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aknuds1's questions

Martin Hope
aknuds1
Asked: 2016-05-02 14:56:55 +0800 CST
  • 1

在 CoreOS 899.15.0 上，如何通过fleetctl 更新之前提交的单元文件？

我之前已经提交了单元文件[email protected]，但是想将其更新为修订版：

$ fleetctl list-unit-files
UNIT                HASH    DSTATE      STATE       TARGET
[email protected]    76b05ae inactive    inactive    -
[email protected]              faa7a16 inactive    inactive    -

当我尝试重新提交 [email protected] 时，fleetctl 只警告我它的本地版本和注册表版本不同：

$ fleetctl submit rethinkdb\@.service
WARNING: Unit [email protected] in registry differs from local unit file [email protected]
coreos
Martin Hope
aknuds1
Asked: 2016-04-14 03:21:02 +0800 CST
  • 1

我在我的 CoreOS 云配置中定义了一次性服务，但由于无法从谷歌云存储（通过 wget）下载文件而失败：

4 月 13 日 11:09:56 staging-node-ys9y.c.experimentalberlin.internal sh[1132]：连接到 storage.googleapis.com|74.125.133.128|:443... 失败：连接超时。

我应该如何确保该服务能够从 Internet 下载文件？

我的云配置

#cloud-config
coreos:
  units:
    - name: bootstrap.service
      command: start
      content: |
        [Unit]
        Description=Bootstrap instance
        After=network-online.target
        Requires=network-online.target

        [Service]
        Type=oneshot
        RemainAfterExit=true
        ExecStart=/usr/bin/mkdir -p /tmp/kubernetes-staging
        ExecStart=cd /tmp/kubernetes-staging
        ExecStart=/bin/sh -c "cd /tmp/kubernetes-staging && wget https://storage.googleapis.com/experimentalberlin/staging.tar.gz && tar xf staging.tar.gz"
        ExecStart=/tmp/kubernetes-staging/worker/bootstrap.sh

        [Install]
        WantedBy=local.target
systemd wget cloud-config coreos
Martin Hope
aknuds1
Asked: 2016-03-30 06:27:10 +0800 CST
  • 2

我在 Google Compute Engine 实例上运行 CoreOS beta 991.1.0，其中 cloud-config 通过user_data元数据变量进行配置。我的云配置如下所示：

#cloud-config
write_files:
  - path: "/etc/kubernetes/kube.conf"
    permissions: "0644"
    owner: "root"
    content: |
      apiVersion: v1
      kind: Config
      clusters:
      - name: kube
        cluster:
          server: https://127.0.0.1:443
          certificate-authority: /etc/kubernetes/ssl/ca.pem
      users:
      - name: kubelet
        user:
          client-certificate: /etc/kubernetes/ssl/master-client.pem
          client-key: /etc/kubernetes/ssl/master-client-key.pem
      contexts:
      - context:
          cluster: kube
          user: kubelet
ssh_authorized_keys:
  - "SECRET"
coreos:
  etcd2:
    discovery: https://discovery.etcd.io/106b575a45f2abefdaea40ebba4d0d84
    initial-advertise-peer-urls: https://$private_ipv4:2380
    listen-peer-urls: https://$private_ipv4:2380
    listen-client-urls: https://0.0.0.0:2379
    advertise-client-urls: https://$private_ipv4:2379
  units:
    - name: etcd2.service
      command: start
      drop-ins:
        - name: 30-certificates.conf
          content: |
            [Service]
            # Client Env Vars
            Environment=ETCD_TRUSTED_CA_FILE=/etc/kubernetes/ssl/ca.pem
            Environment=ETCD_CERT_FILE=/etc/kubernetes/ssl/master-client.pem
            Environment=ETCD_KEY_FILE=/etc/kubernetes/ssl/master-client-key.pem
            # Peer Env Vars
            Environment=ETCD_PEER_TRUSTED_CA_FILE=/etc/kubernetes/ssl/ca.pem
            Environment=ETCD_PEER_CERT_FILE=/etc/kubernetes/ssl/master-peer.pem
            Environment=ETCD_PEER_KEY_FILE=/etc/kubernetes/ssl/master-peer-key.pem
    - name: fleet.service
      command: start
    - name: swap.service
      command: start
      content: |
        [Unit]
        Description=Turn on swap

        [Service]
        Type=oneshot
        Environment="SWAPFILE=/swap"
        RemainAfterExit=true
        ExecStartPre=/usr/sbin/losetup -f $SWAPFILE
        ExecStart=/usr/bin/sh -c "/sbin/swapon $(/usr/sbin/losetup -j $SWAPFILE | /usr/bin/cut -d : -f 1)"
        ExecStop=/usr/bin/sh -c "/sbin/swapoff $(/usr/sbin/losetup -j $SWAPFILE | /usr/bin/cut -d : -f 1)"
        ExecStopPost=/usr/bin/sh -c "/usr/sbin/losetup -d $(/usr/sbin/losetup -j $SWAPFILE | /usr/bin/cut -d : -f 1)"

        [Install]
        WantedBy=local.target

但是，即使我已将 etcd2 配置为在启动时启动，它也没有。为什么 etcd2 不会自动启动？

google-compute-engine
Martin Hope
aknuds1
Asked: 2016-01-13 22:15:05 +0800 CST
  • 6

在我的 Ubuntu 15.04 x64 Docker (1.9.1-cs2, build 4ade326) 主机上，我的内存使用量过多，目前总计约 940 MB 物理内存和约 1 GB 交换内存。据了解top，Docker 负责消耗大约 780 MB 的交换内存。我怎样才能弄清楚为什么 Docker 使用了这么多交换？

我主要运行一个 Node.js Docker 容器，它似乎并没有消耗那么多内存。内存使用量也在几个小时内上升，因为它在启动后相当温和。

ubuntu