| commit | author | age | ||
| b4d6ba | 1 | |
| OB | 2 | * ISO/OSI Reference Model |
| 3 | ||
| 4 | 7 Application Layer | mysql-client ^ | |
| 5 | 6 Presentation Layer | | | |
| 6 | 5 Session Layer | | | |
| 7 | 4 Transport Layer | TCP 3306 | | |
| 8 | 3 Network Layer | IP 10.88.0.74 | | |
| 9 | 2 Datalink Layer | ETH 0:14:4f:c9:85:70 | | |
| 10 | 1 Physical Layer v Copper/Fibre | | |
| 11 | ||
| 12 | ||
| 13 | ||
| 14 | * Container components | |
| 15 | ||
| 16 | #+begin_src ditaa :file processlist-containers.png :cmdline -E -s 0.8 | |
| 17 | ||
| 18 | | | |
| 19 | +- 1 systemd | |
| 20 | | | |
| 21 | +- 42 bash | |
| 22 | | | |
| 23 | +- 23 vim | |
| 24 | | | |
| 25 | |---------------+ namespace, chroot, SELinux, cgroups, Seccomp | |
| 26 | +- 53 mysql5.5 | | |
| 27 | |---------------+ | |
| 28 | |---------------+ namespace, chroot, SELinux, cgroups, Seccomp | |
| 29 | +- 53 mysql5.8 | | |
| 30 | |---------------+ | |
| 31 | |------------+ namespace, chroot, SELinux, cgroups, Seccomp | |
| 32 | +- 74 apache | | |
| 33 | |------------+ | |
| 34 | | | |
| 35 | +- 122 bash | |
| 36 | ||
| 37 | ||
| 38 | #+end_src | |
| 39 | ||
| 40 | * UNIX Memory Seperation | |
| 41 | ||
| 42 | #+begin_src ditaa :file userland.png :cmdline -E -s 0.8 | |
| 43 | ||
| 44 | +---------------------------------+ Process | |
| 45 | Userland | Proc1, Proc2, ... | | | |
| 46 | | | v | |
| 47 | | | System Call | |
| 48 | +-----SystemCalls-----------------+ | | |
| 49 | +---------------------------------+ v | |
| 50 | Kernel | Device Driver, Scheduler, | Kernel Driver | |
| 51 | Space | Memory Management, ... | | |
| 52 | +---------------------------------+ | |
| 53 | #+end_src | |
| 54 | ||
| 55 | * docker vs podman components | |
| 56 | ||
| 57 | (root) | |
| 58 | docker-cli ---REST (HTTP)---> docker-daemon ----> container | |
| 59 | [webserver] | |
| 60 | ||
| 61 | (root) | |
| 62 | podman -> CRI-O -> runC -> container | |
| 63 | (Container Runtime Interface - OCI (Open Container Intiative)) | |
| 64 | ||
| 65 | alias docker=podman | |
| 66 | ||
| 67 | ||
| 68 | ||
| 69 | * oc command line tool parameter | |
| 70 | ||
| 71 | oc is a modified kubectl, but full compatible | |
| 72 | ||
| 73 | | Command | SubCommand | Resource Type | [<Resource Name>] | | |
| 74 | |---------+-------------+----------------------------+-------------------| | |
| 75 | | oc | get | pod | [name] | | |
| 76 | | kubectl | describe | svc / service | | | |
| 77 | | | edit | all | | | |
| 78 | | | get -o yaml | replicationcontroller / rc | | | |
| 79 | | | get -o json | deploymentconfig / dc | | | |
| 80 | | | delete | buildconfig / bc | | | |
| 81 | | | create | imagestream / is | | | |
| 82 | | | | NetworkPolicy | | | |
| 83 | ||
| 84 | # oc new-project | |
| 85 | # oc new-app | |
| 86 | # oc rsh <podname> | |
| 87 | ||
| 88 | ||
| 89 | * UNIX Kernel Memory | |
| 90 | ||
| 91 | #+begin_src ditaa :file system_memory.png :cmdline -E -s 0.8 | |
| 92 | ||
| 93 | +--------------------------------+ | |
| 94 | |0Heap | | |
| 95 | | | | |
| 96 | | | | |
| 97 | | | | |
| 98 | | | | |
| 99 | | | | |
| 100 | +--------------------------------+ | |
| 101 | Gap | |
| 102 | +--------------------------------+ | |
| 103 | | | | |
| 104 | | | | |
| 105 | | | | |
| 106 | |Stack 2^64| | |
| 107 | +--------------------------------+ | |
| 108 | ||
| 109 | #+end_src | |
