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Diffstat (limited to 'packer/provision/docker.sh')
| -rw-r--r-- | packer/provision/docker.sh | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/packer/provision/docker.sh b/packer/provision/docker.sh index 125cbd4c2..12ebfc045 100644 --- a/packer/provision/docker.sh +++ b/packer/provision/docker.sh @@ -29,6 +29,47 @@ EOL groupadd docker } +ubuntu_docker_mtu_fix(){ + echo "---> Fixing docker's mtu settings" + systemctl stop docker + cat <<EOL > /etc/systemd/system/docker.service +[Unit] +Description=Docker Application Container Engine +Documentation=https://docs.docker.com +After=network.target docker.socket +Requires=docker.socket + +[Service] +Type=notify +# the default is not to use systemd for cgroups because the delegate issues still +# exists and systemd currently does not support the cgroup feature set required +# for containers run by docker +ExecStart= +ExecStart=/usr/bin/dockerd --mtu 1454 -H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock +ExecReload=/bin/kill -s HUP $MAINPID +# Having non-zero Limit*s causes performance problems due to accounting overhead +# in the kernel. We recommend using cgroups to do container-local accounting. +LimitNOFILE=infinity +LimitNPROC=infinity +LimitCORE=infinity +# Uncomment TasksMax if your systemd version supports it. +# Only systemd 226 and above support this version. +TasksMax=infinity +TimeoutStartSec=0 +# set delegate yes so that systemd does not reset the cgroups of docker containers +Delegate=yes +# kill only the docker process, not all processes in the cgroup +KillMode=process + +[Install] +WantedBy=multi-user.target +EOL + systemctl start docker + echo "---> Checking MTU" + docker network inspect bridge + echo "---> MTU set to 1454" +} + ubuntu_systems() { # Assumes that python is already installed by basebuild @@ -45,6 +86,9 @@ ubuntu_systems() { # Install docker apt install -y docker.io + + # Fixing Docker MTU settings + ubuntu_docker_mtu_fix } all_systems() { |