麼重要的容器，因此直接這麼作了

接着從新創建集羣

╭─root@pi-master /etc/default  
╰─➤  docker swarm init
Swarm initialized: current node (wylbqh0q0p0yromn6hh44jrvx) is now a manager.

To add a worker to this swarm, run the following command:

    docker swarm join --token SWMTKN-1-0n8n2vbtnuksw78opuex5hhtgffzn36dbii7u1dp5rrul8z85p-3buc8f7h2n8st570hcx9lwthk 192.168.11.113:2377

To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.

能夠看到上面的ip變爲192.168.11.113了 把node加入集羣

docker swarm join --token SWMTKN-1-0n8n2vbtnuksw78opuex5hhtgffzn36dbii7u1dp5rrul8z85p-3buc8f7h2n8st570hcx9lwthk 192.168.11.113:2377

最後看下docker的日誌

╭─root@pi-slave /var/log  
╰─➤  tail -f daemon.log                                                                                                                 
Jul  4 08:34:35 pi-slave dhcpcd[517]: docker_gwbridge: using IPv4LL address 169.254.160.155
Jul  4 08:34:35 pi-slave avahi-daemon[306]: Registering new address record for 169.254.160.155 on docker_gwbridge.IPv4.
Jul  4 08:34:35 pi-slave dhcpcd[517]: docker_gwbridge: adding route to 169.254.0.0/16
Jul  4 08:34:35 pi-slave dhcpcd[517]: veth06a7c80: using IPv4LL address 169.254.142.194
Jul  4 08:34:35 pi-slave avahi-daemon[306]: Joining mDNS multicast group on interface veth06a7c80.IPv4 with address 169.254.142.194.
Jul  4 08:34:35 pi-slave avahi-daemon[306]: New relevant interface veth06a7c80.IPv4 for mDNS.
Jul  4 08:34:35 pi-slave avahi-daemon[306]: Registering new address record for 169.254.142.194 on veth06a7c80.IPv4.
Jul  4 08:34:35 pi-slave dhcpcd[517]: veth06a7c80: adding route to 169.254.0.0/16
Jul  4 08:34:38 pi-slave dhcpcd[517]: veth06a7c80: no IPv6 Routers available
Jul  4 08:34:38 pi-slave dhcpcd[517]: docker_gwbridge: no IPv6 Routers available

ok，一切正常

要值得注意的是我上面這麼作以後全部的容器就都沒有了，幾乎就是從新安裝了一次集羣，因此確定不是最佳的解決方式，若是有人知道怎麼處理這個問題歡迎聯繫我能夠告訴我一下

接着就能夠建立容器了

docker network create --driver=overlay --subnet=192.168.12.1/24 visualizer

值得注意的是我如今才發現，當你在manager裏面建立了這個overlay網絡以後若是你不作在這個網絡建立容器或者什麼其餘能夠影響到worker節點的操做的時候，那麼你就是不能在worker節點上看到這個網絡的 建立容器

docker service create --name visualizer --replicas=3 --publish=8088:8080 --network=visualizer --mount=type=bind,src=/var/run/docker.sock,dst=/var/run/docker.sock alexellis2/visualizer-arm

歡迎關注Bboysoul的博客www.bboysoul.com Have Fun