Description:

We have a services what running on the Google Container Engine, based on the golang library go-micro and these services running fine, except random restarting during the day.

Problem:

Pods is restarting pretty often during the day. This affects to our services and core services like kube-dns or nginx-ingress. After checking of the logs, it looks like a networking problem, after this docker daemon and kubelet is restarting, and takes to restart our services. It might happen 10 times per day or 2 times per day. This is not constantly.

Details:

Version:

kubectl version                                                                          
Client Version: version.Info{Major:"1", Minor:"5", GitVersion:"v1.5.2",    GitCommit:"08e099554f3c31f6e6f07b448ab3ed78d0520507", GitTreeState:"clean", BuildDate:"2017-01-12T04:57:25Z", GoVersion:"go1.7.4", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"5", GitVersion:"v1.5.3", GitCommit:"029c3a408176b55c30846f0faedf56aae5992e9b", GitTreeState:"clean", BuildDate:"2017-02-15T06:34:56Z", GoVersion:"go1.7.4", Compiler:"gc", Platform:"linux/amd64"}

OS:

uname -a
Linux microservices-g1-small-25eedb64-w265 4.4.21+ #1 SMP  Thu Nov 10 02:50:15 PST 2016 x86_64 Intel(R) Xeon(R) CPU @ 2.30GHz   GenuineIntel GNU/Linux

cat /etc/lsb-release
CHROMEOS_AUSERVER=https://tools.google.com/service/update2
CHROMEOS_RELEASE_BOARD=lakitu-signed-mpkeys
CHROMEOS_RELEASE_BRANCH_NUMBER=0
CHROMEOS_RELEASE_BUILDER_PATH=lakitu-release/R56-8977.0.0
CHROMEOS_RELEASE_BUILD_NUMBER=8977
CHROMEOS_RELEASE_BUILD_TYPE=Official Build
CHROMEOS_RELEASE_CHROME_MILESTONE=56
CHROMEOS_RELEASE_DESCRIPTION=8977.0.0 (Official Build) dev-channel lakitu 
CHROMEOS_RELEASE_NAME=Chrome OS
CHROMEOS_RELEASE_PATCH_NUMBER=0
CHROMEOS_RELEASE_TRACK=dev-channel
CHROMEOS_RELEASE_VERSION=8977.0.0
DEVICETYPE=OTHER
GOOGLE_RELEASE=8977.0.0
HWID_OVERRIDE=LAKITU DOGFOOD

Golang microservice framework go-micro

I tried to check the logs for figure out what happening and what i found:

rvices-g1-small-25eedb64-s0p6 update_engine[899]: [0310/064853:INFO:update_manager-inl.h(52)] ChromeOSPolicy::UpdateCheckAllowed: START Mar 10 06:53:28 gke-microservices-g1-small-25eedb64-s0p6 update_engine[899]: [0310/064908:WARNING:evaluation_context-inl.h(43)] Error reading Variable update_disabled: "No value set for update_disabled" Mar 10 06:53:28 gke-microservices-g1-small-25eedb64-s0p6 update_engine[899]: [0310/064932:WARNING:evaluation_context-inl.h(43)] Error reading Variable release_channel_delegated: "No value set for release_channel_delegated" Mar 10 06:53:28 gke-microservices-g1-small-25eedb64-s0p6 update_engine[899]: [0310/065015:INFO:chromeos_policy.cc(314)] Periodic check interval not satisfied, blocking until 3/10/2017 6:58:27 GMT Mar 10 06:53:28 gke-microservices-g1-small-25eedb64-s0p6 update_engine[899]: [0310/065025:INFO:update_manager-inl.h(74)] ChromeOSPolicy::UpdateCheckAllowed: END Mar 10 06:53:28 gke-microservices-g1-small-25eedb64-s0p6 health-monitor.sh[1435]: Docker daemon failed! Mar 10 06:53:28 gke-microservices-g1-small-25eedb64-s0p6 health-monitor.sh[1435]: Docker daemon failed! Mar 10 06:53:28 gke-microservices-g1-small-25eedb64-s0p6 health-monitor.sh[1435]: Docker daemon failed! Mar 10 06:53:28 gke-microservices-g1-small-25eedb64-s0p6 health-monitor.sh[1435]: Docker daemon failed! Mar 10 06:53:28 gke-microservices-g1-small-25eedb64-s0p6 metrics_daemon[903]: [INFO:upload_service.cc(103)] Metrics disabled. Don't upload metrics samples. Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 health-monitor.sh[1432]: okKubelet is unhealthy! Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:05.302107123Z" level=error msg="Force shutdown daemon" Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:17.997217 30078 helpers.go:101] Unable to get network stats from pid 27012: couldn't read network stats: failure opening /proc/27012/net/d Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:18.134978 30078 helpers.go:101] Unable to get network stats from pid 26236: couldn't read network stats: failure opening /proc/26236/net/d Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:18.135389 30078 helpers.go:101] Unable to get network stats from pid 27581: couldn't read network stats: failure opening /proc/27581/net/d Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:18.135801 30078 helpers.go:101] Unable to get network stats from pid 27581: couldn't read network stats: failure opening /proc/27581/net/d Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: W0310 06:53:18.430715 30078 prober.go:98] No ref for container "docker://4a90f704319f64738915bc353515403263a60ad04d5859174b50bb47c255db12" (social-syn Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:18.430740 30078 prober.go:106] Liveness probe for "social-sync-deployment-2745944389-rftmf_on-deploy-dev(80a79ba8-04b6-11e7-be05-42010 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: W0310 06:53:18.431064 30078 prober.go:98] No ref for container "docker://964f8ef2da5de63196f5ddfaec156f6b93fb05671be3dd7f2d90e4efb91cbd34" (heapster-v Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:18.431076 30078 prober.go:106] Liveness probe for "heapster-v1.2.0.1-1382115970-l9h4q_kube-system(7f0f2677-04b6-11e7-be05-42010af00129):he Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 health-monitor.sh[1432]: % Total % Received % Xferd Average Speed Time Time Time Current Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 health-monitor.sh[1432]: Dload Upload Total Spent Left Speed Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:12Z" level=info msg="stopping containerd after receiving terminated" Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: W0310 06:53:18.525414 30078 prober.go:98] No ref for container "docker://6fa84a9c20b7c8600048a98d06974817e85652b3b66b8c64d6390735de5bbf19" (kube-dns-4 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:18.525458 30078 prober.go:106] Readiness probe for "kube-dns-4101612645-bkt6z_kube-system(7f12f616-04b6-11e7-be05-42010af00129):kubedns" f Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: E0310 06:53:18.631190 30078 generic.go:197] GenericPLEG: Unable to retrieve pods: operation timeout: context deadline exceeded Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: E0310 06:53:18.646004 30078 container_manager_linux.go:625] error opening pid file /var/run/docker.pid: open /var/run/docker.pid: no such file or dire Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: E0310 06:53:18.893042 30078 kubelet_pods.go:710] Error listing containers: dockertools.operationTimeout{err:context.deadlineExceededError{}} Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: E0310 06:53:18.893091 30078 kubelet.go:1860] Failed cleaning pods: operation timeout: context deadline exceeded Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:18.947556 30078 logs.go:41] http: TLS handshake error from 127.0.0.1:39224: EOF Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: W0310 06:53:18.990182 30078 prober.go:98] No ref for container "docker://964f8ef2da5de63196f5ddfaec156f6b93fb05671be3dd7f2d90e4efb91cbd34" (heapster-v Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:18.990207 30078 prober.go:106] Liveness probe for "heapster-v1.2.0.1-1382115970-l9h4q_kube-system(7f0f2677-04b6-11e7-be05-42010af00129):he Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: W0310 06:53:18.990268 30078 prober.go:98] No ref for container "docker://4a90f704319f64738915bc353515403263a60ad04d5859174b50bb47c255db12" (social-syn Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 health-monitor.sh[1432]: [1.9K blob data] Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.043529322Z" level=error msg="Stop container error: Stop container d0c295d50409a171745524d6171a845fc3d29fd6db26da3fc883653fce1e4 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.077975854Z" level=error msg="Stop container error: Stop container 4712afe5f084cf3163bef94ac21e3d63a5179190e73a8a0fa906a59630b80 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.078034531Z" level=error msg="Stop container error: Stop container 1b18343beedfbe58403017fa532b85604c7ec2c96f15bd503747c19ac37f6 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.078074791Z" level=error msg="Stop container error: Stop container 1fb54295ff5ecc734bf12c576880131cb98011cb98e37b5fa982bdd257b69 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.078113450Z" level=error msg="Stop container error: Stop container b8e52eafa29a8b02263894b3d0d1371a92f1656fea981a6b9842c42b5d939 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.078150890Z" level=error msg="Stop container error: Stop container 9b9021078f15bc3ea03770c0c135e978326f8e279e60e9663885218070026 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:18.990280 30078 prober.go:106] Liveness probe for "social-sync-deployment-2745944389-rftmf_on-deploy-dev(80a79ba8-04b6-11e7-be05-42010 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: E0310 06:53:19.219709 30078 eviction_manager.go:204] eviction manager: unexpected err: failed ImageStats: failed to list docker images - operation tim Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:19.285843 30078 logs.go:41] http: TLS handshake error from 127.0.0.1:39414: write tcp 127.0.0.1:10250->127.0.0.1:39414: write: broken pipe Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:19.400005 30078 kubelet.go:1725] skipping pod synchronization - [container runtime is down] Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: W0310 06:53:19.400065 30078 prober.go:98] No ref for container "docker://6d63f67520d9b76446a00e1f6d81422f12f2fa93a1a9f85a656c0b49e457ba0c" (social-acc Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:19.400079 30078 prober.go:106] Liveness probe for "social-accounts-deployment-983093656-h9frj_on-deploy-dev(8071bfd6-04b6-11e7-be05-42 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: W0310 06:53:19.400318 30078 prober.go:98] No ref for container "docker://963021c2befd5e53a61c16ba2f7c97446b4c045bbf92f723e3b899c4fb2cde21" (post-metri Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:19.400333 30078 prober.go:106] Liveness probe for "post-metrics-deployment-556584274-z3p67_on-deploy-dev(7f9d4125-04b6-11e7-be05-42010 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: W0310 06:53:19.400476 30078 prober.go:98] No ref for container "docker://dc65f853b22eb25bdfaf1ce5bf1d0d6f48e57379caffa526f80a71b086d5247f" (notificati Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 health-monitor.sh[1432]: [1.9K blob data] Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.078188154Z" level=error msg="Stop container error: Stop container 8ee3de7c4dd56136b8c8a444f9b58316d190d2dad496472e233f23bf27596 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.078226785Z" level=error msg="Stop container error: Stop container a9fefcd23efb7f6472b209d6e383b8050da054c3f4b1ad2c6bf531f3b1475 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.078276076Z" level=error msg="Stop container error: Stop container 874fdb93aafc0a13bcbeada66f8f031cd52c01f0cec59913a49bf93917ce5 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.565783448Z" level=error msg="Stop container error: Stop container 42b9b796470a3a0a345229227cb7fa223967c56ce3b8e2765c3d9a48e963c Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.565846865Z" level=error msg="Stop container error: Stop container add6806333a7185aa4944b9bde0c9b2be973a09e59d2b80c09e98e549b180 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 docker[24076]: time="2017-03-10T06:53:13.565886676Z" level=error msg="Stop container error: Stop container 5631ba532f8b2a4ac262b97fabd2df07a8fe6b0202879e1347a763a5a8921 Mar 10 06:53:29 gke-microservices-g1-small-25eedb64-s0p6 kubelet[30078]: I0310 06:53:19.400485 30078 prober.go:106] Liveness probe for "notifications-deployment-3662335406-r668m_on-deploy-dev(880c38dc-0425-11e7-be05-420

At every time, when it trying to update a ChromeOS, it starts to occurs docker daemon issues, networking issues etc.

kube-proxy.log

I0310 06:53:17.392671 5 proxier.go:750] Deleting connection tracking state for service IP 10.3.240.10, endpoint IP 10.0.5.223 Flag --resource-container has been deprecated, This feature will be removed in a later releas e. I0310 06:54:12.615435 5 iptables.go:176] Could not connect to D-Bus system bus: dial un ix /var/run/dbus/system_bus_socket: connect: no such file or directory I0310 06:54:12.615488 5 server.go:168] setting OOM scores is unsupported in this build I0310 06:54:12.687932 5 server.go:215] Using iptables Proxier. I0310 06:54:12.690596 5 server.go:227] Tearing down userspace rules. I0310 06:54:12.690844 5 healthcheck.go:119] Initializing kube-proxy health checker I0310 06:54:12.702034 5 conntrack.go:81] Set sysctl 'net/netfilter/nf_conntrack_max' to 131072 I0310 06:54:12.702366 5 conntrack.go:66] Setting conntrack hashsize to 32768 I0310 06:54:12.702927 5 conntrack.go:81] Set sysctl 'net/netfilter/nf_conntrack_tcp_tim eout_established' to 86400 I0310 06:54:12.702951 5 conntrack.go:81] Set sysctl 'net/netfilter/nf_conntrack_tcp_tim eout_close_wait' to 3600 I0310 06:54:12.714134 5 proxier.go:802] Not syncing iptables until Services and Endpoin ts have been received from master

More logs:

g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:45.445978 3344 docker_manager.go:1975] Need to restart pod infra container for "roles-deployment-1745993421-qxf7z_on-a Mar 10 06:50:45 gke-microservices-g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:45.574227 3344 operation_executor.go:917] MountVolume.SetUp succeeded for volume "kubernetes.io/secret/e257aff1-055d-1 Mar 10 06:50:45 gke-microservices-g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:45.575943 3344 docker_manager.go:1975] Need to restart pod infra container for "social-accounts-deployment-983093656-v Mar 10 06:50:45 gke-microservices-g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:45.774316 3344 operation_executor.go:917] MountVolume.SetUp succeeded for volume "kubernetes.io/secret/e2762a4c-055d-1 Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:46.056277 3344 docker_manager.go:1975] Need to restart pod infra container for "tags-srv-deployment-626769860-js4h5_on Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-udevd[6680]: Could not generate persistent MAC address for veth37abc82a: No such file or directory Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: device veth37abc82a entered promiscuous mode Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 3(veth37abc82a) entered forwarding state Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 3(veth37abc82a) entered forwarding state Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-networkd[611]: veth37abc82a: Gained carrier Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:46.626937 3344 conversion.go:134] failed to handle multiple devices for container. Skipping Filesystem stats Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:46.627371 3344 conversion.go:134] failed to handle multiple devices for container. Skipping Filesystem stats Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-udevd[6745]: Could not generate persistent MAC address for veth07d02159: No such file or directory Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-networkd[611]: veth07d02159: Gained carrier Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: device veth07d02159 entered promiscuous mode Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 12(veth07d02159) entered forwarding state Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 12(veth07d02159) entered forwarding state Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-udevd[6771]: Could not generate persistent MAC address for veth2b02253d: No such file or directory Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-networkd[611]: veth2b02253d: Gained carrier Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: device veth2b02253d entered promiscuous mode Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 23(veth2b02253d) entered forwarding state Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 23(veth2b02253d) entered forwarding state Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-udevd[6796]: Could not generate persistent MAC address for veth55143c6b: No such file or directory Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-networkd[611]: veth55143c6b: Gained carrier Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: device veth55143c6b entered promiscuous mode Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 30(veth55143c6b) entered forwarding state Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 30(veth55143c6b) entered forwarding state Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-udevd[6821]: Could not generate persistent MAC address for vethe38b8eee: No such file or directory Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:46 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 systemd-networkd[611]: vethe38b8eee: Gained carrier Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 kernel: device vethe38b8eee entered promiscuous mode Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 31(vethe38b8eee) entered forwarding state Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 kernel: cbr0: port 31(vethe38b8eee) entered forwarding state Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:47.113442 3344 docker_manager.go:2236] Determined pod ip after infra change: "roles-deployment-1745993421-qxf7z Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:47.115417 3344 kubelet.go:1816] SyncLoop (PLEG): "social-accounts-deployment-983093656-vh2xt-deploy-dev(e257aff Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 docker[3264]: time="2017-03-10T06:50:47.118506356Z" level=error msg="Handler for GET /v1.23/images/b.gcr.io-container-registry/microservice Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 kubelet[3344]: I0310 06:50:47.194220 3344 provider.go:119] Refreshing cache for provider: *gcp_credentials.dockerConfigKeyProvider Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 systemd-udevd[6847]: Could not generate persistent MAC address for veth2228e3ba: No such file or directory Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254). Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Network configuration changed, trying to establish connection. Mar 10 06:50:47 gke-microservices-g1-small-25eedb64-w265 systemd-timesyncd[570]: Synchronized to time server 169.254.169.254:123 (169.254.169.254).

Question: This is possible to avoid/reduce amount of restarts and solve networking issues to make our system more stable?