aboutsummaryrefslogtreecommitdiffstats
path: root/docker/docker_remote_api/enable_remote_api.sh
blob: 76e59b8505a152f6a1209ceccd60be4692ea3849 (plain) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

#!/bin/bash
# SPDX-license-identifier: Apache-2.0

# ******************************
# Script to update the docker host configuration
# to enable Docker Remote API
# ******************************

if [ -f /etc/lsb-release ]; then
    #tested on ubuntu 14.04 and 16.04
    if grep -q "#DOCKER_OPTS=" "/etc/default/docker"; then
        cp /etc/default/docker /etc/default/docker.bak
        sed -i 's/^#DOCKER_OPTS.*$/DOCKER_OPTS=\"-H unix:\/\/\/var\/run\/docker.sock -H tcp:\/\/0.0.0.0:2375\"/g' /etc/default/docker
    else
        echo DOCKER_OPTS=\"-H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375\" >> /etc/default/docker
    fi
    service docker restart
    #docker start $(docker ps -aq)
elif [ -f /etc/system-release ]; then
        #tested on centos 7.2
    if grep -q "ExecStart=\/usr\/bin\/docker-current daemon" "/lib/systemd/system/docker.service"; then
            cp /lib/systemd/system/docker.service /lib/systemd/system/docker.service.bak
            sed -i 's/^ExecStart=.*$/ExecStart=\/usr\/bin\/docker daemon -H tcp:\/\/0.0.0.0:2375 -H unix:\/\/\/var\/run\/docker.sock  \\/g' /lib/systemd/system/docker.service
            systemctl daemon-reload
            systemctl restart docker
        else
            echo "to be implemented"
    fi
else
    echo "OS is not supported"
fi

# Issue Note for Ubuntu
# 1. If the configuration of the file /etc/default/docker does not take effect after restarting docker service,
#    you may try to modify /lib/systemd/system/docker.service
#    commands:
#    cp /lib/systemd/system/docker.service /lib/systemd/system/docker.service.bak
#    sed -i '/^ExecStart/i\EnvironmentFile=-/etc/default/docker' /lib/systemd/system/docker.service
#    sed -i '/ExecStart=\/usr\/bin\/dockerd/{;s/$/ \$DOCKER_OPTS/}' /lib/systemd/system/docker.service
#    systemctl daemon-reload
#    service docker restart
# 2. Systemd is a system and session manager for Linux, where systemctl is one tool for systemd to view and control systemd.
#    If the file /lib/systemd/system/docker.service is modified, systemd has to be reloaded to scan new or changed units.
#    1) systemd and related packages are available on the PPA. To use the PPA, first add it to your software sources list as follows.
#       add-apt-repository ppa:pitti/systemd
#       apt-get update
#    2) system can be installed from the PPS as follows.
#       apt-get install systemd libpam-systemd systemd-ui
image file and then committed to the * cache. * * Multiple I/O requests may be using an L2 table cache entry at any given * time. That means an entry may be in use across several requests and * reference counting is needed to free the entry at the correct time. In * particular, an entry evicted from the cache will only be freed once all * references are dropped. * * An in-flight I/O request will hold a reference to a L2 table cache entry for * the period during which it needs to access the L2 table. This includes * cluster offset lookup, L2 table allocation, and L2 table update when a new * data cluster has been allocated. * * An interesting case occurs when two requests need to access an L2 table that * is not in the cache. Since the operation to read the table from the image * file takes some time to complete, both requests may see a cache miss and * start reading the L2 table from the image file. The first to finish will * commit its L2 table into the cache. When the second tries to commit its * table will be deleted in favor of the existing cache entry. */ #include "qemu/osdep.h" #include "trace.h" #include "qed.h" /* Each L2 holds 2GB so this let's us fully cache a 100GB disk */ #define MAX_L2_CACHE_SIZE 50 /** * Initialize the L2 cache */ void qed_init_l2_cache(L2TableCache *l2_cache) { QTAILQ_INIT(&l2_cache->entries); l2_cache->n_entries = 0; } /** * Free the L2 cache */ void qed_free_l2_cache(L2TableCache *l2_cache) { CachedL2Table *entry, *next_entry; QTAILQ_FOREACH_SAFE(entry, &l2_cache->entries, node, next_entry) { qemu_vfree(entry->table); g_free(entry); } } /** * Allocate an uninitialized entry from the cache * * The returned entry has a reference count of 1 and is owned by the caller. * The caller must allocate the actual table field for this entry and it must * be freeable using qemu_vfree(). */ CachedL2Table *qed_alloc_l2_cache_entry(L2TableCache *l2_cache) { CachedL2Table *entry; entry = g_malloc0(sizeof(*entry)); entry->ref++; trace_qed_alloc_l2_cache_entry(l2_cache, entry); return entry; } /** * Decrease an entry's reference count and free if necessary when the reference * count drops to zero. */ void qed_unref_l2_cache_entry(CachedL2Table *entry) { if (!entry) { return; } entry->ref--; trace_qed_unref_l2_cache_entry(entry, entry->ref); if (entry->ref == 0) { qemu_vfree(entry->table); g_free(entry); } } /** * Find an entry in the L2 cache. This may return NULL and it's up to the * caller to satisfy the cache miss. * * For a cached entry, this function increases the reference count and returns * the entry. */ CachedL2Table *qed_find_l2_cache_entry(L2TableCache *l2_cache, uint64_t offset) { CachedL2Table *entry; QTAILQ_FOREACH(entry, &l2_cache->entries, node) { if (entry->offset == offset) { trace_qed_find_l2_cache_entry(l2_cache, entry, offset, entry->ref); entry->ref++; return entry; } } return NULL; } /** * Commit an L2 cache entry into the cache. This is meant to be used as part of * the process to satisfy a cache miss. A caller would allocate an entry which * is not actually in the L2 cache and then once the entry was valid and * present on disk, the entry can be committed into the cache. * * Since the cache is write-through, it's important that this function is not * called until the entry is present on disk and the L1 has been updated to * point to the entry. * * N.B. This function steals a reference to the l2_table from the caller so the * caller must obtain a new reference by issuing a call to * qed_find_l2_cache_entry(). */ void qed_commit_l2_cache_entry(L2TableCache *l2_cache, CachedL2Table *l2_table) { CachedL2Table *entry; entry = qed_find_l2_cache_entry(l2_cache, l2_table->offset); if (entry) { qed_unref_l2_cache_entry(entry); qed_unref_l2_cache_entry(l2_table); return; } /* Evict an unused cache entry so we have space. If all entries are in use * we can grow the cache temporarily and we try to shrink back down later. */ if (l2_cache->n_entries >= MAX_L2_CACHE_SIZE) { CachedL2Table *next; QTAILQ_FOREACH_SAFE(entry, &l2_cache->entries, node, next) { if (entry->ref > 1) { continue; } QTAILQ_REMOVE(&l2_cache->entries, entry, node); l2_cache->n_entries--; qed_unref_l2_cache_entry(entry); /* Stop evicting when we've shrunk back to max size */ if (l2_cache->n_entries < MAX_L2_CACHE_SIZE) { break; } } } l2_cache->n_entries++; QTAILQ_INSERT_TAIL(&l2_cache->entries, l2_table, node); }