This Blog is about the installation of Rancher Community on a RHEL 8 compatible Linux, for this Blog i choose AlmaLinux 8.4, but i will also work on Rocky Linux 8.4 Release Candidate.
Base is an AlmaLinux / Rocky Linux minimal installation on a VMWare Host for all nodes, using the same configuration with 4vCPU and 4GB RAM.
A small comaprsion of RHEL 8 and the alternatives can be found in my other blog her:
CentOS 8 binary compatible alternatives
Rancher is doing everything out of running conatainers, so the control node itself is a running container using Docker as base.
So we need to install Docker on our minimal Linux system.
Add Docker Repository
$ [[[email protected] ~]$ dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo $ [[[email protected] ~]$
Install Docker
$ [[[email protected] ~]$ dnf install --nobest docker-ce -y Docker CE Stable - x86_64 46 kB/s | 14 kB 00:00 Dependencies resolved. ========================================================================================================================================================================================================================================================================================== Package Architecture Version Repository Size ========================================================================================================================================================================================================================================================================================== Installing: docker-ce x86_64 3:20.10.7-3.el8 docker-ce-stable 27 M Installing dependencies: checkpolicy x86_64 2.9-1.el8 baseos 347 k container-selinux noarch 2:2.158.0-1.module_el8.4.0+2332+f4da7515 appstream 50 k containerd.io x86_64 1.4.6-3.1.el8 docker-ce-stable 34 M docker-ce-cli x86_64 1:20.10.7-3.el8 docker-ce-stable 33 M docker-ce-rootless-extras x86_64 20.10.7-3.el8 docker-ce-stable 9.2 M docker-scan-plugin x86_64 0.8.0-3.el8 docker-ce-stable 4.2 M fuse-overlayfs x86_64 1.4.0-2.module_el8.4.0+2332+f4da7515 appstream 71 k fuse3 x86_64 3.2.1-12.el8 baseos 50 k fuse3-libs x86_64 3.2.1-12.el8 baseos 94 k libcgroup x86_64 0.41-19.el8 baseos 69 k libslirp x86_64 4.3.1-1.module_el8.4.0+2332+f4da7515 appstream 68 k policycoreutils-python-utils noarch 2.9-14.el8 baseos 251 k python3-audit x86_64 3.0-0.17.20191104git1c2f876.el8 baseos 86 k python3-libsemanage x86_64 2.9-6.el8 baseos 126 k python3-policycoreutils noarch 2.9-14.el8 baseos 2.2 M python3-setools x86_64 4.3.0-2.el8 baseos 625 k slirp4netns x86_64 1.1.8-1.module_el8.4.0+2332+f4da7515 appstream 50 k Enabling module streams: container-tools rhel8 Transaction Summary ========================================================================================================================================================================================================================================================================================== Install 18 Packages Total download size: 111 M Installed size: 449 M Downloading Packages: (1/18): fuse3-libs-3.2.1-12.el8.x86_64.rpm 416 kB/s | 94 kB 00:00 (2/18): fuse3-3.2.1-12.el8.x86_64.rpm 217 kB/s | 50 kB 00:00 (3/18): libcgroup-0.41-19.el8.x86_64.rpm 2.4 MB/s | 69 kB 00:00 (4/18): checkpolicy-2.9-1.el8.x86_64.rpm 1.2 MB/s | 347 kB 00:00 (5/18): python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_64.rpm 3.7 MB/s | 86 kB 00:00 (6/18): policycoreutils-python-utils-2.9-14.el8.noarch.rpm 3.8 MB/s | 251 kB 00:00 (7/18): python3-libsemanage-2.9-6.el8.x86_64.rpm 4.5 MB/s | 126 kB 00:00 (8/18): container-selinux-2.158.0-1.module_el8.4.0+2332+f4da7515.noarch.rpm 2.0 MB/s | 50 kB 00:00 (9/18): fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64.rpm 3.1 MB/s | 71 kB 00:00 (10/18): libslirp-4.3.1-1.module_el8.4.0+2332+f4da7515.x86_64.rpm 3.2 MB/s | 68 kB 00:00 (11/18): python3-setools-4.3.0-2.el8.x86_64.rpm 6.3 MB/s | 625 kB 00:00 (12/18): slirp4netns-1.1.8-1.module_el8.4.0+2332+f4da7515.x86_64.rpm 1.9 MB/s | 50 kB 00:00 (13/18): python3-policycoreutils-2.9-14.el8.noarch.rpm 8.6 MB/s | 2.2 MB 00:00 (14/18): docker-ce-20.10.7-3.el8.x86_64.rpm 17 MB/s | 27 MB 00:01 (15/18): containerd.io-1.4.6-3.1.el8.x86_64.rpm 17 MB/s | 34 MB 00:01 (16/18): docker-ce-cli-20.10.7-3.el8.x86_64.rpm 16 MB/s | 33 MB 00:02 (17/18): docker-ce-rootless-extras-20.10.7-3.el8.x86_64.rpm 13 MB/s | 9.2 MB 00:00 (18/18): docker-scan-plugin-0.8.0-3.el8.x86_64.rpm 15 MB/s | 4.2 MB 00:00 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Total 36 MB/s | 111 MB 00:03 warning: /var/cache/dnf/docker-ce-stable-fa9dc42ab4cec2f4/packages/containerd.io-1.4.6-3.1.el8.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY Docker CE Stable - x86_64 24 kB/s | 1.6 kB 00:00 Importing GPG key 0x621E9F35: Userid : "Docker Release (CE rpm) " Fingerprint: 060A 61C5 1B55 8A7F 742B 77AA C52F EB6B 621E 9F35 From : https://download.docker.com/linux/centos/gpg Key imported successfully Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : docker-scan-plugin-0.8.0-3.el8.x86_64 1/18 Running scriptlet: docker-scan-plugin-0.8.0-3.el8.x86_64 1/18 Installing : docker-ce-cli-1:20.10.7-3.el8.x86_64 2/18 Running scriptlet: docker-ce-cli-1:20.10.7-3.el8.x86_64 2/18 Installing : libslirp-4.3.1-1.module_el8.4.0+2332+f4da7515.x86_64 3/18 Installing : slirp4netns-1.1.8-1.module_el8.4.0+2332+f4da7515.x86_64 4/18 Installing : python3-setools-4.3.0-2.el8.x86_64 5/18 Installing : python3-libsemanage-2.9-6.el8.x86_64 6/18 Installing : python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_64 7/18 Running scriptlet: libcgroup-0.41-19.el8.x86_64 8/18 Installing : libcgroup-0.41-19.el8.x86_64 8/18 Running scriptlet: libcgroup-0.41-19.el8.x86_64 8/18 Installing : fuse3-libs-3.2.1-12.el8.x86_64 9/18 Running scriptlet: fuse3-libs-3.2.1-12.el8.x86_64 9/18 Installing : fuse3-3.2.1-12.el8.x86_64 10/18 Installing : fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64 11/18 Running scriptlet: fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64 11/18 Installing : checkpolicy-2.9-1.el8.x86_64 12/18 Installing : python3-policycoreutils-2.9-14.el8.noarch 13/18 Installing : policycoreutils-python-utils-2.9-14.el8.noarch 14/18 Running scriptlet: container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 15/18 Installing : container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 15/18 Running scriptlet: container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 15/18 Installing : containerd.io-1.4.6-3.1.el8.x86_64 16/18 Running scriptlet: containerd.io-1.4.6-3.1.el8.x86_64 16/18 Installing : docker-ce-rootless-extras-20.10.7-3.el8.x86_64 17/18 Running scriptlet: docker-ce-rootless-extras-20.10.7-3.el8.x86_64 17/18 Installing : docker-ce-3:20.10.7-3.el8.x86_64 18/18 Running scriptlet: docker-ce-3:20.10.7-3.el8.x86_64 18/18 Running scriptlet: container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 18/18 Running scriptlet: docker-ce-3:20.10.7-3.el8.x86_64 18/18 Verifying : checkpolicy-2.9-1.el8.x86_64 1/18 Verifying : fuse3-3.2.1-12.el8.x86_64 2/18 Verifying : fuse3-libs-3.2.1-12.el8.x86_64 3/18 Verifying : libcgroup-0.41-19.el8.x86_64 4/18 Verifying : policycoreutils-python-utils-2.9-14.el8.noarch 5/18 Verifying : python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_64 6/18 Verifying : python3-libsemanage-2.9-6.el8.x86_64 7/18 Verifying : python3-policycoreutils-2.9-14.el8.noarch 8/18 Verifying : python3-setools-4.3.0-2.el8.x86_64 9/18 Verifying : container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 10/18 Verifying : fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64 11/18 Verifying : libslirp-4.3.1-1.module_el8.4.0+2332+f4da7515.x86_64 12/18 Verifying : slirp4netns-1.1.8-1.module_el8.4.0+2332+f4da7515.x86_64 13/18 Verifying : containerd.io-1.4.6-3.1.el8.x86_64 14/18 Verifying : docker-ce-3:20.10.7-3.el8.x86_64 15/18 Verifying : docker-ce-cli-1:20.10.7-3.el8.x86_64 16/18 Verifying : docker-ce-rootless-extras-20.10.7-3.el8.x86_64 17/18 Verifying : docker-scan-plugin-0.8.0-3.el8.x86_64 18/18 Installed: checkpolicy-2.9-1.el8.x86_64 container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch containerd.io-1.4.6-3.1.el8.x86_64 docker-ce-3:20.10.7-3.el8.x86_64 docker-ce-cli-1:20.10.7-3.el8.x86_64 docker-ce-rootless-extras-20.10.7-3.el8.x86_64 docker-scan-plugin-0.8.0-3.el8.x86_64 fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64 fuse3-3.2.1-12.el8.x86_64 fuse3-libs-3.2.1-12.el8.x86_64 libcgroup-0.41-19.el8.x86_64 libslirp-4.3.1-1.module_el8.4.0+2332+f4da7515.x86_64 policycoreutils-python-utils-2.9-14.el8.noarch python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_64 python3-libsemanage-2.9-6.el8.x86_64 python3-policycoreutils-2.9-14.el8.noarch python3-setools-4.3.0-2.el8.x86_64 slirp4netns-1.1.8-1.module_el8.4.0+2332+f4da7515.x86_64 Complete! $ [[[email protected] ~]$
Start and enable Docker
$ [[[email protected] ~]$ systemctl daemon-reload $ [[[email protected] ~]$ systemctl start docker $ [[[email protected] ~]$ systemctl enable docker $ [[[email protected] ~]$ Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service. $ [[[email protected] ~]$
Now Docker is installed, up and running and configured to start automatically on boot.
Installing the Rachner Control Container using port 8080 for the webfrontend
$ [[[email protected] ~]$ docker run -d --restart=unless-stopped -p 8080:8080 rancher/server:stable $ [[[email protected] ~]$ Unable to find image 'rancher/server:stable' locally $ [[[email protected] ~]$ stable: Pulling from rancher/server $ [[[email protected] ~]$ bae382666908: Pull complete $ [[[email protected] ~]$ 29ede3c02ff2: Pull complete $ [[[email protected] ~]$ da4e69f33106: Pull complete $ [[[email protected] ~]$ 8d43e5f5d27f: Pull complete $ [[[email protected] ~]$ b0de1abb17d6: Pull complete $ [[[email protected] ~]$ 422f47db4517: Pull complete $ [[[email protected] ~]$ 79d37de643ce: Pull complete $ [[[email protected] ~]$ 69d13e08a4fe: Pull complete $ [[[email protected] ~]$ 2ddfd3c6a2b7: Pull complete $ [[[email protected] ~]$ bc433fed3823: Pull complete $ [[[email protected] ~]$ b82e188df556: Pull complete $ [[[email protected] ~]$ dae2802428a4: Pull complete $ [[[email protected] ~]$ 07bf18e8eec0: Pull complete $ [[[email protected] ~]$ 339e24088f91: Pull complete $ [[[email protected] ~]$ 9372455de0b8: Pull complete $ [[[email protected] ~]$ 5a33b348bf45: Pull complete $ [[[email protected] ~]$ 3286997d8874: Pull complete $ [[[email protected] ~]$ bd79bfb954de: Pull complete $ [[[email protected] ~]$ ba7c19991a31: Pull complete $ [[[email protected] ~]$ 0c19aca4f8a1: Pull complete $ [[[email protected] ~]$ e03fc76c8997: Pull complete $ [[[email protected] ~]$ Digest: sha256:95b55603122c28baea4e8d94663aa34ad770bbc624a9ed6ef986fb3ea5224d91 $ [[[email protected] ~]$ Status: Downloaded newer image for rancher/server:stable $ [[[email protected] ~]$ b3db9a254b284f8f3f048bea8d68a0efd3786dd77d35d4fd0245199b179339fa $ [[[email protected] ~]$
Check status
$ [[[email protected] ~]$ docker ps -a $ [[[email protected] ~]$ CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES $ [[[email protected] ~]$ b3db9a254b28 rancher/server:stable "/usr/bin/entry /usr…" 16 seconds ago Up 14 seconds 3306/tcp, 0.0.0.0:8080->8080/tcp, :::8080->8080/tcp flamboyant_lehmann $ [[[email protected] ~]$
Now the Rancher control container is up and running.
No installing the worker nodes, this is also an eaysy step, the Docker installation is the same like we did for the control node.
Add Docker Repository
$ [[[email protected]~]$ dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo $ [[[email protected]~]$
Install Docker
$ [[[email protected] ~]$ dnf install --nobest docker-ce -y Docker CE Stable - x86_64 46 kB/s | 14 kB 00:00 Dependencies resolved. ========================================================================================================================================================================================================================================================================================== Package Architecture Version Repository Size ========================================================================================================================================================================================================================================================================================== Installing: docker-ce x86_64 3:20.10.7-3.el8 docker-ce-stable 27 M Installing dependencies: checkpolicy x86_64 2.9-1.el8 baseos 347 k container-selinux noarch 2:2.158.0-1.module_el8.4.0+2332+f4da7515 appstream 50 k containerd.io x86_64 1.4.6-3.1.el8 docker-ce-stable 34 M docker-ce-cli x86_64 1:20.10.7-3.el8 docker-ce-stable 33 M docker-ce-rootless-extras x86_64 20.10.7-3.el8 docker-ce-stable 9.2 M docker-scan-plugin x86_64 0.8.0-3.el8 docker-ce-stable 4.2 M fuse-overlayfs x86_64 1.4.0-2.module_el8.4.0+2332+f4da7515 appstream 71 k fuse3 x86_64 3.2.1-12.el8 baseos 50 k fuse3-libs x86_64 3.2.1-12.el8 baseos 94 k libcgroup x86_64 0.41-19.el8 baseos 69 k libslirp x86_64 4.3.1-1.module_el8.4.0+2332+f4da7515 appstream 68 k policycoreutils-python-utils noarch 2.9-14.el8 baseos 251 k python3-audit x86_64 3.0-0.17.20191104git1c2f876.el8 baseos 86 k python3-libsemanage x86_64 2.9-6.el8 baseos 126 k python3-policycoreutils noarch 2.9-14.el8 baseos 2.2 M python3-setools x86_64 4.3.0-2.el8 baseos 625 k slirp4netns x86_64 1.1.8-1.module_el8.4.0+2332+f4da7515 appstream 50 k Enabling module streams: container-tools rhel8 Transaction Summary ========================================================================================================================================================================================================================================================================================== Install 18 Packages Total download size: 111 M Installed size: 449 M Downloading Packages: (1/18): fuse3-libs-3.2.1-12.el8.x86_64.rpm 416 kB/s | 94 kB 00:00 (2/18): fuse3-3.2.1-12.el8.x86_64.rpm 217 kB/s | 50 kB 00:00 (3/18): libcgroup-0.41-19.el8.x86_64.rpm 2.4 MB/s | 69 kB 00:00 (4/18): checkpolicy-2.9-1.el8.x86_64.rpm 1.2 MB/s | 347 kB 00:00 (5/18): python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_64.rpm 3.7 MB/s | 86 kB 00:00 (6/18): policycoreutils-python-utils-2.9-14.el8.noarch.rpm 3.8 MB/s | 251 kB 00:00 (7/18): python3-libsemanage-2.9-6.el8.x86_64.rpm 4.5 MB/s | 126 kB 00:00 (8/18): container-selinux-2.158.0-1.module_el8.4.0+2332+f4da7515.noarch.rpm 2.0 MB/s | 50 kB 00:00 (9/18): fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64.rpm 3.1 MB/s | 71 kB 00:00 (10/18): libslirp-4.3.1-1.module_el8.4.0+2332+f4da7515.x86_64.rpm 3.2 MB/s | 68 kB 00:00 (11/18): python3-setools-4.3.0-2.el8.x86_64.rpm 6.3 MB/s | 625 kB 00:00 (12/18): slirp4netns-1.1.8-1.module_el8.4.0+2332+f4da7515.x86_64.rpm 1.9 MB/s | 50 kB 00:00 (13/18): python3-policycoreutils-2.9-14.el8.noarch.rpm 8.6 MB/s | 2.2 MB 00:00 (14/18): docker-ce-20.10.7-3.el8.x86_64.rpm 17 MB/s | 27 MB 00:01 (15/18): containerd.io-1.4.6-3.1.el8.x86_64.rpm 17 MB/s | 34 MB 00:01 (16/18): docker-ce-cli-20.10.7-3.el8.x86_64.rpm 16 MB/s | 33 MB 00:02 (17/18): docker-ce-rootless-extras-20.10.7-3.el8.x86_64.rpm 13 MB/s | 9.2 MB 00:00 (18/18): docker-scan-plugin-0.8.0-3.el8.x86_64.rpm 15 MB/s | 4.2 MB 00:00 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Total 36 MB/s | 111 MB 00:03 warning: /var/cache/dnf/docker-ce-stable-fa9dc42ab4cec2f4/packages/containerd.io-1.4.6-3.1.el8.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY Docker CE Stable - x86_64 24 kB/s | 1.6 kB 00:00 Importing GPG key 0x621E9F35: Userid : "Docker Release (CE rpm) " Fingerprint: 060A 61C5 1B55 8A7F 742B 77AA C52F EB6B 621E 9F35 From : https://download.docker.com/linux/centos/gpg Key imported successfully Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : docker-scan-plugin-0.8.0-3.el8.x86_64 1/18 Running scriptlet: docker-scan-plugin-0.8.0-3.el8.x86_64 1/18 Installing : docker-ce-cli-1:20.10.7-3.el8.x86_64 2/18 Running scriptlet: docker-ce-cli-1:20.10.7-3.el8.x86_64 2/18 Installing : libslirp-4.3.1-1.module_el8.4.0+2332+f4da7515.x86_64 3/18 Installing : slirp4netns-1.1.8-1.module_el8.4.0+2332+f4da7515.x86_64 4/18 Installing : python3-setools-4.3.0-2.el8.x86_64 5/18 Installing : python3-libsemanage-2.9-6.el8.x86_64 6/18 Installing : python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_64 7/18 Running scriptlet: libcgroup-0.41-19.el8.x86_64 8/18 Installing : libcgroup-0.41-19.el8.x86_64 8/18 Running scriptlet: libcgroup-0.41-19.el8.x86_64 8/18 Installing : fuse3-libs-3.2.1-12.el8.x86_64 9/18 Running scriptlet: fuse3-libs-3.2.1-12.el8.x86_64 9/18 Installing : fuse3-3.2.1-12.el8.x86_64 10/18 Installing : fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64 11/18 Running scriptlet: fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64 11/18 Installing : checkpolicy-2.9-1.el8.x86_64 12/18 Installing : python3-policycoreutils-2.9-14.el8.noarch 13/18 Installing : policycoreutils-python-utils-2.9-14.el8.noarch 14/18 Running scriptlet: container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 15/18 Installing : container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 15/18 Running scriptlet: container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 15/18 Installing : containerd.io-1.4.6-3.1.el8.x86_64 16/18 Running scriptlet: containerd.io-1.4.6-3.1.el8.x86_64 16/18 Installing : docker-ce-rootless-extras-20.10.7-3.el8.x86_64 17/18 Running scriptlet: docker-ce-rootless-extras-20.10.7-3.el8.x86_64 17/18 Installing : docker-ce-3:20.10.7-3.el8.x86_64 18/18 Running scriptlet: docker-ce-3:20.10.7-3.el8.x86_64 18/18 Running scriptlet: container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 18/18 Running scriptlet: docker-ce-3:20.10.7-3.el8.x86_64 18/18 Verifying : checkpolicy-2.9-1.el8.x86_64 1/18 Verifying : fuse3-3.2.1-12.el8.x86_64 2/18 Verifying : fuse3-libs-3.2.1-12.el8.x86_64 3/18 Verifying : libcgroup-0.41-19.el8.x86_64 4/18 Verifying : policycoreutils-python-utils-2.9-14.el8.noarch 5/18 Verifying : python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_64 6/18 Verifying : python3-libsemanage-2.9-6.el8.x86_64 7/18 Verifying : python3-policycoreutils-2.9-14.el8.noarch 8/18 Verifying : python3-setools-4.3.0-2.el8.x86_64 9/18 Verifying : container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch 10/18 Verifying : fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64 11/18 Verifying : libslirp-4.3.1-1.module_el8.4.0+2332+f4da7515.x86_64 12/18 Verifying : slirp4netns-1.1.8-1.module_el8.4.0+2332+f4da7515.x86_64 13/18 Verifying : containerd.io-1.4.6-3.1.el8.x86_64 14/18 Verifying : docker-ce-3:20.10.7-3.el8.x86_64 15/18 Verifying : docker-ce-cli-1:20.10.7-3.el8.x86_64 16/18 Verifying : docker-ce-rootless-extras-20.10.7-3.el8.x86_64 17/18 Verifying : docker-scan-plugin-0.8.0-3.el8.x86_64 18/18 Installed: checkpolicy-2.9-1.el8.x86_64 container-selinux-2:2.158.0-1.module_el8.4.0+2332+f4da7515.noarch containerd.io-1.4.6-3.1.el8.x86_64 docker-ce-3:20.10.7-3.el8.x86_64 docker-ce-cli-1:20.10.7-3.el8.x86_64 docker-ce-rootless-extras-20.10.7-3.el8.x86_64 docker-scan-plugin-0.8.0-3.el8.x86_64 fuse-overlayfs-1.4.0-2.module_el8.4.0+2332+f4da7515.x86_64 fuse3-3.2.1-12.el8.x86_64 fuse3-libs-3.2.1-12.el8.x86_64 libcgroup-0.41-19.el8.x86_64 libslirp-4.3.1-1.module_el8.4.0+2332+f4da7515.x86_64 policycoreutils-python-utils-2.9-14.el8.noarch python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_64 python3-libsemanage-2.9-6.el8.x86_64 python3-policycoreutils-2.9-14.el8.noarch python3-setools-4.3.0-2.el8.x86_64 slirp4netns-1.1.8-1.module_el8.4.0+2332+f4da7515.x86_64 Complete! $ [[[email protected] ~]$
The worker nodes need two open ports to work proberly, port 500 udp and port 4500 udp.
$ [[[email protected] ~]$ firewall-cmd --zone=public --permanent --add-port 500/udp $ [[[email protected] ~]$ success $ [[[email protected] ~]$[firewall-cmd --zone=public --permanent --add-port 4500/udp $ [[[email protected] ~]$ success $ [[[email protected] ~]$ firewall-cmd --reload $ [[[email protected] ~]$ success $ [[[email protected] ~]$
No it is time to register the worker node, for that go to in the webfrontend from the control node to Infrastructure -> Hosts.
There at first will come a question if the control node is reachable over the url, please accept.
Adding a Host, marked is the url as docker command to tegister a agent / worker node at the control node.
Adding the agent / worker node using the url provide by the control node:
$ [[[email protected] ~]$ docker run --rm --privileged -v /var/run/docker.sock:/var/run/docker.sock -v /var/lib/rancher:/var/lib/rancher rancher/agent:v1.2.11 http://192.168.198.128:8080/v1/scripts/3E86E8E2646B5571AAEE:1609372800000:HQWlTmjzKhd4MGvQP8fs2n7jlZQ $ [[[email protected] ~]$ Unable to find image 'rancher/agent:v1.2.11' locally $ [[[email protected] ~]$ v1.2.11: Pulling from rancher/agent $ [[[email protected] ~]$ b3e1c725a85f: Pull complete $ [[[email protected] ~]$ 6a710864a9fc: Pull complete $ [[[email protected] ~]$ d0ac3b234321: Pull complete $ [[[email protected] ~]$ 87f567b5cf58: Pull complete $ [[[email protected] ~]$ 063e24b217c4: Pull complete $ [[[email protected] ~]$ d0a3f58caef0: Pull complete $ [[[email protected] ~]$ 16914729cfd3: Pull complete $ [[[email protected] ~]$ bbad862633b9: Pull complete $ [[[email protected] ~]$ 3cf9849d7f3c: Pull complete $ [[[email protected] ~]$ Digest: sha256:0fba3fb10108f7821596dc5ad4bfa30e93426d034cd3471f6ccd3afb5f87a963 $ [[[email protected] ~]$ Status: Downloaded newer image for rancher/agent:v1.2.11 $ [[[email protected] ~]$ $ [[[email protected] ~]$ INFO: Running Agent Registration Process, CATTLE_URL=http://192.168.198.128:8080/v1 $ [[[email protected] ~]$ INFO: Attempting to connect to: http://192.168.198.128:8080/v1 $ [[[email protected] ~]$ INFO: http://192.168.198.128:8080/v1 is accessible $ [[[email protected] ~]$ INFO: Configured Host Registration URL info: CATTLE_URL=http://192.168.198.128:8080/v1 ENV_URL=http://192.168.198.128:8080/v1 $ [[[email protected] ~]$ INFO: Inspecting host capabilities $ [[[email protected] ~]$ INFO: Boot2Docker: false $ [[[email protected] ~]$ INFO: Host writable: true $ [[[email protected] ~]$ INFO: Token: xxxxxxxx $ [[[email protected] ~]$ INFO: Running registration $ [[[email protected] ~]$ INFO: Printing Environment $ [[[email protected] ~]$ INFO: ENV: CATTLE_ACCESS_KEY=5E71550625C281E062F5 $ [[[email protected] ~]$ INFO: ENV: CATTLE_HOME=/var/lib/cattle $ [[[email protected] ~]$ INFO: ENV: CATTLE_REGISTRATION_ACCESS_KEY=registrationToken $ [[[email protected] ~]$ INFO: ENV: CATTLE_REGISTRATION_SECRET_KEY=xxxxxxx $ [[[email protected] ~]$ INFO: ENV: CATTLE_SECRET_KEY=xxxxxxx $ [[[email protected] ~]$ INFO: ENV: CATTLE_URL=http://192.168.198.128:8080/v1 $ [[[email protected] ~]$ INFO: ENV: DETECTED_CATTLE_AGENT_IP=192.168.198.129 $ [[[email protected] ~]$ INFO: ENV: RANCHER_AGENT_IMAGE=rancher/agent:v1.2.11 $ [[[email protected] ~]$ INFO: Launched Rancher Agent: 78fba978ef03b9d0604a8bd8ea580a01aa4bb3a0c2cd900d4898d7bc0097c721 $ [[[email protected] ~]$
Waiting a few minutes and the agents are registered:
Running container on a fresh installation:
No it is time to play with containers, this is a good test installation for the first steps using Rancher:
I choose a PostgreSQL container latest PostgreSQL Version:
And a fiew seconds later the containers are up and running:
Load Balancer looks like outdated lets upgrade:
Just click on upgrade, wait a few seconds and everything is up to date, up and running.
Rancher Community is a good choice for starting with container technologies.
