什么是暂停容器？
What are the pause containers?
在我的 IBM Cloud Private 中，我看到几个暂停容器。
谁能解释一下这些的用途？通常，我可以到达 运行 容器中的 bash shell，但不能到达暂停的容器。
# docker ps | grep pause
ee5f3f6b9fc0 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_catalog-catalog-apiserver-8qxrf_kube-system_3b4b107d-0b72-11e8-9f22-005056227136_0
d238dad0c5b8 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_auth-apikeys-bk28g_kube-system_3b731880-0b72-11e8-9f22-005056227136_0
0196efb043ca ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_icp-router-htnhz_kube-system_3b8d25d3-0b72-11e8-9f22-005056227136_0
b09dc1759d09 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_unified-router-bskb6_kube-system_3af9d44e-0b72-11e8-9f22-005056227136_0
8a392f174c24 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_auth-pap-gfh7q_kube-system_3aa5b311-0b72-11e8-9f22-005056227136_0
0ac776eb9ced ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_platform-api-zr5pz_kube-system_3b2ce527-0b72-11e8-9f22-005056227136_0
107896ebfcd6 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_icp-ds-0_kube-system_3a9200f8-0b72-11e8-9f22-005056227136_0
f95df5fbcc4a ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_image-manager-0_kube-system_3ae74f5c-0b72-11e8-9f22-005056227136_0
a9d30804f222 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_auth-idp-h4fmt_kube-system_3ad78a99-0b72-11e8-9f22-005056227136_0
eaae55900637 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_catalog-ui-jv9sq_kube-system_3af5cb32-0b72-11e8-9f22-005056227136_0
4ace18a84d8b ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_auth-pdp-9vhzx_kube-system_3ae0a074-0b72-11e8-9f22-005056227136_0
98b70f6074c7 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_calico-policy-controller-5997c6c956-cx774_kube-system_39bfecef-0b72-11e8-9f22-005056227136_0
63a0340e3de8 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_rescheduler-jqtd4_kube-system_3a6d4b05-0b72-11e8-9f22-005056227136_0
cace008e71b1 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_kube-dns-9494dc977-7gwpx_kube-system_39a15b6b-0b72-11e8-9f22-005056227136_0
80a18b538ef3 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_platform-ui-k5g7h_kube-system_3a98aad3-0b72-11e8-9f22-005056227136_0
bea43bfc8d70 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_catalog-catalog-controller-manager-bd9f49c8c-4fqcp_kube-system_39653745-0b72-11e8-9f22-005056227136_0
f54f329e50ae ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_helm-api-5d8b6d6f9c-4rl2s_kube-system_396ade8d-0b72-11e8-9f22-005056227136_0
6812e3fee9cc ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_tiller-deploy-55fb4d8dcc-pcxbj_kube-system_396b0005-0b72-11e8-9f22-005056227136_0
69a840bc394b ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_helmrepo-5878d9d858-wlcrj_kube-system_396506a5-0b72-11e8-9f22-005056227136_0
03bc9ce0413d ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_heapster-5fd94775d5-28t6w_kube-system_396b0dd6-0b72-11e8-9f22-005056227136_0
8763167695b3 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_filebeat-ds-amd64-q54pc_kube-system_9b8515d6-0b52-11e8-99a8-005056227136_1
461e5de11ee1 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_calico-node-amd64-ql292_kube-system_53492619-0b51-11e8-99a8-005056227136_1
f73e2eb9dbaf ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_k8s-master-192.168.142.103_kube-system_c39080358687c72432da5f6de4b6fff9_1
c08f029af60e ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_k8s-mariadb-192.168.142.103_kube-system_6b640df7dae2cb064ebc450b273ce62a_1
0174b5c35963 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_k8s-proxy-192.168.142.103_kube-system_b9f441de4995384d245d71fdb65e2cc2_1
f6befd10c479 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_k8s-etcd-192.168.142.103_kube-system_a5150d8f6ee1f8047b05f9b2d5cbcaba_1
'pause'容器是一个保存网络命名空间的容器
对于豆荚。 Kubernetes 创建暂停容器以获取相应 pod 的 IP 地址并为加入该 pod 的所有其他容器设置网络命名空间。
您可以访问以下链接了解详情。
https://groups.google.com/forum/#!topic/kubernetes-users/jVjv0QK4b_o
是的，暂停容器是每个 pod 的一部分，负责创建共享网络，为该 pod 内的所有业务容器分配 pod 内的 ip 地址，同时暂停容器共享整个 pod 的卷。如果暂停容器死了，kubernetes 认为 pod 死了并杀死它并重新安排一个新的。
如果您docker停止暂停容器，您会发现 Pod 将拥有一个新的内部 IP，而 Pod 的重启计数没有任何变化。但是，如果您 docker 停止 Pod 的容器，您会发现 Pod 状态为已完成，然后如果您 docker 启动相同的容器，您会再次在 运行 中找到 Pod Pod 的重启计数递增 1，IP 没有变化。
Pause 是一个秘密容器，运行在 Kubernetes 中的每个 pod 上。这个容器的主要工作是保持命名空间打开，以防 pod 上的所有其他容器死亡。
在我的 IBM Cloud Private 中，我看到几个暂停容器。
谁能解释一下这些的用途？通常，我可以到达 运行 容器中的 bash shell，但不能到达暂停的容器。
# docker ps | grep pause
ee5f3f6b9fc0 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_catalog-catalog-apiserver-8qxrf_kube-system_3b4b107d-0b72-11e8-9f22-005056227136_0
d238dad0c5b8 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_auth-apikeys-bk28g_kube-system_3b731880-0b72-11e8-9f22-005056227136_0
0196efb043ca ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_icp-router-htnhz_kube-system_3b8d25d3-0b72-11e8-9f22-005056227136_0
b09dc1759d09 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_unified-router-bskb6_kube-system_3af9d44e-0b72-11e8-9f22-005056227136_0
8a392f174c24 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_auth-pap-gfh7q_kube-system_3aa5b311-0b72-11e8-9f22-005056227136_0
0ac776eb9ced ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_platform-api-zr5pz_kube-system_3b2ce527-0b72-11e8-9f22-005056227136_0
107896ebfcd6 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_icp-ds-0_kube-system_3a9200f8-0b72-11e8-9f22-005056227136_0
f95df5fbcc4a ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_image-manager-0_kube-system_3ae74f5c-0b72-11e8-9f22-005056227136_0
a9d30804f222 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_auth-idp-h4fmt_kube-system_3ad78a99-0b72-11e8-9f22-005056227136_0
eaae55900637 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_catalog-ui-jv9sq_kube-system_3af5cb32-0b72-11e8-9f22-005056227136_0
4ace18a84d8b ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_auth-pdp-9vhzx_kube-system_3ae0a074-0b72-11e8-9f22-005056227136_0
98b70f6074c7 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_calico-policy-controller-5997c6c956-cx774_kube-system_39bfecef-0b72-11e8-9f22-005056227136_0
63a0340e3de8 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_rescheduler-jqtd4_kube-system_3a6d4b05-0b72-11e8-9f22-005056227136_0
cace008e71b1 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_kube-dns-9494dc977-7gwpx_kube-system_39a15b6b-0b72-11e8-9f22-005056227136_0
80a18b538ef3 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_platform-ui-k5g7h_kube-system_3a98aad3-0b72-11e8-9f22-005056227136_0
bea43bfc8d70 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_catalog-catalog-controller-manager-bd9f49c8c-4fqcp_kube-system_39653745-0b72-11e8-9f22-005056227136_0
f54f329e50ae ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_helm-api-5d8b6d6f9c-4rl2s_kube-system_396ade8d-0b72-11e8-9f22-005056227136_0
6812e3fee9cc ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_tiller-deploy-55fb4d8dcc-pcxbj_kube-system_396b0005-0b72-11e8-9f22-005056227136_0
69a840bc394b ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_helmrepo-5878d9d858-wlcrj_kube-system_396506a5-0b72-11e8-9f22-005056227136_0
03bc9ce0413d ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_heapster-5fd94775d5-28t6w_kube-system_396b0dd6-0b72-11e8-9f22-005056227136_0
8763167695b3 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_filebeat-ds-amd64-q54pc_kube-system_9b8515d6-0b52-11e8-99a8-005056227136_1
461e5de11ee1 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_calico-node-amd64-ql292_kube-system_53492619-0b51-11e8-99a8-005056227136_1
f73e2eb9dbaf ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_k8s-master-192.168.142.103_kube-system_c39080358687c72432da5f6de4b6fff9_1
c08f029af60e ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_k8s-mariadb-192.168.142.103_kube-system_6b640df7dae2cb064ebc450b273ce62a_1
0174b5c35963 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_k8s-proxy-192.168.142.103_kube-system_b9f441de4995384d245d71fdb65e2cc2_1
f6befd10c479 ibmcom/pause:3.0 "/pause" About an hour ago Up About an hour k8s_POD_k8s-etcd-192.168.142.103_kube-system_a5150d8f6ee1f8047b05f9b2d5cbcaba_1
'pause'容器是一个保存网络命名空间的容器 对于豆荚。 Kubernetes 创建暂停容器以获取相应 pod 的 IP 地址并为加入该 pod 的所有其他容器设置网络命名空间。
您可以访问以下链接了解详情。
https://groups.google.com/forum/#!topic/kubernetes-users/jVjv0QK4b_o
是的，暂停容器是每个 pod 的一部分，负责创建共享网络，为该 pod 内的所有业务容器分配 pod 内的 ip 地址，同时暂停容器共享整个 pod 的卷。如果暂停容器死了，kubernetes 认为 pod 死了并杀死它并重新安排一个新的。
如果您docker停止暂停容器，您会发现 Pod 将拥有一个新的内部 IP，而 Pod 的重启计数没有任何变化。但是，如果您 docker 停止 Pod 的容器，您会发现 Pod 状态为已完成，然后如果您 docker 启动相同的容器，您会再次在 运行 中找到 Pod Pod 的重启计数递增 1，IP 没有变化。
Pause 是一个秘密容器，运行在 Kubernetes 中的每个 pod 上。这个容器的主要工作是保持命名空间打开，以防 pod 上的所有其他容器死亡。